diff options
Diffstat (limited to 'src/tools/clippy')
680 files changed, 9971 insertions, 3494 deletions
diff --git a/src/tools/clippy/.github/deploy.sh b/src/tools/clippy/.github/deploy.sh index d937661c0f8..5b4b4be4e36 100644 --- a/src/tools/clippy/.github/deploy.sh +++ b/src/tools/clippy/.github/deploy.sh @@ -25,16 +25,15 @@ if [[ $BETA = "true" ]]; then fi # Generate version index that is shown as root index page -cp util/gh-pages/versions.html out/index.html - -echo "Making the versions.json file" -python3 ./util/versions.py out +python3 ./util/versions.py ./util/gh-pages/versions.html out # Now let's go have some fun with the cloned repo cd out git config user.name "GHA CI" git config user.email "gha@ci.invalid" +git status + if [[ -n $TAG_NAME ]]; then # track files, so that the following check works git add --intent-to-add "$TAG_NAME" @@ -46,8 +45,6 @@ if [[ -n $TAG_NAME ]]; then git add "$TAG_NAME" # Update the symlink git add stable - # Update versions file - git add versions.json git commit -m "Add documentation for ${TAG_NAME} release: ${SHA}" elif [[ $BETA = "true" ]]; then if git diff --exit-code --quiet -- beta/; then diff --git a/src/tools/clippy/.github/workflows/clippy_bors.yml b/src/tools/clippy/.github/workflows/clippy_bors.yml index 2aa13313fa5..026771e6fcf 100644 --- a/src/tools/clippy/.github/workflows/clippy_bors.yml +++ b/src/tools/clippy/.github/workflows/clippy_bors.yml @@ -162,7 +162,7 @@ jobs: find $DIR ! -executable -o -type d ! -path $DIR | xargs rm -rf - name: Upload Binaries - uses: actions/upload-artifact@v3 + uses: actions/upload-artifact@v4 with: name: binaries path: target/debug @@ -202,7 +202,7 @@ jobs: # Download - name: Download target dir - uses: actions/download-artifact@v3 + uses: actions/download-artifact@v4 with: name: binaries path: target/debug diff --git a/src/tools/clippy/.github/workflows/remark.yml b/src/tools/clippy/.github/workflows/remark.yml index 348d52020fd..a1b011dc32d 100644 --- a/src/tools/clippy/.github/workflows/remark.yml +++ b/src/tools/clippy/.github/workflows/remark.yml @@ -19,7 +19,7 @@ jobs: uses: actions/checkout@v4 - name: Setup Node.js - uses: actions/setup-node@v3 + uses: actions/setup-node@v4 with: node-version: '18.x' diff --git a/src/tools/clippy/CHANGELOG.md b/src/tools/clippy/CHANGELOG.md index 9bc4ad9698d..5d253d52531 100644 --- a/src/tools/clippy/CHANGELOG.md +++ b/src/tools/clippy/CHANGELOG.md @@ -6,7 +6,61 @@ document. ## Unreleased / Beta / In Rust Nightly -[c9139bd5...master](https://github.com/rust-lang/rust-clippy/compare/c9139bd5...master) +[b794b8e0...master](https://github.com/rust-lang/rust-clippy/compare/b794b8e0...master) + +## Rust 1.81 + +Current stable, released 2024-09-05 + +### New Lints + +* Added [`cfg_not_test`] to `restriction` + [#11293](https://github.com/rust-lang/rust-clippy/pull/11293) +* Added [`byte_char_slices`] to `style` + [#10155](https://github.com/rust-lang/rust-clippy/pull/10155) +* Added [`set_contains_or_insert`] to `nursery` + [#12873](https://github.com/rust-lang/rust-clippy/pull/12873) +* Added [`manual_rotate`] to `style` + [#12983](https://github.com/rust-lang/rust-clippy/pull/12983) +* Added [`unnecessary_min_or_max`] to `complexity` + [#12368](https://github.com/rust-lang/rust-clippy/pull/12368) +* Added [`manual_inspect`] to `complexity` + [#12287](https://github.com/rust-lang/rust-clippy/pull/12287) +* Added [`field_scoped_visibility_modifiers`] to `restriction` + [#12893](https://github.com/rust-lang/rust-clippy/pull/12893) +* Added [`manual_pattern_char_comparison`] to `style` + [#12849](https://github.com/rust-lang/rust-clippy/pull/12849) +* Added [`needless_maybe_sized`] to `suspicious` + [#10632](https://github.com/rust-lang/rust-clippy/pull/10632) +* Added [`needless_character_iteration`] to `suspicious` + [#12815](https://github.com/rust-lang/rust-clippy/pull/12815) + +### Moves and Deprecations + +* [`allow_attributes`], [`allow_attributes_without_reason`]: Now work on stable + [rust#120924](https://github.com/rust-lang/rust/pull/120924) +* Renamed `overflow_check_conditional` to [`panicking_overflow_checks`] + [#12944](https://github.com/rust-lang/rust-clippy/pull/12944) +* Moved [`panicking_overflow_checks`] to `correctness` (From `complexity` now deny-by-default) + [#12944](https://github.com/rust-lang/rust-clippy/pull/12944) +* Renamed `thread_local_initializer_can_be_made_const` to [`missing_const_for_thread_local`] + [#12974](https://github.com/rust-lang/rust-clippy/pull/12974) +* Deprecated [`maybe_misused_cfg`] and [`mismatched_target_os`] as they are now caught by cargo + and rustc + [#12875](https://github.com/rust-lang/rust-clippy/pull/12875) + +### Enhancements + +* [`significant_drop_in_scrutinee`]: Now also checks scrutinies of `while let` and `for let` + expressions + [#12870](https://github.com/rust-lang/rust-clippy/pull/12870) +* [`std_instead_of_core`]: Now respects the `msrv` configuration + [#13168](https://github.com/rust-lang/rust-clippy/pull/13168) + +### ICE Fixes + +* [`suboptimal_flops`]: No longer crashes on custom `.log()` functions + [#12884](https://github.com/rust-lang/rust-clippy/pull/12884) ## Rust 1.80 @@ -5500,6 +5554,7 @@ Released 2018-09-13 [`invalid_regex`]: https://rust-lang.github.io/rust-clippy/master/index.html#invalid_regex [`invalid_upcast_comparisons`]: https://rust-lang.github.io/rust-clippy/master/index.html#invalid_upcast_comparisons [`invalid_utf8_in_unchecked`]: https://rust-lang.github.io/rust-clippy/master/index.html#invalid_utf8_in_unchecked +[`inverted_saturating_sub`]: https://rust-lang.github.io/rust-clippy/master/index.html#inverted_saturating_sub [`invisible_characters`]: https://rust-lang.github.io/rust-clippy/master/index.html#invisible_characters [`is_digit_ascii_radix`]: https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix [`items_after_statements`]: https://rust-lang.github.io/rust-clippy/master/index.html#items_after_statements @@ -5559,6 +5614,7 @@ Released 2018-09-13 [`manual_bits`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits [`manual_c_str_literals`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_c_str_literals [`manual_clamp`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_clamp +[`manual_div_ceil`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_div_ceil [`manual_filter`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter [`manual_filter_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter_map [`manual_find`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find @@ -5570,6 +5626,7 @@ Released 2018-09-13 [`manual_is_ascii_check`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_ascii_check [`manual_is_finite`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_finite [`manual_is_infinite`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_infinite +[`manual_is_power_of_two`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_power_of_two [`manual_is_variant_and`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_variant_and [`manual_let_else`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_let_else [`manual_main_separator_str`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_main_separator_str @@ -5716,6 +5773,7 @@ Released 2018-09-13 [`non_minimal_cfg`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_minimal_cfg [`non_octal_unix_permissions`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_octal_unix_permissions [`non_send_fields_in_send_ty`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_send_fields_in_send_ty +[`non_zero_suggestions`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_zero_suggestions [`nonminimal_bool`]: https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool [`nonsensical_open_options`]: https://rust-lang.github.io/rust-clippy/master/index.html#nonsensical_open_options [`nonstandard_macro_braces`]: https://rust-lang.github.io/rust-clippy/master/index.html#nonstandard_macro_braces @@ -5757,6 +5815,7 @@ Released 2018-09-13 [`pathbuf_init_then_push`]: https://rust-lang.github.io/rust-clippy/master/index.html#pathbuf_init_then_push [`pattern_type_mismatch`]: https://rust-lang.github.io/rust-clippy/master/index.html#pattern_type_mismatch [`permissions_set_readonly_false`]: https://rust-lang.github.io/rust-clippy/master/index.html#permissions_set_readonly_false +[`pointers_in_nomem_asm_block`]: https://rust-lang.github.io/rust-clippy/master/index.html#pointers_in_nomem_asm_block [`positional_named_format_parameters`]: https://rust-lang.github.io/rust-clippy/master/index.html#positional_named_format_parameters [`possible_missing_comma`]: https://rust-lang.github.io/rust-clippy/master/index.html#possible_missing_comma [`precedence`]: https://rust-lang.github.io/rust-clippy/master/index.html#precedence @@ -5812,6 +5871,7 @@ Released 2018-09-13 [`ref_as_ptr`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_as_ptr [`ref_binding_to_reference`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_binding_to_reference [`ref_in_deref`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_in_deref +[`ref_option`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_option [`ref_option_ref`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_option_ref [`ref_patterns`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_patterns [`regex_macro`]: https://rust-lang.github.io/rust-clippy/master/index.html#regex_macro @@ -5962,6 +6022,7 @@ Released 2018-09-13 [`unnecessary_fallible_conversions`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fallible_conversions [`unnecessary_filter_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_filter_map [`unnecessary_find_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_find_map +[`unnecessary_first_then_check`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_first_then_check [`unnecessary_fold`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold [`unnecessary_get_then_check`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check [`unnecessary_join`]: https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_join @@ -6003,6 +6064,7 @@ Released 2018-09-13 [`unused_result_ok`]: https://rust-lang.github.io/rust-clippy/master/index.html#unused_result_ok [`unused_rounding`]: https://rust-lang.github.io/rust-clippy/master/index.html#unused_rounding [`unused_self`]: https://rust-lang.github.io/rust-clippy/master/index.html#unused_self +[`unused_trait_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#unused_trait_names [`unused_unit`]: https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [`unusual_byte_groupings`]: https://rust-lang.github.io/rust-clippy/master/index.html#unusual_byte_groupings [`unwrap_in_result`]: https://rust-lang.github.io/rust-clippy/master/index.html#unwrap_in_result @@ -6013,6 +6075,7 @@ Released 2018-09-13 [`use_debug`]: https://rust-lang.github.io/rust-clippy/master/index.html#use_debug [`use_self`]: https://rust-lang.github.io/rust-clippy/master/index.html#use_self [`used_underscore_binding`]: https://rust-lang.github.io/rust-clippy/master/index.html#used_underscore_binding +[`used_underscore_items`]: https://rust-lang.github.io/rust-clippy/master/index.html#used_underscore_items [`useless_asref`]: https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref [`useless_attribute`]: https://rust-lang.github.io/rust-clippy/master/index.html#useless_attribute [`useless_conversion`]: https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion @@ -6047,6 +6110,7 @@ Released 2018-09-13 [`zero_repeat_side_effects`]: https://rust-lang.github.io/rust-clippy/master/index.html#zero_repeat_side_effects [`zero_sized_map_values`]: https://rust-lang.github.io/rust-clippy/master/index.html#zero_sized_map_values [`zero_width_space`]: https://rust-lang.github.io/rust-clippy/master/index.html#zero_width_space +[`zombie_processes`]: https://rust-lang.github.io/rust-clippy/master/index.html#zombie_processes [`zst_offset`]: https://rust-lang.github.io/rust-clippy/master/index.html#zst_offset <!-- end autogenerated links to lint list --> <!-- begin autogenerated links to configuration documentation --> diff --git a/src/tools/clippy/Cargo.toml b/src/tools/clippy/Cargo.toml index b48b881097f..cf810798d8c 100644 --- a/src/tools/clippy/Cargo.toml +++ b/src/tools/clippy/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "clippy" -version = "0.1.82" +version = "0.1.83" description = "A bunch of helpful lints to avoid common pitfalls in Rust" repository = "https://github.com/rust-lang/rust-clippy" readme = "README.md" @@ -31,7 +31,7 @@ anstream = "0.6.0" [dev-dependencies] cargo_metadata = "0.18.1" -ui_test = "0.25" +ui_test = "0.26.4" regex = "1.5.5" serde = { version = "1.0.145", features = ["derive"] } serde_json = "1.0.122" diff --git a/src/tools/clippy/book/src/lint_configuration.md b/src/tools/clippy/book/src/lint_configuration.md index 78348797588..07a56fb33df 100644 --- a/src/tools/clippy/book/src/lint_configuration.md +++ b/src/tools/clippy/book/src/lint_configuration.md @@ -353,6 +353,7 @@ Suppress lints whenever the suggested change would cause breakage for other crat * [`rc_buffer`](https://rust-lang.github.io/rust-clippy/master/index.html#rc_buffer) * [`rc_mutex`](https://rust-lang.github.io/rust-clippy/master/index.html#rc_mutex) * [`redundant_allocation`](https://rust-lang.github.io/rust-clippy/master/index.html#redundant_allocation) +* [`ref_option`](https://rust-lang.github.io/rust-clippy/master/index.html#ref_option) * [`single_call_fn`](https://rust-lang.github.io/rust-clippy/master/index.html#single_call_fn) * [`trivially_copy_pass_by_ref`](https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref) * [`unnecessary_box_returns`](https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_box_returns) @@ -727,6 +728,7 @@ The minimum rust version that the project supports. Defaults to the `rust-versio * [`uninlined_format_args`](https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args) * [`unnecessary_lazy_evaluations`](https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations) * [`unnested_or_patterns`](https://rust-lang.github.io/rust-clippy/master/index.html#unnested_or_patterns) +* [`unused_trait_names`](https://rust-lang.github.io/rust-clippy/master/index.html#unused_trait_names) * [`use_self`](https://rust-lang.github.io/rust-clippy/master/index.html#use_self) diff --git a/src/tools/clippy/clippy_config/Cargo.toml b/src/tools/clippy/clippy_config/Cargo.toml index 5c4e0761dbc..9da7112345d 100644 --- a/src/tools/clippy/clippy_config/Cargo.toml +++ b/src/tools/clippy/clippy_config/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "clippy_config" -version = "0.1.82" +version = "0.1.83" edition = "2021" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html diff --git a/src/tools/clippy/clippy_config/src/conf.rs b/src/tools/clippy/clippy_config/src/conf.rs index a6f1b958bfb..e4e2c97fdc1 100644 --- a/src/tools/clippy/clippy_config/src/conf.rs +++ b/src/tools/clippy/clippy_config/src/conf.rs @@ -1,6 +1,6 @@ +use crate::ClippyConfiguration; use crate::msrvs::Msrv; use crate::types::{DisallowedPath, MacroMatcher, MatchLintBehaviour, PubUnderscoreFieldsBehaviour, Rename}; -use crate::ClippyConfiguration; use rustc_errors::Applicability; use rustc_session::Session; use rustc_span::edit_distance::edit_distance; @@ -378,6 +378,7 @@ define_Conf! { rc_buffer, rc_mutex, redundant_allocation, + ref_option, single_call_fn, trivially_copy_pass_by_ref, unnecessary_box_returns, @@ -563,6 +564,7 @@ define_Conf! { uninlined_format_args, unnecessary_lazy_evaluations, unnested_or_patterns, + unused_trait_names, use_self, )] msrv: Msrv = Msrv::empty(), @@ -864,7 +866,7 @@ fn calculate_dimensions(fields: &[&str]) -> (usize, Vec<usize>) { cmp::max(1, terminal_width / (SEPARATOR_WIDTH + max_field_width)) }); - let rows = (fields.len() + (columns - 1)) / columns; + let rows = fields.len().div_ceil(columns); let column_widths = (0..columns) .map(|column| { diff --git a/src/tools/clippy/clippy_config/src/lib.rs b/src/tools/clippy/clippy_config/src/lib.rs index ac838cc81d2..c63d98a0a13 100644 --- a/src/tools/clippy/clippy_config/src/lib.rs +++ b/src/tools/clippy/clippy_config/src/lib.rs @@ -26,5 +26,5 @@ mod metadata; pub mod msrvs; pub mod types; -pub use conf::{get_configuration_metadata, lookup_conf_file, Conf}; +pub use conf::{Conf, get_configuration_metadata, lookup_conf_file}; pub use metadata::ClippyConfiguration; diff --git a/src/tools/clippy/clippy_config/src/msrvs.rs b/src/tools/clippy/clippy_config/src/msrvs.rs index a2b4b6e256f..68a3b11d384 100644 --- a/src/tools/clippy/clippy_config/src/msrvs.rs +++ b/src/tools/clippy/clippy_config/src/msrvs.rs @@ -1,7 +1,7 @@ use rustc_ast::Attribute; use rustc_attr::parse_version; use rustc_session::{RustcVersion, Session}; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; use serde::Deserialize; use std::fmt; @@ -19,10 +19,12 @@ macro_rules! msrv_aliases { msrv_aliases! { 1,83,0 { CONST_EXTERN_FN } 1,83,0 { CONST_FLOAT_BITS_CONV } + 1,82,0 { IS_NONE_OR } 1,81,0 { LINT_REASONS_STABILIZATION } 1,80,0 { BOX_INTO_ITER} 1,77,0 { C_STR_LITERALS } 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } + 1,73,0 { MANUAL_DIV_CEIL } 1,71,0 { TUPLE_ARRAY_CONVERSIONS, BUILD_HASHER_HASH_ONE } 1,70,0 { OPTION_RESULT_IS_VARIANT_AND, BINARY_HEAP_RETAIN } 1,68,0 { PATH_MAIN_SEPARATOR_STR } @@ -38,7 +40,7 @@ msrv_aliases! { 1,52,0 { STR_SPLIT_ONCE, REM_EUCLID_CONST } 1,51,0 { BORROW_AS_PTR, SEEK_FROM_CURRENT, UNSIGNED_ABS } 1,50,0 { BOOL_THEN, CLAMP } - 1,47,0 { TAU, IS_ASCII_DIGIT_CONST, ARRAY_IMPL_ANY_LEN } + 1,47,0 { TAU, IS_ASCII_DIGIT_CONST, ARRAY_IMPL_ANY_LEN, SATURATING_SUB_CONST } 1,46,0 { CONST_IF_MATCH } 1,45,0 { STR_STRIP_PREFIX } 1,43,0 { LOG2_10, LOG10_2, NUMERIC_ASSOCIATED_CONSTANTS } @@ -50,6 +52,7 @@ msrv_aliases! { 1,36,0 { ITERATOR_COPIED } 1,35,0 { OPTION_COPIED, RANGE_CONTAINS } 1,34,0 { TRY_FROM } + 1,33,0 { UNDERSCORE_IMPORTS } 1,30,0 { ITERATOR_FIND_MAP, TOOL_ATTRIBUTES } 1,29,0 { ITER_FLATTEN } 1,28,0 { FROM_BOOL } diff --git a/src/tools/clippy/clippy_config/src/types.rs b/src/tools/clippy/clippy_config/src/types.rs index d47e34bb5bc..bab63911182 100644 --- a/src/tools/clippy/clippy_config/src/types.rs +++ b/src/tools/clippy/clippy_config/src/types.rs @@ -1,5 +1,5 @@ use serde::de::{self, Deserializer, Visitor}; -use serde::{ser, Deserialize, Serialize}; +use serde::{Deserialize, Serialize, ser}; use std::fmt; #[derive(Debug, Deserialize)] diff --git a/src/tools/clippy/clippy_dev/src/fmt.rs b/src/tools/clippy/clippy_dev/src/fmt.rs index 5fc4365c6e7..8c61c35533c 100644 --- a/src/tools/clippy/clippy_dev/src/fmt.rs +++ b/src/tools/clippy/clippy_dev/src/fmt.rs @@ -1,6 +1,6 @@ use crate::clippy_project_root; use itertools::Itertools; -use rustc_lexer::{tokenize, TokenKind}; +use rustc_lexer::{TokenKind, tokenize}; use shell_escape::escape; use std::ffi::{OsStr, OsString}; use std::ops::ControlFlow; diff --git a/src/tools/clippy/clippy_dev/src/new_lint.rs b/src/tools/clippy/clippy_dev/src/new_lint.rs index 87117832fb9..5fd65017cfb 100644 --- a/src/tools/clippy/clippy_dev/src/new_lint.rs +++ b/src/tools/clippy/clippy_dev/src/new_lint.rs @@ -441,7 +441,7 @@ fn create_lint_for_ty(lint: &LintData<'_>, enable_msrv: bool, ty: &str) -> io::R #[allow(clippy::too_many_lines)] fn setup_mod_file(path: &Path, lint: &LintData<'_>) -> io::Result<&'static str> { - use super::update_lints::{match_tokens, LintDeclSearchResult}; + use super::update_lints::{LintDeclSearchResult, match_tokens}; use rustc_lexer::TokenKind; let lint_name_upper = lint.name.to_uppercase(); diff --git a/src/tools/clippy/clippy_dev/src/serve.rs b/src/tools/clippy/clippy_dev/src/serve.rs index 19560b31fd3..cc14cd8dae6 100644 --- a/src/tools/clippy/clippy_dev/src/serve.rs +++ b/src/tools/clippy/clippy_dev/src/serve.rs @@ -29,7 +29,7 @@ pub fn run(port: u16, lint: Option<String>) -> ! { } if let Some(url) = url.take() { thread::spawn(move || { - Command::new(PYTHON) + let mut child = Command::new(PYTHON) .arg("-m") .arg("http.server") .arg(port.to_string()) @@ -40,6 +40,7 @@ pub fn run(port: u16, lint: Option<String>) -> ! { thread::sleep(Duration::from_millis(500)); // Launch browser after first export.py has completed and http.server is up let _result = opener::open(url); + child.wait().unwrap(); }); } thread::sleep(Duration::from_millis(1000)); diff --git a/src/tools/clippy/clippy_dev/src/update_lints.rs b/src/tools/clippy/clippy_dev/src/update_lints.rs index 8dbda1c634c..d6ed36d52f4 100644 --- a/src/tools/clippy/clippy_dev/src/update_lints.rs +++ b/src/tools/clippy/clippy_dev/src/update_lints.rs @@ -1,7 +1,7 @@ use crate::clippy_project_root; use aho_corasick::AhoCorasickBuilder; use itertools::Itertools; -use rustc_lexer::{tokenize, unescape, LiteralKind, TokenKind}; +use rustc_lexer::{LiteralKind, TokenKind, tokenize, unescape}; use std::collections::{HashMap, HashSet}; use std::ffi::OsStr; use std::fmt::{self, Write}; @@ -1048,23 +1048,17 @@ mod tests { Lint::new("incorrect_match", "group1", "\"abc\"", "module_name", Range::default()), ]; let mut expected: HashMap<String, Vec<Lint>> = HashMap::new(); - expected.insert( - "group1".to_string(), - vec![ - Lint::new("should_assert_eq", "group1", "\"abc\"", "module_name", Range::default()), - Lint::new("incorrect_match", "group1", "\"abc\"", "module_name", Range::default()), - ], - ); - expected.insert( - "group2".to_string(), - vec![Lint::new( - "should_assert_eq2", - "group2", - "\"abc\"", - "module_name", - Range::default(), - )], - ); + expected.insert("group1".to_string(), vec![ + Lint::new("should_assert_eq", "group1", "\"abc\"", "module_name", Range::default()), + Lint::new("incorrect_match", "group1", "\"abc\"", "module_name", Range::default()), + ]); + expected.insert("group2".to_string(), vec![Lint::new( + "should_assert_eq2", + "group2", + "\"abc\"", + "module_name", + Range::default(), + )]); assert_eq!(expected, Lint::by_lint_group(lints.into_iter())); } } diff --git a/src/tools/clippy/clippy_lints/Cargo.toml b/src/tools/clippy/clippy_lints/Cargo.toml index fbd4566da58..d1188940b46 100644 --- a/src/tools/clippy/clippy_lints/Cargo.toml +++ b/src/tools/clippy/clippy_lints/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "clippy_lints" -version = "0.1.82" +version = "0.1.83" description = "A bunch of helpful lints to avoid common pitfalls in Rust" repository = "https://github.com/rust-lang/rust-clippy" readme = "README.md" diff --git a/src/tools/clippy/clippy_lints/src/absolute_paths.rs b/src/tools/clippy/clippy_lints/src/absolute_paths.rs index c72b3f1318c..1af6d448a93 100644 --- a/src/tools/clippy/clippy_lints/src/absolute_paths.rs +++ b/src/tools/clippy/clippy_lints/src/absolute_paths.rs @@ -3,12 +3,12 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::is_from_proc_macro; use rustc_data_structures::fx::FxHashSet; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::{DefId, CRATE_DEF_INDEX}; +use rustc_hir::def_id::{CRATE_DEF_INDEX, DefId}; use rustc_hir::{HirId, ItemKind, Node, Path}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::kw; use rustc_span::Symbol; +use rustc_span::symbol::kw; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/almost_complete_range.rs b/src/tools/clippy/clippy_lints/src/almost_complete_range.rs index 451bae95987..370f0c482fd 100644 --- a/src/tools/clippy/clippy_lints/src/almost_complete_range.rs +++ b/src/tools/clippy/clippy_lints/src/almost_complete_range.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{trim_span, walk_span_to_context}; use rustc_ast::ast::{Expr, ExprKind, LitKind, Pat, PatKind, RangeEnd, RangeLimits}; diff --git a/src/tools/clippy/clippy_lints/src/approx_const.rs b/src/tools/clippy/clippy_lints/src/approx_const.rs index 56f5e903dc3..4f8f091a095 100644 --- a/src/tools/clippy/clippy_lints/src/approx_const.rs +++ b/src/tools/clippy/clippy_lints/src/approx_const.rs @@ -1,10 +1,10 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_help; use rustc_ast::ast::{FloatTy, LitFloatType, LitKind}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::{impl_lint_pass, RustcVersion}; +use rustc_session::{RustcVersion, impl_lint_pass}; use rustc_span::symbol; use std::f64::consts as f64; diff --git a/src/tools/clippy/clippy_lints/src/arc_with_non_send_sync.rs b/src/tools/clippy/clippy_lints/src/arc_with_non_send_sync.rs index 4eafa330faf..2643f850879 100644 --- a/src/tools/clippy/clippy_lints/src/arc_with_non_send_sync.rs +++ b/src/tools/clippy/clippy_lints/src/arc_with_non_send_sync.rs @@ -4,8 +4,8 @@ use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; -use rustc_middle::ty::print::with_forced_trimmed_paths; use rustc_middle::ty::GenericArgKind; +use rustc_middle::ty::print::with_forced_trimmed_paths; use rustc_session::declare_lint_pass; use rustc_span::symbol::sym; diff --git a/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs b/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs index 7eaac80f969..b6684825835 100644 --- a/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs +++ b/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs @@ -1,7 +1,7 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::is_inside_always_const_context; -use clippy_utils::macros::{find_assert_args, root_macro_call_first_node, PanicExpn}; +use clippy_utils::macros::{PanicExpn, find_assert_args, root_macro_call_first_node}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/assertions_on_result_states.rs b/src/tools/clippy/clippy_lints/src/assertions_on_result_states.rs index f1cb4a05af8..c073dee855e 100644 --- a/src/tools/clippy/clippy_lints/src/assertions_on_result_states.rs +++ b/src/tools/clippy/clippy_lints/src/assertions_on_result_states.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::macros::{find_assert_args, root_macro_call_first_node, PanicExpn}; +use clippy_utils::macros::{PanicExpn, find_assert_args, root_macro_call_first_node}; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::{has_debug_impl, is_copy, is_type_diagnostic_item}; use clippy_utils::usage::local_used_after_expr; diff --git a/src/tools/clippy/clippy_lints/src/assigning_clones.rs b/src/tools/clippy/clippy_lints/src/assigning_clones.rs index 55645d04eef..0b82c0cd04c 100644 --- a/src/tools/clippy/clippy_lints/src/assigning_clones.rs +++ b/src/tools/clippy/clippy_lints/src/assigning_clones.rs @@ -1,7 +1,7 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::mir::{enclosing_mir, PossibleBorrowerMap}; +use clippy_utils::mir::{PossibleBorrowerMap, enclosing_mir}; use clippy_utils::sugg::Sugg; use clippy_utils::{is_diag_trait_item, is_in_test, last_path_segment, local_is_initialized, path_to_local}; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/attrs/allow_attributes_without_reason.rs b/src/tools/clippy/clippy_lints/src/attrs/allow_attributes_without_reason.rs index 4ab97118df1..5d4e864b9b0 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/allow_attributes_without_reason.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/allow_attributes_without_reason.rs @@ -1,15 +1,15 @@ -use super::{Attribute, ALLOW_ATTRIBUTES_WITHOUT_REASON}; +use super::{ALLOW_ATTRIBUTES_WITHOUT_REASON, Attribute}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_from_proc_macro; -use rustc_ast::{MetaItemKind, NestedMetaItem}; +use rustc_ast::{MetaItemInner, MetaItemKind}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_span::sym; use rustc_span::symbol::Symbol; -pub(super) fn check<'cx>(cx: &LateContext<'cx>, name: Symbol, items: &[NestedMetaItem], attr: &'cx Attribute) { +pub(super) fn check<'cx>(cx: &LateContext<'cx>, name: Symbol, items: &[MetaItemInner], attr: &'cx Attribute) { // Check if the reason is present - if let Some(item) = items.last().and_then(NestedMetaItem::meta_item) + if let Some(item) = items.last().and_then(MetaItemInner::meta_item) && let MetaItemKind::NameValue(_) = &item.kind && item.path == sym::reason { @@ -26,7 +26,7 @@ pub(super) fn check<'cx>(cx: &LateContext<'cx>, name: Symbol, items: &[NestedMet cx, ALLOW_ATTRIBUTES_WITHOUT_REASON, attr.span, - format!("`{}` attribute without specifying a reason", name.as_str()), + format!("`{name}` attribute without specifying a reason"), |diag| { diag.help("try adding a reason at the end with `, reason = \"..\"`"); }, diff --git a/src/tools/clippy/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs b/src/tools/clippy/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs index 9b08fd6d654..0baf889faa0 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs @@ -1,12 +1,12 @@ -use super::utils::extract_clippy_lint; use super::BLANKET_CLIPPY_RESTRICTION_LINTS; +use super::utils::extract_clippy_lint; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_then}; -use rustc_ast::NestedMetaItem; +use rustc_ast::MetaItemInner; use rustc_lint::{LateContext, Level, LintContext}; use rustc_span::symbol::Symbol; -use rustc_span::{sym, DUMMY_SP}; +use rustc_span::{DUMMY_SP, sym}; -pub(super) fn check(cx: &LateContext<'_>, name: Symbol, items: &[NestedMetaItem]) { +pub(super) fn check(cx: &LateContext<'_>, name: Symbol, items: &[MetaItemInner]) { for lint in items { if let Some(lint_name) = extract_clippy_lint(lint) { if lint_name.as_str() == "restriction" && name != sym::allow { diff --git a/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs b/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs index e872ab6b4b5..abf924f7542 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs @@ -1,4 +1,4 @@ -use super::{unnecessary_clippy_cfg, Attribute, DEPRECATED_CFG_ATTR, DEPRECATED_CLIPPY_CFG_ATTR}; +use super::{Attribute, DEPRECATED_CFG_ATTR, DEPRECATED_CLIPPY_CFG_ATTR, unnecessary_clippy_cfg}; use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use rustc_ast::AttrStyle; diff --git a/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs b/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs index 40a1c4e2884..55f8e1072db 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use rustc_ast::{Attribute, MetaItem}; use rustc_data_structures::fx::FxHashMap; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::collections::hash_map::Entry; fn emit_if_duplicated( @@ -36,7 +36,7 @@ fn check_duplicated_attr( } let Some(ident) = attr.ident() else { return }; let name = ident.name; - if name == sym::doc || name == sym::cfg_attr || name == sym::rustc_on_unimplemented { + if name == sym::doc || name == sym::cfg_attr || name == sym::rustc_on_unimplemented || name == sym::reason { // FIXME: Would be nice to handle `cfg_attr` as well. Only problem is to check that cfg // conditions are the same. // `#[rustc_on_unimplemented]` contains duplicated subattributes, that's expected. diff --git a/src/tools/clippy/clippy_lints/src/attrs/empty_line_after.rs b/src/tools/clippy/clippy_lints/src/attrs/empty_line_after.rs deleted file mode 100644 index 7ff644b4c44..00000000000 --- a/src/tools/clippy/clippy_lints/src/attrs/empty_line_after.rs +++ /dev/null @@ -1,52 +0,0 @@ -use super::{EMPTY_LINE_AFTER_DOC_COMMENTS, EMPTY_LINE_AFTER_OUTER_ATTR}; -use clippy_utils::diagnostics::span_lint; -use clippy_utils::source::{is_present_in_source, without_block_comments, SpanRangeExt}; -use rustc_ast::{AttrKind, AttrStyle}; -use rustc_lint::EarlyContext; -use rustc_span::Span; - -/// Check for empty lines after outer attributes. -/// -/// Attributes and documentation comments are both considered outer attributes -/// by the AST. However, the average user likely considers them to be different. -/// Checking for empty lines after each of these attributes is split into two different -/// lints but can share the same logic. -pub(super) fn check(cx: &EarlyContext<'_>, item: &rustc_ast::Item) { - let mut iter = item.attrs.iter().peekable(); - while let Some(attr) = iter.next() { - if (matches!(attr.kind, AttrKind::Normal(..)) || matches!(attr.kind, AttrKind::DocComment(..))) - && attr.style == AttrStyle::Outer - && is_present_in_source(cx, attr.span) - { - let begin_of_attr_to_item = Span::new(attr.span.lo(), item.span.lo(), item.span.ctxt(), item.span.parent()); - let end_of_attr_to_next_attr_or_item = Span::new( - attr.span.hi(), - iter.peek().map_or(item.span.lo(), |next_attr| next_attr.span.lo()), - item.span.ctxt(), - item.span.parent(), - ); - - if let Some(snippet) = end_of_attr_to_next_attr_or_item.get_source_text(cx) { - let lines = snippet.split('\n').collect::<Vec<_>>(); - let lines = without_block_comments(lines); - - if lines.iter().filter(|l| l.trim().is_empty()).count() > 2 { - let (lint_msg, lint_type) = match attr.kind { - AttrKind::DocComment(..) => ( - "found an empty line after a doc comment. \ - Perhaps you need to use `//!` to make a comment on a module, remove the empty line, or make a regular comment with `//`?", - EMPTY_LINE_AFTER_DOC_COMMENTS, - ), - AttrKind::Normal(..) => ( - "found an empty line after an outer attribute. \ - Perhaps you forgot to add a `!` to make it an inner attribute?", - EMPTY_LINE_AFTER_OUTER_ATTR, - ), - }; - - span_lint(cx, lint_type, begin_of_attr_to_item, lint_msg); - } - } - } - } -} diff --git a/src/tools/clippy/clippy_lints/src/attrs/inline_always.rs b/src/tools/clippy/clippy_lints/src/attrs/inline_always.rs index 3b5b80ffefa..d41bb580c6c 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/inline_always.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/inline_always.rs @@ -1,10 +1,10 @@ -use super::utils::is_word; use super::INLINE_ALWAYS; +use super::utils::is_word; use clippy_utils::diagnostics::span_lint; use rustc_ast::Attribute; use rustc_lint::LateContext; use rustc_span::symbol::Symbol; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; pub(super) fn check(cx: &LateContext<'_>, span: Span, name: Symbol, attrs: &[Attribute]) { if span.from_expansion() { diff --git a/src/tools/clippy/clippy_lints/src/attrs/mod.rs b/src/tools/clippy/clippy_lints/src/attrs/mod.rs index 3b14e9aee7f..1a34ca99fc2 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/mod.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/mod.rs @@ -4,7 +4,6 @@ mod blanket_clippy_restriction_lints; mod deprecated_cfg_attr; mod deprecated_semver; mod duplicated_attributes; -mod empty_line_after; mod inline_always; mod mixed_attributes_style; mod non_minimal_cfg; @@ -13,9 +12,9 @@ mod unnecessary_clippy_cfg; mod useless_attribute; mod utils; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; -use rustc_ast::{Attribute, MetaItemKind, NestedMetaItem}; +use clippy_config::msrvs::{self, Msrv}; +use rustc_ast::{Attribute, MetaItemInner, MetaItemKind}; use rustc_hir::{ImplItem, Item, ItemKind, TraitItem}; use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass}; use rustc_session::impl_lint_pass; @@ -128,94 +127,6 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for empty lines after outer attributes - /// - /// ### Why is this bad? - /// Most likely the attribute was meant to be an inner attribute using a '!'. - /// If it was meant to be an outer attribute, then the following item - /// should not be separated by empty lines. - /// - /// ### Known problems - /// Can cause false positives. - /// - /// From the clippy side it's difficult to detect empty lines between an attributes and the - /// following item because empty lines and comments are not part of the AST. The parsing - /// currently works for basic cases but is not perfect. - /// - /// ### Example - /// ```no_run - /// #[allow(dead_code)] - /// - /// fn not_quite_good_code() { } - /// ``` - /// - /// Use instead: - /// ```no_run - /// // Good (as inner attribute) - /// #![allow(dead_code)] - /// - /// fn this_is_fine() { } - /// - /// // or - /// - /// // Good (as outer attribute) - /// #[allow(dead_code)] - /// fn this_is_fine_too() { } - /// ``` - #[clippy::version = "pre 1.29.0"] - pub EMPTY_LINE_AFTER_OUTER_ATTR, - nursery, - "empty line after outer attribute" -} - -declare_clippy_lint! { - /// ### What it does - /// Checks for empty lines after documentation comments. - /// - /// ### Why is this bad? - /// The documentation comment was most likely meant to be an inner attribute or regular comment. - /// If it was intended to be a documentation comment, then the empty line should be removed to - /// be more idiomatic. - /// - /// ### Known problems - /// Only detects empty lines immediately following the documentation. If the doc comment is followed - /// by an attribute and then an empty line, this lint will not trigger. Use `empty_line_after_outer_attr` - /// in combination with this lint to detect both cases. - /// - /// Does not detect empty lines after doc attributes (e.g. `#[doc = ""]`). - /// - /// ### Example - /// ```no_run - /// /// Some doc comment with a blank line after it. - /// - /// fn not_quite_good_code() { } - /// ``` - /// - /// Use instead: - /// ```no_run - /// /// Good (no blank line) - /// fn this_is_fine() { } - /// ``` - /// - /// ```no_run - /// // Good (convert to a regular comment) - /// - /// fn this_is_fine_too() { } - /// ``` - /// - /// ```no_run - /// //! Good (convert to a comment on an inner attribute) - /// - /// fn this_is_fine_as_well() { } - /// ``` - #[clippy::version = "1.70.0"] - pub EMPTY_LINE_AFTER_DOC_COMMENTS, - nursery, - "empty line after documentation comments" -} - -declare_clippy_lint! { - /// ### What it does /// Checks for `warn`/`deny`/`forbid` attributes targeting the whole clippy::restriction category. /// /// ### Why is this bad? @@ -545,7 +456,7 @@ impl<'tcx> LateLintPass<'tcx> for Attributes { return; } for item in items { - if let NestedMetaItem::MetaItem(mi) = &item + if let MetaItemInner::MetaItem(mi) = &item && let MetaItemKind::NameValue(lit) = &mi.kind && mi.has_name(sym::since) { @@ -601,18 +512,12 @@ impl EarlyAttributes { impl_lint_pass!(EarlyAttributes => [ DEPRECATED_CFG_ATTR, - EMPTY_LINE_AFTER_OUTER_ATTR, - EMPTY_LINE_AFTER_DOC_COMMENTS, NON_MINIMAL_CFG, DEPRECATED_CLIPPY_CFG_ATTR, UNNECESSARY_CLIPPY_CFG, ]); impl EarlyLintPass for EarlyAttributes { - fn check_item(&mut self, cx: &EarlyContext<'_>, item: &rustc_ast::Item) { - empty_line_after::check(cx, item); - } - fn check_attribute(&mut self, cx: &EarlyContext<'_>, attr: &Attribute) { deprecated_cfg_attr::check(cx, attr, &self.msrv); deprecated_cfg_attr::check_clippy(cx, attr); diff --git a/src/tools/clippy/clippy_lints/src/attrs/non_minimal_cfg.rs b/src/tools/clippy/clippy_lints/src/attrs/non_minimal_cfg.rs index 877025cce4c..7eff5eccfa1 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/non_minimal_cfg.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/non_minimal_cfg.rs @@ -1,7 +1,7 @@ use super::{Attribute, NON_MINIMAL_CFG}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::SpanRangeExt; -use rustc_ast::{MetaItemKind, NestedMetaItem}; +use rustc_ast::{MetaItemInner, MetaItemKind}; use rustc_errors::Applicability; use rustc_lint::EarlyContext; use rustc_span::sym; @@ -14,9 +14,9 @@ pub(super) fn check(cx: &EarlyContext<'_>, attr: &Attribute) { } } -fn check_nested_cfg(cx: &EarlyContext<'_>, items: &[NestedMetaItem]) { +fn check_nested_cfg(cx: &EarlyContext<'_>, items: &[MetaItemInner]) { for item in items { - if let NestedMetaItem::MetaItem(meta) = item { + if let MetaItemInner::MetaItem(meta) = item { if !meta.has_name(sym::any) && !meta.has_name(sym::all) { continue; } diff --git a/src/tools/clippy/clippy_lints/src/attrs/useless_attribute.rs b/src/tools/clippy/clippy_lints/src/attrs/useless_attribute.rs index 67ba605a59f..72e6ce59d59 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/useless_attribute.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/useless_attribute.rs @@ -1,8 +1,8 @@ use super::utils::{extract_clippy_lint, is_lint_level, is_word}; use super::{Attribute, USELESS_ATTRIBUTE}; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::{first_line_of_span, SpanRangeExt}; -use rustc_ast::NestedMetaItem; +use clippy_utils::source::{SpanRangeExt, first_line_of_span}; +use rustc_ast::MetaItemInner; use rustc_errors::Applicability; use rustc_hir::{Item, ItemKind}; use rustc_lint::{LateContext, LintContext}; @@ -21,7 +21,7 @@ pub(super) fn check(cx: &LateContext<'_>, item: &Item<'_>, attrs: &[Attribute]) for lint in lint_list { match item.kind { ItemKind::Use(..) => { - if let NestedMetaItem::MetaItem(meta_item) = lint + if let MetaItemInner::MetaItem(meta_item) = lint && meta_item.is_word() && let Some(ident) = meta_item.ident() && matches!( @@ -51,6 +51,7 @@ pub(super) fn check(cx: &LateContext<'_>, item: &Item<'_>, attrs: &[Attribute]) | "module_name_repetitions" | "single_component_path_imports" | "disallowed_types" + | "unused_trait_names" ) }) { return; diff --git a/src/tools/clippy/clippy_lints/src/attrs/utils.rs b/src/tools/clippy/clippy_lints/src/attrs/utils.rs index 91ae19acbf7..9b10ae83651 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/utils.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/utils.rs @@ -1,5 +1,5 @@ use clippy_utils::macros::{is_panic, macro_backtrace}; -use rustc_ast::{AttrId, NestedMetaItem}; +use rustc_ast::{AttrId, MetaItemInner}; use rustc_hir::{ Block, Expr, ExprKind, ImplItem, ImplItemKind, Item, ItemKind, StmtKind, TraitFn, TraitItem, TraitItemKind, }; @@ -8,8 +8,8 @@ use rustc_middle::ty; use rustc_span::sym; use rustc_span::symbol::Symbol; -pub(super) fn is_word(nmi: &NestedMetaItem, expected: Symbol) -> bool { - if let NestedMetaItem::MetaItem(mi) = &nmi { +pub(super) fn is_word(nmi: &MetaItemInner, expected: Symbol) -> bool { + if let MetaItemInner::MetaItem(mi) = &nmi { mi.is_word() && mi.has_name(expected) } else { false @@ -74,7 +74,7 @@ fn is_relevant_expr(cx: &LateContext<'_>, typeck_results: &ty::TypeckResults<'_> } /// Returns the lint name if it is clippy lint. -pub(super) fn extract_clippy_lint(lint: &NestedMetaItem) -> Option<Symbol> { +pub(super) fn extract_clippy_lint(lint: &MetaItemInner) -> Option<Symbol> { if let Some(meta_item) = lint.meta_item() && meta_item.path.segments.len() > 1 && let tool_name = meta_item.path.segments[0].ident diff --git a/src/tools/clippy/clippy_lints/src/await_holding_invalid.rs b/src/tools/clippy/clippy_lints/src/await_holding_invalid.rs index d5f017b2650..9952d0af99e 100644 --- a/src/tools/clippy/clippy_lints/src/await_holding_invalid.rs +++ b/src/tools/clippy/clippy_lints/src/await_holding_invalid.rs @@ -7,7 +7,7 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::mir::CoroutineLayout; use rustc_middle::ty::TyCtxt; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/booleans.rs b/src/tools/clippy/clippy_lints/src/booleans.rs index e933fdf1d6e..26888f7e3a0 100644 --- a/src/tools/clippy/clippy_lints/src/booleans.rs +++ b/src/tools/clippy/clippy_lints/src/booleans.rs @@ -1,15 +1,17 @@ +use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_hir_and_then}; use clippy_utils::eq_expr_value; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_expr, FnKind, Visitor}; +use rustc_hir::intravisit::{FnKind, Visitor, walk_expr}; use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, UnOp}; use rustc_lint::{LateContext, LateLintPass, Level}; -use rustc_session::declare_lint_pass; +use rustc_session::{RustcVersion, impl_lint_pass}; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -69,9 +71,25 @@ declare_clippy_lint! { } // For each pairs, both orders are considered. -const METHODS_WITH_NEGATION: [(&str, &str); 2] = [("is_some", "is_none"), ("is_err", "is_ok")]; +const METHODS_WITH_NEGATION: [(Option<RustcVersion>, &str, &str); 3] = [ + (None, "is_some", "is_none"), + (None, "is_err", "is_ok"), + (Some(msrvs::IS_NONE_OR), "is_some_and", "is_none_or"), +]; + +pub struct NonminimalBool { + msrv: Msrv, +} + +impl NonminimalBool { + pub fn new(conf: &'static Conf) -> Self { + Self { + msrv: conf.msrv.clone(), + } + } +} -declare_lint_pass!(NonminimalBool => [NONMINIMAL_BOOL, OVERLY_COMPLEX_BOOL_EXPR]); +impl_lint_pass!(NonminimalBool => [NONMINIMAL_BOOL, OVERLY_COMPLEX_BOOL_EXPR]); impl<'tcx> LateLintPass<'tcx> for NonminimalBool { fn check_fn( @@ -83,7 +101,7 @@ impl<'tcx> LateLintPass<'tcx> for NonminimalBool { _: Span, _: LocalDefId, ) { - NonminimalBoolVisitor { cx }.visit_body(body); + NonminimalBoolVisitor { cx, msrv: &self.msrv }.visit_body(body); } fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { @@ -100,6 +118,8 @@ impl<'tcx> LateLintPass<'tcx> for NonminimalBool { _ => {}, } } + + extract_msrv_attr!(LateContext); } fn inverted_bin_op_eq_str(op: BinOpKind) -> Option<&'static str> { @@ -176,11 +196,11 @@ fn check_inverted_bool_in_condition( ); } -fn check_simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) { +fn check_simplify_not(cx: &LateContext<'_>, msrv: &Msrv, expr: &Expr<'_>) { if let ExprKind::Unary(UnOp::Not, inner) = &expr.kind && !expr.span.from_expansion() && !inner.span.from_expansion() - && let Some(suggestion) = simplify_not(cx, inner) + && let Some(suggestion) = simplify_not(cx, msrv, inner) && cx.tcx.lint_level_at_node(NONMINIMAL_BOOL, expr.hir_id).0 != Level::Allow { span_lint_and_sugg( @@ -197,6 +217,7 @@ fn check_simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) { struct NonminimalBoolVisitor<'a, 'tcx> { cx: &'a LateContext<'tcx>, + msrv: &'a Msrv, } use quine_mc_cluskey::Bool; @@ -205,7 +226,7 @@ struct Hir2Qmm<'a, 'tcx, 'v> { cx: &'a LateContext<'tcx>, } -impl<'a, 'tcx, 'v> Hir2Qmm<'a, 'tcx, 'v> { +impl<'v> Hir2Qmm<'_, '_, 'v> { fn extract(&mut self, op: BinOpKind, a: &[&'v Expr<'_>], mut v: Vec<Bool>) -> Result<Vec<Bool>, String> { for a in a { if let ExprKind::Binary(binop, lhs, rhs) = &a.kind { @@ -289,10 +310,11 @@ impl<'a, 'tcx, 'v> Hir2Qmm<'a, 'tcx, 'v> { struct SuggestContext<'a, 'tcx, 'v> { terminals: &'v [&'v Expr<'v>], cx: &'a LateContext<'tcx>, + msrv: &'a Msrv, output: String, } -impl<'a, 'tcx, 'v> SuggestContext<'a, 'tcx, 'v> { +impl SuggestContext<'_, '_, '_> { fn recurse(&mut self, suggestion: &Bool) -> Option<()> { use quine_mc_cluskey::Bool::{And, False, Not, Or, Term, True}; match suggestion { @@ -311,7 +333,7 @@ impl<'a, 'tcx, 'v> SuggestContext<'a, 'tcx, 'v> { }, Term(n) => { let terminal = self.terminals[n as usize]; - if let Some(str) = simplify_not(self.cx, terminal) { + if let Some(str) = simplify_not(self.cx, self.msrv, terminal) { self.output.push_str(&str); } else { self.output.push('!'); @@ -358,7 +380,7 @@ impl<'a, 'tcx, 'v> SuggestContext<'a, 'tcx, 'v> { } } -fn simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<String> { +fn simplify_not(cx: &LateContext<'_>, curr_msrv: &Msrv, expr: &Expr<'_>) -> Option<String> { match &expr.kind { ExprKind::Binary(binop, lhs, rhs) => { if !implements_ord(cx, lhs) { @@ -389,7 +411,7 @@ fn simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<String> { Some(format!("{lhs_snippet}{op}{rhs_snippet}")) }) }, - ExprKind::MethodCall(path, receiver, [], _) => { + ExprKind::MethodCall(path, receiver, args, _) => { let type_of_receiver = cx.typeck_results().expr_ty(receiver); if !is_type_diagnostic_item(cx, type_of_receiver, sym::Option) && !is_type_diagnostic_item(cx, type_of_receiver, sym::Result) @@ -399,21 +421,41 @@ fn simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<String> { METHODS_WITH_NEGATION .iter() .copied() - .flat_map(|(a, b)| vec![(a, b), (b, a)]) - .find(|&(a, _)| { - let path: &str = path.ident.name.as_str(); - a == path + .flat_map(|(msrv, a, b)| vec![(msrv, a, b), (msrv, b, a)]) + .find(|&(msrv, a, _)| msrv.is_none_or(|msrv| curr_msrv.meets(msrv)) && a == path.ident.name.as_str()) + .and_then(|(_, _, neg_method)| { + let negated_args = args + .iter() + .map(|arg| simplify_not(cx, curr_msrv, arg)) + .collect::<Option<Vec<_>>>()? + .join(", "); + Some(format!( + "{}.{neg_method}({negated_args})", + receiver.span.get_source_text(cx)? + )) }) - .and_then(|(_, neg_method)| Some(format!("{}.{neg_method}()", receiver.span.get_source_text(cx)?))) }, + ExprKind::Closure(closure) => { + let body = cx.tcx.hir().body(closure.body); + let params = body + .params + .iter() + .map(|param| param.span.get_source_text(cx).map(|t| t.to_string())) + .collect::<Option<Vec<_>>>()? + .join(", "); + let negated = simplify_not(cx, curr_msrv, body.value)?; + Some(format!("|{params}| {negated}")) + }, + ExprKind::Unary(UnOp::Not, expr) => expr.span.get_source_text(cx).map(|t| t.to_string()), _ => None, } } -fn suggest(cx: &LateContext<'_>, suggestion: &Bool, terminals: &[&Expr<'_>]) -> String { +fn suggest(cx: &LateContext<'_>, msrv: &Msrv, suggestion: &Bool, terminals: &[&Expr<'_>]) -> String { let mut suggest_context = SuggestContext { terminals, cx, + msrv, output: String::new(), }; suggest_context.recurse(suggestion); @@ -475,7 +517,7 @@ fn terminal_stats(b: &Bool) -> Stats { stats } -impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> { +impl<'tcx> NonminimalBoolVisitor<'_, 'tcx> { fn bool_expr(&self, e: &'tcx Expr<'_>) { let mut h2q = Hir2Qmm { terminals: Vec::new(), @@ -526,7 +568,7 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> { diag.span_suggestion( e.span, "it would look like the following", - suggest(self.cx, suggestion, &h2q.terminals), + suggest(self.cx, self.msrv, suggestion, &h2q.terminals), // nonminimal_bool can produce minimal but // not human readable expressions (#3141) Applicability::Unspecified, @@ -569,12 +611,12 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> { } }; if improvements.is_empty() { - check_simplify_not(self.cx, e); + check_simplify_not(self.cx, self.msrv, e); } else { nonminimal_bool_lint( improvements .into_iter() - .map(|suggestion| suggest(self.cx, suggestion, &h2q.terminals)) + .map(|suggestion| suggest(self.cx, self.msrv, suggestion, &h2q.terminals)) .collect(), ); } @@ -582,7 +624,7 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for NonminimalBoolVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for NonminimalBoolVisitor<'_, 'tcx> { fn visit_expr(&mut self, e: &'tcx Expr<'_>) { if !e.span.from_expansion() { match &e.kind { diff --git a/src/tools/clippy/clippy_lints/src/box_default.rs b/src/tools/clippy/clippy_lints/src/box_default.rs index 8459f051d3d..40d154c0bdf 100644 --- a/src/tools/clippy/clippy_lints/src/box_default.rs +++ b/src/tools/clippy/clippy_lints/src/box_default.rs @@ -4,7 +4,7 @@ use clippy_utils::ty::expr_sig; use clippy_utils::{is_default_equivalent, path_def_id}; use rustc_errors::Applicability; use rustc_hir::def::Res; -use rustc_hir::intravisit::{walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_ty}; use rustc_hir::{Block, Expr, ExprKind, LetStmt, Node, QPath, Ty, TyKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; @@ -91,7 +91,7 @@ fn is_local_vec_expn(cx: &LateContext<'_>, expr: &Expr<'_>, ref_expr: &Expr<'_>) #[derive(Default)] struct InferVisitor(bool); -impl<'tcx> Visitor<'tcx> for InferVisitor { +impl Visitor<'_> for InferVisitor { fn visit_ty(&mut self, t: &Ty<'_>) { self.0 |= matches!(t.kind, TyKind::Infer | TyKind::OpaqueDef(..) | TyKind::TraitObject(..)); if !self.0 { diff --git a/src/tools/clippy/clippy_lints/src/byte_char_slices.rs b/src/tools/clippy/clippy_lints/src/byte_char_slices.rs index a9fe190f177..dd2620b0b9d 100644 --- a/src/tools/clippy/clippy_lints/src/byte_char_slices.rs +++ b/src/tools/clippy/clippy_lints/src/byte_char_slices.rs @@ -22,7 +22,7 @@ declare_clippy_lint! { /// ```ignore /// b"Hello" /// ``` - #[clippy::version = "1.68.0"] + #[clippy::version = "1.81.0"] pub BYTE_CHAR_SLICES, style, "hard to read byte char slice" diff --git a/src/tools/clippy/clippy_lints/src/cargo/common_metadata.rs b/src/tools/clippy/clippy_lints/src/cargo/common_metadata.rs index fed0aa8b275..6714c053913 100644 --- a/src/tools/clippy/clippy_lints/src/cargo/common_metadata.rs +++ b/src/tools/clippy/clippy_lints/src/cargo/common_metadata.rs @@ -10,27 +10,27 @@ pub(super) fn check(cx: &LateContext<'_>, metadata: &Metadata, ignore_publish: b // only run the lint if publish is `None` (`publish = true` or skipped entirely) // or if the vector isn't empty (`publish = ["something"]`) if package.publish.as_ref().filter(|publish| publish.is_empty()).is_none() || ignore_publish { - if is_empty_str(&package.description) { + if is_empty_str(package.description.as_ref()) { missing_warning(cx, package, "package.description"); } - if is_empty_str(&package.license) && is_empty_str(&package.license_file) { + if is_empty_str(package.license.as_ref()) && is_empty_str(package.license_file.as_ref()) { missing_warning(cx, package, "either package.license or package.license_file"); } - if is_empty_str(&package.repository) { + if is_empty_str(package.repository.as_ref()) { missing_warning(cx, package, "package.repository"); } - if is_empty_str(&package.readme) { + if is_empty_str(package.readme.as_ref()) { missing_warning(cx, package, "package.readme"); } - if is_empty_vec(&package.keywords) { + if is_empty_vec(package.keywords.as_ref()) { missing_warning(cx, package, "package.keywords"); } - if is_empty_vec(&package.categories) { + if is_empty_vec(package.categories.as_ref()) { missing_warning(cx, package, "package.categories"); } } @@ -42,8 +42,8 @@ fn missing_warning(cx: &LateContext<'_>, package: &cargo_metadata::Package, fiel span_lint(cx, CARGO_COMMON_METADATA, DUMMY_SP, message); } -fn is_empty_str<T: AsRef<std::ffi::OsStr>>(value: &Option<T>) -> bool { - value.as_ref().map_or(true, |s| s.as_ref().is_empty()) +fn is_empty_str<T: AsRef<std::ffi::OsStr>>(value: Option<&T>) -> bool { + value.map_or(true, |s| s.as_ref().is_empty()) } fn is_empty_vec(value: &[String]) -> bool { diff --git a/src/tools/clippy/clippy_lints/src/cargo/lint_groups_priority.rs b/src/tools/clippy/clippy_lints/src/cargo/lint_groups_priority.rs index e924542fea2..ffd6c520c9a 100644 --- a/src/tools/clippy/clippy_lints/src/cargo/lint_groups_priority.rs +++ b/src/tools/clippy/clippy_lints/src/cargo/lint_groups_priority.rs @@ -2,7 +2,7 @@ use super::LINT_GROUPS_PRIORITY; use clippy_utils::diagnostics::span_lint_and_then; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; -use rustc_lint::{unerased_lint_store, LateContext}; +use rustc_lint::{LateContext, unerased_lint_store}; use rustc_span::{BytePos, Pos, SourceFile, Span, SyntaxContext}; use serde::{Deserialize, Serialize}; use std::collections::BTreeMap; diff --git a/src/tools/clippy/clippy_lints/src/casts/borrow_as_ptr.rs b/src/tools/clippy/clippy_lints/src/casts/borrow_as_ptr.rs index b7256dd2eae..4dd51dcbc9a 100644 --- a/src/tools/clippy/clippy_lints/src/casts/borrow_as_ptr.rs +++ b/src/tools/clippy/clippy_lints/src/casts/borrow_as_ptr.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::is_no_std_crate; use clippy_utils::source::snippet_with_context; +use clippy_utils::std_or_core; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, Ty, TyKind}; use rustc_lint::LateContext; @@ -16,8 +16,8 @@ pub(super) fn check<'tcx>( ) { if matches!(cast_to.kind, TyKind::Ptr(_)) && let ExprKind::AddrOf(BorrowKind::Ref, mutability, e) = cast_expr.kind + && let Some(std_or_core) = std_or_core(cx) { - let core_or_std = if is_no_std_crate(cx) { "core" } else { "std" }; let macro_name = match mutability { Mutability::Not => "addr_of", Mutability::Mut => "addr_of_mut", @@ -40,7 +40,7 @@ pub(super) fn check<'tcx>( expr.span, "borrow as raw pointer", "try", - format!("{core_or_std}::ptr::{macro_name}!({snip})"), + format!("{std_or_core}::ptr::{macro_name}!({snip})"), Applicability::MachineApplicable, ); } diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs b/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs index 346aed7e9f1..84a44b14dde 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs @@ -10,7 +10,7 @@ use rustc_lint::LateContext; use rustc_middle::ty::{self, FloatTy, Ty}; use rustc_span::hygiene; -use super::{utils, CAST_LOSSLESS}; +use super::{CAST_LOSSLESS, utils}; pub(super) fn check( cx: &LateContext<'_>, diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs b/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs index 5708aae3f3e..40a1a9d1ce8 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs @@ -12,7 +12,7 @@ use rustc_middle::ty::{self, FloatTy, Ty}; use rustc_span::Span; use rustc_target::abi::IntegerType; -use super::{utils, CAST_ENUM_TRUNCATION, CAST_POSSIBLE_TRUNCATION}; +use super::{CAST_ENUM_TRUNCATION, CAST_POSSIBLE_TRUNCATION, utils}; fn constant_int(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<u128> { if let Some(Constant::Int(c)) = ConstEvalCtxt::new(cx).eval(expr) { diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs b/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs index 11274383595..3cf4a43b0d4 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs @@ -3,7 +3,7 @@ use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty::Ty; -use super::{utils, CAST_POSSIBLE_WRAP}; +use super::{CAST_POSSIBLE_WRAP, utils}; // this should be kept in sync with the allowed bit widths of `usize` and `isize` const ALLOWED_POINTER_SIZES: [u64; 3] = [16, 32, 64]; diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs b/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs index 035666e4d4c..1eb115ce6bd 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs @@ -4,7 +4,7 @@ use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty::{self, FloatTy, Ty}; -use super::{utils, CAST_PRECISION_LOSS}; +use super::{CAST_PRECISION_LOSS, utils}; pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { if !cast_from.is_integral() || cast_to.is_integral() { diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_sign_loss.rs b/src/tools/clippy/clippy_lints/src/casts/cast_sign_loss.rs index 9daf237344a..4be53ace687 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_sign_loss.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_sign_loss.rs @@ -3,7 +3,7 @@ use std::ops::ControlFlow; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint; -use clippy_utils::visitors::{for_each_expr_without_closures, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr_without_closures}; use clippy_utils::{method_chain_args, sext}; use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs index dbe03e4ae80..ac1a355c8d9 100644 --- a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs +++ b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs @@ -5,7 +5,7 @@ use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty::{self, Ty, UintTy}; -use super::{utils, FN_TO_NUMERIC_CAST}; +use super::{FN_TO_NUMERIC_CAST, utils}; pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { // We only want to check casts to `ty::Uint` or `ty::Int` diff --git a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs index dfbae1618ac..18e7798452e 100644 --- a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs +++ b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs @@ -5,7 +5,7 @@ use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty::{self, Ty}; -use super::{utils, FN_TO_NUMERIC_CAST_WITH_TRUNCATION}; +use super::{FN_TO_NUMERIC_CAST_WITH_TRUNCATION, utils}; pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { // We only want to check casts to `ty::Uint` or `ty::Int` diff --git a/src/tools/clippy/clippy_lints/src/casts/mod.rs b/src/tools/clippy/clippy_lints/src/casts/mod.rs index c31716fbcee..3acd4eca420 100644 --- a/src/tools/clippy/clippy_lints/src/casts/mod.rs +++ b/src/tools/clippy/clippy_lints/src/casts/mod.rs @@ -23,8 +23,8 @@ mod unnecessary_cast; mod utils; mod zero_ptr; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::is_hir_ty_cfg_dependant; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; @@ -410,19 +410,27 @@ declare_clippy_lint! { /// ### Why is this bad? /// Though `as` casts between raw pointers are not terrible, `pointer::cast_mut` and /// `pointer::cast_const` are safer because they cannot accidentally cast the pointer to another - /// type. + /// type. Or, when null pointers are involved, `null()` and `null_mut()` can be used directly. /// /// ### Example /// ```no_run /// let ptr: *const u32 = &42_u32; /// let mut_ptr = ptr as *mut u32; /// let ptr = mut_ptr as *const u32; + /// let ptr1 = std::ptr::null::<u32>() as *mut u32; + /// let ptr2 = std::ptr::null_mut::<u32>() as *const u32; + /// let ptr3 = std::ptr::null::<u32>().cast_mut(); + /// let ptr4 = std::ptr::null_mut::<u32>().cast_const(); /// ``` /// Use instead: /// ```no_run /// let ptr: *const u32 = &42_u32; /// let mut_ptr = ptr.cast_mut(); /// let ptr = mut_ptr.cast_const(); + /// let ptr1 = std::ptr::null_mut::<u32>(); + /// let ptr2 = std::ptr::null::<u32>(); + /// let ptr3 = std::ptr::null_mut::<u32>(); + /// let ptr4 = std::ptr::null::<u32>(); /// ``` #[clippy::version = "1.72.0"] pub PTR_CAST_CONSTNESS, @@ -809,6 +817,7 @@ impl<'tcx> LateLintPass<'tcx> for Casts { char_lit_as_u8::check(cx, expr); ptr_as_ptr::check(cx, expr, &self.msrv); cast_slice_different_sizes::check(cx, expr, &self.msrv); + ptr_cast_constness::check_null_ptr_cast_method(cx, expr); } extract_msrv_attr!(LateContext); diff --git a/src/tools/clippy/clippy_lints/src/casts/ptr_cast_constness.rs b/src/tools/clippy/clippy_lints/src/casts/ptr_cast_constness.rs index 7513e18d408..7518dd2435a 100644 --- a/src/tools/clippy/clippy_lints/src/casts/ptr_cast_constness.rs +++ b/src/tools/clippy/clippy_lints/src/casts/ptr_cast_constness.rs @@ -1,10 +1,12 @@ use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::std_or_core; use clippy_utils::sugg::Sugg; use rustc_errors::Applicability; -use rustc_hir::{Expr, Mutability}; +use rustc_hir::{Expr, ExprKind, Mutability, QPath}; use rustc_lint::LateContext; use rustc_middle::ty::{self, Ty, TypeVisitableExt}; +use rustc_span::sym; use super::PTR_CAST_CONSTNESS; @@ -16,8 +18,7 @@ pub(super) fn check<'tcx>( cast_to: Ty<'tcx>, msrv: &Msrv, ) { - if msrv.meets(msrvs::POINTER_CAST_CONSTNESS) - && let ty::RawPtr(from_ty, from_mutbl) = cast_from.kind() + if let ty::RawPtr(from_ty, from_mutbl) = cast_from.kind() && let ty::RawPtr(to_ty, to_mutbl) = cast_to.kind() && matches!( (from_mutbl, to_mutbl), @@ -26,20 +27,74 @@ pub(super) fn check<'tcx>( && from_ty == to_ty && !from_ty.has_erased_regions() { - let sugg = Sugg::hir(cx, cast_expr, "_"); - let constness = match *to_mutbl { - Mutability::Not => "const", - Mutability::Mut => "mut", - }; + if let ExprKind::Call(func, []) = cast_expr.kind + && let ExprKind::Path(QPath::Resolved(None, path)) = func.kind + && let Some(defid) = path.res.opt_def_id() + && let Some(prefix) = std_or_core(cx) + && let mut app = Applicability::MachineApplicable + && let sugg = format!("{}", Sugg::hir_with_applicability(cx, cast_expr, "_", &mut app)) + && let Some((_, after_lt)) = sugg.split_once("::<") + && let Some((source, target, target_func)) = match cx.tcx.get_diagnostic_name(defid) { + Some(sym::ptr_null) => Some(("const", "mutable", "null_mut")), + Some(sym::ptr_null_mut) => Some(("mutable", "const", "null")), + _ => None, + } + { + span_lint_and_sugg( + cx, + PTR_CAST_CONSTNESS, + expr.span, + format!("`as` casting to make a {source} null pointer into a {target} null pointer"), + format!("use `{target_func}()` directly instead"), + format!("{prefix}::ptr::{target_func}::<{after_lt}"), + app, + ); + return; + } + if msrv.meets(msrvs::POINTER_CAST_CONSTNESS) { + let sugg = Sugg::hir(cx, cast_expr, "_"); + let constness = match *to_mutbl { + Mutability::Not => "const", + Mutability::Mut => "mut", + }; + + span_lint_and_sugg( + cx, + PTR_CAST_CONSTNESS, + expr.span, + "`as` casting between raw pointers while changing only its constness", + format!("try `pointer::cast_{constness}`, a safer alternative"), + format!("{}.cast_{constness}()", sugg.maybe_par()), + Applicability::MachineApplicable, + ); + } + } +} + +pub(super) fn check_null_ptr_cast_method(cx: &LateContext<'_>, expr: &Expr<'_>) { + if let ExprKind::MethodCall(method, cast_expr, [], _) = expr.kind + && let ExprKind::Call(func, []) = cast_expr.kind + && let ExprKind::Path(QPath::Resolved(None, path)) = func.kind + && let Some(defid) = path.res.opt_def_id() + && let method = match (cx.tcx.get_diagnostic_name(defid), method.ident.as_str()) { + (Some(sym::ptr_null), "cast_mut") => "null_mut", + (Some(sym::ptr_null_mut), "cast_const") => "null", + _ => return, + } + && let Some(prefix) = std_or_core(cx) + && let mut app = Applicability::MachineApplicable + && let sugg = format!("{}", Sugg::hir_with_applicability(cx, cast_expr, "_", &mut app)) + && let Some((_, after_lt)) = sugg.split_once("::<") + { span_lint_and_sugg( cx, PTR_CAST_CONSTNESS, expr.span, - "`as` casting between raw pointers while changing only its constness", - format!("try `pointer::cast_{constness}`, a safer alternative"), - format!("{}.cast_{constness}()", sugg.maybe_par()), - Applicability::MachineApplicable, + "changing constness of a null pointer", + format!("use `{method}()` directly instead"), + format!("{prefix}::ptr::{method}::<{after_lt}"), + app, ); } } diff --git a/src/tools/clippy/clippy_lints/src/casts/ref_as_ptr.rs b/src/tools/clippy/clippy_lints/src/casts/ref_as_ptr.rs index 5f48b8bd206..f699bba20ed 100644 --- a/src/tools/clippy/clippy_lints/src/casts/ref_as_ptr.rs +++ b/src/tools/clippy/clippy_lints/src/casts/ref_as_ptr.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::Sugg; -use clippy_utils::{expr_use_ctxt, is_no_std_crate, ExprUseNode}; +use clippy_utils::{ExprUseNode, expr_use_ctxt, std_or_core}; use rustc_errors::Applicability; use rustc_hir::{Expr, Mutability, Ty, TyKind}; use rustc_lint::LateContext; @@ -25,8 +25,8 @@ pub(super) fn check<'tcx>( && let use_cx = expr_use_ctxt(cx, expr) // TODO: only block the lint if `cast_expr` is a temporary && !matches!(use_cx.use_node(cx), ExprUseNode::LetStmt(_) | ExprUseNode::ConstStatic(_)) + && let Some(std_or_core) = std_or_core(cx) { - let core_or_std = if is_no_std_crate(cx) { "core" } else { "std" }; let fn_name = match to_mutbl { Mutability::Not => "from_ref", Mutability::Mut => "from_mut", @@ -56,7 +56,7 @@ pub(super) fn check<'tcx>( expr.span, "reference as raw pointer", "try", - format!("{core_or_std}::ptr::{fn_name}{turbofish}({cast_expr_sugg})"), + format!("{std_or_core}::ptr::{fn_name}{turbofish}({cast_expr_sugg})"), app, ); } diff --git a/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs b/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs index 566adc83d69..811d33c8bde 100644 --- a/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs +++ b/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::numeric_literal::NumericLiteral; -use clippy_utils::source::{snippet_opt, SpanRangeExt}; -use clippy_utils::visitors::{for_each_expr_without_closures, Visitable}; +use clippy_utils::source::{SpanRangeExt, snippet_opt}; +use clippy_utils::visitors::{Visitable, for_each_expr_without_closures}; use clippy_utils::{get_parent_expr, is_hir_ty_cfg_dependant, is_ty_alias, path_to_local}; use rustc_ast::{LitFloatType, LitIntType, LitKind}; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/casts/utils.rs b/src/tools/clippy/clippy_lints/src/casts/utils.rs index 5a4f20f0990..5ccba92a0af 100644 --- a/src/tools/clippy/clippy_lints/src/casts/utils.rs +++ b/src/tools/clippy/clippy_lints/src/casts/utils.rs @@ -1,4 +1,4 @@ -use clippy_utils::ty::{read_explicit_enum_value, EnumValue}; +use clippy_utils::ty::{EnumValue, read_explicit_enum_value}; use rustc_middle::ty::{self, AdtDef, IntTy, Ty, TyCtxt, UintTy, VariantDiscr}; /// Returns the size in bits of an integral type. diff --git a/src/tools/clippy/clippy_lints/src/cfg_not_test.rs b/src/tools/clippy/clippy_lints/src/cfg_not_test.rs index d820c1e0720..84136a2e6c2 100644 --- a/src/tools/clippy/clippy_lints/src/cfg_not_test.rs +++ b/src/tools/clippy/clippy_lints/src/cfg_not_test.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; -use rustc_ast::NestedMetaItem; +use rustc_ast::MetaItemInner; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; @@ -22,7 +22,7 @@ declare_clippy_lint! { /// # fn important_check() {} /// important_check(); /// ``` - #[clippy::version = "1.73.0"] + #[clippy::version = "1.81.0"] pub CFG_NOT_TEST, restriction, "enforce against excluding code from test builds" @@ -47,7 +47,7 @@ impl EarlyLintPass for CfgNotTest { } } -fn contains_not_test(list: Option<&[NestedMetaItem]>, not: bool) -> bool { +fn contains_not_test(list: Option<&[MetaItemInner]>, not: bool) -> bool { list.is_some_and(|list| { list.iter().any(|item| { item.ident().is_some_and(|ident| match ident.name { diff --git a/src/tools/clippy/clippy_lints/src/checked_conversions.rs b/src/tools/clippy/clippy_lints/src/checked_conversions.rs index dd7c34d1e46..2e7f91a842e 100644 --- a/src/tools/clippy/clippy_lints/src/checked_conversions.rs +++ b/src/tools/clippy/clippy_lints/src/checked_conversions.rs @@ -1,8 +1,8 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; -use clippy_utils::{is_in_const_context, is_integer_literal, SpanlessEq}; +use clippy_utils::{SpanlessEq, is_in_const_context, is_integer_literal}; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, QPath, TyKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; @@ -48,7 +48,7 @@ impl CheckedConversions { impl_lint_pass!(CheckedConversions => [CHECKED_CONVERSIONS]); -impl<'tcx> LateLintPass<'tcx> for CheckedConversions { +impl LateLintPass<'_> for CheckedConversions { fn check_expr(&mut self, cx: &LateContext<'_>, item: &Expr<'_>) { if let ExprKind::Binary(op, lhs, rhs) = item.kind && let (lt1, gt1, op2) = match op.node { diff --git a/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs b/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs index 0099eefbc8d..495d8ce3fa7 100644 --- a/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs +++ b/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::source::{IntoSpan, SpanRangeExt}; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::for_each_expr_without_closures; -use clippy_utils::{get_async_fn_body, is_async_fn, LimitStack}; +use clippy_utils::{LimitStack, get_async_fn_body, is_async_fn}; use core::ops::ControlFlow; use rustc_ast::ast::Attribute; use rustc_hir::intravisit::FnKind; @@ -11,7 +11,7 @@ use rustc_hir::{Body, Expr, ExprKind, FnDecl}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/collection_is_never_read.rs b/src/tools/clippy/clippy_lints/src/collection_is_never_read.rs index c6847411c75..8276e53648c 100644 --- a/src/tools/clippy/clippy_lints/src/collection_is_never_read.rs +++ b/src/tools/clippy/clippy_lints/src/collection_is_never_read.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::{get_type_diagnostic_name, is_type_lang_item}; -use clippy_utils::visitors::{for_each_expr, Visitable}; +use clippy_utils::visitors::{Visitable, for_each_expr}; use clippy_utils::{get_enclosing_block, path_to_local_id}; use core::ops::ControlFlow; use rustc_hir::{Body, ExprKind, HirId, LangItem, LetStmt, Node, PatKind}; diff --git a/src/tools/clippy/clippy_lints/src/comparison_chain.rs b/src/tools/clippy/clippy_lints/src/comparison_chain.rs index 5d78744e9b5..b9baf9af248 100644 --- a/src/tools/clippy/clippy_lints/src/comparison_chain.rs +++ b/src/tools/clippy/clippy_lints/src/comparison_chain.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::ty::implements_trait; -use clippy_utils::{if_sequence, is_else_clause, is_in_const_context, SpanlessEq}; +use clippy_utils::{SpanlessEq, if_sequence, is_else_clause, is_in_const_context}; use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/copies.rs b/src/tools/clippy/clippy_lints/src/copies.rs index 86e0368c4e4..d90a22bb62a 100644 --- a/src/tools/clippy/clippy_lints/src/copies.rs +++ b/src/tools/clippy/clippy_lints/src/copies.rs @@ -1,16 +1,17 @@ use clippy_config::Conf; use clippy_utils::diagnostics::{span_lint_and_note, span_lint_and_then}; -use clippy_utils::source::{first_line_of_span, indent_of, reindent_multiline, snippet, IntoSpan, SpanRangeExt}; -use clippy_utils::ty::{needs_ordered_drop, InteriorMut}; +use clippy_utils::source::{IntoSpan, SpanRangeExt, first_line_of_span, indent_of, reindent_multiline, snippet}; +use clippy_utils::ty::{InteriorMut, needs_ordered_drop}; use clippy_utils::visitors::for_each_expr_without_closures; use clippy_utils::{ - capture_local_usage, eq_expr_value, find_binding_init, get_enclosing_block, hash_expr, hash_stmt, if_sequence, - is_else_clause, is_lint_allowed, path_to_local, search_same, ContainsName, HirEqInterExpr, SpanlessEq, + ContainsName, HirEqInterExpr, SpanlessEq, capture_local_usage, eq_expr_value, find_binding_init, + get_enclosing_block, hash_expr, hash_stmt, if_sequence, is_else_clause, is_lint_allowed, path_to_local, + search_same, }; use core::iter; use core::ops::ControlFlow; use rustc_errors::Applicability; -use rustc_hir::{intravisit, BinOpKind, Block, Expr, ExprKind, HirId, HirIdSet, Stmt, StmtKind}; +use rustc_hir::{BinOpKind, Block, Expr, ExprKind, HirId, HirIdSet, Stmt, StmtKind, intravisit}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::TyCtxt; use rustc_session::impl_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs b/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs index 678bdbc0ffb..c8f81413728 100644 --- a/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs +++ b/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs @@ -5,8 +5,8 @@ use rustc_ast::tokenstream::{TokenStream, TokenTree}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/dbg_macro.rs b/src/tools/clippy/clippy_lints/src/dbg_macro.rs index 93c8fff05e9..a96c86f0765 100644 --- a/src/tools/clippy/clippy_lints/src/dbg_macro.rs +++ b/src/tools/clippy/clippy_lints/src/dbg_macro.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_in_test; -use clippy_utils::macros::{macro_backtrace, MacroCall}; +use clippy_utils::macros::{MacroCall, macro_backtrace}; use clippy_utils::source::snippet_with_applicability; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; @@ -9,7 +9,7 @@ use rustc_hir::{Expr, ExprKind, Node}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span, SyntaxContext}; +use rustc_span::{Span, SyntaxContext, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/declared_lints.rs b/src/tools/clippy/clippy_lints/src/declared_lints.rs index 60e51713173..9cec672beb0 100644 --- a/src/tools/clippy/clippy_lints/src/declared_lints.rs +++ b/src/tools/clippy/clippy_lints/src/declared_lints.rs @@ -49,8 +49,6 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::attrs::DEPRECATED_CLIPPY_CFG_ATTR_INFO, crate::attrs::DEPRECATED_SEMVER_INFO, crate::attrs::DUPLICATED_ATTRIBUTES_INFO, - crate::attrs::EMPTY_LINE_AFTER_DOC_COMMENTS_INFO, - crate::attrs::EMPTY_LINE_AFTER_OUTER_ATTR_INFO, crate::attrs::INLINE_ALWAYS_INFO, crate::attrs::MIXED_ATTRIBUTES_STYLE_INFO, crate::attrs::NON_MINIMAL_CFG_INFO, @@ -138,6 +136,8 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::doc::DOC_LINK_WITH_QUOTES_INFO, crate::doc::DOC_MARKDOWN_INFO, crate::doc::EMPTY_DOCS_INFO, + crate::doc::EMPTY_LINE_AFTER_DOC_COMMENTS_INFO, + crate::doc::EMPTY_LINE_AFTER_OUTER_ATTR_INFO, crate::doc::MISSING_ERRORS_DOC_INFO, crate::doc::MISSING_PANICS_DOC_INFO, crate::doc::MISSING_SAFETY_DOC_INFO, @@ -202,6 +202,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::functions::MUST_USE_CANDIDATE_INFO, crate::functions::MUST_USE_UNIT_INFO, crate::functions::NOT_UNSAFE_PTR_ARG_DEREF_INFO, + crate::functions::REF_OPTION_INFO, crate::functions::RENAMED_FUNCTION_PARAMS_INFO, crate::functions::RESULT_LARGE_ERR_INFO, crate::functions::RESULT_UNIT_ERR_INFO, @@ -217,6 +218,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::implicit_return::IMPLICIT_RETURN_INFO, crate::implicit_saturating_add::IMPLICIT_SATURATING_ADD_INFO, crate::implicit_saturating_sub::IMPLICIT_SATURATING_SUB_INFO, + crate::implicit_saturating_sub::INVERTED_SATURATING_SUB_INFO, crate::implied_bounds_in_impls::IMPLIED_BOUNDS_IN_IMPLS_INFO, crate::incompatible_msrv::INCOMPATIBLE_MSRV_INFO, crate::inconsistent_struct_constructor::INCONSISTENT_STRUCT_CONSTRUCTOR_INFO, @@ -300,10 +302,12 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::manual_async_fn::MANUAL_ASYNC_FN_INFO, crate::manual_bits::MANUAL_BITS_INFO, crate::manual_clamp::MANUAL_CLAMP_INFO, + crate::manual_div_ceil::MANUAL_DIV_CEIL_INFO, crate::manual_float_methods::MANUAL_IS_FINITE_INFO, crate::manual_float_methods::MANUAL_IS_INFINITE_INFO, crate::manual_hash_one::MANUAL_HASH_ONE_INFO, crate::manual_is_ascii_check::MANUAL_IS_ASCII_CHECK_INFO, + crate::manual_is_power_of_two::MANUAL_IS_POWER_OF_TWO_INFO, crate::manual_let_else::MANUAL_LET_ELSE_INFO, crate::manual_main_separator_str::MANUAL_MAIN_SEPARATOR_STR_INFO, crate::manual_non_exhaustive::MANUAL_NON_EXHAUSTIVE_INFO, @@ -464,6 +468,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::methods::UNNECESSARY_FALLIBLE_CONVERSIONS_INFO, crate::methods::UNNECESSARY_FILTER_MAP_INFO, crate::methods::UNNECESSARY_FIND_MAP_INFO, + crate::methods::UNNECESSARY_FIRST_THEN_CHECK_INFO, crate::methods::UNNECESSARY_FOLD_INFO, crate::methods::UNNECESSARY_GET_THEN_CHECK_INFO, crate::methods::UNNECESSARY_JOIN_INFO, @@ -486,6 +491,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::misc::SHORT_CIRCUIT_STATEMENT_INFO, crate::misc::TOPLEVEL_REF_ARG_INFO, crate::misc::USED_UNDERSCORE_BINDING_INFO, + crate::misc::USED_UNDERSCORE_ITEMS_INFO, crate::misc_early::BUILTIN_TYPE_SHADOW_INFO, crate::misc_early::DOUBLE_NEG_INFO, crate::misc_early::DUPLICATE_UNDERSCORE_ARGUMENT_INFO, @@ -553,6 +559,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::non_expressive_names::SIMILAR_NAMES_INFO, crate::non_octal_unix_permissions::NON_OCTAL_UNIX_PERMISSIONS_INFO, crate::non_send_fields_in_send_ty::NON_SEND_FIELDS_IN_SEND_TY_INFO, + crate::non_zero_suggestions::NON_ZERO_SUGGESTIONS_INFO, crate::nonstandard_macro_braces::NONSTANDARD_MACRO_BRACES_INFO, crate::octal_escapes::OCTAL_ESCAPES_INFO, crate::only_used_in_recursion::ONLY_USED_IN_RECURSION_INFO, @@ -598,6 +605,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::pathbuf_init_then_push::PATHBUF_INIT_THEN_PUSH_INFO, crate::pattern_type_mismatch::PATTERN_TYPE_MISMATCH_INFO, crate::permissions_set_readonly_false::PERMISSIONS_SET_READONLY_FALSE_INFO, + crate::pointers_in_nomem_asm_block::POINTERS_IN_NOMEM_ASM_BLOCK_INFO, crate::precedence::PRECEDENCE_INFO, crate::ptr::CMP_NULL_INFO, crate::ptr::INVALID_NULL_PTR_USAGE_INFO, @@ -741,6 +749,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::unused_result_ok::UNUSED_RESULT_OK_INFO, crate::unused_rounding::UNUSED_ROUNDING_INFO, crate::unused_self::UNUSED_SELF_INFO, + crate::unused_trait_names::UNUSED_TRAIT_NAMES_INFO, crate::unused_unit::UNUSED_UNIT_INFO, crate::unwrap::PANICKING_UNWRAP_INFO, crate::unwrap::UNNECESSARY_UNWRAP_INFO, @@ -767,4 +776,5 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::zero_div_zero::ZERO_DIVIDED_BY_ZERO_INFO, crate::zero_repeat_side_effects::ZERO_REPEAT_SIDE_EFFECTS_INFO, crate::zero_sized_map_values::ZERO_SIZED_MAP_VALUES_INFO, + crate::zombie_processes::ZOMBIE_PROCESSES_INFO, ]; diff --git a/src/tools/clippy/clippy_lints/src/default.rs b/src/tools/clippy/clippy_lints/src/default.rs index 0b7279f2b36..dc10b64698b 100644 --- a/src/tools/clippy/clippy_lints/src/default.rs +++ b/src/tools/clippy/clippy_lints/src/default.rs @@ -11,7 +11,7 @@ use rustc_middle::ty; use rustc_middle::ty::print::with_forced_trimmed_paths; use rustc_session::impl_lint_pass; use rustc_span::symbol::{Ident, Symbol}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/default_constructed_unit_structs.rs b/src/tools/clippy/clippy_lints/src/default_constructed_unit_structs.rs index 13778175496..33a97222b8f 100644 --- a/src/tools/clippy/clippy_lints/src/default_constructed_unit_structs.rs +++ b/src/tools/clippy/clippy_lints/src/default_constructed_unit_structs.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::is_ty_alias; -use hir::def::Res; use hir::ExprKind; +use hir::def::Res; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/default_instead_of_iter_empty.rs b/src/tools/clippy/clippy_lints/src/default_instead_of_iter_empty.rs index ac49e6f1a48..056e39c02af 100644 --- a/src/tools/clippy/clippy_lints/src/default_instead_of_iter_empty.rs +++ b/src/tools/clippy/clippy_lints/src/default_instead_of_iter_empty.rs @@ -2,10 +2,10 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; use clippy_utils::{last_path_segment, std_or_core}; use rustc_errors::Applicability; -use rustc_hir::{def, Expr, ExprKind, GenericArg, QPath, TyKind}; +use rustc_hir::{Expr, ExprKind, GenericArg, QPath, TyKind, def}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, SyntaxContext}; +use rustc_span::{SyntaxContext, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs b/src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs index 05c3cd3c814..4808c372754 100644 --- a/src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs +++ b/src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs @@ -3,7 +3,7 @@ use clippy_utils::numeric_literal; use clippy_utils::source::snippet_opt; use rustc_ast::ast::{LitFloatType, LitIntType, LitKind}; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_expr, walk_stmt, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr, walk_stmt}; use rustc_hir::{Block, Body, ConstContext, Expr, ExprKind, FnRetTy, HirId, Lit, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; @@ -119,7 +119,7 @@ impl<'a, 'tcx> NumericFallbackVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for NumericFallbackVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for NumericFallbackVisitor<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { match &expr.kind { ExprKind::Block( diff --git a/src/tools/clippy/clippy_lints/src/dereference.rs b/src/tools/clippy/clippy_lints/src/dereference.rs index 0e55d3db469..f34f5e05606 100644 --- a/src/tools/clippy/clippy_lints/src/dereference.rs +++ b/src/tools/clippy/clippy_lints/src/dereference.rs @@ -3,14 +3,14 @@ use clippy_utils::source::{snippet_with_applicability, snippet_with_context}; use clippy_utils::sugg::has_enclosing_paren; use clippy_utils::ty::{implements_trait, is_manually_drop}; use clippy_utils::{ - expr_use_ctxt, get_parent_expr, is_block_like, is_lint_allowed, path_to_local, peel_middle_ty_refs, DefinedTy, - ExprUseNode, + DefinedTy, ExprUseNode, expr_use_ctxt, get_parent_expr, is_block_like, is_lint_allowed, path_to_local, + peel_middle_ty_refs, }; use core::mem; use rustc_ast::util::parser::{PREC_PREFIX, PREC_UNAMBIGUOUS}; use rustc_data_structures::fx::FxIndexMap; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_ty}; use rustc_hir::{ self as hir, BindingMode, Body, BodyId, BorrowKind, Expr, ExprKind, HirId, MatchSource, Mutability, Node, Pat, PatKind, Path, QPath, TyKind, UnOp, @@ -290,13 +290,10 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { && let Some(ty) = use_node.defined_ty(cx) && TyCoercionStability::for_defined_ty(cx, ty, use_node.is_return()).is_deref_stable() { - self.state = Some(( - State::ExplicitDeref { mutability: None }, - StateData { - first_expr: expr, - adjusted_ty, - }, - )); + self.state = Some((State::ExplicitDeref { mutability: None }, StateData { + first_expr: expr, + adjusted_ty, + })); } }, RefOp::Method { mutbl, is_ufcs } @@ -458,13 +455,10 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { && next_adjust.map_or(true, |a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_))) && iter.all(|a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_))) { - self.state = Some(( - State::Borrow { mutability }, - StateData { - first_expr: expr, - adjusted_ty, - }, - )); + self.state = Some((State::Borrow { mutability }, StateData { + first_expr: expr, + adjusted_ty, + })); } }, _ => {}, @@ -508,13 +502,10 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { let stability = state.stability; report(cx, expr, State::DerefedBorrow(state), data, typeck); if stability.is_deref_stable() { - self.state = Some(( - State::Borrow { mutability }, - StateData { - first_expr: expr, - adjusted_ty, - }, - )); + self.state = Some((State::Borrow { mutability }, StateData { + first_expr: expr, + adjusted_ty, + })); } }, (Some((State::DerefedBorrow(state), data)), RefOp::Deref) => { @@ -539,13 +530,10 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { } else if stability.is_deref_stable() && let Some(parent) = get_parent_expr(cx, expr) { - self.state = Some(( - State::ExplicitDeref { mutability: None }, - StateData { - first_expr: parent, - adjusted_ty, - }, - )); + self.state = Some((State::ExplicitDeref { mutability: None }, StateData { + first_expr: parent, + adjusted_ty, + })); } }, @@ -1138,20 +1126,17 @@ impl<'tcx> Dereferencing<'tcx> { if let Some(outer_pat) = self.ref_locals.get_mut(&local) { if let Some(pat) = outer_pat { // Check for auto-deref - if !matches!( - cx.typeck_results().expr_adjustments(e), - [ - Adjustment { - kind: Adjust::Deref(_), - .. - }, - Adjustment { - kind: Adjust::Deref(_), - .. - }, + if !matches!(cx.typeck_results().expr_adjustments(e), [ + Adjustment { + kind: Adjust::Deref(_), + .. + }, + Adjustment { + kind: Adjust::Deref(_), .. - ] - ) { + }, + .. + ]) { match get_parent_expr(cx, e) { // Field accesses are the same no matter the number of references. Some(Expr { diff --git a/src/tools/clippy/clippy_lints/src/derivable_impls.rs b/src/tools/clippy/clippy_lints/src/derivable_impls.rs index f27f68e2cbc..2920bbb4c81 100644 --- a/src/tools/clippy/clippy_lints/src/derivable_impls.rs +++ b/src/tools/clippy/clippy_lints/src/derivable_impls.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::indent_of; use clippy_utils::{is_default_equivalent, peel_blocks}; diff --git a/src/tools/clippy/clippy_lints/src/derive.rs b/src/tools/clippy/clippy_lints/src/derive.rs index 649c480fb92..82a66cc9202 100644 --- a/src/tools/clippy/clippy_lints/src/derive.rs +++ b/src/tools/clippy/clippy_lints/src/derive.rs @@ -3,7 +3,7 @@ use clippy_utils::ty::{implements_trait, implements_trait_with_env, is_copy}; use clippy_utils::{has_non_exhaustive_attr, is_lint_allowed, match_def_path, paths}; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; -use rustc_hir::intravisit::{walk_expr, walk_fn, walk_item, FnKind, Visitor}; +use rustc_hir::intravisit::{FnKind, Visitor, walk_expr, walk_fn, walk_item}; use rustc_hir::{ self as hir, BlockCheckMode, BodyId, Expr, ExprKind, FnDecl, Impl, Item, ItemKind, Safety, UnsafeSource, }; @@ -15,7 +15,7 @@ use rustc_middle::ty::{ }; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -385,7 +385,7 @@ fn check_unsafe_derive_deserialize<'tcx>( && cx .tcx .inherent_impls(def.did()) - .into_iter() + .iter() .map(|imp_did| cx.tcx.hir().expect_item(imp_did.expect_local())) .any(|imp| has_unsafe(cx, imp)) { diff --git a/src/tools/clippy/clippy_lints/src/doc/empty_line_after.rs b/src/tools/clippy/clippy_lints/src/doc/empty_line_after.rs new file mode 100644 index 00000000000..de7a2c2433f --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/doc/empty_line_after.rs @@ -0,0 +1,342 @@ +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::source::{SpanRangeExt, snippet_indent}; +use clippy_utils::tokenize_with_text; +use itertools::Itertools; +use rustc_ast::token::CommentKind; +use rustc_ast::{AttrKind, AttrStyle, Attribute}; +use rustc_errors::{Applicability, Diag, SuggestionStyle}; +use rustc_hir::{ItemKind, Node}; +use rustc_lexer::TokenKind; +use rustc_lint::LateContext; +use rustc_span::{BytePos, ExpnKind, InnerSpan, Span, SpanData}; + +use super::{EMPTY_LINE_AFTER_DOC_COMMENTS, EMPTY_LINE_AFTER_OUTER_ATTR}; + +#[derive(Debug, PartialEq, Clone, Copy)] +enum StopKind { + Attr, + Doc(CommentKind), +} + +impl StopKind { + fn is_doc(self) -> bool { + matches!(self, StopKind::Doc(_)) + } +} + +#[derive(Debug)] +struct Stop { + span: Span, + kind: StopKind, + first: usize, + last: usize, +} + +impl Stop { + fn convert_to_inner(&self) -> (Span, String) { + let inner = match self.kind { + // #|[...] + StopKind::Attr => InnerSpan::new(1, 1), + // /// or /** + // ^ ^ + StopKind::Doc(_) => InnerSpan::new(2, 3), + }; + (self.span.from_inner(inner), "!".into()) + } + + fn comment_out(&self, cx: &LateContext<'_>, suggestions: &mut Vec<(Span, String)>) { + match self.kind { + StopKind::Attr => { + if cx.tcx.sess.source_map().is_multiline(self.span) { + suggestions.extend([ + (self.span.shrink_to_lo(), "/* ".into()), + (self.span.shrink_to_hi(), " */".into()), + ]); + } else { + suggestions.push((self.span.shrink_to_lo(), "// ".into())); + } + }, + StopKind::Doc(CommentKind::Line) => suggestions.push((self.span.shrink_to_lo(), "// ".into())), + StopKind::Doc(CommentKind::Block) => { + // /** outer */ /*! inner */ + // ^ ^ + let asterisk = self.span.from_inner(InnerSpan::new(1, 2)); + suggestions.push((asterisk, String::new())); + }, + } + } + + fn from_attr(cx: &LateContext<'_>, attr: &Attribute) -> Option<Self> { + let SpanData { lo, hi, .. } = attr.span.data(); + let file = cx.tcx.sess.source_map().lookup_source_file(lo); + + Some(Self { + span: attr.span, + kind: match attr.kind { + AttrKind::Normal(_) => StopKind::Attr, + AttrKind::DocComment(comment_kind, _) => StopKind::Doc(comment_kind), + }, + first: file.lookup_line(file.relative_position(lo))?, + last: file.lookup_line(file.relative_position(hi))?, + }) + } +} + +/// Represents a set of attrs/doc comments separated by 1 or more empty lines +/// +/// ```ignore +/// /// chunk 1 docs +/// // not an empty line so also part of chunk 1 +/// #[chunk_1_attrs] // <-- prev_stop +/// +/// /* gap */ +/// +/// /// chunk 2 docs // <-- next_stop +/// #[chunk_2_attrs] +/// ``` +struct Gap<'a> { + /// The span of individual empty lines including the newline at the end of the line + empty_lines: Vec<Span>, + has_comment: bool, + next_stop: &'a Stop, + prev_stop: &'a Stop, + /// The chunk that includes [`prev_stop`](Self::prev_stop) + prev_chunk: &'a [Stop], +} + +impl<'a> Gap<'a> { + fn new(cx: &LateContext<'_>, prev_chunk: &'a [Stop], next_chunk: &'a [Stop]) -> Option<Self> { + let prev_stop = prev_chunk.last()?; + let next_stop = next_chunk.first()?; + let gap_span = prev_stop.span.between(next_stop.span); + let gap_snippet = gap_span.get_source_text(cx)?; + + let mut has_comment = false; + let mut empty_lines = Vec::new(); + + for (token, source, inner_span) in tokenize_with_text(&gap_snippet) { + match token { + TokenKind::BlockComment { + doc_style: None, + terminated: true, + } + | TokenKind::LineComment { doc_style: None } => has_comment = true, + TokenKind::Whitespace => { + let newlines = source.bytes().positions(|b| b == b'\n'); + empty_lines.extend( + newlines + .tuple_windows() + .map(|(a, b)| InnerSpan::new(inner_span.start + a + 1, inner_span.start + b)) + .map(|inner_span| gap_span.from_inner(inner_span)), + ); + }, + // Ignore cfg_attr'd out attributes as they may contain empty lines, could also be from macro + // shenanigans + _ => return None, + } + } + + (!empty_lines.is_empty()).then_some(Self { + empty_lines, + has_comment, + next_stop, + prev_stop, + prev_chunk, + }) + } + + fn contiguous_empty_lines(&self) -> impl Iterator<Item = Span> + '_ { + self.empty_lines + // The `+ BytePos(1)` means "next line", because each empty line span is "N:1-N:1". + .chunk_by(|a, b| a.hi() + BytePos(1) == b.lo()) + .map(|chunk| { + let first = chunk.first().expect("at least one empty line"); + let last = chunk.last().expect("at least one empty line"); + // The BytePos subtraction here is safe, as before an empty line, there must be at least one + // attribute/comment. The span needs to start at the end of the previous line. + first.with_lo(first.lo() - BytePos(1)).with_hi(last.hi()) + }) + } +} + +/// If the node the attributes/docs apply to is the first in the module/crate suggest converting +/// them to inner attributes/docs +fn suggest_inner(cx: &LateContext<'_>, diag: &mut Diag<'_, ()>, kind: StopKind, gaps: &[Gap<'_>]) { + let Some(owner) = cx.last_node_with_lint_attrs.as_owner() else { + return; + }; + let parent_desc = match cx.tcx.parent_hir_node(owner.into()) { + Node::Item(item) + if let ItemKind::Mod(parent_mod) = item.kind + && let [first, ..] = parent_mod.item_ids + && first.owner_id == owner => + { + "parent module" + }, + Node::Crate(crate_mod) + if let Some(first) = crate_mod + .item_ids + .iter() + .map(|&id| cx.tcx.hir().item(id)) + // skip prelude imports + .find(|item| !matches!(item.span.ctxt().outer_expn_data().kind, ExpnKind::AstPass(_))) + && first.owner_id == owner => + { + "crate" + }, + _ => return, + }; + + diag.multipart_suggestion_verbose( + match kind { + StopKind::Attr => format!("if the attribute should apply to the {parent_desc} use an inner attribute"), + StopKind::Doc(_) => format!("if the comment should document the {parent_desc} use an inner doc comment"), + }, + gaps.iter() + .flat_map(|gap| gap.prev_chunk) + .map(Stop::convert_to_inner) + .collect(), + Applicability::MaybeIncorrect, + ); +} + +fn check_gaps(cx: &LateContext<'_>, gaps: &[Gap<'_>]) -> bool { + let Some(first_gap) = gaps.first() else { + return false; + }; + let empty_lines = || gaps.iter().flat_map(|gap| gap.empty_lines.iter().copied()); + let contiguous_empty_lines = || gaps.iter().flat_map(Gap::contiguous_empty_lines); + let mut has_comment = false; + let mut has_attr = false; + for gap in gaps { + has_comment |= gap.has_comment; + if !has_attr { + has_attr = gap.prev_chunk.iter().any(|stop| stop.kind == StopKind::Attr); + } + } + let kind = first_gap.prev_stop.kind; + let (lint, kind_desc) = match kind { + StopKind::Attr => (EMPTY_LINE_AFTER_OUTER_ATTR, "outer attribute"), + StopKind::Doc(_) => (EMPTY_LINE_AFTER_DOC_COMMENTS, "doc comment"), + }; + let (lines, are, them) = if empty_lines().nth(1).is_some() { + ("lines", "are", "them") + } else { + ("line", "is", "it") + }; + span_lint_and_then( + cx, + lint, + first_gap.prev_stop.span.to(empty_lines().last().unwrap()), + format!("empty {lines} after {kind_desc}"), + |diag| { + if let Some(owner) = cx.last_node_with_lint_attrs.as_owner() { + let def_id = owner.to_def_id(); + let def_descr = cx.tcx.def_descr(def_id); + diag.span_label(cx.tcx.def_span(def_id), match kind { + StopKind::Attr => format!("the attribute applies to this {def_descr}"), + StopKind::Doc(_) => format!("the comment documents this {def_descr}"), + }); + } + + diag.multipart_suggestion_with_style( + format!("if the empty {lines} {are} unintentional remove {them}"), + contiguous_empty_lines() + .map(|empty_lines| (empty_lines, String::new())) + .collect(), + Applicability::MaybeIncorrect, + SuggestionStyle::HideCodeAlways, + ); + + if has_comment && kind.is_doc() { + // Likely doc comments that applied to some now commented out code + // + // /// Old docs for Foo + // // struct Foo; + + let mut suggestions = Vec::new(); + for stop in gaps.iter().flat_map(|gap| gap.prev_chunk) { + stop.comment_out(cx, &mut suggestions); + } + let name = match cx.tcx.hir().opt_name(cx.last_node_with_lint_attrs) { + Some(name) => format!("`{name}`"), + None => "this".into(), + }; + diag.multipart_suggestion_verbose( + format!("if the doc comment should not document {name} comment it out"), + suggestions, + Applicability::MaybeIncorrect, + ); + } else { + suggest_inner(cx, diag, kind, gaps); + } + + if kind == StopKind::Doc(CommentKind::Line) + && gaps + .iter() + .all(|gap| !gap.has_comment && gap.next_stop.kind == StopKind::Doc(CommentKind::Line)) + { + // Commentless empty gaps between line doc comments, possibly intended to be part of the markdown + + let indent = snippet_indent(cx, first_gap.prev_stop.span).unwrap_or_default(); + diag.multipart_suggestion_verbose( + format!("if the documentation should include the empty {lines} include {them} in the comment"), + empty_lines() + .map(|empty_line| (empty_line, format!("{indent}///"))) + .collect(), + Applicability::MaybeIncorrect, + ); + } + }, + ); + kind.is_doc() +} + +/// Returns `true` if [`EMPTY_LINE_AFTER_DOC_COMMENTS`] triggered, used to skip other doc comment +/// lints where they would be confusing +/// +/// [`EMPTY_LINE_AFTER_OUTER_ATTR`] is also here to share an implementation but does not return +/// `true` if it triggers +pub(super) fn check(cx: &LateContext<'_>, attrs: &[Attribute]) -> bool { + let mut outer = attrs + .iter() + .filter(|attr| attr.style == AttrStyle::Outer && !attr.span.from_expansion()) + .map(|attr| Stop::from_attr(cx, attr)) + .collect::<Option<Vec<_>>>() + .unwrap_or_default(); + + if outer.is_empty() { + return false; + } + + // Push a fake attribute Stop for the item itself so we check for gaps between the last outer + // attr/doc comment and the item they apply to + let span = cx.tcx.hir().span(cx.last_node_with_lint_attrs); + if !span.from_expansion() + && let Ok(line) = cx.tcx.sess.source_map().lookup_line(span.lo()) + { + outer.push(Stop { + span, + kind: StopKind::Attr, + first: line.line, + // last doesn't need to be accurate here, we don't compare it with anything + last: line.line, + }); + } + + let mut gaps = Vec::new(); + let mut last = 0; + for pos in outer + .array_windows() + .positions(|[a, b]| b.first.saturating_sub(a.last) > 1) + { + // we want to be after the first stop in the window + let pos = pos + 1; + if let Some(gap) = Gap::new(cx, &outer[last..pos], &outer[pos..]) { + last = pos; + gaps.push(gap); + } + } + + check_gaps(cx, &gaps) +} diff --git a/src/tools/clippy/clippy_lints/src/doc/lazy_continuation.rs b/src/tools/clippy/clippy_lints/src/doc/lazy_continuation.rs index 771bcac2441..f9e4a43c0e7 100644 --- a/src/tools/clippy/clippy_lints/src/doc/lazy_continuation.rs +++ b/src/tools/clippy/clippy_lints/src/doc/lazy_continuation.rs @@ -22,7 +22,6 @@ pub(super) fn check( range: Range<usize>, mut span: Span, containers: &[super::Container], - line_break_span: Span, ) { if doc[range.clone()].contains('\t') { // We don't do tab stops correctly. @@ -52,29 +51,6 @@ pub(super) fn check( "doc list item without indentation" }; span_lint_and_then(cx, DOC_LAZY_CONTINUATION, span, msg, |diag| { - let snippet = clippy_utils::source::snippet(cx, line_break_span, ""); - if snippet.chars().filter(|&c| c == '\n').count() > 1 - && let Some(doc_comment_start) = snippet.rfind('\n') - && let doc_comment = snippet[doc_comment_start..].trim() - && (doc_comment == "///" || doc_comment == "//!") - { - // suggest filling in a blank line - diag.span_suggestion_verbose( - line_break_span.shrink_to_lo(), - "if this should be its own paragraph, add a blank doc comment line", - format!("\n{doc_comment}"), - Applicability::MaybeIncorrect, - ); - if ccount > 0 || blockquote_level > 0 { - diag.help("if this not intended to be a quote at all, escape it with `\\>`"); - } else { - let indent = list_indentation - lcount; - diag.help(format!( - "if this is intended to be part of the list, indent {indent} spaces" - )); - } - return; - } if ccount == 0 && blockquote_level == 0 { // simpler suggestion style for indentation let indent = list_indentation - lcount; diff --git a/src/tools/clippy/clippy_lints/src/doc/link_with_quotes.rs b/src/tools/clippy/clippy_lints/src/doc/link_with_quotes.rs index 01191e811b0..1d4345e4541 100644 --- a/src/tools/clippy/clippy_lints/src/doc/link_with_quotes.rs +++ b/src/tools/clippy/clippy_lints/src/doc/link_with_quotes.rs @@ -3,7 +3,7 @@ use std::ops::Range; use clippy_utils::diagnostics::span_lint; use rustc_lint::LateContext; -use super::{Fragments, DOC_LINK_WITH_QUOTES}; +use super::{DOC_LINK_WITH_QUOTES, Fragments}; pub fn check(cx: &LateContext<'_>, trimmed_text: &str, range: Range<usize>, fragments: Fragments<'_>) { if ((trimmed_text.starts_with('\'') && trimmed_text.ends_with('\'')) diff --git a/src/tools/clippy/clippy_lints/src/doc/missing_headers.rs b/src/tools/clippy/clippy_lints/src/doc/missing_headers.rs index e3d74840726..c9173030a55 100644 --- a/src/tools/clippy/clippy_lints/src/doc/missing_headers.rs +++ b/src/tools/clippy/clippy_lints/src/doc/missing_headers.rs @@ -5,7 +5,7 @@ use clippy_utils::{is_doc_hidden, return_ty}; use rustc_hir::{BodyId, FnSig, OwnerId, Safety}; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; pub fn check( cx: &LateContext<'_>, diff --git a/src/tools/clippy/clippy_lints/src/doc/mod.rs b/src/tools/clippy/clippy_lints/src/doc/mod.rs index 790579b21c9..e090644ae44 100644 --- a/src/tools/clippy/clippy_lints/src/doc/mod.rs +++ b/src/tools/clippy/clippy_lints/src/doc/mod.rs @@ -23,15 +23,16 @@ use rustc_middle::hir::nested_filter; use rustc_middle::lint::in_external_macro; use rustc_middle::ty; use rustc_resolve::rustdoc::{ - add_doc_fragment, attrs_to_doc_fragments, main_body_opts, source_span_for_markdown_range, span_of_fragments, - DocFragment, + DocFragment, add_doc_fragment, attrs_to_doc_fragments, main_body_opts, source_span_for_markdown_range, + span_of_fragments, }; use rustc_session::impl_lint_pass; use rustc_span::edition::Edition; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::ops::Range; use url::Url; +mod empty_line_after; mod link_with_quotes; mod markdown; mod missing_headers; @@ -449,13 +450,88 @@ declare_clippy_lint! { /// /// and probably spanning a many rows. /// struct Foo {} /// ``` - #[clippy::version = "1.81.0"] + #[clippy::version = "1.82.0"] pub TOO_LONG_FIRST_DOC_PARAGRAPH, style, "ensure that the first line of a documentation paragraph isn't too long" } -#[derive(Clone)] +declare_clippy_lint! { + /// ### What it does + /// Checks for empty lines after outer attributes + /// + /// ### Why is this bad? + /// The attribute may have meant to be an inner attribute (`#![attr]`). If + /// it was meant to be an outer attribute (`#[attr]`) then the empty line + /// should be removed + /// + /// ### Example + /// ```no_run + /// #[allow(dead_code)] + /// + /// fn not_quite_good_code() {} + /// ``` + /// + /// Use instead: + /// ```no_run + /// // Good (as inner attribute) + /// #![allow(dead_code)] + /// + /// fn this_is_fine() {} + /// + /// // or + /// + /// // Good (as outer attribute) + /// #[allow(dead_code)] + /// fn this_is_fine_too() {} + /// ``` + #[clippy::version = "pre 1.29.0"] + pub EMPTY_LINE_AFTER_OUTER_ATTR, + suspicious, + "empty line after outer attribute" +} + +declare_clippy_lint! { + /// ### What it does + /// Checks for empty lines after doc comments. + /// + /// ### Why is this bad? + /// The doc comment may have meant to be an inner doc comment, regular + /// comment or applied to some old code that is now commented out. If it was + /// intended to be a doc comment, then the empty line should be removed. + /// + /// ### Example + /// ```no_run + /// /// Some doc comment with a blank line after it. + /// + /// fn f() {} + /// + /// /// Docs for `old_code` + /// // fn old_code() {} + /// + /// fn new_code() {} + /// ``` + /// + /// Use instead: + /// ```no_run + /// //! Convert it to an inner doc comment + /// + /// // Or a regular comment + /// + /// /// Or remove the empty line + /// fn f() {} + /// + /// // /// Docs for `old_code` + /// // fn old_code() {} + /// + /// fn new_code() {} + /// ``` + #[clippy::version = "1.70.0"] + pub EMPTY_LINE_AFTER_DOC_COMMENTS, + suspicious, + "empty line after doc comments" +} + pub struct Documentation { valid_idents: FxHashSet<String>, check_private_items: bool, @@ -482,6 +558,8 @@ impl_lint_pass!(Documentation => [ SUSPICIOUS_DOC_COMMENTS, EMPTY_DOCS, DOC_LAZY_CONTINUATION, + EMPTY_LINE_AFTER_OUTER_ATTR, + EMPTY_LINE_AFTER_DOC_COMMENTS, TOO_LONG_FIRST_DOC_PARAGRAPH, ]); @@ -612,12 +690,10 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet<String>, attrs: &[ Some(("fake".into(), "fake".into())) } - if is_doc_hidden(attrs) { + if suspicious_doc_comments::check(cx, attrs) || empty_line_after::check(cx, attrs) || is_doc_hidden(attrs) { return None; } - suspicious_doc_comments::check(cx, attrs); - let (fragments, _) = attrs_to_doc_fragments( attrs.iter().filter_map(|attr| { if in_external_macro(cx.sess(), attr.span) { @@ -816,7 +892,6 @@ fn check_doc<'a, Events: Iterator<Item = (pulldown_cmark::Event<'a>, Range<usize range.end..next_range.start, Span::new(span.hi(), next_span.lo(), span.ctxt(), span.parent()), &containers[..], - span, ); } }, @@ -895,7 +970,7 @@ impl<'a, 'tcx> FindPanicUnwrap<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for FindPanicUnwrap<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for FindPanicUnwrap<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { diff --git a/src/tools/clippy/clippy_lints/src/doc/needless_doctest_main.rs b/src/tools/clippy/clippy_lints/src/doc/needless_doctest_main.rs index c3e3c0431e6..9ba2723157a 100644 --- a/src/tools/clippy/clippy_lints/src/doc/needless_doctest_main.rs +++ b/src/tools/clippy/clippy_lints/src/doc/needless_doctest_main.rs @@ -13,7 +13,7 @@ use rustc_parse::parser::ForceCollect; use rustc_session::parse::ParseSess; use rustc_span::edition::Edition; use rustc_span::source_map::{FilePathMapping, SourceMap}; -use rustc_span::{sym, FileName, Pos}; +use rustc_span::{FileName, Pos, sym}; use super::Fragments; diff --git a/src/tools/clippy/clippy_lints/src/doc/suspicious_doc_comments.rs b/src/tools/clippy/clippy_lints/src/doc/suspicious_doc_comments.rs index d7ad30efec3..f6f942b10ca 100644 --- a/src/tools/clippy/clippy_lints/src/doc/suspicious_doc_comments.rs +++ b/src/tools/clippy/clippy_lints/src/doc/suspicious_doc_comments.rs @@ -7,7 +7,7 @@ use rustc_span::Span; use super::SUSPICIOUS_DOC_COMMENTS; -pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) { +pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) -> bool { let replacements: Vec<_> = collect_doc_replacements(attrs); if let Some((&(lo_span, _), &(hi_span, _))) = replacements.first().zip(replacements.last()) { @@ -24,6 +24,10 @@ pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) { ); }, ); + + true + } else { + false } } diff --git a/src/tools/clippy/clippy_lints/src/doc/too_long_first_doc_paragraph.rs b/src/tools/clippy/clippy_lints/src/doc/too_long_first_doc_paragraph.rs index 7bb3bb12f2c..0165d24c7df 100644 --- a/src/tools/clippy/clippy_lints/src/doc/too_long_first_doc_paragraph.rs +++ b/src/tools/clippy/clippy_lints/src/doc/too_long_first_doc_paragraph.rs @@ -79,10 +79,17 @@ pub(super) fn check( && let new_span = first_span.with_hi(second_span.lo()).with_lo(first_span.hi()) && let Some(snippet) = snippet_opt(cx, new_span) { + let Some(first) = snippet_opt(cx, first_span) else { + return; + }; + let Some(comment_form) = first.get(..3) else { + return; + }; + diag.span_suggestion( new_span, "add an empty line", - format!("{snippet}///\n"), + format!("{snippet}{comment_form}{snippet}"), Applicability::MachineApplicable, ); } diff --git a/src/tools/clippy/clippy_lints/src/empty_enum.rs b/src/tools/clippy/clippy_lints/src/empty_enum.rs index f4c55738cb8..70eb81fa09c 100644 --- a/src/tools/clippy/clippy_lints/src/empty_enum.rs +++ b/src/tools/clippy/clippy_lints/src/empty_enum.rs @@ -60,7 +60,7 @@ declare_clippy_lint! { declare_lint_pass!(EmptyEnum => [EMPTY_ENUM]); -impl<'tcx> LateLintPass<'tcx> for EmptyEnum { +impl LateLintPass<'_> for EmptyEnum { fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) { if let ItemKind::Enum(..) = item.kind // Only suggest the `never_type` if the feature is enabled diff --git a/src/tools/clippy/clippy_lints/src/entry.rs b/src/tools/clippy/clippy_lints/src/entry.rs index 9c5100a8c1a..70524e458c7 100644 --- a/src/tools/clippy/clippy_lints/src/entry.rs +++ b/src/tools/clippy/clippy_lints/src/entry.rs @@ -1,17 +1,17 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{reindent_multiline, snippet_indent, snippet_with_applicability, snippet_with_context}; use clippy_utils::{ - can_move_expr_to_closure_no_visit, higher, is_expr_final_block_expr, is_expr_used_or_unified, - peel_hir_expr_while, SpanlessEq, + SpanlessEq, can_move_expr_to_closure_no_visit, higher, is_expr_final_block_expr, is_expr_used_or_unified, + peel_hir_expr_while, }; use core::fmt::{self, Write}; use rustc_errors::Applicability; use rustc_hir::hir_id::HirIdSet; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Block, Expr, ExprKind, HirId, Pat, Stmt, StmtKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span, SyntaxContext, DUMMY_SP}; +use rustc_span::{DUMMY_SP, Span, SyntaxContext, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/enum_clike.rs b/src/tools/clippy/clippy_lints/src/enum_clike.rs index 4755cefe784..e9e9d00907e 100644 --- a/src/tools/clippy/clippy_lints/src/enum_clike.rs +++ b/src/tools/clippy/clippy_lints/src/enum_clike.rs @@ -1,4 +1,4 @@ -use clippy_utils::consts::{mir_to_const, Constant}; +use clippy_utils::consts::{Constant, mir_to_const}; use clippy_utils::diagnostics::span_lint; use rustc_hir::{Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/escape.rs b/src/tools/clippy/clippy_lints/src/escape.rs index 80360697941..a89f0d9c432 100644 --- a/src/tools/clippy/clippy_lints/src/escape.rs +++ b/src/tools/clippy/clippy_lints/src/escape.rs @@ -1,15 +1,15 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_hir; -use rustc_hir::{intravisit, AssocItemKind, Body, FnDecl, HirId, HirIdSet, Impl, ItemKind, Node, Pat, PatKind}; +use rustc_hir::{AssocItemKind, Body, FnDecl, HirId, HirIdSet, Impl, ItemKind, Node, Pat, PatKind, intravisit}; use rustc_hir_typeck::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::mir::FakeReadCause; use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::{self, TraitRef, Ty, TyCtxt}; use rustc_session::impl_lint_pass; +use rustc_span::Span; use rustc_span::def_id::LocalDefId; use rustc_span::symbol::kw; -use rustc_span::Span; use rustc_target::spec::abi::Abi; pub struct BoxedLocal { @@ -141,7 +141,7 @@ fn is_argument(tcx: TyCtxt<'_>, id: HirId) -> bool { matches!(tcx.parent_hir_node(id), Node::Param(_)) } -impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> { +impl<'tcx> Delegate<'tcx> for EscapeDelegate<'_, 'tcx> { fn consume(&mut self, cmt: &PlaceWithHirId<'tcx>, _: HirId) { if cmt.place.projections.is_empty() { if let PlaceBase::Local(lid) = cmt.place.base { @@ -188,7 +188,7 @@ impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> { fn fake_read(&mut self, _: &PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId) {} } -impl<'a, 'tcx> EscapeDelegate<'a, 'tcx> { +impl<'tcx> EscapeDelegate<'_, 'tcx> { fn is_large_box(&self, ty: Ty<'tcx>) -> bool { // Large types need to be boxed to avoid stack overflows. if let Some(boxed_ty) = ty.boxed_ty() { diff --git a/src/tools/clippy/clippy_lints/src/excessive_bools.rs b/src/tools/clippy/clippy_lints/src/excessive_bools.rs index 8f469efb1b5..c88fb50b5af 100644 --- a/src/tools/clippy/clippy_lints/src/excessive_bools.rs +++ b/src/tools/clippy/clippy_lints/src/excessive_bools.rs @@ -5,8 +5,8 @@ use rustc_hir::intravisit::FnKind; use rustc_hir::{Body, FnDecl, Item, ItemKind, TraitFn, TraitItem, TraitItemKind, Ty}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; use rustc_target::spec::abi::Abi; declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/excessive_nesting.rs b/src/tools/clippy/clippy_lints/src/excessive_nesting.rs index 5154edd4399..ffc76366983 100644 --- a/src/tools/clippy/clippy_lints/src/excessive_nesting.rs +++ b/src/tools/clippy/clippy_lints/src/excessive_nesting.rs @@ -2,7 +2,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::source::snippet; use rustc_ast::node_id::NodeSet; -use rustc_ast::visit::{walk_block, walk_item, Visitor}; +use rustc_ast::visit::{Visitor, walk_block, walk_item}; use rustc_ast::{Block, Crate, Inline, Item, ItemKind, ModKind, NodeId}; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; use rustc_middle::lint::in_external_macro; @@ -135,7 +135,7 @@ impl NestingVisitor<'_, '_> { } } -impl<'conf, 'cx> Visitor<'_> for NestingVisitor<'conf, 'cx> { +impl Visitor<'_> for NestingVisitor<'_, '_> { fn visit_block(&mut self, block: &Block) { if block.span.from_expansion() { return; diff --git a/src/tools/clippy/clippy_lints/src/explicit_write.rs b/src/tools/clippy/clippy_lints/src/explicit_write.rs index 3c4a043a732..5b423a96918 100644 --- a/src/tools/clippy/clippy_lints/src/explicit_write.rs +++ b/src/tools/clippy/clippy_lints/src/explicit_write.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::macros::{format_args_inputs_span, FormatArgsStorage}; +use clippy_utils::macros::{FormatArgsStorage, format_args_inputs_span}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::{is_expn_of, path_def_id}; use rustc_errors::Applicability; @@ -7,7 +7,7 @@ use rustc_hir::def::Res; use rustc_hir::{BindingMode, Block, BlockCheckMode, Expr, ExprKind, Node, PatKind, QPath, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, ExpnId}; +use rustc_span::{ExpnId, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/extra_unused_type_parameters.rs b/src/tools/clippy/clippy_lints/src/extra_unused_type_parameters.rs index bfe4e253ae4..6ad879b9fe7 100644 --- a/src/tools/clippy/clippy_lints/src/extra_unused_type_parameters.rs +++ b/src/tools/clippy/clippy_lints/src/extra_unused_type_parameters.rs @@ -3,17 +3,17 @@ use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_then}; use clippy_utils::{is_from_proc_macro, trait_ref_of_method}; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_impl_item, walk_item, walk_param_bound, walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_impl_item, walk_item, walk_param_bound, walk_ty}; use rustc_hir::{ BodyId, ExprKind, GenericBound, GenericParam, GenericParamKind, Generics, ImplItem, ImplItemKind, Item, ItemKind, - PredicateOrigin, Ty, TyKind, WherePredicate, + PredicateOrigin, Ty, WherePredicate, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::hir::nested_filter; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; -use rustc_span::def_id::{DefId, LocalDefId}; use rustc_span::Span; +use rustc_span::def_id::{DefId, LocalDefId}; declare_clippy_lint! { /// ### What it does @@ -193,18 +193,12 @@ fn bound_to_trait_def_id(bound: &GenericBound<'_>) -> Option<LocalDefId> { bound.trait_ref()?.trait_def_id()?.as_local() } -impl<'cx, 'tcx> Visitor<'tcx> for TypeWalker<'cx, 'tcx> { +impl<'tcx> Visitor<'tcx> for TypeWalker<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_ty(&mut self, t: &'tcx Ty<'tcx>) { if let Some((def_id, _)) = t.peel_refs().as_generic_param() { self.ty_params.remove(&def_id); - } else if let TyKind::OpaqueDef(id, _, _) = t.kind { - // Explicitly walk OpaqueDef. Normally `walk_ty` would do the job, but it calls - // `visit_nested_item`, which checks that `Self::NestedFilter::INTER` is set. We're - // using `OnlyBodies`, so the check ends up failing and the type isn't fully walked. - let item = self.nested_visit_map().item(id); - walk_item(self, item); } else { walk_ty(self, t); } diff --git a/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs b/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs index 0446943321a..f822432cce6 100644 --- a/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs +++ b/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs @@ -6,7 +6,7 @@ use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -73,7 +73,7 @@ fn lint_impl_body(cx: &LateContext<'_>, impl_span: Span, impl_items: &[hir::Impl result: Vec<Span>, } - impl<'a, 'tcx> Visitor<'tcx> for FindPanicUnwrap<'a, 'tcx> { + impl<'tcx> Visitor<'tcx> for FindPanicUnwrap<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { if let Some(macro_call) = root_macro_call_first_node(self.lcx, expr) { if is_panic(self.lcx, macro_call.def_id) { diff --git a/src/tools/clippy/clippy_lints/src/field_scoped_visibility_modifiers.rs b/src/tools/clippy/clippy_lints/src/field_scoped_visibility_modifiers.rs index 95b8e882da7..ba2b37fbf11 100644 --- a/src/tools/clippy/clippy_lints/src/field_scoped_visibility_modifiers.rs +++ b/src/tools/clippy/clippy_lints/src/field_scoped_visibility_modifiers.rs @@ -41,7 +41,7 @@ declare_clippy_lint! { /// } /// } /// ``` - #[clippy::version = "1.78.0"] + #[clippy::version = "1.81.0"] pub FIELD_SCOPED_VISIBILITY_MODIFIERS, restriction, "checks for usage of a scoped visibility modifier, like `pub(crate)`, on fields" diff --git a/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs b/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs index bf4bcabfe89..8da6623f34d 100644 --- a/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs +++ b/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs @@ -1,4 +1,4 @@ -use clippy_utils::consts::Constant::{Int, F32, F64}; +use clippy_utils::consts::Constant::{F32, F64, Int}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::{ diff --git a/src/tools/clippy/clippy_lints/src/format.rs b/src/tools/clippy/clippy_lints/src/format.rs index 4dedff69b9a..5e3f6b6a137 100644 --- a/src/tools/clippy/clippy_lints/src/format.rs +++ b/src/tools/clippy/clippy_lints/src/format.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::macros::{find_format_arg_expr, root_macro_call_first_node, FormatArgsStorage}; -use clippy_utils::source::{snippet_with_context, SpanRangeExt}; +use clippy_utils::macros::{FormatArgsStorage, find_format_arg_expr, root_macro_call_first_node}; +use clippy_utils::source::{SpanRangeExt, snippet_with_context}; use clippy_utils::sugg::Sugg; use rustc_ast::{FormatArgsPiece, FormatOptions, FormatTrait}; use rustc_errors::Applicability; @@ -8,7 +8,7 @@ use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/format_args.rs b/src/tools/clippy/clippy_lints/src/format_args.rs index 020c0c5440d..4c043f8dc14 100644 --- a/src/tools/clippy/clippy_lints/src/format_args.rs +++ b/src/tools/clippy/clippy_lints/src/format_args.rs @@ -1,11 +1,12 @@ use arrayvec::ArrayVec; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::is_diag_trait_item; use clippy_utils::macros::{ - find_format_arg_expr, format_arg_removal_span, format_placeholder_format_span, is_assert_macro, is_format_macro, - is_panic, matching_root_macro_call, root_macro_call_first_node, FormatArgsStorage, FormatParamUsage, MacroCall, + FormatArgsStorage, FormatParamUsage, MacroCall, find_format_arg_expr, format_arg_removal_span, + format_placeholder_format_span, is_assert_macro, is_format_macro, is_panic, matching_root_macro_call, + root_macro_call_first_node, }; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::{implements_trait, is_type_lang_item}; @@ -18,11 +19,11 @@ use rustc_errors::Applicability; use rustc_errors::SuggestionStyle::{CompletelyHidden, ShowCode}; use rustc_hir::{Expr, ExprKind, LangItem}; use rustc_lint::{LateContext, LateLintPass, LintContext}; -use rustc_middle::ty::adjustment::{Adjust, Adjustment}; use rustc_middle::ty::Ty; +use rustc_middle::ty::adjustment::{Adjust, Adjustment}; use rustc_session::impl_lint_pass; use rustc_span::edition::Edition::Edition2021; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; declare_clippy_lint! { /// ### What it does @@ -218,7 +219,7 @@ struct FormatArgsExpr<'a, 'tcx> { ignore_mixed: bool, } -impl<'a, 'tcx> FormatArgsExpr<'a, 'tcx> { +impl FormatArgsExpr<'_, '_> { fn check_templates(&self) { for piece in &self.format_args.template { if let FormatArgsPiece::Placeholder(placeholder) = piece diff --git a/src/tools/clippy/clippy_lints/src/format_impl.rs b/src/tools/clippy/clippy_lints/src/format_impl.rs index 7cd12ac7db8..7c0515b8c56 100644 --- a/src/tools/clippy/clippy_lints/src/format_impl.rs +++ b/src/tools/clippy/clippy_lints/src/format_impl.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; -use clippy_utils::macros::{find_format_arg_expr, is_format_macro, root_macro_call_first_node, FormatArgsStorage}; +use clippy_utils::macros::{FormatArgsStorage, find_format_arg_expr, is_format_macro, root_macro_call_first_node}; use clippy_utils::{get_parent_as_impl, is_diag_trait_item, path_to_local, peel_ref_operators}; use rustc_ast::{FormatArgsPiece, FormatTrait}; use rustc_errors::Applicability; @@ -7,7 +7,7 @@ use rustc_hir::{Expr, ExprKind, Impl, ImplItem, ImplItemKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; use rustc_span::symbol::kw; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; declare_clippy_lint! { /// ### What it does @@ -148,7 +148,7 @@ struct FormatImplExpr<'a, 'tcx> { format_trait_impl: FormatTraitNames, } -impl<'a, 'tcx> FormatImplExpr<'a, 'tcx> { +impl FormatImplExpr<'_, '_> { fn check_to_string_in_display(&self) { if self.format_trait_impl.name == sym::Display && let ExprKind::MethodCall(path, self_arg, ..) = self.expr.kind diff --git a/src/tools/clippy/clippy_lints/src/format_push_string.rs b/src/tools/clippy/clippy_lints/src/format_push_string.rs index c6f03c3a7cf..8b1f86cbb91 100644 --- a/src/tools/clippy/clippy_lints/src/format_push_string.rs +++ b/src/tools/clippy/clippy_lints/src/format_push_string.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::ty::is_type_lang_item; use clippy_utils::higher; +use clippy_utils::ty::is_type_lang_item; use rustc_hir::{BinOpKind, Expr, ExprKind, LangItem, MatchSource}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/from_over_into.rs b/src/tools/clippy/clippy_lints/src/from_over_into.rs index b84bf7c821c..d5a2e06863d 100644 --- a/src/tools/clippy/clippy_lints/src/from_over_into.rs +++ b/src/tools/clippy/clippy_lints/src/from_over_into.rs @@ -1,11 +1,11 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::span_is_local; use clippy_utils::path_def_id; use clippy_utils::source::SpanRangeExt; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_path, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_path}; use rustc_hir::{ FnRetTy, GenericArg, GenericArgs, HirId, Impl, ImplItemKind, ImplItemRef, Item, ItemKind, PatKind, Path, PathSegment, Ty, TyKind, @@ -126,7 +126,7 @@ struct SelfFinder<'a, 'tcx> { invalid: bool, } -impl<'a, 'tcx> Visitor<'tcx> for SelfFinder<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for SelfFinder<'_, 'tcx> { type NestedFilter = OnlyBodies; fn nested_visit_map(&mut self) -> Self::Map { diff --git a/src/tools/clippy/clippy_lints/src/from_str_radix_10.rs b/src/tools/clippy/clippy_lints/src/from_str_radix_10.rs index e5fa67d6964..7361546153c 100644 --- a/src/tools/clippy/clippy_lints/src/from_str_radix_10.rs +++ b/src/tools/clippy/clippy_lints/src/from_str_radix_10.rs @@ -3,7 +3,7 @@ use clippy_utils::sugg::Sugg; use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item}; use clippy_utils::{is_in_const_context, is_integer_literal}; use rustc_errors::Applicability; -use rustc_hir::{def, Expr, ExprKind, LangItem, PrimTy, QPath, TyKind}; +use rustc_hir::{Expr, ExprKind, LangItem, PrimTy, QPath, TyKind, def}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::Ty; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/functions/mod.rs b/src/tools/clippy/clippy_lints/src/functions/mod.rs index 0f48941783b..91d73c2a9c9 100644 --- a/src/tools/clippy/clippy_lints/src/functions/mod.rs +++ b/src/tools/clippy/clippy_lints/src/functions/mod.rs @@ -2,6 +2,7 @@ mod impl_trait_in_params; mod misnamed_getters; mod must_use; mod not_unsafe_ptr_arg_deref; +mod ref_option; mod renamed_function_params; mod result; mod too_many_arguments; @@ -14,8 +15,8 @@ use rustc_hir::intravisit; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::TyCtxt; use rustc_session::impl_lint_pass; -use rustc_span::def_id::{DefIdSet, LocalDefId}; use rustc_span::Span; +use rustc_span::def_id::{DefIdSet, LocalDefId}; declare_clippy_lint! { /// ### What it does @@ -399,6 +400,53 @@ declare_clippy_lint! { "renamed function parameters in trait implementation" } +declare_clippy_lint! { + /// ### What it does + /// Warns when a function signature uses `&Option<T>` instead of `Option<&T>`. + /// + /// ### Why is this bad? + /// More flexibility, better memory optimization, and more idiomatic Rust code. + /// + /// `&Option<T>` in a function signature breaks encapsulation because the caller must own T + /// and move it into an Option to call with it. When returned, the owner must internally store + /// it as `Option<T>` in order to return it. + /// At a lower level, `&Option<T>` points to memory with the `presence` bit flag plus the `T` value, + /// whereas `Option<&T>` is usually [optimized](https://doc.rust-lang.org/1.81.0/std/option/index.html#representation) + /// to a single pointer, so it may be more optimal. + /// + /// See this [YouTube video](https://www.youtube.com/watch?v=6c7pZYP_iIE) by + /// Logan Smith for an in-depth explanation of why this is important. + /// + /// ### Known problems + /// This lint recommends changing the function signatures, but it cannot + /// automatically change the function calls or the function implementations. + /// + /// ### Example + /// ```no_run + /// // caller uses foo(&opt) + /// fn foo(a: &Option<String>) {} + /// # struct Unit {} + /// # impl Unit { + /// fn bar(&self) -> &Option<String> { &None } + /// # } + /// ``` + /// Use instead: + /// ```no_run + /// // caller should use `foo1(opt.as_ref())` + /// fn foo1(a: Option<&String>) {} + /// // better yet, use string slice `foo2(opt.as_deref())` + /// fn foo2(a: Option<&str>) {} + /// # struct Unit {} + /// # impl Unit { + /// fn bar(&self) -> Option<&String> { None } + /// # } + /// ``` + #[clippy::version = "1.82.0"] + pub REF_OPTION, + pedantic, + "function signature uses `&Option<T>` instead of `Option<&T>`" +} + pub struct Functions { too_many_arguments_threshold: u64, too_many_lines_threshold: u64, @@ -437,6 +485,7 @@ impl_lint_pass!(Functions => [ MISNAMED_GETTERS, IMPL_TRAIT_IN_PARAMS, RENAMED_FUNCTION_PARAMS, + REF_OPTION, ]); impl<'tcx> LateLintPass<'tcx> for Functions { @@ -455,6 +504,16 @@ impl<'tcx> LateLintPass<'tcx> for Functions { not_unsafe_ptr_arg_deref::check_fn(cx, kind, decl, body, def_id); misnamed_getters::check_fn(cx, kind, decl, body, span); impl_trait_in_params::check_fn(cx, &kind, body, hir_id); + ref_option::check_fn( + cx, + kind, + decl, + span, + hir_id, + def_id, + body, + self.avoid_breaking_exported_api, + ); } fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'_>) { @@ -475,5 +534,6 @@ impl<'tcx> LateLintPass<'tcx> for Functions { must_use::check_trait_item(cx, item); result::check_trait_item(cx, item, self.large_error_threshold); impl_trait_in_params::check_trait_item(cx, item, self.avoid_breaking_exported_api); + ref_option::check_trait_item(cx, item, self.avoid_breaking_exported_api); } } diff --git a/src/tools/clippy/clippy_lints/src/functions/must_use.rs b/src/tools/clippy/clippy_lints/src/functions/must_use.rs index 93828121047..cfd11e9339f 100644 --- a/src/tools/clippy/clippy_lints/src/functions/must_use.rs +++ b/src/tools/clippy/clippy_lints/src/functions/must_use.rs @@ -8,7 +8,7 @@ use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty::{self, Ty}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use clippy_utils::attrs::is_proc_macro; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_then}; diff --git a/src/tools/clippy/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs b/src/tools/clippy/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs index 1aeefe73cf6..c2b40ae01d4 100644 --- a/src/tools/clippy/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs +++ b/src/tools/clippy/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs @@ -1,4 +1,4 @@ -use rustc_hir::{self as hir, intravisit, HirId, HirIdSet}; +use rustc_hir::{self as hir, HirId, HirIdSet, intravisit}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_span::def_id::LocalDefId; diff --git a/src/tools/clippy/clippy_lints/src/functions/ref_option.rs b/src/tools/clippy/clippy_lints/src/functions/ref_option.rs new file mode 100644 index 00000000000..373ecd74cb3 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/functions/ref_option.rs @@ -0,0 +1,122 @@ +use crate::functions::REF_OPTION; +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::is_trait_impl_item; +use clippy_utils::source::snippet; +use clippy_utils::ty::is_type_diagnostic_item; +use rustc_errors::Applicability; +use rustc_hir as hir; +use rustc_hir::intravisit::FnKind; +use rustc_hir::{FnDecl, HirId}; +use rustc_lint::LateContext; +use rustc_middle::ty::{self, GenericArgKind, Mutability, Ty}; +use rustc_span::def_id::LocalDefId; +use rustc_span::{Span, sym}; + +fn check_ty<'a>(cx: &LateContext<'a>, param: &rustc_hir::Ty<'a>, param_ty: Ty<'a>, fixes: &mut Vec<(Span, String)>) { + if let ty::Ref(_, opt_ty, Mutability::Not) = param_ty.kind() + && is_type_diagnostic_item(cx, *opt_ty, sym::Option) + && let ty::Adt(_, opt_gen) = opt_ty.kind() + && let [gen] = opt_gen.as_slice() + && let GenericArgKind::Type(gen_ty) = gen.unpack() + && !gen_ty.is_ref() + // Need to gen the original spans, so first parsing mid, and hir parsing afterward + && let hir::TyKind::Ref(lifetime, hir::MutTy { ty, .. }) = param.kind + && let hir::TyKind::Path(hir::QPath::Resolved(_, path)) = ty.kind + && let (Some(first), Some(last)) = (path.segments.first(), path.segments.last()) + && let Some(hir::GenericArgs { + args: [hir::GenericArg::Type(opt_ty)], + .. + }) = last.args + { + let lifetime = snippet(cx, lifetime.ident.span, ".."); + fixes.push(( + param.span, + format!( + "{}<&{lifetime}{}{}>", + snippet(cx, first.ident.span.to(last.ident.span), ".."), + if lifetime.is_empty() { "" } else { " " }, + snippet(cx, opt_ty.span, "..") + ), + )); + } +} + +fn check_fn_sig<'a>(cx: &LateContext<'a>, decl: &FnDecl<'a>, span: Span, sig: ty::FnSig<'a>) { + let mut fixes = Vec::new(); + // Check function arguments' types + for (param, param_ty) in decl.inputs.iter().zip(sig.inputs()) { + check_ty(cx, param, *param_ty, &mut fixes); + } + // Check return type + if let hir::FnRetTy::Return(ty) = &decl.output { + check_ty(cx, ty, sig.output(), &mut fixes); + } + if !fixes.is_empty() { + span_lint_and_then( + cx, + REF_OPTION, + span, + "it is more idiomatic to use `Option<&T>` instead of `&Option<T>`", + |diag| { + diag.multipart_suggestion("change this to", fixes, Applicability::Unspecified); + }, + ); + } +} + +#[allow(clippy::too_many_arguments)] +pub(crate) fn check_fn<'a>( + cx: &LateContext<'a>, + kind: FnKind<'_>, + decl: &FnDecl<'a>, + span: Span, + hir_id: HirId, + def_id: LocalDefId, + body: &hir::Body<'_>, + avoid_breaking_exported_api: bool, +) { + if avoid_breaking_exported_api && cx.effective_visibilities.is_exported(def_id) { + return; + } + + if let FnKind::Closure = kind { + // Compute the span of the closure parameters + return type if set + let span = if let hir::FnRetTy::Return(out_ty) = &decl.output { + if decl.inputs.is_empty() { + out_ty.span + } else { + span.with_hi(out_ty.span.hi()) + } + } else if let (Some(first), Some(last)) = (decl.inputs.first(), decl.inputs.last()) { + first.span.to(last.span) + } else { + // No parameters - no point in checking + return; + }; + + // Figure out the signature of the closure + let ty::Closure(_, args) = cx.typeck_results().expr_ty(body.value).kind() else { + return; + }; + let sig = args.as_closure().sig().skip_binder(); + + check_fn_sig(cx, decl, span, sig); + } else if !is_trait_impl_item(cx, hir_id) { + let sig = cx.tcx.fn_sig(def_id).instantiate_identity().skip_binder(); + check_fn_sig(cx, decl, span, sig); + } +} + +pub(super) fn check_trait_item<'a>( + cx: &LateContext<'a>, + trait_item: &hir::TraitItem<'a>, + avoid_breaking_exported_api: bool, +) { + if let hir::TraitItemKind::Fn(ref sig, _) = trait_item.kind + && !(avoid_breaking_exported_api && cx.effective_visibilities.is_exported(trait_item.owner_id.def_id)) + { + let def_id = trait_item.owner_id.def_id; + let ty_sig = cx.tcx.fn_sig(def_id).instantiate_identity().skip_binder(); + check_fn_sig(cx, sig.decl, sig.span, ty_sig); + } +} diff --git a/src/tools/clippy/clippy_lints/src/functions/renamed_function_params.rs b/src/tools/clippy/clippy_lints/src/functions/renamed_function_params.rs index c7de0385c02..ac2e866e4ff 100644 --- a/src/tools/clippy/clippy_lints/src/functions/renamed_function_params.rs +++ b/src/tools/clippy/clippy_lints/src/functions/renamed_function_params.rs @@ -4,8 +4,8 @@ use rustc_hir::def_id::{DefId, DefIdSet}; use rustc_hir::hir_id::OwnerId; use rustc_hir::{Impl, ImplItem, ImplItemKind, ImplItemRef, ItemKind, Node, TraitRef}; use rustc_lint::LateContext; -use rustc_span::symbol::{kw, Ident, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{Ident, Symbol, kw}; use super::RENAMED_FUNCTION_PARAMS; diff --git a/src/tools/clippy/clippy_lints/src/functions/result.rs b/src/tools/clippy/clippy_lints/src/functions/result.rs index c3a0b40a677..d4eaa166320 100644 --- a/src/tools/clippy/clippy_lints/src/functions/result.rs +++ b/src/tools/clippy/clippy_lints/src/functions/result.rs @@ -3,11 +3,11 @@ use rustc_hir as hir; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty::{self, Ty}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_then}; use clippy_utils::trait_ref_of_method; -use clippy_utils::ty::{approx_ty_size, is_type_diagnostic_item, AdtVariantInfo}; +use clippy_utils::ty::{AdtVariantInfo, approx_ty_size, is_type_diagnostic_item}; use super::{RESULT_LARGE_ERR, RESULT_UNIT_ERR}; diff --git a/src/tools/clippy/clippy_lints/src/future_not_send.rs b/src/tools/clippy/clippy_lints/src/future_not_send.rs index 9488ba75686..a4dbe134f36 100644 --- a/src/tools/clippy/clippy_lints/src/future_not_send.rs +++ b/src/tools/clippy/clippy_lints/src/future_not_send.rs @@ -8,7 +8,7 @@ use rustc_middle::ty::print::PrintTraitRefExt; use rustc_middle::ty::{self, AliasTy, ClauseKind, PredicateKind}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use rustc_trait_selection::error_reporting::InferCtxtErrorExt; use rustc_trait_selection::traits::{self, FulfillmentError, ObligationCtxt}; diff --git a/src/tools/clippy/clippy_lints/src/if_then_some_else_none.rs b/src/tools/clippy/clippy_lints/src/if_then_some_else_none.rs index 0bca53c1536..d63c18c0eda 100644 --- a/src/tools/clippy/clippy_lints/src/if_then_some_else_none.rs +++ b/src/tools/clippy/clippy_lints/src/if_then_some_else_none.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::eager_or_lazy::switch_to_eager_eval; use clippy_utils::source::snippet_with_context; @@ -105,6 +105,8 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone { snippet_with_context(cx, first_stmt.span.until(then_arg.span), ctxt, "..", &mut app); let closure = if method_name == "then" { "|| " } else { "" }; format!("{closure} {{ {block_snippet}; {arg_snip} }}") + } else if method_name == "then" { + (std::borrow::Cow::Borrowed("|| ") + arg_snip).into_owned() } else { arg_snip.into_owned() }; diff --git a/src/tools/clippy/clippy_lints/src/implicit_hasher.rs b/src/tools/clippy/clippy_lints/src/implicit_hasher.rs index e56f33f8dcf..4c5375730b8 100644 --- a/src/tools/clippy/clippy_lints/src/implicit_hasher.rs +++ b/src/tools/clippy/clippy_lints/src/implicit_hasher.rs @@ -3,18 +3,18 @@ use std::collections::BTreeMap; use rustc_errors::{Applicability, Diag}; use rustc_hir as hir; -use rustc_hir::intravisit::{walk_body, walk_expr, walk_inf, walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_body, walk_expr, walk_inf, walk_ty}; use rustc_hir::{Body, Expr, ExprKind, GenericArg, Item, ItemKind, QPath, TyKind}; use rustc_hir_analysis::lower_ty; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{Ty, TypeckResults}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::{snippet, IntoSpan, SpanRangeExt}; +use clippy_utils::source::{IntoSpan, SpanRangeExt, snippet}; use clippy_utils::ty::is_type_diagnostic_item; declare_clippy_lint! { @@ -281,7 +281,7 @@ impl<'a, 'tcx> ImplicitHasherTypeVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for ImplicitHasherTypeVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for ImplicitHasherTypeVisitor<'_, 'tcx> { fn visit_ty(&mut self, t: &'tcx hir::Ty<'_>) { if let Some(target) = ImplicitHasherType::new(self.cx, t) { self.found.push(target); @@ -318,7 +318,7 @@ impl<'a, 'b, 'tcx> ImplicitHasherConstructorVisitor<'a, 'b, 'tcx> { } } -impl<'a, 'b, 'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'a, 'b, 'tcx> { +impl<'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'_, '_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_body(&mut self, body: &Body<'tcx>) { diff --git a/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs b/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs index 127c73ed637..f4a64f5c20b 100644 --- a/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs +++ b/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs @@ -1,11 +1,17 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::{higher, is_integer_literal, peel_blocks_with_stmt, SpanlessEq}; +use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; +use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::source::snippet_opt; +use clippy_utils::{ + SpanlessEq, higher, is_in_const_context, is_integer_literal, path_to_local, peel_blocks, peel_blocks_with_stmt, +}; use rustc_ast::ast::LitKind; use rustc_data_structures::packed::Pu128; use rustc_errors::Applicability; -use rustc_hir::{BinOpKind, Expr, ExprKind, QPath}; +use rustc_hir::{BinOp, BinOpKind, Expr, ExprKind, HirId, QPath}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::declare_lint_pass; +use rustc_session::impl_lint_pass; +use rustc_span::Span; declare_clippy_lint! { /// ### What it does @@ -39,7 +45,49 @@ declare_clippy_lint! { "Perform saturating subtraction instead of implicitly checking lower bound of data type" } -declare_lint_pass!(ImplicitSaturatingSub => [IMPLICIT_SATURATING_SUB]); +declare_clippy_lint! { + /// ### What it does + /// Checks for comparisons between integers, followed by subtracting the greater value from the + /// lower one. + /// + /// ### Why is this bad? + /// This could result in an underflow and is most likely not what the user wants. If this was + /// intended to be a saturated subtraction, consider using the `saturating_sub` method directly. + /// + /// ### Example + /// ```no_run + /// let a = 12u32; + /// let b = 13u32; + /// + /// let result = if a > b { b - a } else { 0 }; + /// ``` + /// + /// Use instead: + /// ```no_run + /// let a = 12u32; + /// let b = 13u32; + /// + /// let result = a.saturating_sub(b); + /// ``` + #[clippy::version = "1.44.0"] + pub INVERTED_SATURATING_SUB, + correctness, + "Check if a variable is smaller than another one and still subtract from it even if smaller" +} + +pub struct ImplicitSaturatingSub { + msrv: Msrv, +} + +impl_lint_pass!(ImplicitSaturatingSub => [IMPLICIT_SATURATING_SUB, INVERTED_SATURATING_SUB]); + +impl ImplicitSaturatingSub { + pub fn new(conf: &'static Conf) -> Self { + Self { + msrv: conf.msrv.clone(), + } + } +} impl<'tcx> LateLintPass<'tcx> for ImplicitSaturatingSub { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { @@ -50,73 +98,260 @@ impl<'tcx> LateLintPass<'tcx> for ImplicitSaturatingSub { // Check if the conditional expression is a binary operation && let ExprKind::Binary(ref cond_op, cond_left, cond_right) = cond.kind + { + check_with_condition(cx, expr, cond_op.node, cond_left, cond_right, then); + } else if let Some(higher::If { + cond, + then: if_block, + r#else: Some(else_block), + }) = higher::If::hir(expr) + && let ExprKind::Binary(ref cond_op, cond_left, cond_right) = cond.kind + { + check_manual_check( + cx, expr, cond_op, cond_left, cond_right, if_block, else_block, &self.msrv, + ); + } + } + + extract_msrv_attr!(LateContext); +} - // Ensure that the binary operator is >, !=, or < - && (BinOpKind::Ne == cond_op.node || BinOpKind::Gt == cond_op.node || BinOpKind::Lt == cond_op.node) +#[allow(clippy::too_many_arguments)] +fn check_manual_check<'tcx>( + cx: &LateContext<'tcx>, + expr: &Expr<'tcx>, + condition: &BinOp, + left_hand: &Expr<'tcx>, + right_hand: &Expr<'tcx>, + if_block: &Expr<'tcx>, + else_block: &Expr<'tcx>, + msrv: &Msrv, +) { + let ty = cx.typeck_results().expr_ty(left_hand); + if ty.is_numeric() && !ty.is_signed() { + match condition.node { + BinOpKind::Gt | BinOpKind::Ge => check_gt( + cx, + condition.span, + expr.span, + left_hand, + right_hand, + if_block, + else_block, + msrv, + ), + BinOpKind::Lt | BinOpKind::Le => check_gt( + cx, + condition.span, + expr.span, + right_hand, + left_hand, + if_block, + else_block, + msrv, + ), + _ => {}, + } + } +} - // Check if assign operation is done - && let Some(target) = subtracts_one(cx, then) +#[allow(clippy::too_many_arguments)] +fn check_gt( + cx: &LateContext<'_>, + condition_span: Span, + expr_span: Span, + big_var: &Expr<'_>, + little_var: &Expr<'_>, + if_block: &Expr<'_>, + else_block: &Expr<'_>, + msrv: &Msrv, +) { + if let Some(big_var) = Var::new(big_var) + && let Some(little_var) = Var::new(little_var) + { + check_subtraction( + cx, + condition_span, + expr_span, + big_var, + little_var, + if_block, + else_block, + msrv, + ); + } +} - // Extracting out the variable name - && let ExprKind::Path(QPath::Resolved(_, ares_path)) = target.kind +struct Var { + span: Span, + hir_id: HirId, +} + +impl Var { + fn new(expr: &Expr<'_>) -> Option<Self> { + path_to_local(expr).map(|hir_id| Self { + span: expr.span, + hir_id, + }) + } +} + +#[allow(clippy::too_many_arguments)] +fn check_subtraction( + cx: &LateContext<'_>, + condition_span: Span, + expr_span: Span, + big_var: Var, + little_var: Var, + if_block: &Expr<'_>, + else_block: &Expr<'_>, + msrv: &Msrv, +) { + let if_block = peel_blocks(if_block); + let else_block = peel_blocks(else_block); + if is_integer_literal(if_block, 0) { + // We need to check this case as well to prevent infinite recursion. + if is_integer_literal(else_block, 0) { + // Well, seems weird but who knows? + return; + } + // If the subtraction is done in the `else` block, then we need to also revert the two + // variables as it means that the check was reverted too. + check_subtraction( + cx, + condition_span, + expr_span, + little_var, + big_var, + else_block, + if_block, + msrv, + ); + return; + } + if is_integer_literal(else_block, 0) + && let ExprKind::Binary(op, left, right) = if_block.kind + && let BinOpKind::Sub = op.node + { + let local_left = path_to_local(left); + let local_right = path_to_local(right); + if Some(big_var.hir_id) == local_left && Some(little_var.hir_id) == local_right { + // This part of the condition is voluntarily split from the one before to ensure that + // if `snippet_opt` fails, it won't try the next conditions. + if let Some(big_var_snippet) = snippet_opt(cx, big_var.span) + && let Some(little_var_snippet) = snippet_opt(cx, little_var.span) + && (!is_in_const_context(cx) || msrv.meets(msrvs::SATURATING_SUB_CONST)) + { + span_lint_and_sugg( + cx, + IMPLICIT_SATURATING_SUB, + expr_span, + "manual arithmetic check found", + "replace it with", + format!("{big_var_snippet}.saturating_sub({little_var_snippet})"), + Applicability::MachineApplicable, + ); + } + } else if Some(little_var.hir_id) == local_left + && Some(big_var.hir_id) == local_right + && let Some(big_var_snippet) = snippet_opt(cx, big_var.span) + && let Some(little_var_snippet) = snippet_opt(cx, little_var.span) { - // Handle symmetric conditions in the if statement - let (cond_var, cond_num_val) = if SpanlessEq::new(cx).eq_expr(cond_left, target) { - if BinOpKind::Gt == cond_op.node || BinOpKind::Ne == cond_op.node { - (cond_left, cond_right) - } else { - return; - } - } else if SpanlessEq::new(cx).eq_expr(cond_right, target) { - if BinOpKind::Lt == cond_op.node || BinOpKind::Ne == cond_op.node { - (cond_right, cond_left) - } else { - return; - } + span_lint_and_then( + cx, + INVERTED_SATURATING_SUB, + condition_span, + "inverted arithmetic check before subtraction", + |diag| { + diag.span_note( + if_block.span, + format!("this subtraction underflows when `{little_var_snippet} < {big_var_snippet}`"), + ); + diag.span_suggestion( + if_block.span, + "try replacing it with", + format!("{big_var_snippet} - {little_var_snippet}"), + Applicability::MaybeIncorrect, + ); + }, + ); + } + } +} + +fn check_with_condition<'tcx>( + cx: &LateContext<'tcx>, + expr: &Expr<'tcx>, + cond_op: BinOpKind, + cond_left: &Expr<'tcx>, + cond_right: &Expr<'tcx>, + then: &Expr<'tcx>, +) { + // Ensure that the binary operator is >, !=, or < + if (BinOpKind::Ne == cond_op || BinOpKind::Gt == cond_op || BinOpKind::Lt == cond_op) + + // Check if assign operation is done + && let Some(target) = subtracts_one(cx, then) + + // Extracting out the variable name + && let ExprKind::Path(QPath::Resolved(_, ares_path)) = target.kind + { + // Handle symmetric conditions in the if statement + let (cond_var, cond_num_val) = if SpanlessEq::new(cx).eq_expr(cond_left, target) { + if BinOpKind::Gt == cond_op || BinOpKind::Ne == cond_op { + (cond_left, cond_right) } else { return; - }; - - // Check if the variable in the condition statement is an integer - if !cx.typeck_results().expr_ty(cond_var).is_integral() { + } + } else if SpanlessEq::new(cx).eq_expr(cond_right, target) { + if BinOpKind::Lt == cond_op || BinOpKind::Ne == cond_op { + (cond_right, cond_left) + } else { return; } + } else { + return; + }; - // Get the variable name - let var_name = ares_path.segments[0].ident.name.as_str(); - match cond_num_val.kind { - ExprKind::Lit(cond_lit) => { - // Check if the constant is zero - if let LitKind::Int(Pu128(0), _) = cond_lit.node { - if cx.typeck_results().expr_ty(cond_left).is_signed() { - } else { - print_lint_and_sugg(cx, var_name, expr); - }; - } - }, - ExprKind::Path(QPath::TypeRelative(_, name)) => { - if name.ident.as_str() == "MIN" - && let Some(const_id) = cx.typeck_results().type_dependent_def_id(cond_num_val.hir_id) - && let Some(impl_id) = cx.tcx.impl_of_method(const_id) - && let None = cx.tcx.impl_trait_ref(impl_id) // An inherent impl - && cx.tcx.type_of(impl_id).instantiate_identity().is_integral() - { - print_lint_and_sugg(cx, var_name, expr); - } - }, - ExprKind::Call(func, []) => { - if let ExprKind::Path(QPath::TypeRelative(_, name)) = func.kind - && name.ident.as_str() == "min_value" - && let Some(func_id) = cx.typeck_results().type_dependent_def_id(func.hir_id) - && let Some(impl_id) = cx.tcx.impl_of_method(func_id) - && let None = cx.tcx.impl_trait_ref(impl_id) // An inherent impl - && cx.tcx.type_of(impl_id).instantiate_identity().is_integral() - { + // Check if the variable in the condition statement is an integer + if !cx.typeck_results().expr_ty(cond_var).is_integral() { + return; + } + + // Get the variable name + let var_name = ares_path.segments[0].ident.name.as_str(); + match cond_num_val.kind { + ExprKind::Lit(cond_lit) => { + // Check if the constant is zero + if let LitKind::Int(Pu128(0), _) = cond_lit.node { + if cx.typeck_results().expr_ty(cond_left).is_signed() { + } else { print_lint_and_sugg(cx, var_name, expr); - } - }, - _ => (), - } + }; + } + }, + ExprKind::Path(QPath::TypeRelative(_, name)) => { + if name.ident.as_str() == "MIN" + && let Some(const_id) = cx.typeck_results().type_dependent_def_id(cond_num_val.hir_id) + && let Some(impl_id) = cx.tcx.impl_of_method(const_id) + && let None = cx.tcx.impl_trait_ref(impl_id) // An inherent impl + && cx.tcx.type_of(impl_id).instantiate_identity().is_integral() + { + print_lint_and_sugg(cx, var_name, expr); + } + }, + ExprKind::Call(func, []) => { + if let ExprKind::Path(QPath::TypeRelative(_, name)) = func.kind + && name.ident.as_str() == "min_value" + && let Some(func_id) = cx.typeck_results().type_dependent_def_id(func.hir_id) + && let Some(impl_id) = cx.tcx.impl_of_method(func_id) + && let None = cx.tcx.impl_trait_ref(impl_id) // An inherent impl + && cx.tcx.type_of(impl_id).instantiate_identity().is_integral() + { + print_lint_and_sugg(cx, var_name, expr); + } + }, + _ => (), } } } diff --git a/src/tools/clippy/clippy_lints/src/implied_bounds_in_impls.rs b/src/tools/clippy/clippy_lints/src/implied_bounds_in_impls.rs index 6794c6cabfe..5f349d78053 100644 --- a/src/tools/clippy/clippy_lints/src/implied_bounds_in_impls.rs +++ b/src/tools/clippy/clippy_lints/src/implied_bounds_in_impls.rs @@ -3,7 +3,7 @@ use clippy_utils::source::snippet; use rustc_errors::{Applicability, SuggestionStyle}; use rustc_hir::def_id::DefId; use rustc_hir::{ - AssocItemConstraint, GenericArg, GenericBound, GenericBounds, ItemKind, PredicateOrigin, TraitBoundModifier, + AssocItemConstraint, GenericArg, GenericBound, GenericBounds, PredicateOrigin, TraitBoundModifier, TyKind, WherePredicate, }; use rustc_hir_analysis::lower_ty; @@ -342,11 +342,8 @@ impl<'tcx> LateLintPass<'tcx> for ImpliedBoundsInImpls { } } - fn check_ty(&mut self, cx: &LateContext<'_>, ty: &rustc_hir::Ty<'_>) { - if let TyKind::OpaqueDef(item_id, ..) = ty.kind - && let item = cx.tcx.hir().item(item_id) - && let ItemKind::OpaqueTy(opaque_ty) = item.kind - { + fn check_ty(&mut self, cx: &LateContext<'tcx>, ty: &rustc_hir::Ty<'tcx>) { + if let TyKind::OpaqueDef(opaque_ty, ..) = ty.kind { check(cx, opaque_ty.bounds); } } diff --git a/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs b/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs index 2ad045e1268..0b3a6ee1bea 100644 --- a/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs +++ b/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::Msrv; use clippy_config::Conf; +use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint; use clippy_utils::is_in_test; use rustc_attr::{StabilityLevel, StableSince}; @@ -7,7 +7,7 @@ use rustc_data_structures::fx::FxHashMap; use rustc_hir::{Expr, ExprKind, HirId}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::TyCtxt; -use rustc_session::{impl_lint_pass, RustcVersion}; +use rustc_session::{RustcVersion, impl_lint_pass}; use rustc_span::def_id::DefId; use rustc_span::{ExpnKind, Span}; diff --git a/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs b/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs index 2f9661c9ea3..73ebe6aec15 100644 --- a/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs +++ b/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::IfLet; @@ -8,14 +8,14 @@ use clippy_utils::{is_expn_of, is_lint_allowed, path_to_local}; use rustc_data_structures::fx::{FxHashSet, FxIndexMap}; use rustc_errors::Applicability; use rustc_hir as hir; -use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::HirId; +use rustc_hir::intravisit::{self, Visitor}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::symbol::Ident; use rustc_span::Span; +use rustc_span::symbol::Ident; declare_clippy_lint! { /// ### What it does @@ -226,7 +226,7 @@ struct SliceIndexLintingVisitor<'a, 'tcx> { max_suggested_slice: u64, } -impl<'a, 'tcx> Visitor<'tcx> for SliceIndexLintingVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for SliceIndexLintingVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn nested_visit_map(&mut self) -> Self::Map { diff --git a/src/tools/clippy/clippy_lints/src/ineffective_open_options.rs b/src/tools/clippy/clippy_lints/src/ineffective_open_options.rs index af5b1f95739..3a28553b55e 100644 --- a/src/tools/clippy/clippy_lints/src/ineffective_open_options.rs +++ b/src/tools/clippy/clippy_lints/src/ineffective_open_options.rs @@ -7,7 +7,7 @@ use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{sym, BytePos, Span}; +use rustc_span::{BytePos, Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/instant_subtraction.rs b/src/tools/clippy/clippy_lints/src/instant_subtraction.rs index 6d6820311b6..66931a7f98c 100644 --- a/src/tools/clippy/clippy_lints/src/instant_subtraction.rs +++ b/src/tools/clippy/clippy_lints/src/instant_subtraction.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; use clippy_utils::sugg::Sugg; diff --git a/src/tools/clippy/clippy_lints/src/item_name_repetitions.rs b/src/tools/clippy/clippy_lints/src/item_name_repetitions.rs index 74bf82f58bd..66a8a3167a4 100644 --- a/src/tools/clippy/clippy_lints/src/item_name_repetitions.rs +++ b/src/tools/clippy/clippy_lints/src/item_name_repetitions.rs @@ -8,8 +8,8 @@ use rustc_data_structures::fx::FxHashSet; use rustc_hir::{EnumDef, FieldDef, Item, ItemKind, OwnerId, Variant, VariantData}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::Symbol; use rustc_span::Span; +use rustc_span::symbol::Symbol; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/items_after_test_module.rs b/src/tools/clippy/clippy_lints/src/items_after_test_module.rs index 8caa484bb99..1ac549b74ac 100644 --- a/src/tools/clippy/clippy_lints/src/items_after_test_module.rs +++ b/src/tools/clippy/clippy_lints/src/items_after_test_module.rs @@ -6,7 +6,7 @@ use rustc_hir::{HirId, Item, ItemKind, Mod}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::hygiene::AstPass; -use rustc_span::{sym, ExpnKind}; +use rustc_span::{ExpnKind, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/iter_not_returning_iterator.rs b/src/tools/clippy/clippy_lints/src/iter_not_returning_iterator.rs index ba0cd5d6eb3..b19b348c743 100644 --- a/src/tools/clippy/clippy_lints/src/iter_not_returning_iterator.rs +++ b/src/tools/clippy/clippy_lints/src/iter_not_returning_iterator.rs @@ -4,7 +4,7 @@ use rustc_hir::def_id::LocalDefId; use rustc_hir::{FnSig, ImplItem, ImplItemKind, Item, ItemKind, Node, TraitItem, TraitItemKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/iter_over_hash_type.rs b/src/tools/clippy/clippy_lints/src/iter_over_hash_type.rs index f162948bb44..5131f5b7269 100644 --- a/src/tools/clippy/clippy_lints/src/iter_over_hash_type.rs +++ b/src/tools/clippy/clippy_lints/src/iter_over_hash_type.rs @@ -55,7 +55,9 @@ impl LateLintPass<'_> for IterOverHashType { if let Some(for_loop) = ForLoop::hir(expr) && !for_loop.body.span.from_expansion() && let ty = cx.typeck_results().expr_ty(for_loop.arg).peel_refs() - && hash_iter_tys.into_iter().any(|sym| is_type_diagnostic_item(cx, ty, sym)) + && hash_iter_tys + .into_iter() + .any(|sym| is_type_diagnostic_item(cx, ty, sym)) { span_lint( cx, diff --git a/src/tools/clippy/clippy_lints/src/large_enum_variant.rs b/src/tools/clippy/clippy_lints/src/large_enum_variant.rs index 2f027c11707..923089c7223 100644 --- a/src/tools/clippy/clippy_lints/src/large_enum_variant.rs +++ b/src/tools/clippy/clippy_lints/src/large_enum_variant.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet_with_applicability; -use clippy_utils::ty::{approx_ty_size, is_copy, AdtVariantInfo}; +use clippy_utils::ty::{AdtVariantInfo, approx_ty_size, is_copy}; use rustc_errors::Applicability; use rustc_hir::{Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/large_stack_arrays.rs b/src/tools/clippy/clippy_lints/src/large_stack_arrays.rs index 15a75b06089..0f061d6de50 100644 --- a/src/tools/clippy/clippy_lints/src/large_stack_arrays.rs +++ b/src/tools/clippy/clippy_lints/src/large_stack_arrays.rs @@ -8,7 +8,7 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::{self, ConstKind}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/legacy_numeric_constants.rs b/src/tools/clippy/clippy_lints/src/legacy_numeric_constants.rs index ccab1e27d3b..e17d6213679 100644 --- a/src/tools/clippy/clippy_lints/src/legacy_numeric_constants.rs +++ b/src/tools/clippy/clippy_lints/src/legacy_numeric_constants.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{Msrv, NUMERIC_ASSOCIATED_CONSTANTS}; use clippy_config::Conf; +use clippy_config::msrvs::{Msrv, NUMERIC_ASSOCIATED_CONSTANTS}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::{get_parent_expr, is_from_proc_macro}; use hir::def_id::DefId; @@ -10,7 +10,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; use rustc_span::symbol::kw; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/len_zero.rs b/src/tools/clippy/clippy_lints/src/len_zero.rs index 16f86b18e2e..311bbce14bd 100644 --- a/src/tools/clippy/clippy_lints/src/len_zero.rs +++ b/src/tools/clippy/clippy_lints/src/len_zero.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_then}; -use clippy_utils::source::{snippet_with_context, SpanRangeExt}; -use clippy_utils::sugg::{has_enclosing_paren, Sugg}; -use clippy_utils::{get_item_name, get_parent_as_impl, is_lint_allowed, peel_ref_operators}; +use clippy_utils::source::{SpanRangeExt, snippet_with_context}; +use clippy_utils::sugg::{Sugg, has_enclosing_paren}; +use clippy_utils::{get_item_name, get_parent_as_impl, is_lint_allowed, is_trait_method, peel_ref_operators}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::def::Res; @@ -185,6 +185,19 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { ); } + if let ExprKind::MethodCall(method, lhs_expr, [rhs_expr], _) = expr.kind + && is_trait_method(cx, expr, sym::PartialEq) + && !expr.span.from_expansion() + { + check_empty_expr( + cx, + expr.span, + lhs_expr, + peel_ref_operators(cx, rhs_expr), + (method.ident.name == sym::ne).then_some("!").unwrap_or_default(), + ); + } + if let ExprKind::Binary(Spanned { node: cmp, .. }, left, right) = expr.kind && !expr.span.from_expansion() { @@ -295,12 +308,8 @@ enum LenOutput { fn extract_future_output<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<&'tcx PathSegment<'tcx>> { if let ty::Alias(_, alias_ty) = ty.kind() - && let Some(Node::Item(item)) = cx.tcx.hir().get_if_local(alias_ty.def_id) - && let Item { - kind: ItemKind::OpaqueTy(opaque), - .. - } = item - && let OpaqueTyOrigin::AsyncFn(_) = opaque.origin + && let Some(Node::OpaqueTy(opaque)) = cx.tcx.hir().get_if_local(alias_ty.def_id) + && let OpaqueTyOrigin::AsyncFn { .. } = opaque.origin && let [GenericBound::Trait(trait_ref, _)] = &opaque.bounds && let Some(segment) = trait_ref.trait_ref.path.segments.last() && let Some(generic_args) = segment.args @@ -447,7 +456,7 @@ fn check_for_is_empty( let is_empty = cx .tcx .inherent_impls(impl_ty) - .into_iter() + .iter() .flat_map(|&id| cx.tcx.associated_items(id).filter_by_name_unhygienic(is_empty)) .find(|item| item.kind == AssocKind::Fn); @@ -615,7 +624,7 @@ fn has_is_empty(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { /// Checks the inherent impl's items for an `is_empty(self)` method. fn has_is_empty_impl(cx: &LateContext<'_>, id: DefId) -> bool { let is_empty = sym!(is_empty); - cx.tcx.inherent_impls(id).into_iter().any(|imp| { + cx.tcx.inherent_impls(id).iter().any(|imp| { cx.tcx .associated_items(*imp) .filter_by_name_unhygienic(is_empty) diff --git a/src/tools/clippy/clippy_lints/src/lib.rs b/src/tools/clippy/clippy_lints/src/lib.rs index 2ac06b360be..012aa689d4b 100644 --- a/src/tools/clippy/clippy_lints/src/lib.rs +++ b/src/tools/clippy/clippy_lints/src/lib.rs @@ -1,7 +1,6 @@ #![feature(array_windows)] #![feature(binary_heap_into_iter_sorted)] #![feature(box_patterns)] -#![feature(control_flow_enum)] #![feature(f128)] #![feature(f16)] #![feature(if_let_guard)] @@ -203,9 +202,11 @@ mod manual_assert; mod manual_async_fn; mod manual_bits; mod manual_clamp; +mod manual_div_ceil; mod manual_float_methods; mod manual_hash_one; mod manual_is_ascii_check; +mod manual_is_power_of_two; mod manual_let_else; mod manual_main_separator_str; mod manual_non_exhaustive; @@ -271,6 +272,7 @@ mod non_copy_const; mod non_expressive_names; mod non_octal_unix_permissions; mod non_send_fields_in_send_ty; +mod non_zero_suggestions; mod nonstandard_macro_braces; mod octal_escapes; mod only_used_in_recursion; @@ -287,6 +289,7 @@ mod pass_by_ref_or_value; mod pathbuf_init_then_push; mod pattern_type_mismatch; mod permissions_set_readonly_false; +mod pointers_in_nomem_asm_block; mod precedence; mod ptr; mod ptr_offset_with_cast; @@ -372,6 +375,7 @@ mod unused_peekable; mod unused_result_ok; mod unused_rounding; mod unused_self; +mod unused_trait_names; mod unused_unit; mod unwrap; mod unwrap_in_result; @@ -386,9 +390,10 @@ mod write; mod zero_div_zero; mod zero_repeat_side_effects; mod zero_sized_map_values; +mod zombie_processes; // end lints modules, do not remove this comment, it’s used in `update_lints` -use clippy_config::{get_configuration_metadata, Conf}; +use clippy_config::{Conf, get_configuration_metadata}; use clippy_utils::macros::FormatArgsStorage; use rustc_data_structures::fx::FxHashSet; use rustc_lint::{Lint, LintId}; @@ -603,7 +608,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |tcx| Box::new(await_holding_invalid::AwaitHolding::new(tcx, conf))); store.register_late_pass(|_| Box::new(serde_api::SerdeApi)); store.register_late_pass(move |_| Box::new(types::Types::new(conf))); - store.register_late_pass(|_| Box::new(booleans::NonminimalBool)); + store.register_late_pass(move |_| Box::new(booleans::NonminimalBool::new(conf))); store.register_late_pass(|_| Box::new(enum_clike::UnportableVariant)); store.register_late_pass(|_| Box::new(float_literal::FloatLiteral)); store.register_late_pass(|_| Box::new(ptr::Ptr)); @@ -623,7 +628,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(|_| Box::new(unit_return_expecting_ord::UnitReturnExpectingOrd)); store.register_late_pass(|_| Box::new(strings::StringAdd)); store.register_late_pass(|_| Box::new(implicit_return::ImplicitReturn)); - store.register_late_pass(|_| Box::new(implicit_saturating_sub::ImplicitSaturatingSub)); + store.register_late_pass(move |_| Box::new(implicit_saturating_sub::ImplicitSaturatingSub::new(conf))); store.register_late_pass(|_| Box::new(default_numeric_fallback::DefaultNumericFallback)); store.register_late_pass(|_| Box::new(inconsistent_struct_constructor::InconsistentStructConstructor)); store.register_late_pass(|_| Box::new(non_octal_unix_permissions::NonOctalUnixPermissions)); @@ -632,8 +637,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { let format_args = format_args_storage.clone(); store.register_late_pass(move |_| Box::new(methods::Methods::new(conf, format_args.clone()))); store.register_late_pass(move |_| Box::new(matches::Matches::new(conf))); - store.register_early_pass(move || Box::new(manual_non_exhaustive::ManualNonExhaustiveStruct::new(conf))); - store.register_late_pass(move |_| Box::new(manual_non_exhaustive::ManualNonExhaustiveEnum::new(conf))); + store.register_late_pass(move |_| Box::new(manual_non_exhaustive::ManualNonExhaustive::new(conf))); store.register_late_pass(move |_| Box::new(manual_strip::ManualStrip::new(conf))); store.register_early_pass(move || Box::new(redundant_static_lifetimes::RedundantStaticLifetimes::new(conf))); store.register_early_pass(move || Box::new(redundant_field_names::RedundantFieldNames::new(conf))); @@ -933,5 +937,11 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(|_| Box::new(set_contains_or_insert::SetContainsOrInsert)); store.register_early_pass(|| Box::new(byte_char_slices::ByteCharSlice)); store.register_early_pass(|| Box::new(cfg_not_test::CfgNotTest)); + store.register_late_pass(|_| Box::new(zombie_processes::ZombieProcesses)); + store.register_late_pass(|_| Box::new(pointers_in_nomem_asm_block::PointersInNomemAsmBlock)); + store.register_late_pass(move |_| Box::new(manual_div_ceil::ManualDivCeil::new(conf))); + store.register_late_pass(|_| Box::new(manual_is_power_of_two::ManualIsPowerOfTwo)); + store.register_late_pass(|_| Box::new(non_zero_suggestions::NonZeroSuggestions)); + store.register_late_pass(move |_| Box::new(unused_trait_names::UnusedTraitNames::new(conf))); // add lints here, do not remove this comment, it's used in `new_lint` } diff --git a/src/tools/clippy/clippy_lints/src/lifetimes.rs b/src/tools/clippy/clippy_lints/src/lifetimes.rs index ba34af9c100..7c3ef98fd74 100644 --- a/src/tools/clippy/clippy_lints/src/lifetimes.rs +++ b/src/tools/clippy/clippy_lints/src/lifetimes.rs @@ -3,25 +3,25 @@ use clippy_utils::trait_ref_of_method; use itertools::Itertools; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_errors::Applicability; +use rustc_hir::FnRetTy::Return; use rustc_hir::intravisit::nested_filter::{self as hir_nested_filter, NestedFilter}; use rustc_hir::intravisit::{ - walk_fn_decl, walk_generic_param, walk_generics, walk_impl_item_ref, walk_item, walk_param_bound, - walk_poly_trait_ref, walk_trait_ref, walk_ty, Visitor, + Visitor, walk_fn_decl, walk_generic_args, walk_generics, walk_impl_item_ref, walk_param_bound, + walk_poly_trait_ref, walk_trait_ref, walk_ty, walk_where_predicate, }; -use rustc_hir::FnRetTy::Return; use rustc_hir::{ - lang_items, BareFnTy, BodyId, FnDecl, FnSig, GenericArg, GenericBound, GenericParam, GenericParamKind, Generics, + BareFnTy, BodyId, FnDecl, FnSig, GenericArg, GenericArgs, GenericBound, GenericParam, GenericParamKind, Generics, Impl, ImplItem, ImplItemKind, Item, ItemKind, Lifetime, LifetimeName, LifetimeParamKind, Node, PolyTraitRef, - PredicateOrigin, TraitFn, TraitItem, TraitItemKind, Ty, TyKind, WherePredicate, + PredicateOrigin, TraitFn, TraitItem, TraitItemKind, Ty, TyKind, WherePredicate, lang_items, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::hir::map::Map; use rustc_middle::hir::nested_filter as middle_nested_filter; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; -use rustc_span::def_id::LocalDefId; -use rustc_span::symbol::{kw, Ident, Symbol}; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; +use rustc_span::symbol::{Ident, kw}; use std::ops::ControlFlow; declare_clippy_lint! { @@ -191,45 +191,10 @@ fn check_fn_inner<'tcx>( if usages.iter().any(|usage| !usage.ident.span.eq_ctxt(span)) { return; } - - let lts = elidable_lts - .iter() - // In principle, the result of the call to `Node::ident` could be `unwrap`ped, as `DefId` should refer to a - // `Node::GenericParam`. - .filter_map(|&def_id| cx.tcx.hir_node_by_def_id(def_id).ident()) - .map(|ident| ident.to_string()) - .collect::<Vec<_>>() - .join(", "); - - span_lint_and_then( - cx, - NEEDLESS_LIFETIMES, - elidable_lts - .iter() - .map(|<| cx.tcx.def_span(lt)) - .chain(usages.iter().filter_map(|usage| { - if let LifetimeName::Param(def_id) = usage.res - && elidable_lts.contains(&def_id) - { - return Some(usage.ident.span); - } - - None - })) - .collect_vec(), - format!("the following explicit lifetimes could be elided: {lts}"), - |diag| { - if sig.header.is_async() { - // async functions have usages whose spans point at the lifetime declaration which messes up - // suggestions - return; - }; - - if let Some(suggestions) = elision_suggestions(cx, generics, &elidable_lts, &usages) { - diag.multipart_suggestion("elide the lifetimes", suggestions, Applicability::MachineApplicable); - } - }, - ); + // async functions have usages whose spans point at the lifetime declaration which messes up + // suggestions + let include_suggestions = !sig.header.is_async(); + report_elidable_lifetimes(cx, generics, &elidable_lts, &usages, include_suggestions); } if report_extra_lifetimes { @@ -237,97 +202,6 @@ fn check_fn_inner<'tcx>( } } -fn elision_suggestions( - cx: &LateContext<'_>, - generics: &Generics<'_>, - elidable_lts: &[LocalDefId], - usages: &[Lifetime], -) -> Option<Vec<(Span, String)>> { - let explicit_params = generics - .params - .iter() - .filter(|param| !param.is_elided_lifetime() && !param.is_impl_trait()) - .collect::<Vec<_>>(); - - let mut suggestions = if elidable_lts.len() == explicit_params.len() { - // if all the params are elided remove the whole generic block - // - // fn x<'a>() {} - // ^^^^ - vec![(generics.span, String::new())] - } else { - elidable_lts - .iter() - .map(|&id| { - let pos = explicit_params.iter().position(|param| param.def_id == id)?; - let param = explicit_params.get(pos)?; - - let span = if let Some(next) = explicit_params.get(pos + 1) { - // fn x<'prev, 'a, 'next>() {} - // ^^^^ - param.span.until(next.span) - } else { - // `pos` should be at least 1 here, because the param in position 0 would either have a `next` - // param or would have taken the `elidable_lts.len() == explicit_params.len()` branch. - let prev = explicit_params.get(pos - 1)?; - - // fn x<'prev, 'a>() {} - // ^^^^ - param.span.with_lo(prev.span.hi()) - }; - - Some((span, String::new())) - }) - .collect::<Option<Vec<_>>>()? - }; - - suggestions.extend( - usages - .iter() - .filter(|usage| named_lifetime(usage).map_or(false, |id| elidable_lts.contains(&id))) - .map(|usage| { - match cx.tcx.parent_hir_node(usage.hir_id) { - Node::Ty(Ty { - kind: TyKind::Ref(..), .. - }) => { - // expand `&'a T` to `&'a T` - // ^^ ^^^ - let span = cx.sess().source_map().span_extend_while_whitespace(usage.ident.span); - - (span, String::new()) - }, - // `T<'a>` and `impl Foo + 'a` should be replaced by `'_` - _ => (usage.ident.span, String::from("'_")), - } - }), - ); - - Some(suggestions) -} - -// elision doesn't work for explicit self types, see rust-lang/rust#69064 -fn explicit_self_type<'tcx>(cx: &LateContext<'tcx>, func: &FnDecl<'tcx>, ident: Option<Ident>) -> bool { - if let Some(ident) = ident - && ident.name == kw::SelfLower - && !func.implicit_self.has_implicit_self() - && let Some(self_ty) = func.inputs.first() - { - let mut visitor = RefVisitor::new(cx); - visitor.visit_ty(self_ty); - - !visitor.all_lts().is_empty() - } else { - false - } -} - -fn named_lifetime(lt: &Lifetime) -> Option<LocalDefId> { - match lt.res { - LifetimeName::Param(id) if !lt.is_anonymous() => Some(id), - _ => None, - } -} - fn could_use_elision<'tcx>( cx: &LateContext<'tcx>, func: &'tcx FnDecl<'_>, @@ -450,6 +324,22 @@ fn allowed_lts_from(named_generics: &[GenericParam<'_>]) -> FxHashSet<LocalDefId .collect() } +// elision doesn't work for explicit self types, see rust-lang/rust#69064 +fn explicit_self_type<'tcx>(cx: &LateContext<'tcx>, func: &FnDecl<'tcx>, ident: Option<Ident>) -> bool { + if let Some(ident) = ident + && ident.name == kw::SelfLower + && !func.implicit_self.has_implicit_self() + && let Some(self_ty) = func.inputs.first() + { + let mut visitor = RefVisitor::new(cx); + visitor.visit_ty(self_ty); + + !visitor.all_lts().is_empty() + } else { + false + } +} + /// Number of times each named lifetime occurs in the given slice. Returns a vector to preserve /// relative order. #[must_use] @@ -470,6 +360,13 @@ fn named_lifetime_occurrences(lts: &[Lifetime]) -> Vec<(LocalDefId, usize)> { occurrences } +fn named_lifetime(lt: &Lifetime) -> Option<LocalDefId> { + match lt.res { + LifetimeName::Param(id) if !lt.is_anonymous() => Some(id), + _ => None, + } +} + struct RefVisitor<'a, 'tcx> { cx: &'a LateContext<'tcx>, lts: Vec<Lifetime>, @@ -500,7 +397,7 @@ impl<'a, 'tcx> RefVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for RefVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for RefVisitor<'_, 'tcx> { // for lifetimes as parameters of generics fn visit_lifetime(&mut self, lifetime: &'tcx Lifetime) { self.lts.push(*lifetime); @@ -523,11 +420,9 @@ impl<'a, 'tcx> Visitor<'tcx> for RefVisitor<'a, 'tcx> { fn visit_ty(&mut self, ty: &'tcx Ty<'_>) { match ty.kind { - TyKind::OpaqueDef(item, bounds, _) => { - let map = self.cx.tcx.hir(); - let item = map.item(item); + TyKind::OpaqueDef(opaque, bounds) => { let len = self.lts.len(); - walk_item(self, item); + self.visit_opaque_ty(opaque); self.lts.truncate(len); self.lts.extend(bounds.iter().filter_map(|bound| match bound { GenericArg::Lifetime(&l) => Some(l), @@ -594,23 +489,43 @@ fn has_where_lifetimes<'tcx>(cx: &LateContext<'tcx>, generics: &'tcx Generics<'_ false } +struct Usage { + lifetime: Lifetime, + in_where_predicate: bool, + in_generics_arg: bool, +} + struct LifetimeChecker<'cx, 'tcx, F> { cx: &'cx LateContext<'tcx>, - map: FxHashMap<Symbol, Span>, + map: FxHashMap<LocalDefId, Vec<Usage>>, + where_predicate_depth: usize, + generic_args_depth: usize, phantom: std::marker::PhantomData<F>, } impl<'cx, 'tcx, F> LifetimeChecker<'cx, 'tcx, F> { - fn new(cx: &'cx LateContext<'tcx>, map: FxHashMap<Symbol, Span>) -> LifetimeChecker<'cx, 'tcx, F> { + fn new(cx: &'cx LateContext<'tcx>, generics: &'tcx Generics<'_>) -> LifetimeChecker<'cx, 'tcx, F> { + let map = generics + .params + .iter() + .filter_map(|par| match par.kind { + GenericParamKind::Lifetime { + kind: LifetimeParamKind::Explicit, + } => Some((par.def_id, Vec::new())), + _ => None, + }) + .collect(); Self { cx, map, + where_predicate_depth: 0, + generic_args_depth: 0, phantom: std::marker::PhantomData, } } } -impl<'cx, 'tcx, F> Visitor<'tcx> for LifetimeChecker<'cx, 'tcx, F> +impl<'tcx, F> Visitor<'tcx> for LifetimeChecker<'_, 'tcx, F> where F: NestedFilter<'tcx>, { @@ -619,18 +534,27 @@ where // for lifetimes as parameters of generics fn visit_lifetime(&mut self, lifetime: &'tcx Lifetime) { - self.map.remove(&lifetime.ident.name); + if let LifetimeName::Param(def_id) = lifetime.res + && let Some(usages) = self.map.get_mut(&def_id) + { + usages.push(Usage { + lifetime: *lifetime, + in_where_predicate: self.where_predicate_depth != 0, + in_generics_arg: self.generic_args_depth != 0, + }); + } } - fn visit_generic_param(&mut self, param: &'tcx GenericParam<'_>) { - // don't actually visit `<'a>` or `<'a: 'b>` - // we've already visited the `'a` declarations and - // don't want to spuriously remove them - // `'b` in `'a: 'b` is useless unless used elsewhere in - // a non-lifetime bound - if let GenericParamKind::Type { .. } = param.kind { - walk_generic_param(self, param); - } + fn visit_where_predicate(&mut self, predicate: &'tcx WherePredicate<'tcx>) { + self.where_predicate_depth += 1; + walk_where_predicate(self, predicate); + self.where_predicate_depth -= 1; + } + + fn visit_generic_args(&mut self, generic_args: &'tcx GenericArgs<'tcx>) -> Self::Result { + self.generic_args_depth += 1; + walk_generic_args(self, generic_args); + self.generic_args_depth -= 1; } fn nested_visit_map(&mut self) -> Self::Map { @@ -639,44 +563,28 @@ where } fn report_extra_lifetimes<'tcx>(cx: &LateContext<'tcx>, func: &'tcx FnDecl<'_>, generics: &'tcx Generics<'_>) { - let hs = generics - .params - .iter() - .filter_map(|par| match par.kind { - GenericParamKind::Lifetime { - kind: LifetimeParamKind::Explicit, - } => Some((par.name.ident().name, par.span)), - _ => None, - }) - .collect(); - let mut checker = LifetimeChecker::<hir_nested_filter::None>::new(cx, hs); + let mut checker = LifetimeChecker::<hir_nested_filter::None>::new(cx, generics); walk_generics(&mut checker, generics); walk_fn_decl(&mut checker, func); - for &v in checker.map.values() { - span_lint( - cx, - EXTRA_UNUSED_LIFETIMES, - v, - "this lifetime isn't used in the function definition", - ); + for (def_id, usages) in checker.map { + if usages + .iter() + .all(|usage| usage.in_where_predicate && !usage.in_generics_arg) + { + span_lint( + cx, + EXTRA_UNUSED_LIFETIMES, + cx.tcx.def_span(def_id), + "this lifetime isn't used in the function definition", + ); + } } } fn report_extra_impl_lifetimes<'tcx>(cx: &LateContext<'tcx>, impl_: &'tcx Impl<'_>) { - let hs = impl_ - .generics - .params - .iter() - .filter_map(|par| match par.kind { - GenericParamKind::Lifetime { - kind: LifetimeParamKind::Explicit, - } => Some((par.name.ident().name, par.span)), - _ => None, - }) - .collect(); - let mut checker = LifetimeChecker::<middle_nested_filter::All>::new(cx, hs); + let mut checker = LifetimeChecker::<middle_nested_filter::All>::new(cx, impl_.generics); walk_generics(&mut checker, impl_.generics); if let Some(ref trait_ref) = impl_.of_trait { @@ -687,9 +595,176 @@ fn report_extra_impl_lifetimes<'tcx>(cx: &LateContext<'tcx>, impl_: &'tcx Impl<' walk_impl_item_ref(&mut checker, item); } - for &v in checker.map.values() { - span_lint(cx, EXTRA_UNUSED_LIFETIMES, v, "this lifetime isn't used in the impl"); + for (&def_id, usages) in &checker.map { + if usages + .iter() + .all(|usage| usage.in_where_predicate && !usage.in_generics_arg) + { + span_lint( + cx, + EXTRA_UNUSED_LIFETIMES, + cx.tcx.def_span(def_id), + "this lifetime isn't used in the impl", + ); + } } + + report_elidable_impl_lifetimes(cx, impl_, &checker.map); +} + +// An `impl` lifetime is elidable if it satisfies the following conditions: +// - It is used exactly once. +// - That single use is not in `GenericArgs` in a `WherePredicate`. (Note that `GenericArgs` are +// different from `GenericParam`s.) +fn report_elidable_impl_lifetimes<'tcx>( + cx: &LateContext<'tcx>, + impl_: &'tcx Impl<'_>, + map: &FxHashMap<LocalDefId, Vec<Usage>>, +) { + let single_usages = map + .iter() + .filter_map(|(def_id, usages)| { + if let [ + Usage { + lifetime, + in_where_predicate: false, + .. + } + | Usage { + lifetime, + in_generics_arg: false, + .. + }, + ] = usages.as_slice() + { + Some((def_id, lifetime)) + } else { + None + } + }) + .collect::<Vec<_>>(); + + if single_usages.is_empty() { + return; + } + + let (elidable_lts, usages): (Vec<_>, Vec<_>) = single_usages.into_iter().unzip(); + + report_elidable_lifetimes(cx, impl_.generics, &elidable_lts, &usages, true); +} + +/// Generate diagnostic messages for elidable lifetimes. +fn report_elidable_lifetimes( + cx: &LateContext<'_>, + generics: &Generics<'_>, + elidable_lts: &[LocalDefId], + usages: &[Lifetime], + include_suggestions: bool, +) { + let lts = elidable_lts + .iter() + // In principle, the result of the call to `Node::ident` could be `unwrap`ped, as `DefId` should refer to a + // `Node::GenericParam`. + .filter_map(|&def_id| cx.tcx.hir_node_by_def_id(def_id).ident()) + .map(|ident| ident.to_string()) + .collect::<Vec<_>>() + .join(", "); + + span_lint_and_then( + cx, + NEEDLESS_LIFETIMES, + elidable_lts + .iter() + .map(|<| cx.tcx.def_span(lt)) + .chain(usages.iter().filter_map(|usage| { + if let LifetimeName::Param(def_id) = usage.res + && elidable_lts.contains(&def_id) + { + return Some(usage.ident.span); + } + + None + })) + .collect_vec(), + format!("the following explicit lifetimes could be elided: {lts}"), + |diag| { + if !include_suggestions { + return; + }; + + if let Some(suggestions) = elision_suggestions(cx, generics, elidable_lts, usages) { + diag.multipart_suggestion("elide the lifetimes", suggestions, Applicability::MachineApplicable); + } + }, + ); +} + +fn elision_suggestions( + cx: &LateContext<'_>, + generics: &Generics<'_>, + elidable_lts: &[LocalDefId], + usages: &[Lifetime], +) -> Option<Vec<(Span, String)>> { + let explicit_params = generics + .params + .iter() + .filter(|param| !param.is_elided_lifetime() && !param.is_impl_trait()) + .collect::<Vec<_>>(); + + let mut suggestions = if elidable_lts.len() == explicit_params.len() { + // if all the params are elided remove the whole generic block + // + // fn x<'a>() {} + // ^^^^ + vec![(generics.span, String::new())] + } else { + elidable_lts + .iter() + .map(|&id| { + let pos = explicit_params.iter().position(|param| param.def_id == id)?; + let param = explicit_params.get(pos)?; + + let span = if let Some(next) = explicit_params.get(pos + 1) { + // fn x<'prev, 'a, 'next>() {} + // ^^^^ + param.span.until(next.span) + } else { + // `pos` should be at least 1 here, because the param in position 0 would either have a `next` + // param or would have taken the `elidable_lts.len() == explicit_params.len()` branch. + let prev = explicit_params.get(pos - 1)?; + + // fn x<'prev, 'a>() {} + // ^^^^ + param.span.with_lo(prev.span.hi()) + }; + + Some((span, String::new())) + }) + .collect::<Option<Vec<_>>>()? + }; + + suggestions.extend( + usages + .iter() + .filter(|usage| named_lifetime(usage).map_or(false, |id| elidable_lts.contains(&id))) + .map(|usage| { + match cx.tcx.parent_hir_node(usage.hir_id) { + Node::Ty(Ty { + kind: TyKind::Ref(..), .. + }) => { + // expand `&'a T` to `&'a T` + // ^^ ^^^ + let span = cx.sess().source_map().span_extend_while_whitespace(usage.ident.span); + + (span, String::new()) + }, + // `T<'a>` and `impl Foo + 'a` should be replaced by `'_` + _ => (usage.ident.span, String::from("'_")), + } + }), + ); + + Some(suggestions) } struct BodyLifetimeChecker; diff --git a/src/tools/clippy/clippy_lints/src/loops/explicit_counter_loop.rs b/src/tools/clippy/clippy_lints/src/loops/explicit_counter_loop.rs index 73a23615c2d..9aa4d2f0adc 100644 --- a/src/tools/clippy/clippy_lints/src/loops/explicit_counter_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/explicit_counter_loop.rs @@ -1,4 +1,4 @@ -use super::{make_iterator_snippet, IncrementVisitor, InitializeVisitor, EXPLICIT_COUNTER_LOOP}; +use super::{EXPLICIT_COUNTER_LOOP, IncrementVisitor, InitializeVisitor, make_iterator_snippet}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::{get_enclosing_block, is_integer_const}; diff --git a/src/tools/clippy/clippy_lints/src/loops/infinite_loop.rs b/src/tools/clippy/clippy_lints/src/loops/infinite_loop.rs index 5b5bb88c179..858e3be5093 100644 --- a/src/tools/clippy/clippy_lints/src/loops/infinite_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/infinite_loop.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::{fn_def_id, is_from_proc_macro, is_lint_allowed}; -use hir::intravisit::{walk_expr, Visitor}; +use hir::intravisit::{Visitor, walk_expr}; use hir::{Expr, ExprKind, FnRetTy, FnSig, Node}; use rustc_ast::Label; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/loops/manual_find.rs b/src/tools/clippy/clippy_lints/src/loops/manual_find.rs index b27528c11d4..bfe2e68b5d1 100644 --- a/src/tools/clippy/clippy_lints/src/loops/manual_find.rs +++ b/src/tools/clippy/clippy_lints/src/loops/manual_find.rs @@ -1,5 +1,5 @@ -use super::utils::make_iterator_snippet; use super::MANUAL_FIND; +use super::utils::make_iterator_snippet; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::implements_trait; diff --git a/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs b/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs index dbc094a6d73..366c310592f 100644 --- a/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs +++ b/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs @@ -1,5 +1,5 @@ -use super::utils::make_iterator_snippet; use super::MANUAL_FLATTEN; +use super::utils::make_iterator_snippet; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::visitors::is_local_used; use clippy_utils::{higher, path_to_local_id, peel_blocks_with_stmt}; diff --git a/src/tools/clippy/clippy_lints/src/loops/manual_memcpy.rs b/src/tools/clippy/clippy_lints/src/loops/manual_memcpy.rs index a7c1d1bd6cd..68d063ad5e5 100644 --- a/src/tools/clippy/clippy_lints/src/loops/manual_memcpy.rs +++ b/src/tools/clippy/clippy_lints/src/loops/manual_memcpy.rs @@ -209,7 +209,7 @@ fn build_manual_memcpy_suggestion<'tcx>( #[derive(Clone)] struct MinifyingSugg<'a>(Sugg<'a>); -impl<'a> Display for MinifyingSugg<'a> { +impl Display for MinifyingSugg<'_> { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { self.0.fmt(f) } diff --git a/src/tools/clippy/clippy_lints/src/loops/manual_while_let_some.rs b/src/tools/clippy/clippy_lints/src/loops/manual_while_let_some.rs index 55d1b9ee676..7476a87267f 100644 --- a/src/tools/clippy/clippy_lints/src/loops/manual_while_let_some.rs +++ b/src/tools/clippy/clippy_lints/src/loops/manual_while_let_some.rs @@ -1,10 +1,10 @@ +use clippy_utils::SpanlessEq; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; -use clippy_utils::SpanlessEq; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, Pat, Stmt, StmtKind, UnOp}; use rustc_lint::LateContext; -use rustc_span::{sym, Symbol, Span}; +use rustc_span::{Span, Symbol, sym}; use std::borrow::Cow; use super::MANUAL_WHILE_LET_SOME; diff --git a/src/tools/clippy/clippy_lints/src/loops/missing_spin_loop.rs b/src/tools/clippy/clippy_lints/src/loops/missing_spin_loop.rs index e405829b2f4..a9944d64ce2 100644 --- a/src/tools/clippy/clippy_lints/src/loops/missing_spin_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/missing_spin_loop.rs @@ -1,6 +1,6 @@ use super::MISSING_SPIN_LOOP; use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::is_no_std_crate; +use clippy_utils::std_or_core; use rustc_errors::Applicability; use rustc_hir::{Block, Expr, ExprKind}; use rustc_lint::LateContext; @@ -41,6 +41,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, cond: &'tcx Expr<'_>, body: &' && [sym::load, sym::compare_exchange, sym::compare_exchange_weak].contains(&method.ident.name) && let ty::Adt(def, _args) = cx.typeck_results().expr_ty(callee).kind() && cx.tcx.is_diagnostic_item(sym::AtomicBool, def.did()) + && let Some(std_or_core) = std_or_core(cx) { span_lint_and_sugg( cx, @@ -48,12 +49,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, cond: &'tcx Expr<'_>, body: &' body.span, "busy-waiting loop should at least have a spin loop hint", "try", - (if is_no_std_crate(cx) { - "{ core::hint::spin_loop() }" - } else { - "{ std::hint::spin_loop() }" - }) - .into(), + format!("{{ {std_or_core}::hint::spin_loop() }}"), Applicability::MachineApplicable, ); } diff --git a/src/tools/clippy/clippy_lints/src/loops/mod.rs b/src/tools/clippy/clippy_lints/src/loops/mod.rs index 92ccc0cc0a1..17215621d2a 100644 --- a/src/tools/clippy/clippy_lints/src/loops/mod.rs +++ b/src/tools/clippy/clippy_lints/src/loops/mod.rs @@ -22,15 +22,15 @@ mod while_immutable_condition; mod while_let_loop; mod while_let_on_iterator; -use clippy_config::msrvs::Msrv; use clippy_config::Conf; +use clippy_config::msrvs::Msrv; use clippy_utils::higher; use rustc_ast::Label; use rustc_hir::{Expr, ExprKind, LoopSource, Pat}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; use rustc_span::Span; -use utils::{make_iterator_snippet, IncrementVisitor, InitializeVisitor}; +use utils::{IncrementVisitor, InitializeVisitor, make_iterator_snippet}; declare_clippy_lint! { /// ### What it does @@ -188,22 +188,22 @@ declare_clippy_lint! { /// The `while let` loop is usually shorter and more /// readable. /// - /// ### Known problems - /// Sometimes the wrong binding is displayed ([#383](https://github.com/rust-lang/rust-clippy/issues/383)). - /// /// ### Example /// ```rust,no_run - /// # let y = Some(1); + /// let y = Some(1); /// loop { /// let x = match y { /// Some(x) => x, /// None => break, /// }; - /// // .. do something with x + /// // .. /// } - /// // is easier written as + /// ``` + /// Use instead: + /// ```rust,no_run + /// let y = Some(1); /// while let Some(x) = y { - /// // .. do something with x + /// // .. /// }; /// ``` #[clippy::version = "pre 1.29.0"] diff --git a/src/tools/clippy/clippy_lints/src/loops/needless_range_loop.rs b/src/tools/clippy/clippy_lints/src/loops/needless_range_loop.rs index e18e4374667..745f070a577 100644 --- a/src/tools/clippy/clippy_lints/src/loops/needless_range_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/needless_range_loop.rs @@ -3,17 +3,17 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use clippy_utils::ty::has_iter_method; use clippy_utils::visitors::is_local_used; -use clippy_utils::{contains_name, higher, is_integer_const, sugg, SpanlessEq}; +use clippy_utils::{SpanlessEq, contains_name, higher, is_integer_const, sugg}; use rustc_ast::ast; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BinOpKind, BorrowKind, Closure, Expr, ExprKind, HirId, Mutability, Pat, PatKind, QPath}; use rustc_lint::LateContext; use rustc_middle::middle::region; use rustc_middle::ty::{self, Ty}; -use rustc_span::symbol::{sym, Symbol}; +use rustc_span::symbol::{Symbol, sym}; use std::{iter, mem}; /// Checks for looping over a range and then indexing a sequence with it. @@ -241,7 +241,7 @@ struct VarVisitor<'a, 'tcx> { prefer_mutable: bool, } -impl<'a, 'tcx> VarVisitor<'a, 'tcx> { +impl<'tcx> VarVisitor<'_, 'tcx> { fn check(&mut self, idx: &'tcx Expr<'_>, seqexpr: &'tcx Expr<'_>, expr: &'tcx Expr<'_>) -> bool { if let ExprKind::Path(ref seqpath) = seqexpr.kind // the indexed container is referenced by a name @@ -292,7 +292,7 @@ impl<'a, 'tcx> VarVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for VarVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for VarVisitor<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { if let ExprKind::MethodCall(meth, args_0, [args_1, ..], _) = &expr.kind // a range index op diff --git a/src/tools/clippy/clippy_lints/src/loops/never_loop.rs b/src/tools/clippy/clippy_lints/src/loops/never_loop.rs index 313a5bfefbc..1c55e3e22e8 100644 --- a/src/tools/clippy/clippy_lints/src/loops/never_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/never_loop.rs @@ -1,5 +1,5 @@ -use super::utils::make_iterator_snippet; use super::NEVER_LOOP; +use super::utils::make_iterator_snippet; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::ForLoop; use clippy_utils::macros::root_macro_call_first_node; @@ -7,7 +7,7 @@ use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir::{Block, Destination, Expr, ExprKind, HirId, InlineAsmOperand, Pat, Stmt, StmtKind}; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::iter::once; pub(super) fn check<'tcx>( diff --git a/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs b/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs index 9185cf1f8b2..f8659897ffe 100644 --- a/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs +++ b/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs @@ -6,11 +6,11 @@ use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, Mutability, Node, Pat, PatKind, Stmt, StmtKind}; use rustc_lint::LateContext; -use rustc_span::symbol::sym; use rustc_span::SyntaxContext; +use rustc_span::symbol::sym; /// Detects for loop pushing the same item into a Vec pub(super) fn check<'tcx>( @@ -123,7 +123,7 @@ impl<'a, 'tcx> SameItemPushVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for SameItemPushVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for SameItemPushVisitor<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { match &expr.kind { // Non-determinism may occur ... don't give a lint diff --git a/src/tools/clippy/clippy_lints/src/loops/single_element_loop.rs b/src/tools/clippy/clippy_lints/src/loops/single_element_loop.rs index 2b41911e8ec..70f76ced09a 100644 --- a/src/tools/clippy/clippy_lints/src/loops/single_element_loop.rs +++ b/src/tools/clippy/clippy_lints/src/loops/single_element_loop.rs @@ -2,10 +2,10 @@ use super::SINGLE_ELEMENT_LOOP; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{indent_of, snippet, snippet_with_applicability}; use clippy_utils::visitors::contains_break_or_continue; -use rustc_ast::util::parser::PREC_PREFIX; use rustc_ast::Mutability; +use rustc_ast::util::parser::PREC_PREFIX; use rustc_errors::Applicability; -use rustc_hir::{is_range_literal, BorrowKind, Expr, ExprKind, Pat, PatKind}; +use rustc_hir::{BorrowKind, Expr, ExprKind, Pat, PatKind, is_range_literal}; use rustc_lint::LateContext; use rustc_span::edition::Edition; use rustc_span::sym; diff --git a/src/tools/clippy/clippy_lints/src/loops/utils.rs b/src/tools/clippy/clippy_lints/src/loops/utils.rs index 7b45cc95431..c4c504e1ae4 100644 --- a/src/tools/clippy/clippy_lints/src/loops/utils.rs +++ b/src/tools/clippy/clippy_lints/src/loops/utils.rs @@ -2,13 +2,13 @@ use clippy_utils::ty::{has_iter_method, implements_trait}; use clippy_utils::{get_parent_expr, is_integer_const, path_to_local, path_to_local_id, sugg}; use rustc_ast::ast::{LitIntType, LitKind}; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_expr, walk_local, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr, walk_local}; use rustc_hir::{BinOpKind, BorrowKind, Expr, ExprKind, HirId, HirIdMap, LetStmt, Mutability, PatKind}; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, Ty}; use rustc_span::source_map::Spanned; -use rustc_span::symbol::{sym, Symbol}; +use rustc_span::symbol::{Symbol, sym}; #[derive(Debug, PartialEq, Eq)] enum IncrementVisitorVarState { @@ -44,7 +44,7 @@ impl<'a, 'tcx> IncrementVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for IncrementVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for IncrementVisitor<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { // If node is a variable if let Some(def_id) = path_to_local(expr) { @@ -138,7 +138,7 @@ impl<'a, 'tcx> InitializeVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for InitializeVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for InitializeVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_local(&mut self, l: &'tcx LetStmt<'_>) { diff --git a/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs b/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs index cc1bd5929d0..1a1cde3c5bd 100644 --- a/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs +++ b/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs @@ -4,7 +4,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::usage::mutated_variables; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefIdMap; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Expr, ExprKind, HirIdSet, QPath}; use rustc_lint::LateContext; use std::ops::ControlFlow; @@ -84,7 +84,7 @@ struct VarCollectorVisitor<'a, 'tcx> { skip: bool, } -impl<'a, 'tcx> VarCollectorVisitor<'a, 'tcx> { +impl<'tcx> VarCollectorVisitor<'_, 'tcx> { fn insert_def_id(&mut self, ex: &'tcx Expr<'_>) { if let ExprKind::Path(ref qpath) = ex.kind && let QPath::Resolved(None, _) = *qpath @@ -103,7 +103,7 @@ impl<'a, 'tcx> VarCollectorVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for VarCollectorVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for VarCollectorVisitor<'_, 'tcx> { fn visit_expr(&mut self, ex: &'tcx Expr<'_>) { match ex.kind { ExprKind::Path(_) => self.insert_def_id(ex), diff --git a/src/tools/clippy/clippy_lints/src/loops/while_let_on_iterator.rs b/src/tools/clippy/clippy_lints/src/loops/while_let_on_iterator.rs index c171fa1c622..74467522619 100644 --- a/src/tools/clippy/clippy_lints/src/loops/while_let_on_iterator.rs +++ b/src/tools/clippy/clippy_lints/src/loops/while_let_on_iterator.rs @@ -5,13 +5,13 @@ use clippy_utils::visitors::is_res_used; use clippy_utils::{get_enclosing_loop_or_multi_call_closure, higher, is_refutable, is_res_lang_ctor, is_trait_method}; use rustc_errors::Applicability; use rustc_hir::def::Res; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Closure, Expr, ExprKind, HirId, LangItem, LetStmt, Mutability, PatKind, UnOp}; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter::OnlyBodies; use rustc_middle::ty::adjustment::Adjust; -use rustc_span::symbol::sym; use rustc_span::Symbol; +use rustc_span::symbol::sym; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { if let Some(higher::WhileLet { if_then, let_pat, let_expr, label, .. }) = higher::WhileLet::hir(expr) @@ -283,7 +283,7 @@ fn needs_mutable_borrow(cx: &LateContext<'_>, iter_expr: &IterExpr, loop_expr: & found_local: bool, used_after: bool, } - impl<'a, 'b, 'tcx> Visitor<'tcx> for NestedLoopVisitor<'a, 'b, 'tcx> { + impl<'tcx> Visitor<'tcx> for NestedLoopVisitor<'_, '_, 'tcx> { type NestedFilter = OnlyBodies; fn nested_visit_map(&mut self) -> Self::Map { self.cx.tcx.hir() diff --git a/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs b/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs index e215097142b..312bcb55a95 100644 --- a/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs +++ b/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs @@ -3,13 +3,13 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::is_lint_allowed; use itertools::Itertools; use rustc_hir::def_id::LocalDefId; -use rustc_hir::intravisit::{walk_block, walk_expr, walk_stmt, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_stmt}; use rustc_hir::{BlockCheckMode, Expr, ExprKind, HirId, Stmt, UnsafeSource}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span, SyntaxContext}; -use std::collections::btree_map::Entry; +use rustc_span::{Span, SyntaxContext, sym}; use std::collections::BTreeMap; +use std::collections::btree_map::Entry; declare_clippy_lint! { /// ### What it does @@ -149,7 +149,7 @@ fn is_public_macro(cx: &LateContext<'_>, def_id: LocalDefId) -> bool { && !cx.tcx.is_doc_hidden(def_id) } -impl<'a, 'tcx> Visitor<'tcx> for BodyVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for BodyVisitor<'_, 'tcx> { fn visit_stmt(&mut self, s: &'tcx Stmt<'tcx>) { let from_expn = s.span.from_expansion(); if from_expn { diff --git a/src/tools/clippy/clippy_lints/src/macro_use.rs b/src/tools/clippy/clippy_lints/src/macro_use.rs index 067384b0901..50680331fbc 100644 --- a/src/tools/clippy/clippy_lints/src/macro_use.rs +++ b/src/tools/clippy/clippy_lints/src/macro_use.rs @@ -8,7 +8,7 @@ use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; use rustc_span::edition::Edition; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::collections::BTreeMap; declare_clippy_lint! { @@ -81,7 +81,7 @@ impl MacroUseImports { } } -impl<'tcx> LateLintPass<'tcx> for MacroUseImports { +impl LateLintPass<'_> for MacroUseImports { fn check_item(&mut self, cx: &LateContext<'_>, item: &hir::Item<'_>) { if cx.sess().opts.edition >= Edition::Edition2018 && let hir::ItemKind::Use(path, _kind) = &item.kind diff --git a/src/tools/clippy/clippy_lints/src/manual_async_fn.rs b/src/tools/clippy/clippy_lints/src/manual_async_fn.rs index 61723aec590..81115cffdca 100644 --- a/src/tools/clippy/clippy_lints/src/manual_async_fn.rs +++ b/src/tools/clippy/clippy_lints/src/manual_async_fn.rs @@ -1,15 +1,15 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::{position_before_rarrow, snippet_block, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, position_before_rarrow, snippet_block}; use rustc_errors::Applicability; use rustc_hir::intravisit::FnKind; use rustc_hir::{ Block, Body, Closure, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, Expr, ExprKind, FnDecl, - FnRetTy, GenericArg, GenericBound, ImplItem, Item, ItemKind, LifetimeName, Node, TraitRef, Ty, TyKind, + FnRetTy, GenericArg, GenericBound, ImplItem, Item, LifetimeName, Node, TraitRef, Ty, TyKind, }; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -105,9 +105,7 @@ fn future_trait_ref<'tcx>( cx: &LateContext<'tcx>, ty: &'tcx Ty<'tcx>, ) -> Option<(&'tcx TraitRef<'tcx>, Vec<LifetimeName>)> { - if let TyKind::OpaqueDef(item_id, bounds, false) = ty.kind - && let item = cx.tcx.hir().item(item_id) - && let ItemKind::OpaqueTy(opaque) = &item.kind + if let TyKind::OpaqueDef(opaque, bounds) = ty.kind && let Some(trait_ref) = opaque.bounds.iter().find_map(|bound| { if let GenericBound::Trait(poly, _) = bound { Some(&poly.trait_ref) diff --git a/src/tools/clippy/clippy_lints/src/manual_bits.rs b/src/tools/clippy/clippy_lints/src/manual_bits.rs index 5cbdc7f864a..c0e87e8a1fa 100644 --- a/src/tools/clippy/clippy_lints/src/manual_bits.rs +++ b/src/tools/clippy/clippy_lints/src/manual_bits.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::get_parent_expr; use clippy_utils::source::snippet_with_context; diff --git a/src/tools/clippy/clippy_lints/src/manual_clamp.rs b/src/tools/clippy/clippy_lints/src/manual_clamp.rs index 4123c933660..fd66cacdfe9 100644 --- a/src/tools/clippy/clippy_lints/src/manual_clamp.rs +++ b/src/tools/clippy/clippy_lints/src/manual_clamp.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::higher::If; @@ -7,8 +7,8 @@ use clippy_utils::sugg::Sugg; use clippy_utils::ty::implements_trait; use clippy_utils::visitors::is_const_evaluatable; use clippy_utils::{ - eq_expr_value, is_diag_trait_item, is_in_const_context, is_trait_method, path_res, path_to_local_id, peel_blocks, - peel_blocks_with_stmt, MaybePath, + MaybePath, eq_expr_value, is_diag_trait_item, is_in_const_context, is_trait_method, path_res, path_to_local_id, + peel_blocks, peel_blocks_with_stmt, }; use itertools::Itertools; use rustc_errors::{Applicability, Diag}; @@ -17,8 +17,8 @@ use rustc_hir::{Arm, BinOpKind, Block, Expr, ExprKind, HirId, PatKind, PathSegme use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::Ty; use rustc_session::impl_lint_pass; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use std::cmp::Ordering; use std::ops::Deref; @@ -741,7 +741,7 @@ enum MaybeBorrowedStmtKind<'a> { Owned(StmtKind<'a>), } -impl<'a> Clone for MaybeBorrowedStmtKind<'a> { +impl Clone for MaybeBorrowedStmtKind<'_> { fn clone(&self) -> Self { match self { Self::Borrowed(t) => Self::Borrowed(t), diff --git a/src/tools/clippy/clippy_lints/src/manual_div_ceil.rs b/src/tools/clippy/clippy_lints/src/manual_div_ceil.rs new file mode 100644 index 00000000000..00e02e2a336 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/manual_div_ceil.rs @@ -0,0 +1,158 @@ +use clippy_config::msrvs::{self, Msrv}; +use clippy_utils::SpanlessEq; +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::snippet_with_applicability; +use clippy_utils::sugg::Sugg; +use rustc_ast::{BinOpKind, LitKind}; +use rustc_data_structures::packed::Pu128; +use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::{self}; +use rustc_session::impl_lint_pass; +use rustc_span::symbol::Symbol; + +use clippy_config::Conf; + +declare_clippy_lint! { + /// ### What it does + /// Checks for an expression like `(x + (y - 1)) / y` which is a common manual reimplementation + /// of `x.div_ceil(y)`. + /// + /// ### Why is this bad? + /// It's simpler, clearer and more readable. + /// + /// ### Example + /// ```no_run + /// let x: i32 = 7; + /// let y: i32 = 4; + /// let div = (x + (y - 1)) / y; + /// ``` + /// Use instead: + /// ```no_run + /// #![feature(int_roundings)] + /// let x: i32 = 7; + /// let y: i32 = 4; + /// let div = x.div_ceil(y); + /// ``` + #[clippy::version = "1.81.0"] + pub MANUAL_DIV_CEIL, + complexity, + "manually reimplementing `div_ceil`" +} + +pub struct ManualDivCeil { + msrv: Msrv, +} + +impl ManualDivCeil { + #[must_use] + pub fn new(conf: &'static Conf) -> Self { + Self { + msrv: conf.msrv.clone(), + } + } +} + +impl_lint_pass!(ManualDivCeil => [MANUAL_DIV_CEIL]); + +impl<'tcx> LateLintPass<'tcx> for ManualDivCeil { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'_>) { + if !self.msrv.meets(msrvs::MANUAL_DIV_CEIL) { + return; + } + + let mut applicability = Applicability::MachineApplicable; + + if let ExprKind::Binary(div_op, div_lhs, div_rhs) = expr.kind + && div_op.node == BinOpKind::Div + && check_int_ty_and_feature(cx, div_lhs) + && check_int_ty_and_feature(cx, div_rhs) + && let ExprKind::Binary(inner_op, inner_lhs, inner_rhs) = div_lhs.kind + { + // (x + (y - 1)) / y + if let ExprKind::Binary(sub_op, sub_lhs, sub_rhs) = inner_rhs.kind + && inner_op.node == BinOpKind::Add + && sub_op.node == BinOpKind::Sub + && check_literal(sub_rhs) + && check_eq_expr(cx, sub_lhs, div_rhs) + { + build_suggestion(cx, expr, inner_lhs, div_rhs, &mut applicability); + return; + } + + // ((y - 1) + x) / y + if let ExprKind::Binary(sub_op, sub_lhs, sub_rhs) = inner_lhs.kind + && inner_op.node == BinOpKind::Add + && sub_op.node == BinOpKind::Sub + && check_literal(sub_rhs) + && check_eq_expr(cx, sub_lhs, div_rhs) + { + build_suggestion(cx, expr, inner_rhs, div_rhs, &mut applicability); + return; + } + + // (x + y - 1) / y + if let ExprKind::Binary(add_op, add_lhs, add_rhs) = inner_lhs.kind + && inner_op.node == BinOpKind::Sub + && add_op.node == BinOpKind::Add + && check_literal(inner_rhs) + && check_eq_expr(cx, add_rhs, div_rhs) + { + build_suggestion(cx, expr, add_lhs, div_rhs, &mut applicability); + } + } + } + + extract_msrv_attr!(LateContext); +} + +fn check_int_ty_and_feature(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { + let expr_ty = cx.typeck_results().expr_ty(expr); + match expr_ty.peel_refs().kind() { + ty::Uint(_) => true, + ty::Int(_) => cx + .tcx + .features() + .declared_features + .contains(&Symbol::intern("int_roundings")), + + _ => false, + } +} + +fn check_literal(expr: &Expr<'_>) -> bool { + if let ExprKind::Lit(lit) = expr.kind + && let LitKind::Int(Pu128(1), _) = lit.node + { + return true; + } + false +} + +fn check_eq_expr(cx: &LateContext<'_>, lhs: &Expr<'_>, rhs: &Expr<'_>) -> bool { + SpanlessEq::new(cx).eq_expr(lhs, rhs) +} + +fn build_suggestion( + cx: &LateContext<'_>, + expr: &Expr<'_>, + lhs: &Expr<'_>, + rhs: &Expr<'_>, + applicability: &mut Applicability, +) { + let dividend_sugg = Sugg::hir_with_applicability(cx, lhs, "..", applicability).maybe_par(); + let divisor_snippet = snippet_with_applicability(cx, rhs.span.source_callsite(), "..", applicability); + + let sugg = format!("{dividend_sugg}.div_ceil({divisor_snippet})"); + + span_lint_and_sugg( + cx, + MANUAL_DIV_CEIL, + expr.span, + "manually reimplementing `div_ceil`", + "consider using `.div_ceil()`", + sugg, + *applicability, + ); +} diff --git a/src/tools/clippy/clippy_lints/src/manual_hash_one.rs b/src/tools/clippy/clippy_lints/src/manual_hash_one.rs index 11716a539ab..c62bd65bea6 100644 --- a/src/tools/clippy/clippy_lints/src/manual_hash_one.rs +++ b/src/tools/clippy/clippy_lints/src/manual_hash_one.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::source::SpanRangeExt; use clippy_utils::visitors::{is_local_used, local_used_once}; diff --git a/src/tools/clippy/clippy_lints/src/manual_is_ascii_check.rs b/src/tools/clippy/clippy_lints/src/manual_is_ascii_check.rs index 31c37c3bc3b..24207705743 100644 --- a/src/tools/clippy/clippy_lints/src/manual_is_ascii_check.rs +++ b/src/tools/clippy/clippy_lints/src/manual_is_ascii_check.rs @@ -1,17 +1,17 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::matching_root_macro_call; use clippy_utils::sugg::Sugg; use clippy_utils::{higher, is_in_const_context, path_to_local, peel_ref_operators}; -use rustc_ast::ast::RangeLimits; use rustc_ast::LitKind::{Byte, Char}; +use rustc_ast::ast::RangeLimits; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, Node, Param, PatKind, RangeEnd}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/manual_is_power_of_two.rs b/src/tools/clippy/clippy_lints/src/manual_is_power_of_two.rs new file mode 100644 index 00000000000..da2a982ee17 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/manual_is_power_of_two.rs @@ -0,0 +1,142 @@ +use clippy_utils::SpanlessEq; +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::snippet_with_applicability; +use rustc_ast::LitKind; +use rustc_data_structures::packed::Pu128; +use rustc_errors::Applicability; +use rustc_hir::{BinOpKind, Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::Uint; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// Checks for expressions like `x.count_ones() == 1` or `x & (x - 1) == 0`, with x and unsigned integer, which are manual + /// reimplementations of `x.is_power_of_two()`. + /// ### Why is this bad? + /// Manual reimplementations of `is_power_of_two` increase code complexity for little benefit. + /// ### Example + /// ```no_run + /// let a: u32 = 4; + /// let result = a.count_ones() == 1; + /// ``` + /// Use instead: + /// ```no_run + /// let a: u32 = 4; + /// let result = a.is_power_of_two(); + /// ``` + #[clippy::version = "1.82.0"] + pub MANUAL_IS_POWER_OF_TWO, + complexity, + "manually reimplementing `is_power_of_two`" +} + +declare_lint_pass!(ManualIsPowerOfTwo => [MANUAL_IS_POWER_OF_TWO]); + +impl LateLintPass<'_> for ManualIsPowerOfTwo { + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { + let mut applicability = Applicability::MachineApplicable; + + if let ExprKind::Binary(bin_op, left, right) = expr.kind + && bin_op.node == BinOpKind::Eq + { + // a.count_ones() == 1 + if let ExprKind::MethodCall(method_name, reciever, _, _) = left.kind + && method_name.ident.as_str() == "count_ones" + && let &Uint(_) = cx.typeck_results().expr_ty(reciever).kind() + && check_lit(right, 1) + { + build_sugg(cx, expr, reciever, &mut applicability); + } + + // 1 == a.count_ones() + if let ExprKind::MethodCall(method_name, reciever, _, _) = right.kind + && method_name.ident.as_str() == "count_ones" + && let &Uint(_) = cx.typeck_results().expr_ty(reciever).kind() + && check_lit(left, 1) + { + build_sugg(cx, expr, reciever, &mut applicability); + } + + // a & (a - 1) == 0 + if let ExprKind::Binary(op1, left1, right1) = left.kind + && op1.node == BinOpKind::BitAnd + && let ExprKind::Binary(op2, left2, right2) = right1.kind + && op2.node == BinOpKind::Sub + && check_eq_expr(cx, left1, left2) + && let &Uint(_) = cx.typeck_results().expr_ty(left1).kind() + && check_lit(right2, 1) + && check_lit(right, 0) + { + build_sugg(cx, expr, left1, &mut applicability); + } + + // (a - 1) & a == 0; + if let ExprKind::Binary(op1, left1, right1) = left.kind + && op1.node == BinOpKind::BitAnd + && let ExprKind::Binary(op2, left2, right2) = left1.kind + && op2.node == BinOpKind::Sub + && check_eq_expr(cx, right1, left2) + && let &Uint(_) = cx.typeck_results().expr_ty(right1).kind() + && check_lit(right2, 1) + && check_lit(right, 0) + { + build_sugg(cx, expr, right1, &mut applicability); + } + + // 0 == a & (a - 1); + if let ExprKind::Binary(op1, left1, right1) = right.kind + && op1.node == BinOpKind::BitAnd + && let ExprKind::Binary(op2, left2, right2) = right1.kind + && op2.node == BinOpKind::Sub + && check_eq_expr(cx, left1, left2) + && let &Uint(_) = cx.typeck_results().expr_ty(left1).kind() + && check_lit(right2, 1) + && check_lit(left, 0) + { + build_sugg(cx, expr, left1, &mut applicability); + } + + // 0 == (a - 1) & a + if let ExprKind::Binary(op1, left1, right1) = right.kind + && op1.node == BinOpKind::BitAnd + && let ExprKind::Binary(op2, left2, right2) = left1.kind + && op2.node == BinOpKind::Sub + && check_eq_expr(cx, right1, left2) + && let &Uint(_) = cx.typeck_results().expr_ty(right1).kind() + && check_lit(right2, 1) + && check_lit(left, 0) + { + build_sugg(cx, expr, right1, &mut applicability); + } + } + } +} + +fn build_sugg(cx: &LateContext<'_>, expr: &Expr<'_>, reciever: &Expr<'_>, applicability: &mut Applicability) { + let snippet = snippet_with_applicability(cx, reciever.span, "..", applicability); + + span_lint_and_sugg( + cx, + MANUAL_IS_POWER_OF_TWO, + expr.span, + "manually reimplementing `is_power_of_two`", + "consider using `.is_power_of_two()`", + format!("{snippet}.is_power_of_two()"), + *applicability, + ); +} + +fn check_lit(expr: &Expr<'_>, expected_num: u128) -> bool { + if let ExprKind::Lit(lit) = expr.kind + && let LitKind::Int(Pu128(num), _) = lit.node + && num == expected_num + { + return true; + } + false +} + +fn check_eq_expr(cx: &LateContext<'_>, lhs: &Expr<'_>, rhs: &Expr<'_>) -> bool { + SpanlessEq::new(cx).eq_expr(lhs, rhs) +} diff --git a/src/tools/clippy/clippy_lints/src/manual_let_else.rs b/src/tools/clippy/clippy_lints/src/manual_let_else.rs index ebebdf679a8..17185df5d76 100644 --- a/src/tools/clippy/clippy_lints/src/manual_let_else.rs +++ b/src/tools/clippy/clippy_lints/src/manual_let_else.rs @@ -1,4 +1,4 @@ -use crate::question_mark::{QuestionMark, QUESTION_MARK}; +use crate::question_mark::{QUESTION_MARK, QuestionMark}; use clippy_config::msrvs; use clippy_config::types::MatchLintBehaviour; use clippy_utils::diagnostics::span_lint_and_then; @@ -12,8 +12,8 @@ use rustc_hir::{Expr, ExprKind, MatchSource, Pat, PatKind, QPath, Stmt, StmtKind use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; -use rustc_span::symbol::{sym, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{Symbol, sym}; use std::slice; declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/manual_main_separator_str.rs b/src/tools/clippy/clippy_lints/src/manual_main_separator_str.rs index 5198d7838a2..85e99a92cf5 100644 --- a/src/tools/clippy/clippy_lints/src/manual_main_separator_str.rs +++ b/src/tools/clippy/clippy_lints/src/manual_main_separator_str.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::{is_trait_method, peel_hir_expr_refs}; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/manual_non_exhaustive.rs b/src/tools/clippy/clippy_lints/src/manual_non_exhaustive.rs index 6b1d90483cc..25868ccae40 100644 --- a/src/tools/clippy/clippy_lints/src/manual_non_exhaustive.rs +++ b/src/tools/clippy/clippy_lints/src/manual_non_exhaustive.rs @@ -1,18 +1,18 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::is_doc_hidden; -use clippy_utils::source::SpanRangeExt; -use rustc_ast::ast::{self, VisibilityKind}; +use clippy_utils::source::snippet_indent; +use itertools::Itertools; use rustc_ast::attr; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res}; -use rustc_hir::{self as hir, Expr, ExprKind, QPath}; -use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintContext}; +use rustc_hir::{Expr, ExprKind, Item, ItemKind, QPath, TyKind, VariantData}; +use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::def_id::{DefId, LocalDefId}; -use rustc_span::{sym, Span}; +use rustc_span::def_id::LocalDefId; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -62,29 +62,13 @@ declare_clippy_lint! { "manual implementations of the non-exhaustive pattern can be simplified using #[non_exhaustive]" } -#[expect(clippy::module_name_repetitions)] -pub struct ManualNonExhaustiveStruct { +pub struct ManualNonExhaustive { msrv: Msrv, -} - -impl ManualNonExhaustiveStruct { - pub fn new(conf: &'static Conf) -> Self { - Self { - msrv: conf.msrv.clone(), - } - } -} - -impl_lint_pass!(ManualNonExhaustiveStruct => [MANUAL_NON_EXHAUSTIVE]); - -#[expect(clippy::module_name_repetitions)] -pub struct ManualNonExhaustiveEnum { - msrv: Msrv, - constructed_enum_variants: FxHashSet<(DefId, DefId)>, + constructed_enum_variants: FxHashSet<LocalDefId>, potential_enums: Vec<(LocalDefId, LocalDefId, Span, Span)>, } -impl ManualNonExhaustiveEnum { +impl ManualNonExhaustive { pub fn new(conf: &'static Conf) -> Self { Self { msrv: conf.msrv.clone(), @@ -94,96 +78,78 @@ impl ManualNonExhaustiveEnum { } } -impl_lint_pass!(ManualNonExhaustiveEnum => [MANUAL_NON_EXHAUSTIVE]); - -impl EarlyLintPass for ManualNonExhaustiveStruct { - fn check_item(&mut self, cx: &EarlyContext<'_>, item: &ast::Item) { - if let ast::ItemKind::Struct(variant_data, _) = &item.kind - && let (fields, delimiter) = match variant_data { - ast::VariantData::Struct { fields, .. } => (&**fields, '{'), - ast::VariantData::Tuple(fields, _) => (&**fields, '('), - ast::VariantData::Unit(_) => return, - } - && fields.len() > 1 - && self.msrv.meets(msrvs::NON_EXHAUSTIVE) - { - let mut iter = fields.iter().filter_map(|f| match f.vis.kind { - VisibilityKind::Public => None, - VisibilityKind::Inherited => Some(Ok(f)), - VisibilityKind::Restricted { .. } => Some(Err(())), - }); - if let Some(Ok(field)) = iter.next() - && iter.next().is_none() - && field.ty.kind.is_unit() - { - span_lint_and_then( - cx, - MANUAL_NON_EXHAUSTIVE, - item.span, - "this seems like a manual implementation of the non-exhaustive pattern", - |diag| { - if !item.attrs.iter().any(|attr| attr.has_name(sym::non_exhaustive)) - && let header_span = cx.sess().source_map().span_until_char(item.span, delimiter) - && let Some(snippet) = header_span.get_source_text(cx) - { - diag.span_suggestion( - header_span, - "add the attribute", - format!("#[non_exhaustive] {snippet}"), - Applicability::Unspecified, - ); - } - diag.span_help(field.span, "remove this field"); - }, - ); - } - } - } - - extract_msrv_attr!(EarlyContext); -} +impl_lint_pass!(ManualNonExhaustive => [MANUAL_NON_EXHAUSTIVE]); -impl<'tcx> LateLintPass<'tcx> for ManualNonExhaustiveEnum { - fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'_>) { - if !self.msrv.meets(msrvs::NON_EXHAUSTIVE) { +impl<'tcx> LateLintPass<'tcx> for ManualNonExhaustive { + fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) { + if !self.msrv.meets(msrvs::NON_EXHAUSTIVE) || !cx.effective_visibilities.is_exported(item.owner_id.def_id) { return; } - if let hir::ItemKind::Enum(def, _) = &item.kind - && def.variants.len() > 1 - { - let mut iter = def.variants.iter().filter_map(|v| { - (matches!(v.data, hir::VariantData::Unit(_, _)) - && is_doc_hidden(cx.tcx.hir().attrs(v.hir_id)) - && !attr::contains_name(cx.tcx.hir().attrs(item.hir_id()), sym::non_exhaustive)) - .then_some((v.def_id, v.span)) - }); - if let Some((id, span)) = iter.next() - && iter.next().is_none() - { - self.potential_enums.push((item.owner_id.def_id, id, item.span, span)); - } + match item.kind { + ItemKind::Enum(def, _) if def.variants.len() > 1 => { + let iter = def.variants.iter().filter_map(|v| { + (matches!(v.data, VariantData::Unit(_, _)) && is_doc_hidden(cx.tcx.hir().attrs(v.hir_id))) + .then_some((v.def_id, v.span)) + }); + if let Ok((id, span)) = iter.exactly_one() + && !attr::contains_name(cx.tcx.hir().attrs(item.hir_id()), sym::non_exhaustive) + { + self.potential_enums.push((item.owner_id.def_id, id, item.span, span)); + } + }, + ItemKind::Struct(variant_data, _) => { + let fields = variant_data.fields(); + let private_fields = fields + .iter() + .filter(|field| !cx.effective_visibilities.is_exported(field.def_id)); + if fields.len() > 1 + && let Ok(field) = private_fields.exactly_one() + && let TyKind::Tup([]) = field.ty.kind + { + span_lint_and_then( + cx, + MANUAL_NON_EXHAUSTIVE, + item.span, + "this seems like a manual implementation of the non-exhaustive pattern", + |diag| { + if let Some(non_exhaustive) = + attr::find_by_name(cx.tcx.hir().attrs(item.hir_id()), sym::non_exhaustive) + { + diag.span_note(non_exhaustive.span, "the struct is already non-exhaustive"); + } else { + let indent = snippet_indent(cx, item.span).unwrap_or_default(); + diag.span_suggestion_verbose( + item.span.shrink_to_lo(), + "use the `#[non_exhaustive]` attribute instead", + format!("#[non_exhaustive]\n{indent}"), + Applicability::MaybeIncorrect, + ); + } + diag.span_help(field.span, "remove this field"); + }, + ); + } + }, + _ => {}, } } fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) { if let ExprKind::Path(QPath::Resolved(None, p)) = &e.kind - && let Res::Def(DefKind::Ctor(CtorOf::Variant, CtorKind::Const), id) = p.res + && let Res::Def(DefKind::Ctor(CtorOf::Variant, CtorKind::Const), ctor_id) = p.res + && let Some(local_ctor) = ctor_id.as_local() { - let variant_id = cx.tcx.parent(id); - let enum_id = cx.tcx.parent(variant_id); - - self.constructed_enum_variants.insert((enum_id, variant_id)); + let variant_id = cx.tcx.local_parent(local_ctor); + self.constructed_enum_variants.insert(variant_id); } } fn check_crate_post(&mut self, cx: &LateContext<'tcx>) { - for &(enum_id, _, enum_span, variant_span) in - self.potential_enums.iter().filter(|&&(enum_id, variant_id, _, _)| { - !self - .constructed_enum_variants - .contains(&(enum_id.to_def_id(), variant_id.to_def_id())) - }) + for &(enum_id, _, enum_span, variant_span) in self + .potential_enums + .iter() + .filter(|(_, variant_id, _, _)| !self.constructed_enum_variants.contains(variant_id)) { let hir_id = cx.tcx.local_def_id_to_hir_id(enum_id); span_lint_hir_and_then( @@ -193,15 +159,13 @@ impl<'tcx> LateLintPass<'tcx> for ManualNonExhaustiveEnum { enum_span, "this seems like a manual implementation of the non-exhaustive pattern", |diag| { - let header_span = cx.sess().source_map().span_until_char(enum_span, '{'); - if let Some(snippet) = header_span.get_source_text(cx) { - diag.span_suggestion( - header_span, - "add the attribute", - format!("#[non_exhaustive] {snippet}"), - Applicability::Unspecified, - ); - } + let indent = snippet_indent(cx, enum_span).unwrap_or_default(); + diag.span_suggestion_verbose( + enum_span.shrink_to_lo(), + "use the `#[non_exhaustive]` attribute instead", + format!("#[non_exhaustive]\n{indent}"), + Applicability::MaybeIncorrect, + ); diag.span_help(variant_span, "remove this variant"); }, ); diff --git a/src/tools/clippy/clippy_lints/src/manual_range_patterns.rs b/src/tools/clippy/clippy_lints/src/manual_range_patterns.rs index 9afb2b5bc84..ffa3eacf354 100644 --- a/src/tools/clippy/clippy_lints/src/manual_range_patterns.rs +++ b/src/tools/clippy/clippy_lints/src/manual_range_patterns.rs @@ -7,7 +7,7 @@ use rustc_hir::{Expr, ExprKind, PatKind, RangeEnd, UnOp}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; -use rustc_span::{Span, DUMMY_SP}; +use rustc_span::{DUMMY_SP, Span}; declare_clippy_lint! { /// ### What it does @@ -77,9 +77,10 @@ impl Num { impl LateLintPass<'_> for ManualRangePatterns { fn check_pat(&mut self, cx: &LateContext<'_>, pat: &'_ rustc_hir::Pat<'_>) { // a pattern like 1 | 2 seems fine, lint if there are at least 3 alternatives - // or at least one range + // or more then one range (exclude triggering on stylistic using OR with one element + // like described https://github.com/rust-lang/rust-clippy/issues/11825) if let PatKind::Or(pats) = pat.kind - && (pats.len() >= 3 || pats.iter().any(|p| matches!(p.kind, PatKind::Range(..)))) + && (pats.len() >= 3 || (pats.len() > 1 && pats.iter().any(|p| matches!(p.kind, PatKind::Range(..))))) && !in_external_macro(cx.sess(), pat.span) { let mut min = Num::dummy(i128::MAX); diff --git a/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs b/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs index 6cf5d272d7d..86293169ea2 100644 --- a/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs +++ b/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, FullInt}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; diff --git a/src/tools/clippy/clippy_lints/src/manual_retain.rs b/src/tools/clippy/clippy_lints/src/manual_retain.rs index a35b0f914e0..a60163be770 100644 --- a/src/tools/clippy/clippy_lints/src/manual_retain.rs +++ b/src/tools/clippy/clippy_lints/src/manual_retain.rs @@ -1,17 +1,17 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; +use clippy_utils::SpanlessEq; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet; use clippy_utils::ty::{get_type_diagnostic_name, is_type_lang_item}; -use clippy_utils::SpanlessEq; use rustc_errors::Applicability; use rustc_hir as hir; -use rustc_hir::def_id::DefId; use rustc_hir::ExprKind::Assign; +use rustc_hir::def_id::DefId; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::{sym, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{Symbol, sym}; const ACCEPTABLE_METHODS: [Symbol; 5] = [ sym::binaryheap_iter, diff --git a/src/tools/clippy/clippy_lints/src/manual_string_new.rs b/src/tools/clippy/clippy_lints/src/manual_string_new.rs index 781db4b97f0..198f7aaddc7 100644 --- a/src/tools/clippy/clippy_lints/src/manual_string_new.rs +++ b/src/tools/clippy/clippy_lints/src/manual_string_new.rs @@ -5,7 +5,7 @@ use rustc_hir::{Expr, ExprKind, PathSegment, QPath, TyKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{sym, symbol, Span}; +use rustc_span::{Span, sym, symbol}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/manual_strip.rs b/src/tools/clippy/clippy_lints/src/manual_strip.rs index 02d433ecc5a..828c5a3f6ff 100644 --- a/src/tools/clippy/clippy_lints/src/manual_strip.rs +++ b/src/tools/clippy/clippy_lints/src/manual_strip.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; @@ -8,13 +8,13 @@ use clippy_utils::{eq_expr_value, higher}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::def::Res; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BinOpKind, BorrowKind, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; use rustc_span::source_map::Spanned; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::iter; declare_clippy_lint! { @@ -203,7 +203,7 @@ fn find_stripping<'tcx>( results: Vec<Span>, } - impl<'a, 'tcx> Visitor<'tcx> for StrippingFinder<'a, 'tcx> { + impl<'tcx> Visitor<'tcx> for StrippingFinder<'_, 'tcx> { fn visit_expr(&mut self, ex: &'tcx Expr<'_>) { if is_ref_str(self.cx, ex) && let unref = peel_ref(ex) diff --git a/src/tools/clippy/clippy_lints/src/map_unit_fn.rs b/src/tools/clippy/clippy_lints/src/map_unit_fn.rs index 2db71b1f7a3..3221a04d2d0 100644 --- a/src/tools/clippy/clippy_lints/src/map_unit_fn.rs +++ b/src/tools/clippy/clippy_lints/src/map_unit_fn.rs @@ -7,7 +7,7 @@ use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, Ty}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -251,7 +251,7 @@ fn lint_map_unit_fn( } } -impl<'tcx> LateLintPass<'tcx> for MapUnit { +impl LateLintPass<'_> for MapUnit { fn check_stmt(&mut self, cx: &LateContext<'_>, stmt: &hir::Stmt<'_>) { if let hir::StmtKind::Semi(expr) = stmt.kind && !stmt.span.from_expansion() diff --git a/src/tools/clippy/clippy_lints/src/matches/collapsible_match.rs b/src/tools/clippy/clippy_lints/src/matches/collapsible_match.rs index b666e77c09e..50e6dfc6298 100644 --- a/src/tools/clippy/clippy_lints/src/matches/collapsible_match.rs +++ b/src/tools/clippy/clippy_lints/src/matches/collapsible_match.rs @@ -4,7 +4,7 @@ use clippy_utils::higher::IfLetOrMatch; use clippy_utils::source::snippet; use clippy_utils::visitors::is_local_used; use clippy_utils::{ - is_res_lang_ctor, is_unit_expr, path_to_local, peel_blocks_with_stmt, peel_ref_operators, SpanlessEq, + SpanlessEq, is_res_lang_ctor, is_unit_expr, path_to_local, peel_blocks_with_stmt, peel_ref_operators, }; use rustc_errors::MultiSpan; use rustc_hir::LangItem::OptionNone; @@ -12,7 +12,7 @@ use rustc_hir::{Arm, Expr, HirId, Pat, PatKind}; use rustc_lint::LateContext; use rustc_span::Span; -use super::{pat_contains_disallowed_or, COLLAPSIBLE_MATCH}; +use super::{COLLAPSIBLE_MATCH, pat_contains_disallowed_or}; pub(super) fn check_match<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>], msrv: &Msrv) { if let Some(els_arm) = arms.iter().rfind(|arm| arm_is_wild_like(cx, arm)) { diff --git a/src/tools/clippy/clippy_lints/src/matches/manual_filter.rs b/src/tools/clippy/clippy_lints/src/matches/manual_filter.rs index 619ec83127a..cfa054706d6 100644 --- a/src/tools/clippy/clippy_lints/src/matches/manual_filter.rs +++ b/src/tools/clippy/clippy_lints/src/matches/manual_filter.rs @@ -6,10 +6,10 @@ use clippy_utils::{is_res_lang_ctor, path_res, path_to_local_id}; use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_hir::{Arm, Expr, ExprKind, HirId, Pat, PatKind}; use rustc_lint::LateContext; -use rustc_span::{sym, SyntaxContext}; +use rustc_span::{SyntaxContext, sym}; -use super::manual_utils::{check_with, SomeExpr}; use super::MANUAL_FILTER; +use super::manual_utils::{SomeExpr, check_with}; // Function called on the <expr> of `[&+]Some((ref | ref mut) x) => <expr>` // Need to check if it's of the form `<expr>=if <cond> {<then_expr>} else {<else_expr>}` diff --git a/src/tools/clippy/clippy_lints/src/matches/manual_map.rs b/src/tools/clippy/clippy_lints/src/matches/manual_map.rs index ed3d8b09fdc..de57d1eee92 100644 --- a/src/tools/clippy/clippy_lints/src/matches/manual_map.rs +++ b/src/tools/clippy/clippy_lints/src/matches/manual_map.rs @@ -1,5 +1,5 @@ -use super::manual_utils::{check_with, SomeExpr}; use super::MANUAL_MAP; +use super::manual_utils::{SomeExpr, check_with}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::{is_res_lang_ctor, path_res}; diff --git a/src/tools/clippy/clippy_lints/src/matches/manual_unwrap_or.rs b/src/tools/clippy/clippy_lints/src/matches/manual_unwrap_or.rs index d5d83df9347..59d37520011 100644 --- a/src/tools/clippy/clippy_lints/src/matches/manual_unwrap_or.rs +++ b/src/tools/clippy/clippy_lints/src/matches/manual_unwrap_or.rs @@ -1,12 +1,12 @@ use clippy_utils::consts::ConstEvalCtxt; use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{indent_of, reindent_multiline, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, indent_of, reindent_multiline}; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::usage::contains_return_break_continue_macro; use clippy_utils::{is_res_lang_ctor, path_to_local_id, peel_blocks, sugg}; use rustc_errors::Applicability; -use rustc_hir::def::{DefKind, Res}; use rustc_hir::LangItem::{OptionNone, ResultErr}; +use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Arm, Expr, Pat, PatKind}; use rustc_lint::LateContext; use rustc_middle::ty::Ty; diff --git a/src/tools/clippy/clippy_lints/src/matches/manual_utils.rs b/src/tools/clippy/clippy_lints/src/matches/manual_utils.rs index be80aebed6d..d38560998a5 100644 --- a/src/tools/clippy/clippy_lints/src/matches/manual_utils.rs +++ b/src/tools/clippy/clippy_lints/src/matches/manual_utils.rs @@ -4,16 +4,16 @@ use clippy_utils::source::{snippet_with_applicability, snippet_with_context}; use clippy_utils::sugg::Sugg; use clippy_utils::ty::{is_copy, is_type_diagnostic_item, peel_mid_ty_refs_is_mutable, type_is_unsafe_function}; use clippy_utils::{ - can_move_expr_to_closure, is_else_clause, is_lint_allowed, is_res_lang_ctor, path_res, path_to_local_id, - peel_blocks, peel_hir_expr_refs, peel_hir_expr_while, CaptureKind, + CaptureKind, can_move_expr_to_closure, is_else_clause, is_lint_allowed, is_res_lang_ctor, path_res, + path_to_local_id, peel_blocks, peel_hir_expr_refs, peel_hir_expr_while, }; use rustc_ast::util::parser::PREC_UNAMBIGUOUS; use rustc_errors::Applicability; -use rustc_hir::def::Res; use rustc_hir::LangItem::{OptionNone, OptionSome}; +use rustc_hir::def::Res; use rustc_hir::{BindingMode, Expr, ExprKind, HirId, Mutability, Pat, PatKind, Path, QPath}; use rustc_lint::LateContext; -use rustc_span::{sym, SyntaxContext}; +use rustc_span::{SyntaxContext, sym}; #[expect(clippy::too_many_arguments)] #[expect(clippy::too_many_lines)] diff --git a/src/tools/clippy/clippy_lints/src/matches/match_same_arms.rs b/src/tools/clippy/clippy_lints/src/matches/match_same_arms.rs index da8c918a62b..f9ffbc5dc0b 100644 --- a/src/tools/clippy/clippy_lints/src/matches/match_same_arms.rs +++ b/src/tools/clippy/clippy_lints/src/matches/match_same_arms.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::source::snippet_with_applicability; -use clippy_utils::{is_lint_allowed, path_to_local, search_same, SpanlessEq, SpanlessHash}; +use clippy_utils::{SpanlessEq, SpanlessHash, is_lint_allowed, path_to_local, search_same}; use core::cmp::Ordering; use core::{iter, slice}; use rustc_arena::DroplessArena; diff --git a/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs b/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs index 322e9c3ebe5..463aa602bc8 100644 --- a/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs +++ b/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs @@ -2,12 +2,12 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::ty::is_type_lang_item; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Arm, Expr, ExprKind, LangItem, PatKind}; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::symbol::Symbol; use rustc_span::Span; +use rustc_span::symbol::Symbol; use super::MATCH_STR_CASE_MISMATCH; @@ -40,7 +40,7 @@ struct MatchExprVisitor<'a, 'tcx> { case_method: Option<CaseMethod>, } -impl<'a, 'tcx> Visitor<'tcx> for MatchExprVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for MatchExprVisitor<'_, 'tcx> { fn visit_expr(&mut self, ex: &'tcx Expr<'_>) { match ex.kind { ExprKind::MethodCall(segment, receiver, [], _) if self.case_altered(segment.ident.as_str(), receiver) => {}, @@ -49,7 +49,7 @@ impl<'a, 'tcx> Visitor<'tcx> for MatchExprVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> MatchExprVisitor<'a, 'tcx> { +impl MatchExprVisitor<'_, '_> { fn case_altered(&mut self, segment_ident: &str, receiver: &Expr<'_>) -> bool { if let Some(case_method) = get_case_method(segment_ident) { let ty = self.cx.typeck_results().expr_ty(receiver).peel_refs(); diff --git a/src/tools/clippy/clippy_lints/src/matches/mod.rs b/src/tools/clippy/clippy_lints/src/matches/mod.rs index cf5377e0725..28adcc2f227 100644 --- a/src/tools/clippy/clippy_lints/src/matches/mod.rs +++ b/src/tools/clippy/clippy_lints/src/matches/mod.rs @@ -24,8 +24,8 @@ mod single_match; mod try_err; mod wild_in_or_pats; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::source::walk_span_to_context; use clippy_utils::{higher, is_direct_expn_of, is_in_const_context, is_span_match, span_contains_cfg}; use rustc_hir::{Arm, Expr, ExprKind, LetStmt, MatchSource, Pat, PatKind}; @@ -1045,7 +1045,7 @@ impl<'tcx> LateLintPass<'tcx> for Matches { if !from_expansion { // These don't depend on a relationship between multiple arms match_wild_err_arm::check(cx, ex, arms); - wild_in_or_pats::check(cx, arms); + wild_in_or_pats::check(cx, ex, arms); } if let MatchSource::TryDesugar(_) = source { diff --git a/src/tools/clippy/clippy_lints/src/matches/overlapping_arms.rs b/src/tools/clippy/clippy_lints/src/matches/overlapping_arms.rs index 71f211be925..856311899f2 100644 --- a/src/tools/clippy/clippy_lints/src/matches/overlapping_arms.rs +++ b/src/tools/clippy/clippy_lints/src/matches/overlapping_arms.rs @@ -1,4 +1,4 @@ -use clippy_utils::consts::{mir_to_const, ConstEvalCtxt, FullInt}; +use clippy_utils::consts::{ConstEvalCtxt, FullInt, mir_to_const}; use clippy_utils::diagnostics::span_lint_and_note; use core::cmp::Ordering; use rustc_hir::{Arm, Expr, PatKind, RangeEnd}; @@ -96,13 +96,13 @@ where #[derive(Copy, Clone, Debug, Eq, PartialEq)] struct RangeBound<'a, T>(T, BoundKind, &'a SpannedRange<T>); - impl<'a, T: Copy + Ord> PartialOrd for RangeBound<'a, T> { + impl<T: Copy + Ord> PartialOrd for RangeBound<'_, T> { fn partial_cmp(&self, other: &Self) -> Option<Ordering> { Some(self.cmp(other)) } } - impl<'a, T: Copy + Ord> Ord for RangeBound<'a, T> { + impl<T: Copy + Ord> Ord for RangeBound<'_, T> { fn cmp(&self, RangeBound(other_value, other_kind, _): &Self) -> Ordering { let RangeBound(self_value, self_kind, _) = *self; (self_value, self_kind).cmp(&(*other_value, *other_kind)) diff --git a/src/tools/clippy/clippy_lints/src/matches/redundant_guards.rs b/src/tools/clippy/clippy_lints/src/matches/redundant_guards.rs index 8222c3057f7..564c598a334 100644 --- a/src/tools/clippy/clippy_lints/src/matches/redundant_guards.rs +++ b/src/tools/clippy/clippy_lints/src/matches/redundant_guards.rs @@ -10,11 +10,11 @@ use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Arm, BinOpKind, Expr, ExprKind, MatchSource, Node, PatKind, UnOp}; use rustc_lint::LateContext; use rustc_span::symbol::Ident; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; use std::borrow::Cow; use std::ops::ControlFlow; -use super::{pat_contains_disallowed_or, REDUNDANT_GUARDS}; +use super::{REDUNDANT_GUARDS, pat_contains_disallowed_or}; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'tcx>], msrv: &Msrv) { for outer_arm in arms { diff --git a/src/tools/clippy/clippy_lints/src/matches/redundant_pattern_match.rs b/src/tools/clippy/clippy_lints/src/matches/redundant_pattern_match.rs index 0e4b2d9d34a..b646e87a439 100644 --- a/src/tools/clippy/clippy_lints/src/matches/redundant_pattern_match.rs +++ b/src/tools/clippy/clippy_lints/src/matches/redundant_pattern_match.rs @@ -1,18 +1,18 @@ use super::REDUNDANT_PATTERN_MATCHING; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::source::{snippet, walk_span_to_context}; -use clippy_utils::sugg::{make_unop, Sugg}; +use clippy_utils::sugg::{Sugg, make_unop}; use clippy_utils::ty::{is_type_diagnostic_item, needs_ordered_drop}; use clippy_utils::visitors::{any_temporaries_need_ordered_drop, for_each_expr_without_closures}; use clippy_utils::{higher, is_expn_of, is_trait_method}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; -use rustc_hir::def::{DefKind, Res}; use rustc_hir::LangItem::{self, OptionNone, OptionSome, PollPending, PollReady, ResultErr, ResultOk}; +use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Arm, Expr, ExprKind, Node, Pat, PatKind, QPath, UnOp}; use rustc_lint::LateContext; use rustc_middle::ty::{self, GenericArgKind, Ty}; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; use std::fmt::Write; use std::ops::ControlFlow; diff --git a/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs b/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs index 9c2f42d2187..7372f52e1e5 100644 --- a/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs +++ b/src/tools/clippy/clippy_lints/src/matches/significant_drop_in_scrutinee.rs @@ -8,7 +8,7 @@ use clippy_utils::{get_attr, is_lint_allowed}; use itertools::Itertools; use rustc_ast::Mutability; use rustc_errors::{Applicability, Diag}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Arm, Expr, ExprKind, MatchSource}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::ty::{GenericArgKind, Region, RegionKind, Ty, TyCtxt, TypeVisitable, TypeVisitor}; @@ -424,7 +424,7 @@ fn ty_has_erased_regions(ty: Ty<'_>) -> bool { ty.visit_with(&mut V).is_break() } -impl<'a, 'tcx> Visitor<'tcx> for SigDropHelper<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for SigDropHelper<'_, 'tcx> { fn visit_expr(&mut self, ex: &'tcx Expr<'_>) { // We've emitted a lint on some neighborhood expression. That lint will suggest to move out the // _parent_ expression (not the expression itself). Since we decide to move out the parent @@ -495,7 +495,7 @@ fn has_significant_drop_in_arms<'tcx>(cx: &LateContext<'tcx>, arms: &[&'tcx Expr helper.found_sig_drop_spans } -impl<'a, 'tcx> Visitor<'tcx> for ArmSigDropHelper<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for ArmSigDropHelper<'_, 'tcx> { fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) { if self.sig_drop_checker.is_sig_drop_expr(ex) { self.found_sig_drop_spans.insert(ex.span); diff --git a/src/tools/clippy/clippy_lints/src/matches/single_match.rs b/src/tools/clippy/clippy_lints/src/matches/single_match.rs index b6930f7b9d1..2eda238ae8c 100644 --- a/src/tools/clippy/clippy_lints/src/matches/single_match.rs +++ b/src/tools/clippy/clippy_lints/src/matches/single_match.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{expr_block, snippet, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, expr_block, snippet, snippet_block_with_context}; use clippy_utils::ty::implements_trait; use clippy_utils::{ is_lint_allowed, is_unit_expr, peel_blocks, peel_hir_pat_refs, peel_middle_ty_refs, peel_n_hir_expr_refs, @@ -8,11 +8,11 @@ use core::ops::ControlFlow; use rustc_arena::DroplessArena; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::intravisit::{walk_pat, Visitor}; -use rustc_hir::{Arm, Expr, ExprKind, HirId, Pat, PatKind, QPath}; +use rustc_hir::intravisit::{Visitor, walk_pat}; +use rustc_hir::{Arm, Expr, ExprKind, HirId, Node, Pat, PatKind, QPath, StmtKind}; use rustc_lint::LateContext; use rustc_middle::ty::{self, AdtDef, ParamEnv, TyCtxt, TypeckResults, VariantDef}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::{MATCH_BOOL, SINGLE_MATCH, SINGLE_MATCH_ELSE}; @@ -91,6 +91,29 @@ fn report_single_pattern(cx: &LateContext<'_>, ex: &Expr<'_>, arm: &Arm<'_>, exp format!(" else {}", expr_block(cx, els, ctxt, "..", Some(expr.span), &mut app)) }); + if snippet(cx, ex.span, "..") == snippet(cx, arm.pat.span, "..") { + let msg = "this pattern is irrefutable, `match` is useless"; + let (sugg, help) = if is_unit_expr(arm.body) { + (String::new(), "`match` expression can be removed") + } else { + let mut sugg = snippet_block_with_context(cx, arm.body.span, ctxt, "..", Some(expr.span), &mut app) + .0 + .to_string(); + if let Node::Stmt(stmt) = cx.tcx.parent_hir_node(expr.hir_id) + && let StmtKind::Expr(_) = stmt.kind + && match arm.body.kind { + ExprKind::Block(block, _) => block.span.from_expansion(), + _ => true, + } + { + sugg.push(';'); + } + (sugg, "try") + }; + span_lint_and_sugg(cx, lint, expr.span, msg, help, sugg.to_string(), app); + return; + } + let (pat, pat_ref_count) = peel_hir_pat_refs(arm.pat); let (msg, sugg) = if let PatKind::Path(_) | PatKind::Lit(_) = pat.kind && let (ty, ty_ref_count) = peel_middle_ty_refs(cx.typeck_results().expr_ty(ex)) diff --git a/src/tools/clippy/clippy_lints/src/matches/wild_in_or_pats.rs b/src/tools/clippy/clippy_lints/src/matches/wild_in_or_pats.rs index 459513e65bf..390ba889fd2 100644 --- a/src/tools/clippy/clippy_lints/src/matches/wild_in_or_pats.rs +++ b/src/tools/clippy/clippy_lints/src/matches/wild_in_or_pats.rs @@ -1,11 +1,19 @@ use clippy_utils::diagnostics::span_lint_and_help; -use clippy_utils::is_wild; -use rustc_hir::{Arm, PatKind}; +use clippy_utils::{has_non_exhaustive_attr, is_wild}; +use rustc_hir::{Arm, Expr, PatKind}; use rustc_lint::LateContext; +use rustc_middle::ty; use super::WILDCARD_IN_OR_PATTERNS; -pub(crate) fn check(cx: &LateContext<'_>, arms: &[Arm<'_>]) { +pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arms: &[Arm<'_>]) { + // first check if we are matching on an enum that has the non_exhaustive attribute + let ty = cx.typeck_results().expr_ty(expr).peel_refs(); + if let ty::Adt(adt_def, _) = ty.kind() + && has_non_exhaustive_attr(cx.tcx, *adt_def) + { + return; + }; for arm in arms { if let PatKind::Or(fields) = arm.pat.kind { // look for multiple fields in this arm that contains at least one Wild pattern diff --git a/src/tools/clippy/clippy_lints/src/mem_replace.rs b/src/tools/clippy/clippy_lints/src/mem_replace.rs index 72a5945ad9b..146748734cf 100644 --- a/src/tools/clippy/clippy_lints/src/mem_replace.rs +++ b/src/tools/clippy/clippy_lints/src/mem_replace.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg, span_lint_and_then}; use clippy_utils::source::{snippet, snippet_with_applicability}; use clippy_utils::sugg::Sugg; @@ -13,8 +13,8 @@ use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/methods/bind_instead_of_map.rs b/src/tools/clippy/clippy_lints/src/methods/bind_instead_of_map.rs index 2a8a5fcc3b6..91a5de16e96 100644 --- a/src/tools/clippy/clippy_lints/src/methods/bind_instead_of_map.rs +++ b/src/tools/clippy/clippy_lints/src/methods/bind_instead_of_map.rs @@ -1,4 +1,4 @@ -use super::{contains_return, BIND_INSTEAD_OF_MAP}; +use super::{BIND_INSTEAD_OF_MAP, contains_return}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::peel_blocks; use clippy_utils::source::{snippet, snippet_with_context}; diff --git a/src/tools/clippy/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs b/src/tools/clippy/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs index 740cce0a6c2..76bdbe55e2f 100644 --- a/src/tools/clippy/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs +++ b/src/tools/clippy/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs @@ -1,12 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::{indent_of, reindent_multiline, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, indent_of, reindent_multiline}; use clippy_utils::ty::is_type_lang_item; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, LangItem}; use rustc_lint::LateContext; -use rustc_span::source_map::Spanned; use rustc_span::Span; +use rustc_span::source_map::Spanned; use super::CASE_SENSITIVE_FILE_EXTENSION_COMPARISONS; diff --git a/src/tools/clippy/clippy_lints/src/methods/clear_with_drain.rs b/src/tools/clippy/clippy_lints/src/methods/clear_with_drain.rs index 5389861245a..6e24cabca8b 100644 --- a/src/tools/clippy/clippy_lints/src/methods/clear_with_drain.rs +++ b/src/tools/clippy/clippy_lints/src/methods/clear_with_drain.rs @@ -4,8 +4,8 @@ use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, LangItem, QPath}; use rustc_lint::LateContext; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use super::CLEAR_WITH_DRAIN; diff --git a/src/tools/clippy/clippy_lints/src/methods/clone_on_copy.rs b/src/tools/clippy/clippy_lints/src/methods/clone_on_copy.rs index e7a2060be04..79a473e0e6f 100644 --- a/src/tools/clippy/clippy_lints/src/methods/clone_on_copy.rs +++ b/src/tools/clippy/clippy_lints/src/methods/clone_on_copy.rs @@ -7,7 +7,7 @@ use rustc_lint::LateContext; use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::print::with_forced_trimmed_paths; use rustc_middle::ty::{self}; -use rustc_span::symbol::{sym, Symbol}; +use rustc_span::symbol::{Symbol, sym}; use super::CLONE_ON_COPY; diff --git a/src/tools/clippy/clippy_lints/src/methods/clone_on_ref_ptr.rs b/src/tools/clippy/clippy_lints/src/methods/clone_on_ref_ptr.rs index e0826b53004..96e2de0dc1c 100644 --- a/src/tools/clippy/clippy_lints/src/methods/clone_on_ref_ptr.rs +++ b/src/tools/clippy/clippy_lints/src/methods/clone_on_ref_ptr.rs @@ -4,7 +4,7 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::symbol::{sym, Symbol}; +use rustc_span::symbol::{Symbol, sym}; use super::CLONE_ON_REF_PTR; diff --git a/src/tools/clippy/clippy_lints/src/methods/cloned_instead_of_copied.rs b/src/tools/clippy/clippy_lints/src/methods/cloned_instead_of_copied.rs index fcafa162236..fa04f74eec1 100644 --- a/src/tools/clippy/clippy_lints/src/methods/cloned_instead_of_copied.rs +++ b/src/tools/clippy/clippy_lints/src/methods/cloned_instead_of_copied.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::CLONED_INSTEAD_OF_COPIED; diff --git a/src/tools/clippy/clippy_lints/src/methods/collapsible_str_replace.rs b/src/tools/clippy/clippy_lints/src/methods/collapsible_str_replace.rs index 1fab6c0e499..f7bf8764bde 100644 --- a/src/tools/clippy/clippy_lints/src/methods/collapsible_str_replace.rs +++ b/src/tools/clippy/clippy_lints/src/methods/collapsible_str_replace.rs @@ -8,7 +8,7 @@ use rustc_hir as hir; use rustc_lint::LateContext; use std::collections::VecDeque; -use super::{method_call, COLLAPSIBLE_STR_REPLACE}; +use super::{COLLAPSIBLE_STR_REPLACE, method_call}; pub(super) fn check<'tcx>( cx: &LateContext<'tcx>, diff --git a/src/tools/clippy/clippy_lints/src/methods/drain_collect.rs b/src/tools/clippy/clippy_lints/src/methods/drain_collect.rs index 56171a13452..10360b4817b 100644 --- a/src/tools/clippy/clippy_lints/src/methods/drain_collect.rs +++ b/src/tools/clippy/clippy_lints/src/methods/drain_collect.rs @@ -8,7 +8,7 @@ use rustc_hir::{Expr, ExprKind, LangItem, Path, QPath}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_middle::ty::Ty; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; /// Checks if both types match the given diagnostic item, e.g.: /// diff --git a/src/tools/clippy/clippy_lints/src/methods/err_expect.rs b/src/tools/clippy/clippy_lints/src/methods/err_expect.rs index dc978c8a584..3b1adb16b80 100644 --- a/src/tools/clippy/clippy_lints/src/methods/err_expect.rs +++ b/src/tools/clippy/clippy_lints/src/methods/err_expect.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_middle::ty::Ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; pub(super) fn check( cx: &LateContext<'_>, diff --git a/src/tools/clippy/clippy_lints/src/methods/expect_fun_call.rs b/src/tools/clippy/clippy_lints/src/methods/expect_fun_call.rs index c9f56e1d980..2922086522c 100644 --- a/src/tools/clippy/clippy_lints/src/methods/expect_fun_call.rs +++ b/src/tools/clippy/clippy_lints/src/methods/expect_fun_call.rs @@ -1,13 +1,13 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::macros::{format_args_inputs_span, root_macro_call_first_node, FormatArgsStorage}; +use clippy_utils::macros::{FormatArgsStorage, format_args_inputs_span, root_macro_call_first_node}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use std::borrow::Cow; use super::EXPECT_FUN_CALL; diff --git a/src/tools/clippy/clippy_lints/src/methods/filetype_is_file.rs b/src/tools/clippy/clippy_lints/src/methods/filetype_is_file.rs index 2ab0401947c..35008c39c08 100644 --- a/src/tools/clippy/clippy_lints/src/methods/filetype_is_file.rs +++ b/src/tools/clippy/clippy_lints/src/methods/filetype_is_file.rs @@ -3,7 +3,7 @@ use clippy_utils::get_parent_expr; use clippy_utils::ty::is_type_diagnostic_item; use rustc_hir as hir; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::FILETYPE_IS_FILE; diff --git a/src/tools/clippy/clippy_lints/src/methods/filter_map.rs b/src/tools/clippy/clippy_lints/src/methods/filter_map.rs index 02a11257007..06482a743dd 100644 --- a/src/tools/clippy/clippy_lints/src/methods/filter_map.rs +++ b/src/tools/clippy/clippy_lints/src/methods/filter_map.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::macros::{is_panic, matching_root_macro_call, root_macro_call}; use clippy_utils::source::{indent_of, reindent_multiline, snippet}; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::{higher, is_trait_method, path_to_local_id, peel_blocks, SpanlessEq}; +use clippy_utils::{SpanlessEq, higher, is_trait_method, path_to_local_id, peel_blocks}; use hir::{Body, HirId, MatchSource, Pat}; use rustc_errors::Applicability; use rustc_hir as hir; @@ -10,8 +10,8 @@ use rustc_hir::def::Res; use rustc_hir::{Closure, Expr, ExprKind, PatKind, PathSegment, QPath, UnOp}; use rustc_lint::LateContext; use rustc_middle::ty::adjustment::Adjust; -use rustc_span::symbol::{sym, Ident, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{Ident, Symbol, sym}; use std::borrow::Cow; use super::{MANUAL_FILTER_MAP, MANUAL_FIND_MAP, OPTION_FILTER_MAP, RESULT_FILTER_MAP}; diff --git a/src/tools/clippy/clippy_lints/src/methods/filter_map_bool_then.rs b/src/tools/clippy/clippy_lints/src/methods/filter_map_bool_then.rs index 77a62fbb4fb..129e6925428 100644 --- a/src/tools/clippy/clippy_lints/src/methods/filter_map_bool_then.rs +++ b/src/tools/clippy/clippy_lints/src/methods/filter_map_bool_then.rs @@ -7,9 +7,9 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; -use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::Binder; -use rustc_span::{sym, Span}; +use rustc_middle::ty::adjustment::Adjust; +use rustc_span::{Span, sym}; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, arg: &Expr<'_>, call_span: Span) { if !in_external_macro(cx.sess(), expr.span) diff --git a/src/tools/clippy/clippy_lints/src/methods/filter_map_identity.rs b/src/tools/clippy/clippy_lints/src/methods/filter_map_identity.rs index 999df875c75..cf7f276dabb 100644 --- a/src/tools/clippy/clippy_lints/src/methods/filter_map_identity.rs +++ b/src/tools/clippy/clippy_lints/src/methods/filter_map_identity.rs @@ -3,7 +3,7 @@ use clippy_utils::{is_expr_identity_function, is_expr_untyped_identity_function, use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::FILTER_MAP_IDENTITY; diff --git a/src/tools/clippy/clippy_lints/src/methods/flat_map_identity.rs b/src/tools/clippy/clippy_lints/src/methods/flat_map_identity.rs index 651ea34f9d0..0c2ecfbc8ff 100644 --- a/src/tools/clippy/clippy_lints/src/methods/flat_map_identity.rs +++ b/src/tools/clippy/clippy_lints/src/methods/flat_map_identity.rs @@ -3,7 +3,7 @@ use clippy_utils::{is_expr_untyped_identity_function, is_trait_method}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::FLAT_MAP_IDENTITY; diff --git a/src/tools/clippy/clippy_lints/src/methods/flat_map_option.rs b/src/tools/clippy/clippy_lints/src/methods/flat_map_option.rs index 0a4a381b861..3242dcadb70 100644 --- a/src/tools/clippy/clippy_lints/src/methods/flat_map_option.rs +++ b/src/tools/clippy/clippy_lints/src/methods/flat_map_option.rs @@ -4,7 +4,7 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::FLAT_MAP_OPTION; use clippy_utils::ty::is_type_diagnostic_item; diff --git a/src/tools/clippy/clippy_lints/src/methods/get_last_with_len.rs b/src/tools/clippy/clippy_lints/src/methods/get_last_with_len.rs index 62037651134..5f6fb4c821d 100644 --- a/src/tools/clippy/clippy_lints/src/methods/get_last_with_len.rs +++ b/src/tools/clippy/clippy_lints/src/methods/get_last_with_len.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; -use clippy_utils::{is_integer_literal, SpanlessEq}; +use clippy_utils::{SpanlessEq, is_integer_literal}; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/methods/inefficient_to_string.rs b/src/tools/clippy/clippy_lints/src/methods/inefficient_to_string.rs index 230a8eb2ec4..4ed7de81ea3 100644 --- a/src/tools/clippy/clippy_lints/src/methods/inefficient_to_string.rs +++ b/src/tools/clippy/clippy_lints/src/methods/inefficient_to_string.rs @@ -5,7 +5,7 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; use rustc_middle::ty::{self, Ty}; -use rustc_span::symbol::{sym, Symbol}; +use rustc_span::symbol::{Symbol, sym}; use super::INEFFICIENT_TO_STRING; diff --git a/src/tools/clippy/clippy_lints/src/methods/inspect_for_each.rs b/src/tools/clippy/clippy_lints/src/methods/inspect_for_each.rs index ad4b6fa130e..3706f3b670b 100644 --- a/src/tools/clippy/clippy_lints/src/methods/inspect_for_each.rs +++ b/src/tools/clippy/clippy_lints/src/methods/inspect_for_each.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::is_trait_method; use rustc_hir as hir; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::INSPECT_FOR_EACH; diff --git a/src/tools/clippy/clippy_lints/src/methods/into_iter_on_ref.rs b/src/tools/clippy/clippy_lints/src/methods/into_iter_on_ref.rs index bbc7ce8d78a..bedeb63367d 100644 --- a/src/tools/clippy/clippy_lints/src/methods/into_iter_on_ref.rs +++ b/src/tools/clippy/clippy_lints/src/methods/into_iter_on_ref.rs @@ -5,8 +5,8 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; use rustc_middle::ty::{self, Ty}; -use rustc_span::symbol::{sym, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{Symbol, sym}; use super::INTO_ITER_ON_REF; diff --git a/src/tools/clippy/clippy_lints/src/methods/iter_filter.rs b/src/tools/clippy/clippy_lints/src/methods/iter_filter.rs index b93d51eac64..f6612c984a7 100644 --- a/src/tools/clippy/clippy_lints/src/methods/iter_filter.rs +++ b/src/tools/clippy/clippy_lints/src/methods/iter_filter.rs @@ -10,8 +10,8 @@ use clippy_utils::{get_parent_expr, is_trait_method, peel_blocks, span_contains_ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::QPath; -use rustc_span::symbol::{sym, Ident, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{Ident, Symbol, sym}; use std::borrow::Cow; /// diff --git a/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs b/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs index 33de3b87abc..390dd24b505 100644 --- a/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs +++ b/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs @@ -14,7 +14,6 @@ use rustc_span::sym; /// - `hashmap.into_iter().map(|(_, v)| v)` /// /// on `HashMaps` and `BTreeMaps` in std - pub(super) fn check<'tcx>( cx: &LateContext<'tcx>, map_type: &'tcx str, // iter / into_iter diff --git a/src/tools/clippy/clippy_lints/src/methods/iter_nth.rs b/src/tools/clippy/clippy_lints/src/methods/iter_nth.rs index e31fa2f777d..82bda5d9512 100644 --- a/src/tools/clippy/clippy_lints/src/methods/iter_nth.rs +++ b/src/tools/clippy/clippy_lints/src/methods/iter_nth.rs @@ -3,8 +3,8 @@ use clippy_utils::ty::get_type_diagnostic_name; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use super::ITER_NTH; diff --git a/src/tools/clippy/clippy_lints/src/methods/iter_on_single_or_empty_collections.rs b/src/tools/clippy/clippy_lints/src/methods/iter_on_single_or_empty_collections.rs index 7f6b666e434..9d562f5e51d 100644 --- a/src/tools/clippy/clippy_lints/src/methods/iter_on_single_or_empty_collections.rs +++ b/src/tools/clippy/clippy_lints/src/methods/iter_on_single_or_empty_collections.rs @@ -5,9 +5,9 @@ use clippy_utils::source::snippet; use clippy_utils::{get_expr_use_or_unification_node, is_res_lang_ctor, path_res, std_or_core}; use rustc_errors::Applicability; +use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_hir::def_id::DefId; use rustc_hir::hir_id::HirId; -use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_hir::{Expr, ExprKind, Node}; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/methods/iter_with_drain.rs b/src/tools/clippy/clippy_lints/src/methods/iter_with_drain.rs index 1378a07cbc4..16305871337 100644 --- a/src/tools/clippy/clippy_lints/src/methods/iter_with_drain.rs +++ b/src/tools/clippy/clippy_lints/src/methods/iter_with_drain.rs @@ -3,8 +3,8 @@ use clippy_utils::is_range_full; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::LateContext; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use super::ITER_WITH_DRAIN; diff --git a/src/tools/clippy/clippy_lints/src/methods/join_absolute_paths.rs b/src/tools/clippy/clippy_lints/src/methods/join_absolute_paths.rs index 2dad7fcf3c1..2ad070793cb 100644 --- a/src/tools/clippy/clippy_lints/src/methods/join_absolute_paths.rs +++ b/src/tools/clippy/clippy_lints/src/methods/join_absolute_paths.rs @@ -6,8 +6,8 @@ use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use super::JOIN_ABSOLUTE_PATHS; diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_c_str_literals.rs b/src/tools/clippy/clippy_lints/src/methods/manual_c_str_literals.rs index cb9fb373c10..96af9db1af7 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_c_str_literals.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_c_str_literals.rs @@ -6,7 +6,7 @@ use rustc_ast::{LitKind, StrStyle}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, Node, QPath, TyKind}; use rustc_lint::LateContext; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; use super::MANUAL_C_STR_LITERALS; diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_inspect.rs b/src/tools/clippy/clippy_lints/src/methods/manual_inspect.rs index cac2e11f591..64c19c327b2 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_inspect.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_inspect.rs @@ -3,13 +3,13 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{IntoSpan, SpanRangeExt}; use clippy_utils::ty::get_field_by_name; use clippy_utils::visitors::{for_each_expr, for_each_expr_without_closures}; -use clippy_utils::{expr_use_ctxt, is_diag_item_method, is_diag_trait_item, path_to_local_id, ExprUseNode}; +use clippy_utils::{ExprUseNode, expr_use_ctxt, is_diag_item_method, is_diag_trait_item, path_to_local_id}; use core::ops::ControlFlow; use rustc_errors::Applicability; use rustc_hir::{BindingMode, BorrowKind, ByRef, ClosureKind, Expr, ExprKind, Mutability, Node, PatKind}; use rustc_lint::LateContext; use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow, AutoBorrowMutability}; -use rustc_span::{sym, Span, Symbol, DUMMY_SP}; +use rustc_span::{DUMMY_SP, Span, Symbol, sym}; use super::MANUAL_INSPECT; diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_is_variant_and.rs b/src/tools/clippy/clippy_lints/src/methods/manual_is_variant_and.rs index d29acd4622a..c377abd6237 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_is_variant_and.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_is_variant_and.rs @@ -4,7 +4,7 @@ use clippy_utils::source::snippet; use clippy_utils::ty::is_type_diagnostic_item; use rustc_errors::Applicability; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::MANUAL_IS_VARIANT_AND; diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_ok_or.rs b/src/tools/clippy/clippy_lints/src/methods/manual_ok_or.rs index b1a8e1e5e47..4321dd6b0e0 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_ok_or.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_ok_or.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{indent_of, reindent_multiline, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, indent_of, reindent_multiline}; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::{is_res_lang_ctor, path_res, path_to_local_id}; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_try_fold.rs b/src/tools/clippy/clippy_lints/src/methods/manual_try_fold.rs index 11fba35c16e..31449d41770 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_try_fold.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_try_fold.rs @@ -8,7 +8,7 @@ use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::MANUAL_TRY_FOLD; diff --git a/src/tools/clippy/clippy_lints/src/methods/map_clone.rs b/src/tools/clippy/clippy_lints/src/methods/map_clone.rs index 08ce7e204dd..ac378ff3702 100644 --- a/src/tools/clippy/clippy_lints/src/methods/map_clone.rs +++ b/src/tools/clippy/clippy_lints/src/methods/map_clone.rs @@ -11,7 +11,7 @@ use rustc_middle::mir::Mutability; use rustc_middle::ty; use rustc_middle::ty::adjustment::Adjust; use rustc_span::symbol::Ident; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::MAP_CLONE; diff --git a/src/tools/clippy/clippy_lints/src/methods/map_flatten.rs b/src/tools/clippy/clippy_lints/src/methods/map_flatten.rs index 22a03825194..07a7a12b162 100644 --- a/src/tools/clippy/clippy_lints/src/methods/map_flatten.rs +++ b/src/tools/clippy/clippy_lints/src/methods/map_flatten.rs @@ -6,8 +6,8 @@ use rustc_errors::Applicability; use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use super::MAP_FLATTEN; diff --git a/src/tools/clippy/clippy_lints/src/methods/map_identity.rs b/src/tools/clippy/clippy_lints/src/methods/map_identity.rs index 5dd7b1b02ad..1f204de01da 100644 --- a/src/tools/clippy/clippy_lints/src/methods/map_identity.rs +++ b/src/tools/clippy/clippy_lints/src/methods/map_identity.rs @@ -4,7 +4,7 @@ use clippy_utils::{is_expr_untyped_identity_function, is_trait_method}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::MAP_IDENTITY; diff --git a/src/tools/clippy/clippy_lints/src/methods/mod.rs b/src/tools/clippy/clippy_lints/src/methods/mod.rs index f61bb3a6bf4..7696dd16b25 100644 --- a/src/tools/clippy/clippy_lints/src/methods/mod.rs +++ b/src/tools/clippy/clippy_lints/src/methods/mod.rs @@ -111,6 +111,7 @@ mod uninit_assumed_init; mod unit_hash; mod unnecessary_fallible_conversions; mod unnecessary_filter_map; +mod unnecessary_first_then_check; mod unnecessary_fold; mod unnecessary_get_then_check; mod unnecessary_iter_cloned; @@ -131,8 +132,8 @@ mod waker_clone_wake; mod wrong_self_convention; mod zst_offset; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_help}; use clippy_utils::macros::FormatArgsStorage; @@ -146,7 +147,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty::{self, TraitRef, Ty}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -441,6 +442,17 @@ declare_clippy_lint! { /// } /// } /// ``` + /// + /// Use instead: + /// ```no_run + /// # struct X; + /// impl X { + /// fn as_str(&self) -> &'static str { + /// // .. + /// # "" + /// } + /// } + /// ``` #[clippy::version = "pre 1.29.0"] pub WRONG_SELF_CONVENTION, style, @@ -3964,7 +3976,7 @@ declare_clippy_lint! { /// ```no_run /// let _ = 0; /// ``` - #[clippy::version = "1.78.0"] + #[clippy::version = "1.81.0"] pub UNNECESSARY_MIN_OR_MAX, complexity, "using 'min()/max()' when there is no need for it" @@ -4025,7 +4037,7 @@ declare_clippy_lint! { /// ``` #[clippy::version = "1.78.0"] pub MANUAL_C_STR_LITERALS, - pedantic, + complexity, r#"creating a `CStr` through functions when `c""` literals can be used"# } @@ -4099,7 +4111,7 @@ declare_clippy_lint! { /// ```no_run /// "foo".is_ascii(); /// ``` - #[clippy::version = "1.80.0"] + #[clippy::version = "1.81.0"] pub NEEDLESS_CHARACTER_ITERATION, suspicious, "is_ascii() called on a char iterator" @@ -4126,6 +4138,34 @@ declare_clippy_lint! { "use of `map` returning the original item" } +declare_clippy_lint! { + /// ### What it does + /// Checks the usage of `.first().is_some()` or `.first().is_none()` to check if a slice is + /// empty. + /// + /// ### Why is this bad? + /// Using `.is_empty()` is shorter and better communicates the intention. + /// + /// ### Example + /// ```no_run + /// let v = vec![1, 2, 3]; + /// if v.first().is_none() { + /// // The vector is empty... + /// } + /// ``` + /// Use instead: + /// ```no_run + /// let v = vec![1, 2, 3]; + /// if v.is_empty() { + /// // The vector is empty... + /// } + /// ``` + #[clippy::version = "1.83.0"] + pub UNNECESSARY_FIRST_THEN_CHECK, + complexity, + "calling `.first().is_some()` or `.first().is_none()` instead of `.is_empty()`" +} + pub struct Methods { avoid_breaking_exported_api: bool, msrv: Msrv, @@ -4283,6 +4323,7 @@ impl_lint_pass!(Methods => [ UNNECESSARY_RESULT_MAP_OR_ELSE, MANUAL_C_STR_LITERALS, UNNECESSARY_GET_THEN_CHECK, + UNNECESSARY_FIRST_THEN_CHECK, NEEDLESS_CHARACTER_ITERATION, MANUAL_INSPECT, UNNECESSARY_MIN_OR_MAX, @@ -5055,6 +5096,9 @@ fn check_is_some_is_none(cx: &LateContext<'_>, expr: &Expr<'_>, recv: &Expr<'_>, Some(("get", f_recv, [arg], _, _)) => { unnecessary_get_then_check::check(cx, call_span, recv, f_recv, arg, is_some); }, + Some(("first", f_recv, [], _, _)) => { + unnecessary_first_then_check::check(cx, call_span, recv, f_recv, is_some); + }, _ => {}, } } @@ -5130,12 +5174,9 @@ impl ShouldImplTraitCase { fn lifetime_param_cond(&self, impl_item: &hir::ImplItem<'_>) -> bool { self.lint_explicit_lifetime || !impl_item.generics.params.iter().any(|p| { - matches!( - p.kind, - hir::GenericParamKind::Lifetime { - kind: hir::LifetimeParamKind::Explicit - } - ) + matches!(p.kind, hir::GenericParamKind::Lifetime { + kind: hir::LifetimeParamKind::Explicit + }) }) } } diff --git a/src/tools/clippy/clippy_lints/src/methods/mut_mutex_lock.rs b/src/tools/clippy/clippy_lints/src/methods/mut_mutex_lock.rs index 1a0fce2876d..320523aceb6 100644 --- a/src/tools/clippy/clippy_lints/src/methods/mut_mutex_lock.rs +++ b/src/tools/clippy/clippy_lints/src/methods/mut_mutex_lock.rs @@ -1,17 +1,17 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::expr_custom_deref_adjustment; -use clippy_utils::ty::is_type_diagnostic_item; +use clippy_utils::ty::{is_type_diagnostic_item, peel_mid_ty_refs_is_mutable}; use rustc_errors::Applicability; use rustc_hir::{Expr, Mutability}; use rustc_lint::LateContext; -use rustc_middle::ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::MUT_MUTEX_LOCK; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, ex: &'tcx Expr<'tcx>, recv: &'tcx Expr<'tcx>, name_span: Span) { if matches!(expr_custom_deref_adjustment(cx, recv), None | Some(Mutability::Mut)) - && let ty::Ref(_, _, Mutability::Mut) = cx.typeck_results().expr_ty(recv).kind() + && let (_, ref_depth, Mutability::Mut) = peel_mid_ty_refs_is_mutable(cx.typeck_results().expr_ty(recv)) + && ref_depth >= 1 && let Some(method_id) = cx.typeck_results().type_dependent_def_id(ex.hir_id) && let Some(impl_id) = cx.tcx.impl_of_method(method_id) && is_type_diagnostic_item(cx, cx.tcx.type_of(impl_id).instantiate_identity(), sym::Mutex) diff --git a/src/tools/clippy/clippy_lints/src/methods/needless_character_iteration.rs b/src/tools/clippy/clippy_lints/src/methods/needless_character_iteration.rs index 332da722a37..348f740e7dd 100644 --- a/src/tools/clippy/clippy_lints/src/methods/needless_character_iteration.rs +++ b/src/tools/clippy/clippy_lints/src/methods/needless_character_iteration.rs @@ -4,8 +4,8 @@ use rustc_lint::LateContext; use rustc_middle::ty; use rustc_span::Span; -use super::utils::get_last_chain_binding_hir_id; use super::NEEDLESS_CHARACTER_ITERATION; +use super::utils::get_last_chain_binding_hir_id; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::SpanRangeExt; use clippy_utils::{match_def_path, path_to_local_id, peel_blocks}; diff --git a/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs b/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs index f61923e5bf5..c58e27e37ad 100644 --- a/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs +++ b/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs @@ -4,12 +4,12 @@ use clippy_utils::source::{snippet, snippet_with_applicability}; use clippy_utils::sugg::Sugg; use clippy_utils::ty::{get_type_diagnostic_name, make_normalized_projection, make_projection}; use clippy_utils::{ - can_move_expr_to_closure, fn_def_id, get_enclosing_block, higher, is_trait_method, path_to_local, path_to_local_id, - CaptureKind, + CaptureKind, can_move_expr_to_closure, fn_def_id, get_enclosing_block, higher, is_trait_method, path_to_local, + path_to_local_id, }; use rustc_data_structures::fx::FxHashMap; use rustc_errors::{Applicability, MultiSpan}; -use rustc_hir::intravisit::{walk_block, walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_block, walk_expr}; use rustc_hir::{ BindingMode, Block, Expr, ExprKind, HirId, HirIdSet, LetStmt, Mutability, Node, PatKind, Stmt, StmtKind, }; @@ -17,7 +17,7 @@ use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, AssocKind, ClauseKind, EarlyBinder, GenericArg, GenericArgKind, Ty}; use rustc_span::symbol::Ident; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; const NEEDLESS_COLLECT_MSG: &str = "avoid using `collect()` when not needed"; @@ -441,7 +441,7 @@ struct UsedCountVisitor<'a, 'tcx> { count: usize, } -impl<'a, 'tcx> Visitor<'tcx> for UsedCountVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for UsedCountVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { diff --git a/src/tools/clippy/clippy_lints/src/methods/needless_option_as_deref.rs b/src/tools/clippy/clippy_lints/src/methods/needless_option_as_deref.rs index 9f714fdd47b..538aa9097a4 100644 --- a/src/tools/clippy/clippy_lints/src/methods/needless_option_as_deref.rs +++ b/src/tools/clippy/clippy_lints/src/methods/needless_option_as_deref.rs @@ -4,8 +4,8 @@ use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::usage::local_used_after_expr; use rustc_errors::Applicability; -use rustc_hir::def::Res; use rustc_hir::Expr; +use rustc_hir::def::Res; use rustc_lint::LateContext; use rustc_span::sym; diff --git a/src/tools/clippy/clippy_lints/src/methods/no_effect_replace.rs b/src/tools/clippy/clippy_lints/src/methods/no_effect_replace.rs index a301a5f7d65..32f32f1b216 100644 --- a/src/tools/clippy/clippy_lints/src/methods/no_effect_replace.rs +++ b/src/tools/clippy/clippy_lints/src/methods/no_effect_replace.rs @@ -1,6 +1,6 @@ +use clippy_utils::SpanlessEq; use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_type_lang_item; -use clippy_utils::SpanlessEq; use rustc_ast::LitKind; use rustc_hir::{ExprKind, LangItem}; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/methods/open_options.rs b/src/tools/clippy/clippy_lints/src/methods/open_options.rs index f1a3c81cebb..da084871402 100644 --- a/src/tools/clippy/clippy_lints/src/methods/open_options.rs +++ b/src/tools/clippy/clippy_lints/src/methods/open_options.rs @@ -8,7 +8,7 @@ use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; use rustc_middle::ty::Ty; use rustc_span::source_map::Spanned; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::{NONSENSICAL_OPEN_OPTIONS, SUSPICIOUS_OPEN_OPTIONS}; @@ -126,17 +126,13 @@ fn get_open_options( && let ExprKind::Path(path) = callee.kind && let Some(did) = cx.qpath_res(&path, callee.hir_id).opt_def_id() { - let std_file_options = [ - sym::file_options, - sym::open_options_new, - ]; + let std_file_options = [sym::file_options, sym::open_options_new]; - let tokio_file_options: &[&[&str]] = &[ - &paths::TOKIO_IO_OPEN_OPTIONS_NEW, - &paths::TOKIO_FILE_OPTIONS, - ]; + let tokio_file_options: &[&[&str]] = &[&paths::TOKIO_IO_OPEN_OPTIONS_NEW, &paths::TOKIO_FILE_OPTIONS]; - let is_std_options = std_file_options.into_iter().any(|sym| cx.tcx.is_diagnostic_item(sym, did)); + let is_std_options = std_file_options + .into_iter() + .any(|sym| cx.tcx.is_diagnostic_item(sym, did)); is_std_options || match_any_def_paths(cx, did, tokio_file_options).is_some() } else { false diff --git a/src/tools/clippy/clippy_lints/src/methods/option_as_ref_cloned.rs b/src/tools/clippy/clippy_lints/src/methods/option_as_ref_cloned.rs index ba167f9d9c2..9b22494888f 100644 --- a/src/tools/clippy/clippy_lints/src/methods/option_as_ref_cloned.rs +++ b/src/tools/clippy/clippy_lints/src/methods/option_as_ref_cloned.rs @@ -3,9 +3,9 @@ use clippy_utils::ty::is_type_diagnostic_item; use rustc_errors::Applicability; use rustc_hir::Expr; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; -use super::{method_call, OPTION_AS_REF_CLONED}; +use super::{OPTION_AS_REF_CLONED, method_call}; pub(super) fn check(cx: &LateContext<'_>, cloned_recv: &Expr<'_>, cloned_ident_span: Span) { if let Some((method @ ("as_ref" | "as_mut"), as_ref_recv, [], as_ref_ident_span, _)) = method_call(cloned_recv) diff --git a/src/tools/clippy/clippy_lints/src/methods/option_as_ref_deref.rs b/src/tools/clippy/clippy_lints/src/methods/option_as_ref_deref.rs index 9a18d8a1421..389e02056b2 100644 --- a/src/tools/clippy/clippy_lints/src/methods/option_as_ref_deref.rs +++ b/src/tools/clippy/clippy_lints/src/methods/option_as_ref_deref.rs @@ -7,7 +7,7 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; use super::OPTION_AS_REF_DEREF; @@ -48,7 +48,9 @@ pub(super) fn check( .map_or(false, |fun_def_id| { cx.tcx.is_diagnostic_item(sym::deref_method, fun_def_id) || cx.tcx.is_diagnostic_item(sym::deref_mut_method, fun_def_id) - || deref_aliases.iter().any(|&sym| cx.tcx.is_diagnostic_item(sym, fun_def_id)) + || deref_aliases + .iter() + .any(|&sym| cx.tcx.is_diagnostic_item(sym, fun_def_id)) }) }, hir::ExprKind::Closure(&hir::Closure { body, .. }) => { @@ -69,7 +71,9 @@ pub(super) fn check( let method_did = cx.typeck_results().type_dependent_def_id(closure_expr.hir_id).unwrap(); cx.tcx.is_diagnostic_item(sym::deref_method, method_did) || cx.tcx.is_diagnostic_item(sym::deref_mut_method, method_did) - || deref_aliases.iter().any(|&sym| cx.tcx.is_diagnostic_item(sym, method_did)) + || deref_aliases + .iter() + .any(|&sym| cx.tcx.is_diagnostic_item(sym, method_did)) } else { false } diff --git a/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs b/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs index ed3bed42eb3..528e2204cf8 100644 --- a/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs +++ b/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs @@ -5,11 +5,11 @@ use clippy_utils::ty::{is_copy, is_type_diagnostic_item}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::Res; -use rustc_hir::intravisit::{walk_path, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_path}; use rustc_hir::{ExprKind, HirId, Node, PatKind, Path, QPath}; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::ops::ControlFlow; use super::MAP_UNWRAP_OR; @@ -130,7 +130,7 @@ struct UnwrapVisitor<'a, 'tcx> { identifiers: FxHashSet<HirId>, } -impl<'a, 'tcx> Visitor<'tcx> for UnwrapVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for UnwrapVisitor<'_, 'tcx> { type NestedFilter = nested_filter::All; fn visit_path(&mut self, path: &Path<'tcx>, _: HirId) { @@ -154,7 +154,7 @@ struct ReferenceVisitor<'a, 'tcx> { unwrap_or_span: Span, } -impl<'a, 'tcx> Visitor<'tcx> for ReferenceVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for ReferenceVisitor<'_, 'tcx> { type NestedFilter = nested_filter::All; type Result = ControlFlow<()>; fn visit_expr(&mut self, expr: &'tcx rustc_hir::Expr<'_>) -> ControlFlow<()> { diff --git a/src/tools/clippy/clippy_lints/src/methods/or_fun_call.rs b/src/tools/clippy/clippy_lints/src/methods/or_fun_call.rs index af71799f0a7..b971f60d416 100644 --- a/src/tools/clippy/clippy_lints/src/methods/or_fun_call.rs +++ b/src/tools/clippy/clippy_lints/src/methods/or_fun_call.rs @@ -11,8 +11,8 @@ use clippy_utils::{ use rustc_errors::Applicability; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::symbol::{self, sym, Symbol}; use rustc_span::Span; +use rustc_span::symbol::{self, Symbol, sym}; use {rustc_ast as ast, rustc_hir as hir}; use super::{OR_FUN_CALL, UNWRAP_OR_DEFAULT}; @@ -77,7 +77,7 @@ pub(super) fn check<'tcx>( let Some(suggested_method_def_id) = receiver_ty.ty_adt_def().and_then(|adt_def| { cx.tcx .inherent_impls(adt_def.did()) - .into_iter() + .iter() .flat_map(|impl_id| cx.tcx.associated_items(impl_id).filter_by_name_unhygienic(sugg)) .find_map(|assoc| { if assoc.fn_has_self_parameter diff --git a/src/tools/clippy/clippy_lints/src/methods/or_then_unwrap.rs b/src/tools/clippy/clippy_lints/src/methods/or_then_unwrap.rs index 7b0bdcf99e7..3e64e15dc86 100644 --- a/src/tools/clippy/clippy_lints/src/methods/or_then_unwrap.rs +++ b/src/tools/clippy/clippy_lints/src/methods/or_then_unwrap.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_hir::lang_items::LangItem; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::OR_THEN_UNWRAP; diff --git a/src/tools/clippy/clippy_lints/src/methods/range_zip_with_len.rs b/src/tools/clippy/clippy_lints/src/methods/range_zip_with_len.rs index 28ca76832eb..f4d206c5307 100644 --- a/src/tools/clippy/clippy_lints/src/methods/range_zip_with_len.rs +++ b/src/tools/clippy/clippy_lints/src/methods/range_zip_with_len.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::source::snippet; -use clippy_utils::{higher, is_integer_const, is_trait_method, SpanlessEq}; +use clippy_utils::{SpanlessEq, higher, is_integer_const, is_trait_method}; use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::LateContext; use rustc_span::sym; diff --git a/src/tools/clippy/clippy_lints/src/methods/search_is_some.rs b/src/tools/clippy/clippy_lints/src/methods/search_is_some.rs index 3b2dd285b8c..4ab165a5528 100644 --- a/src/tools/clippy/clippy_lints/src/methods/search_is_some.rs +++ b/src/tools/clippy/clippy_lints/src/methods/search_is_some.rs @@ -8,8 +8,8 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::PatKind; use rustc_lint::LateContext; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use super::SEARCH_IS_SOME; diff --git a/src/tools/clippy/clippy_lints/src/methods/seek_from_current.rs b/src/tools/clippy/clippy_lints/src/methods/seek_from_current.rs index 8bc535ac47a..7ef07fe899c 100644 --- a/src/tools/clippy/clippy_lints/src/methods/seek_from_current.rs +++ b/src/tools/clippy/clippy_lints/src/methods/seek_from_current.rs @@ -6,9 +6,9 @@ use rustc_lint::LateContext; use rustc_span::sym; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::is_enum_variant_ctor; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::implements_trait; -use clippy_utils::is_enum_variant_ctor; use super::SEEK_FROM_CURRENT; diff --git a/src/tools/clippy/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs b/src/tools/clippy/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs index 7c09cc252e1..9c966f010f1 100644 --- a/src/tools/clippy/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs +++ b/src/tools/clippy/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs @@ -1,12 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::implements_trait; -use clippy_utils::{is_expr_used_or_unified, is_enum_variant_ctor}; +use clippy_utils::{is_enum_variant_ctor, is_expr_used_or_unified}; use rustc_ast::ast::{LitIntType, LitKind}; use rustc_data_structures::packed::Pu128; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::SEEK_TO_START_INSTEAD_OF_REWIND; diff --git a/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs b/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs index 12cabd43cb1..69032776b2b 100644 --- a/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs +++ b/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs @@ -3,7 +3,7 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::source::snippet_with_context; use clippy_utils::usage::local_used_after_expr; -use clippy_utils::visitors::{for_each_expr, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr}; use clippy_utils::{is_diag_item_method, match_def_path, path_to_local_id, paths}; use core::ops::ControlFlow; use rustc_errors::Applicability; @@ -12,7 +12,7 @@ use rustc_hir::{ }; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, Span, Symbol, SyntaxContext}; +use rustc_span::{Span, Symbol, SyntaxContext, sym}; use super::{MANUAL_SPLIT_ONCE, NEEDLESS_SPLITN}; diff --git a/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs b/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs index 38f2c916912..c60a49067ec 100644 --- a/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs +++ b/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::is_type_diagnostic_item; use rustc_errors::{Applicability, Diag}; use rustc_lint::LateContext; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use {rustc_ast as ast, rustc_hir as hir}; use super::SUSPICIOUS_COMMAND_ARG_SPACE; diff --git a/src/tools/clippy/clippy_lints/src/methods/type_id_on_box.rs b/src/tools/clippy/clippy_lints/src/methods/type_id_on_box.rs index db8cc4595d4..e67ba5c4d31 100644 --- a/src/tools/clippy/clippy_lints/src/methods/type_id_on_box.rs +++ b/src/tools/clippy/clippy_lints/src/methods/type_id_on_box.rs @@ -7,7 +7,7 @@ use rustc_lint::LateContext; use rustc_middle::ty::adjustment::{Adjust, Adjustment}; use rustc_middle::ty::print::with_forced_trimmed_paths; use rustc_middle::ty::{self, ExistentialPredicate, Ty}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; /// Checks if the given type is `dyn Any`, or a trait object that has `Any` as a supertrait. /// Only in those cases will its vtable have a `type_id` method that returns the implementor's diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_fallible_conversions.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_fallible_conversions.rs index d46b584f8f4..ce81282ddfe 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_fallible_conversions.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_fallible_conversions.rs @@ -6,7 +6,7 @@ use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_middle::ty::print::with_forced_trimmed_paths; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::UNNECESSARY_FALLIBLE_CONVERSIONS; diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_filter_map.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_filter_map.rs index c9b9d98dbe6..ca46da81fa0 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_filter_map.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_filter_map.rs @@ -2,7 +2,7 @@ use super::utils::clone_or_copy_needed; use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_copy; use clippy_utils::usage::mutated_variables; -use clippy_utils::visitors::{for_each_expr_without_closures, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr_without_closures}; use clippy_utils::{is_res_lang_ctor, is_trait_method, path_res, path_to_local_id}; use core::ops::ControlFlow; use rustc_hir as hir; diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_first_then_check.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_first_then_check.rs new file mode 100644 index 00000000000..7ae1bb54e60 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_first_then_check.rs @@ -0,0 +1,56 @@ +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::SpanRangeExt; + +use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::LateContext; +use rustc_span::Span; + +use super::UNNECESSARY_FIRST_THEN_CHECK; + +pub(super) fn check( + cx: &LateContext<'_>, + call_span: Span, + first_call: &Expr<'_>, + first_caller: &Expr<'_>, + is_some: bool, +) { + if !cx + .typeck_results() + .expr_ty_adjusted(first_caller) + .peel_refs() + .is_slice() + { + return; + } + + let ExprKind::MethodCall(_, _, _, first_call_span) = first_call.kind else { + return; + }; + + let both_calls_span = first_call_span.with_hi(call_span.hi()); + if let Some(both_calls_snippet) = both_calls_span.get_source_text(cx) + && let Some(first_caller_snippet) = first_caller.span.get_source_text(cx) + { + let (sugg_span, suggestion) = if is_some { + ( + first_caller.span.with_hi(call_span.hi()), + format!("!{first_caller_snippet}.is_empty()"), + ) + } else { + (both_calls_span, "is_empty()".to_owned()) + }; + span_lint_and_sugg( + cx, + UNNECESSARY_FIRST_THEN_CHECK, + sugg_span, + format!( + "unnecessary use of `{both_calls_snippet}` to check if slice {}", + if is_some { "is not empty" } else { "is empty" } + ), + "replace this with", + suggestion, + Applicability::MaybeIncorrect, + ); + } +} diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_fold.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_fold.rs index ccc8d17970e..b5d8972d7aa 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_fold.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_fold.rs @@ -8,7 +8,7 @@ use rustc_hir as hir; use rustc_hir::PatKind; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::UNNECESSARY_FOLD; @@ -123,58 +123,32 @@ pub(super) fn check( if let hir::ExprKind::Lit(lit) = init.kind { match lit.node { ast::LitKind::Bool(false) => { - check_fold_with_op( - cx, - expr, - acc, - fold_span, - hir::BinOpKind::Or, - Replacement { - has_args: true, - has_generic_return: false, - method_name: "any", - }, - ); + check_fold_with_op(cx, expr, acc, fold_span, hir::BinOpKind::Or, Replacement { + has_args: true, + has_generic_return: false, + method_name: "any", + }); }, ast::LitKind::Bool(true) => { - check_fold_with_op( - cx, - expr, - acc, - fold_span, - hir::BinOpKind::And, - Replacement { - has_args: true, - has_generic_return: false, - method_name: "all", - }, - ); + check_fold_with_op(cx, expr, acc, fold_span, hir::BinOpKind::And, Replacement { + has_args: true, + has_generic_return: false, + method_name: "all", + }); }, - ast::LitKind::Int(Pu128(0), _) => check_fold_with_op( - cx, - expr, - acc, - fold_span, - hir::BinOpKind::Add, - Replacement { + ast::LitKind::Int(Pu128(0), _) => { + check_fold_with_op(cx, expr, acc, fold_span, hir::BinOpKind::Add, Replacement { has_args: false, has_generic_return: needs_turbofish(cx, expr), method_name: "sum", - }, - ), + }); + }, ast::LitKind::Int(Pu128(1), _) => { - check_fold_with_op( - cx, - expr, - acc, - fold_span, - hir::BinOpKind::Mul, - Replacement { - has_args: false, - has_generic_return: needs_turbofish(cx, expr), - method_name: "product", - }, - ); + check_fold_with_op(cx, expr, acc, fold_span, hir::BinOpKind::Mul, Replacement { + has_args: false, + has_generic_return: needs_turbofish(cx, expr), + method_name: "product", + }); }, _ => (), } diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_get_then_check.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_get_then_check.rs index 64eb8411795..39fce2c40c9 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_get_then_check.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_get_then_check.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; use rustc_middle::ty::Ty; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::UNNECESSARY_GET_THEN_CHECK; diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_iter_cloned.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_iter_cloned.rs index 4d18bc7ac77..029704882dd 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_iter_cloned.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_iter_cloned.rs @@ -10,7 +10,7 @@ use rustc_errors::Applicability; use rustc_hir::def_id::DefId; use rustc_hir::{BindingMode, Expr, ExprKind, Node, PatKind}; use rustc_lint::LateContext; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; use super::UNNECESSARY_TO_OWNED; diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_literal_unwrap.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_literal_unwrap.rs index 494d71fc053..6dc8adb42df 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_literal_unwrap.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_literal_unwrap.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::{is_res_lang_ctor, last_path_segment, path_res, MaybePath}; +use clippy_utils::{MaybePath, is_res_lang_ctor, last_path_segment, path_res}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_min_or_max.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_min_or_max.rs index 86c0a6322b6..062d1348555 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_min_or_max.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_min_or_max.rs @@ -1,16 +1,15 @@ use std::cmp::Ordering; use super::UNNECESSARY_MIN_OR_MAX; -use clippy_utils::diagnostics::span_lint_and_sugg; - use clippy_utils::consts::{ConstEvalCtxt, Constant, ConstantSource, FullInt}; +use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir::Expr; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::Span; +use rustc_span::{Span, sym}; pub(super) fn check<'tcx>( cx: &LateContext<'tcx>, @@ -21,26 +20,30 @@ pub(super) fn check<'tcx>( ) { let typeck_results = cx.typeck_results(); let ecx = ConstEvalCtxt::with_env(cx.tcx, cx.param_env, typeck_results); - if let Some((left, ConstantSource::Local | ConstantSource::CoreConstant)) = ecx.eval_with_source(recv) - && let Some((right, ConstantSource::Local | ConstantSource::CoreConstant)) = ecx.eval_with_source(arg) + if let Some(id) = typeck_results.type_dependent_def_id(expr.hir_id) + && (cx.tcx.is_diagnostic_item(sym::cmp_ord_min, id) || cx.tcx.is_diagnostic_item(sym::cmp_ord_max, id)) { - let Some(ord) = Constant::partial_cmp(cx.tcx, typeck_results.expr_ty(recv), &left, &right) else { - return; - }; + if let Some((left, ConstantSource::Local | ConstantSource::CoreConstant)) = ecx.eval_with_source(recv) + && let Some((right, ConstantSource::Local | ConstantSource::CoreConstant)) = ecx.eval_with_source(arg) + { + let Some(ord) = Constant::partial_cmp(cx.tcx, typeck_results.expr_ty(recv), &left, &right) else { + return; + }; - lint(cx, expr, name, recv.span, arg.span, ord); - } else if let Some(extrema) = detect_extrema(cx, recv) { - let ord = match extrema { - Extrema::Minimum => Ordering::Less, - Extrema::Maximum => Ordering::Greater, - }; - lint(cx, expr, name, recv.span, arg.span, ord); - } else if let Some(extrema) = detect_extrema(cx, arg) { - let ord = match extrema { - Extrema::Minimum => Ordering::Greater, - Extrema::Maximum => Ordering::Less, - }; - lint(cx, expr, name, recv.span, arg.span, ord); + lint(cx, expr, name, recv.span, arg.span, ord); + } else if let Some(extrema) = detect_extrema(cx, recv) { + let ord = match extrema { + Extrema::Minimum => Ordering::Less, + Extrema::Maximum => Ordering::Greater, + }; + lint(cx, expr, name, recv.span, arg.span, ord); + } else if let Some(extrema) = detect_extrema(cx, arg) { + let ord = match extrema { + Extrema::Minimum => Ordering::Greater, + Extrema::Maximum => Ordering::Less, + }; + lint(cx, expr, name, recv.span, arg.span, ord); + } } } diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_result_map_or_else.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_result_map_or_else.rs index c14a87c1534..dc50717112d 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_result_map_or_else.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_result_map_or_else.rs @@ -8,8 +8,8 @@ use rustc_hir::{Closure, Expr, ExprKind, HirId, QPath}; use rustc_lint::LateContext; use rustc_span::symbol::sym; -use super::utils::get_last_chain_binding_hir_id; use super::UNNECESSARY_RESULT_MAP_OR_ELSE; +use super::utils::get_last_chain_binding_hir_id; fn emit_lint(cx: &LateContext<'_>, expr: &Expr<'_>, recv: &Expr<'_>, def_arg: &Expr<'_>) { let msg = "unused \"map closure\" when calling `Result::map_or_else` value"; diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs index bf7555a29e2..cfa1fdb8137 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs @@ -2,12 +2,11 @@ use super::implicit_clone::is_clone_like; use super::unnecessary_iter_cloned::{self, is_into_iter}; use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; -use clippy_utils::source::{snippet, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::{get_iterator_item_ty, implements_trait, is_copy, is_type_diagnostic_item, is_type_lang_item}; use clippy_utils::visitors::find_all_ret_expressions; use clippy_utils::{ - fn_def_id, get_parent_expr, is_diag_item_method, is_diag_trait_item, peel_middle_ty_refs, - return_ty, + fn_def_id, get_parent_expr, is_diag_item_method, is_diag_trait_item, peel_middle_ty_refs, return_ty, }; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; @@ -20,7 +19,7 @@ use rustc_middle::ty::adjustment::{Adjust, Adjustment, OverloadedDeref}; use rustc_middle::ty::{ self, ClauseKind, GenericArg, GenericArgKind, GenericArgsRef, ParamTy, ProjectionPredicate, TraitPredicate, Ty, }; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_trait_selection::traits::{Obligation, ObligationCause}; @@ -717,7 +716,7 @@ fn check_if_applicable_to_argument<'tcx>(cx: &LateContext<'tcx>, arg: &Expr<'tcx // check that: // 1. This is a method with only one argument that doesn't come from a trait. // 2. That it has `Borrow` in its generic predicates. -// 3. `Self` is a std "map type" (ie `HashSet`, `HashMap`, BTreeSet`, `BTreeMap`). +// 3. `Self` is a std "map type" (ie `HashSet`, `HashMap`, `BTreeSet`, `BTreeMap`). fn check_borrow_predicate<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>) { if let ExprKind::MethodCall(_, caller, &[arg], _) = expr.kind && let Some(method_def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) diff --git a/src/tools/clippy/clippy_lints/src/methods/unused_enumerate_index.rs b/src/tools/clippy/clippy_lints/src/methods/unused_enumerate_index.rs index ee5177d1ffa..6c2ae9cc6bf 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unused_enumerate_index.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unused_enumerate_index.rs @@ -1,11 +1,11 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; -use clippy_utils::source::{snippet, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::{expr_or_init, is_trait_method, pat_is_wild}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, FnDecl, PatKind, TyKind}; use rustc_lint::LateContext; use rustc_middle::ty::AdtDef; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use crate::loops::UNUSED_ENUMERATE_INDEX; diff --git a/src/tools/clippy/clippy_lints/src/methods/useless_asref.rs b/src/tools/clippy/clippy_lints/src/methods/useless_asref.rs index ebad4ae6ee9..eafe7486bb0 100644 --- a/src/tools/clippy/clippy_lints/src/methods/useless_asref.rs +++ b/src/tools/clippy/clippy_lints/src/methods/useless_asref.rs @@ -9,7 +9,7 @@ use rustc_hir::{self as hir, LangItem}; use rustc_lint::LateContext; use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::{Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitor}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use core::ops::ControlFlow; diff --git a/src/tools/clippy/clippy_lints/src/methods/utils.rs b/src/tools/clippy/clippy_lints/src/methods/utils.rs index fe860e5ae26..cf0ee569f13 100644 --- a/src/tools/clippy/clippy_lints/src/methods/utils.rs +++ b/src/tools/clippy/clippy_lints/src/methods/utils.rs @@ -1,12 +1,12 @@ use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::{get_parent_expr, path_to_local_id, usage}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BorrowKind, Expr, ExprKind, HirId, Mutability, Pat, QPath, Stmt, StmtKind}; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, Ty}; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; pub(super) fn derefs_to_slice<'tcx>( cx: &LateContext<'tcx>, @@ -86,7 +86,7 @@ struct CloneOrCopyVisitor<'cx, 'tcx> { references_to_binding: Vec<(Span, String)>, } -impl<'cx, 'tcx> Visitor<'tcx> for CloneOrCopyVisitor<'cx, 'tcx> { +impl<'tcx> Visitor<'tcx> for CloneOrCopyVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn nested_visit_map(&mut self) -> Self::Map { @@ -123,7 +123,7 @@ impl<'cx, 'tcx> Visitor<'tcx> for CloneOrCopyVisitor<'cx, 'tcx> { } } -impl<'cx, 'tcx> CloneOrCopyVisitor<'cx, 'tcx> { +impl<'tcx> CloneOrCopyVisitor<'_, 'tcx> { fn is_binding(&self, expr: &Expr<'tcx>) -> bool { self.binding_hir_ids .iter() diff --git a/src/tools/clippy/clippy_lints/src/methods/vec_resize_to_zero.rs b/src/tools/clippy/clippy_lints/src/methods/vec_resize_to_zero.rs index 3e271a60611..5ea4ada128a 100644 --- a/src/tools/clippy/clippy_lints/src/methods/vec_resize_to_zero.rs +++ b/src/tools/clippy/clippy_lints/src/methods/vec_resize_to_zero.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; use rustc_span::source_map::Spanned; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use super::VEC_RESIZE_TO_ZERO; diff --git a/src/tools/clippy/clippy_lints/src/methods/waker_clone_wake.rs b/src/tools/clippy/clippy_lints/src/methods/waker_clone_wake.rs index 9b64cc7589c..b5f34a9be2e 100644 --- a/src/tools/clippy/clippy_lints/src/methods/waker_clone_wake.rs +++ b/src/tools/clippy/clippy_lints/src/methods/waker_clone_wake.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::snippet_with_applicability; use clippy_utils::is_trait_method; +use clippy_utils::source::snippet_with_applicability; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/min_ident_chars.rs b/src/tools/clippy/clippy_lints/src/min_ident_chars.rs index c83e5198c27..a99e21d938c 100644 --- a/src/tools/clippy/clippy_lints/src/min_ident_chars.rs +++ b/src/tools/clippy/clippy_lints/src/min_ident_chars.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::is_from_proc_macro; use rustc_data_structures::fx::FxHashSet; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::intravisit::{walk_item, walk_trait_item, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_item, walk_trait_item}; use rustc_hir::{GenericParamKind, HirId, Item, ItemKind, ItemLocalId, Node, Pat, PatKind, TraitItem, UsePath}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; diff --git a/src/tools/clippy/clippy_lints/src/misc.rs b/src/tools/clippy/clippy_lints/src/misc.rs index a9aafe7ed56..408dbef9cb1 100644 --- a/src/tools/clippy/clippy_lints/src/misc.rs +++ b/src/tools/clippy/clippy_lints/src/misc.rs @@ -2,11 +2,12 @@ use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir, span_lint_hir use clippy_utils::source::{snippet, snippet_with_context}; use clippy_utils::sugg::Sugg; use clippy_utils::{ - fulfill_or_allowed, get_parent_expr, in_automatically_derived, is_lint_allowed, iter_input_pats, last_path_segment, - SpanlessEq, + SpanlessEq, fulfill_or_allowed, get_parent_expr, in_automatically_derived, is_lint_allowed, iter_input_pats, + last_path_segment, }; use rustc_errors::Applicability; use rustc_hir::def::Res; +use rustc_hir::def_id::LOCAL_CRATE; use rustc_hir::intravisit::FnKind; use rustc_hir::{ BinOpKind, BindingMode, Body, ByRef, Expr, ExprKind, FnDecl, Mutability, PatKind, QPath, Stmt, StmtKind, @@ -14,8 +15,8 @@ use rustc_hir::{ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; use crate::ref_patterns::REF_PATTERNS; @@ -82,6 +83,45 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does + /// Checks for the use of item with a single leading + /// underscore. + /// + /// ### Why is this bad? + /// A single leading underscore is usually used to indicate + /// that a item will not be used. Using such a item breaks this + /// expectation. + /// + /// ### Example + /// ```no_run + /// fn _foo() {} + /// + /// struct _FooStruct {} + /// + /// fn main() { + /// _foo(); + /// let _ = _FooStruct{}; + /// } + /// ``` + /// + /// Use instead: + /// ```no_run + /// fn foo() {} + /// + /// struct FooStruct {} + /// + /// fn main() { + /// foo(); + /// let _ = FooStruct{}; + /// } + /// ``` + #[clippy::version = "pre 1.29.0"] + pub USED_UNDERSCORE_ITEMS, + pedantic, + "using a item which is prefixed with an underscore" +} + +declare_clippy_lint! { + /// ### What it does /// Checks for the use of short circuit boolean conditions as /// a /// statement. @@ -104,6 +144,7 @@ declare_clippy_lint! { declare_lint_pass!(LintPass => [ TOPLEVEL_REF_ARG, USED_UNDERSCORE_BINDING, + USED_UNDERSCORE_ITEMS, SHORT_CIRCUIT_STATEMENT, ]); @@ -205,51 +246,104 @@ impl<'tcx> LateLintPass<'tcx> for LintPass { { return; } - let (definition_hir_id, ident) = match expr.kind { - ExprKind::Path(ref qpath) => { - if let QPath::Resolved(None, path) = qpath - && let Res::Local(id) = path.res - && is_used(cx, expr) - { - (id, last_path_segment(qpath).ident) - } else { - return; - } - }, - ExprKind::Field(recv, ident) => { - if let Some(adt_def) = cx.typeck_results().expr_ty_adjusted(recv).ty_adt_def() - && let Some(field) = adt_def.all_fields().find(|field| field.name == ident.name) - && let Some(local_did) = field.did.as_local() - && !cx.tcx.type_of(field.did).skip_binder().is_phantom_data() - { - (cx.tcx.local_def_id_to_hir_id(local_did), ident) - } else { - return; - } + + used_underscore_binding(cx, expr); + used_underscore_items(cx, expr); + } +} + +fn used_underscore_items<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + let (def_id, ident) = match expr.kind { + ExprKind::Call(func, ..) => { + if let ExprKind::Path(QPath::Resolved(.., path)) = func.kind + && let Some(last_segment) = path.segments.last() + && let Res::Def(_, def_id) = last_segment.res + { + (def_id, last_segment.ident) + } else { + return; + } + }, + ExprKind::MethodCall(path, ..) => { + if let Some(def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) { + (def_id, path.ident) + } else { + return; + } + }, + ExprKind::Struct(QPath::Resolved(_, path), ..) => { + if let Some(last_segment) = path.segments.last() + && let Res::Def(_, def_id) = last_segment.res + { + (def_id, last_segment.ident) + } else { + return; + } + }, + _ => return, + }; + + let name = ident.name.as_str(); + let definition_span = cx.tcx.def_span(def_id); + if name.starts_with('_') + && !name.starts_with("__") + && !definition_span.from_expansion() + && def_id.krate == LOCAL_CRATE + { + span_lint_and_then( + cx, + USED_UNDERSCORE_ITEMS, + expr.span, + "used underscore-prefixed item".to_string(), + |diag| { + diag.span_note(definition_span, "item is defined here".to_string()); }, - _ => return, - }; + ); + } +} - let name = ident.name.as_str(); - if name.starts_with('_') - && !name.starts_with("__") - && let definition_span = cx.tcx.hir().span(definition_hir_id) - && !definition_span.from_expansion() - && !fulfill_or_allowed(cx, USED_UNDERSCORE_BINDING, [expr.hir_id, definition_hir_id]) - { - span_lint_and_then( - cx, - USED_UNDERSCORE_BINDING, - expr.span, - format!( - "used binding `{name}` which is prefixed with an underscore. A leading \ - underscore signals that a binding will not be used" - ), - |diag| { - diag.span_note(definition_span, format!("`{name}` is defined here")); - }, - ); - } +fn used_underscore_binding<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + let (definition_hir_id, ident) = match expr.kind { + ExprKind::Path(ref qpath) => { + if let QPath::Resolved(None, path) = qpath + && let Res::Local(id) = path.res + && is_used(cx, expr) + { + (id, last_path_segment(qpath).ident) + } else { + return; + } + }, + ExprKind::Field(recv, ident) => { + if let Some(adt_def) = cx.typeck_results().expr_ty_adjusted(recv).ty_adt_def() + && let Some(field) = adt_def.all_fields().find(|field| field.name == ident.name) + && let Some(local_did) = field.did.as_local() + && !cx.tcx.type_of(field.did).skip_binder().is_phantom_data() + { + (cx.tcx.local_def_id_to_hir_id(local_did), ident) + } else { + return; + } + }, + _ => return, + }; + + let name = ident.name.as_str(); + if name.starts_with('_') + && !name.starts_with("__") + && let definition_span = cx.tcx.hir().span(definition_hir_id) + && !definition_span.from_expansion() + && !fulfill_or_allowed(cx, USED_UNDERSCORE_BINDING, [expr.hir_id, definition_hir_id]) + { + span_lint_and_then( + cx, + USED_UNDERSCORE_BINDING, + expr.span, + "used underscore-prefixed binding".to_string(), + |diag| { + diag.span_note(definition_span, "binding is defined here".to_string()); + }, + ); } } diff --git a/src/tools/clippy/clippy_lints/src/missing_assert_message.rs b/src/tools/clippy/clippy_lints/src/missing_assert_message.rs index a9ea11f4c2b..86348f04600 100644 --- a/src/tools/clippy/clippy_lints/src/missing_assert_message.rs +++ b/src/tools/clippy/clippy_lints/src/missing_assert_message.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_in_test; -use clippy_utils::macros::{find_assert_args, find_assert_eq_args, root_macro_call_first_node, PanicExpn}; +use clippy_utils::macros::{PanicExpn, find_assert_args, find_assert_eq_args, root_macro_call_first_node}; use rustc_hir::Expr; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/missing_asserts_for_indexing.rs b/src/tools/clippy/clippy_lints/src/missing_asserts_for_indexing.rs index 94c91b09517..b40d7eba15e 100644 --- a/src/tools/clippy/clippy_lints/src/missing_asserts_for_indexing.rs +++ b/src/tools/clippy/clippy_lints/src/missing_asserts_for_indexing.rs @@ -1,7 +1,7 @@ use std::mem; use std::ops::ControlFlow; -use clippy_utils::comparisons::{normalize_comparison, Rel}; +use clippy_utils::comparisons::{Rel, normalize_comparison}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use clippy_utils::visitors::for_each_expr_without_closures; @@ -14,7 +14,7 @@ use rustc_hir::{BinOp, Block, Body, Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::source_map::Spanned; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/missing_const_for_fn.rs b/src/tools/clippy/clippy_lints/src/missing_const_for_fn.rs index 859afe1b963..eea0459e026 100644 --- a/src/tools/clippy/clippy_lints/src/missing_const_for_fn.rs +++ b/src/tools/clippy/clippy_lints/src/missing_const_for_fn.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::qualify_min_const_fn::is_min_const_fn; use clippy_utils::{fn_has_unsatisfiable_preds, is_entrypoint_fn, is_from_proc_macro, trait_ref_of_method}; @@ -11,8 +11,8 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; use rustc_target::spec::abi::Abi; declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/missing_const_for_thread_local.rs b/src/tools/clippy/clippy_lints/src/missing_const_for_thread_local.rs index 954216038fb..c2f524a6353 100644 --- a/src/tools/clippy/clippy_lints/src/missing_const_for_thread_local.rs +++ b/src/tools/clippy/clippy_lints/src/missing_const_for_thread_local.rs @@ -1,12 +1,12 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::macros::macro_backtrace; use clippy_utils::qualify_min_const_fn::is_min_const_fn; use clippy_utils::source::snippet; use clippy_utils::{fn_has_unsatisfiable_preds, peel_blocks}; use rustc_errors::Applicability; -use rustc_hir::{intravisit, Expr, ExprKind}; +use rustc_hir::{Expr, ExprKind, intravisit}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; use rustc_span::sym::{self, thread_local_macro}; diff --git a/src/tools/clippy/clippy_lints/src/missing_doc.rs b/src/tools/clippy/clippy_lints/src/missing_doc.rs index 2166b0fe5a0..007bcebdff6 100644 --- a/src/tools/clippy/clippy_lints/src/missing_doc.rs +++ b/src/tools/clippy/clippy_lints/src/missing_doc.rs @@ -17,7 +17,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::Visibility; use rustc_session::impl_lint_pass; use rustc_span::def_id::CRATE_DEF_ID; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -193,8 +193,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc { | hir::ItemKind::Trait(..) | hir::ItemKind::TraitAlias(..) | hir::ItemKind::TyAlias(..) - | hir::ItemKind::Union(..) - | hir::ItemKind::OpaqueTy(..) => {}, + | hir::ItemKind::Union(..) => {} hir::ItemKind::ExternCrate(..) | hir::ItemKind::ForeignMod { .. } | hir::ItemKind::GlobalAsm(..) diff --git a/src/tools/clippy/clippy_lints/src/missing_fields_in_debug.rs b/src/tools/clippy/clippy_lints/src/missing_fields_in_debug.rs index 77595b121aa..fc01b6753f1 100644 --- a/src/tools/clippy/clippy_lints/src/missing_fields_in_debug.rs +++ b/src/tools/clippy/clippy_lints/src/missing_fields_in_debug.rs @@ -3,7 +3,7 @@ use std::ops::ControlFlow; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_path_lang_item; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::visitors::{for_each_expr, Visitable}; +use clippy_utils::visitors::{Visitable, for_each_expr}; use rustc_ast::LitKind; use rustc_data_structures::fx::FxHashSet; use rustc_hir::def::{DefKind, Res}; @@ -13,7 +13,7 @@ use rustc_hir::{ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{Ty, TypeckResults}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/missing_inline.rs b/src/tools/clippy/clippy_lints/src/missing_inline.rs index 33a14d8b7fe..f95a0f63fab 100644 --- a/src/tools/clippy/clippy_lints/src/missing_inline.rs +++ b/src/tools/clippy/clippy_lints/src/missing_inline.rs @@ -3,7 +3,7 @@ use rustc_ast::ast; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -130,7 +130,6 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline { | hir::ItemKind::GlobalAsm(..) | hir::ItemKind::TyAlias(..) | hir::ItemKind::Union(..) - | hir::ItemKind::OpaqueTy(..) | hir::ItemKind::ExternCrate(..) | hir::ItemKind::ForeignMod { .. } | hir::ItemKind::Impl { .. } diff --git a/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs b/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs index 0b3769ecb7c..a7452c8a3c8 100644 --- a/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs +++ b/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs @@ -1,6 +1,7 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; +use clippy_utils::macros::root_macro_call_first_node; use clippy_utils::{get_parent_expr, path_to_local, path_to_local_id}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BinOpKind, Block, Expr, ExprKind, HirId, LetStmt, Node, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; @@ -115,7 +116,7 @@ struct DivergenceVisitor<'a, 'tcx> { cx: &'a LateContext<'tcx>, } -impl<'a, 'tcx> DivergenceVisitor<'a, 'tcx> { +impl<'tcx> DivergenceVisitor<'_, 'tcx> { fn maybe_walk_expr(&mut self, e: &'tcx Expr<'_>) { match e.kind { ExprKind::Closure(..) | ExprKind::If(..) | ExprKind::Loop(..) => {}, @@ -134,6 +135,11 @@ impl<'a, 'tcx> DivergenceVisitor<'a, 'tcx> { } fn report_diverging_sub_expr(&mut self, e: &Expr<'_>) { + if let Some(macro_call) = root_macro_call_first_node(self.cx, e) { + if self.cx.tcx.item_name(macro_call.def_id).as_str() == "todo" { + return; + } + } span_lint(self.cx, DIVERGING_SUB_EXPRESSION, e.span, "sub-expression diverges"); } } @@ -142,7 +148,7 @@ fn stmt_might_diverge(stmt: &Stmt<'_>) -> bool { !matches!(stmt.kind, StmtKind::Item(..)) } -impl<'a, 'tcx> Visitor<'tcx> for DivergenceVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for DivergenceVisitor<'_, 'tcx> { fn visit_expr(&mut self, e: &'tcx Expr<'_>) { match e.kind { // fix #10776 @@ -315,7 +321,7 @@ struct ReadVisitor<'a, 'tcx> { last_expr: &'tcx Expr<'tcx>, } -impl<'a, 'tcx> Visitor<'tcx> for ReadVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for ReadVisitor<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { if expr.hir_id == self.last_expr.hir_id { return; diff --git a/src/tools/clippy/clippy_lints/src/multiple_unsafe_ops_per_block.rs b/src/tools/clippy/clippy_lints/src/multiple_unsafe_ops_per_block.rs index 0bde0da3cd8..12bcc608174 100644 --- a/src/tools/clippy/clippy_lints/src/multiple_unsafe_ops_per_block.rs +++ b/src/tools/clippy/clippy_lints/src/multiple_unsafe_ops_per_block.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::visitors::{for_each_expr, Descend, Visitable}; +use clippy_utils::visitors::{Descend, Visitable, for_each_expr}; use core::ops::ControlFlow::Continue; use hir::def::{DefKind, Res}; use hir::{BlockCheckMode, ExprKind, QPath, Safety, UnOp}; @@ -153,19 +153,16 @@ fn collect_unsafe_exprs<'tcx>( ExprKind::AssignOp(_, lhs, rhs) | ExprKind::Assign(lhs, rhs, _) => { if matches!( lhs.kind, - ExprKind::Path(QPath::Resolved( - _, - hir::Path { - res: Res::Def( - DefKind::Static { - mutability: Mutability::Mut, - .. - }, - _ - ), - .. - } - )) + ExprKind::Path(QPath::Resolved(_, hir::Path { + res: Res::Def( + DefKind::Static { + mutability: Mutability::Mut, + .. + }, + _ + ), + .. + })) ) { unsafe_ops.push(("modification of a mutable static occurs here", expr.span)); collect_unsafe_exprs(cx, rhs, unsafe_ops); diff --git a/src/tools/clippy/clippy_lints/src/mut_key.rs b/src/tools/clippy/clippy_lints/src/mut_key.rs index f52b3a6a5a1..8118c14bd4a 100644 --- a/src/tools/clippy/clippy_lints/src/mut_key.rs +++ b/src/tools/clippy/clippy_lints/src/mut_key.rs @@ -6,9 +6,9 @@ use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::impl_lint_pass; +use rustc_span::Span; use rustc_span::def_id::LocalDefId; use rustc_span::symbol::sym; -use rustc_span::Span; use std::iter; declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/mut_mut.rs b/src/tools/clippy/clippy_lints/src/mut_mut.rs index 60372121a7a..6cddd7ea813 100644 --- a/src/tools/clippy/clippy_lints/src/mut_mut.rs +++ b/src/tools/clippy/clippy_lints/src/mut_mut.rs @@ -55,7 +55,7 @@ pub struct MutVisitor<'a, 'tcx> { cx: &'a LateContext<'tcx>, } -impl<'a, 'tcx> intravisit::Visitor<'tcx> for MutVisitor<'a, 'tcx> { +impl<'tcx> intravisit::Visitor<'tcx> for MutVisitor<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx hir::Expr<'_>) { if in_external_macro(self.cx.sess(), expr.span) { return; diff --git a/src/tools/clippy/clippy_lints/src/mutable_debug_assertion.rs b/src/tools/clippy/clippy_lints/src/mutable_debug_assertion.rs index e92ba93942e..152635a5c35 100644 --- a/src/tools/clippy/clippy_lints/src/mutable_debug_assertion.rs +++ b/src/tools/clippy/clippy_lints/src/mutable_debug_assertion.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::macros::{find_assert_eq_args, root_macro_call_first_node}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BorrowKind, Expr, ExprKind, MatchSource, Mutability}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; @@ -87,7 +87,7 @@ impl<'a, 'tcx> MutArgVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for MutArgVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for MutArgVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { diff --git a/src/tools/clippy/clippy_lints/src/needless_arbitrary_self_type.rs b/src/tools/clippy/clippy_lints/src/needless_arbitrary_self_type.rs index 60c44382059..3c47d0edfdc 100644 --- a/src/tools/clippy/clippy_lints/src/needless_arbitrary_self_type.rs +++ b/src/tools/clippy/clippy_lints/src/needless_arbitrary_self_type.rs @@ -3,8 +3,8 @@ use rustc_ast::ast::{BindingMode, ByRef, Lifetime, Mutability, Param, PatKind, P use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::kw; use rustc_span::Span; +use rustc_span::symbol::kw; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/needless_bool.rs b/src/tools/clippy/clippy_lints/src/needless_bool.rs index df155a7a412..2eacd6875d6 100644 --- a/src/tools/clippy/clippy_lints/src/needless_bool.rs +++ b/src/tools/clippy/clippy_lints/src/needless_bool.rs @@ -2,16 +2,16 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::Sugg; use clippy_utils::{ - get_parent_expr, higher, is_block_like, is_else_clause, is_expn_of, is_parent_stmt, is_receiver_of_method_call, - peel_blocks, peel_blocks_with_stmt, span_extract_comment, SpanlessEq, + SpanlessEq, get_parent_expr, higher, is_block_like, is_else_clause, is_expn_of, is_parent_stmt, + is_receiver_of_method_call, peel_blocks, peel_blocks_with_stmt, span_extract_comment, }; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::source_map::Spanned; use rustc_span::Span; +use rustc_span::source_map::Spanned; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/needless_borrows_for_generic_args.rs b/src/tools/clippy/clippy_lints/src/needless_borrows_for_generic_args.rs index 32e7fde03b2..f6db12ed84e 100644 --- a/src/tools/clippy/clippy_lints/src/needless_borrows_for_generic_args.rs +++ b/src/tools/clippy/clippy_lints/src/needless_borrows_for_generic_args.rs @@ -1,10 +1,10 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::mir::{enclosing_mir, expr_local, local_assignments, used_exactly_once, PossibleBorrowerMap}; +use clippy_utils::mir::{PossibleBorrowerMap, enclosing_mir, expr_local, local_assignments, used_exactly_once}; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::{implements_trait, is_copy}; -use clippy_utils::{expr_use_ctxt, peel_n_hir_expr_refs, DefinedTy, ExprUseNode}; +use clippy_utils::{DefinedTy, ExprUseNode, expr_use_ctxt, peel_n_hir_expr_refs}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::{DefId, LocalDefId}; diff --git a/src/tools/clippy/clippy_lints/src/needless_for_each.rs b/src/tools/clippy/clippy_lints/src/needless_for_each.rs index 6390e51f916..93e20f37ef8 100644 --- a/src/tools/clippy/clippy_lints/src/needless_for_each.rs +++ b/src/tools/clippy/clippy_lints/src/needless_for_each.rs @@ -1,9 +1,9 @@ use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Block, BlockCheckMode, Closure, Expr, ExprKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_trait_method; @@ -133,7 +133,7 @@ struct RetCollector { loop_depth: u16, } -impl<'tcx> Visitor<'tcx> for RetCollector { +impl Visitor<'_> for RetCollector { fn visit_expr(&mut self, expr: &Expr<'_>) { match expr.kind { ExprKind::Ret(..) => { diff --git a/src/tools/clippy/clippy_lints/src/needless_maybe_sized.rs b/src/tools/clippy/clippy_lints/src/needless_maybe_sized.rs index 62e41088f37..bb44ff37b20 100644 --- a/src/tools/clippy/clippy_lints/src/needless_maybe_sized.rs +++ b/src/tools/clippy/clippy_lints/src/needless_maybe_sized.rs @@ -26,7 +26,7 @@ declare_clippy_lint! { /// /// // or choose alternative bounds for `T` so that it can be unsized /// ``` - #[clippy::version = "1.79.0"] + #[clippy::version = "1.81.0"] pub NEEDLESS_MAYBE_SIZED, suspicious, "a `?Sized` bound that is unusable due to a `Sized` requirement" diff --git a/src/tools/clippy/clippy_lints/src/needless_pass_by_ref_mut.rs b/src/tools/clippy/clippy_lints/src/needless_pass_by_ref_mut.rs index d543fd467ab..c2facb2fcf6 100644 --- a/src/tools/clippy/clippy_lints/src/needless_pass_by_ref_mut.rs +++ b/src/tools/clippy/clippy_lints/src/needless_pass_by_ref_mut.rs @@ -17,9 +17,9 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::mir::FakeReadCause; use rustc_middle::ty::{self, Ty, TyCtxt, UpvarId, UpvarPath}; use rustc_session::impl_lint_pass; +use rustc_span::Span; use rustc_span::def_id::LocalDefId; use rustc_span::symbol::kw; -use rustc_span::Span; use rustc_target::spec::abi::Abi; declare_clippy_lint! { @@ -311,7 +311,7 @@ struct MutablyUsedVariablesCtxt<'tcx> { tcx: TyCtxt<'tcx>, } -impl<'tcx> MutablyUsedVariablesCtxt<'tcx> { +impl MutablyUsedVariablesCtxt<'_> { fn add_mutably_used_var(&mut self, used_id: HirId) { self.mutably_used_vars.insert(used_id); } diff --git a/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs b/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs index addb4b1aee8..0775d7abdbb 100644 --- a/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs +++ b/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_self; use clippy_utils::ptr::get_spans; -use clippy_utils::source::{snippet, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::{ implements_trait, implements_trait_with_env_from_iter, is_copy, is_type_diagnostic_item, is_type_lang_item, }; @@ -19,7 +19,7 @@ use rustc_middle::ty::{self, Ty, TypeVisitableExt}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; use rustc_span::symbol::kw; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use rustc_target::spec::abi::Abi; use rustc_trait_selection::traits; use rustc_trait_selection::traits::misc::type_allowed_to_implement_copy; @@ -129,7 +129,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { }) .collect::<Vec<_>>(); - // Collect moved variables and spans which will need dereferencings from the + // Collect moved variables and spans which will need dereferencing from the // function body. let MovedVariablesCtxt { moved_vars } = { let mut ctx = MovedVariablesCtxt::default(); @@ -148,12 +148,13 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { return; } - // Ignore `self`s. - if idx == 0 { - if let PatKind::Binding(.., ident, _) = arg.pat.kind { - if ident.name == kw::SelfLower { - continue; - } + // Ignore `self`s and params whose variable name starts with an underscore + if let PatKind::Binding(.., ident, _) = arg.pat.kind { + if idx == 0 && ident.name == kw::SelfLower { + continue; + } + if ident.name.as_str().starts_with('_') { + continue; } } @@ -181,14 +182,9 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { && !is_copy(cx, ty) && ty.is_sized(cx.tcx, cx.param_env) && !allowed_traits.iter().any(|&t| { - implements_trait_with_env_from_iter( - cx.tcx, - cx.param_env, - ty, - t, - None, - [Option::<ty::GenericArg<'tcx>>::None], - ) + implements_trait_with_env_from_iter(cx.tcx, cx.param_env, ty, t, None, [Option::< + ty::GenericArg<'tcx>, + >::None]) }) && !implements_borrow_trait && !all_borrowable_trait @@ -207,7 +203,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { ) .is_ok() { - diag.span_help(span, "consider marking this type as `Copy`"); + diag.span_help(span, "or consider marking this type as `Copy`"); } } } diff --git a/src/tools/clippy/clippy_lints/src/no_effect.rs b/src/tools/clippy/clippy_lints/src/no_effect.rs index b181791699a..392cfcb813e 100644 --- a/src/tools/clippy/clippy_lints/src/no_effect.rs +++ b/src/tools/clippy/clippy_lints/src/no_effect.rs @@ -7,8 +7,8 @@ use clippy_utils::{ use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{ - is_range_literal, BinOpKind, BlockCheckMode, Expr, ExprKind, HirId, HirIdMap, ItemKind, LocalSource, Node, PatKind, - Stmt, StmtKind, UnsafeSource, + BinOpKind, BlockCheckMode, Expr, ExprKind, HirId, HirIdMap, ItemKind, LocalSource, Node, PatKind, Stmt, StmtKind, + UnsafeSource, is_range_literal, }; use rustc_infer::infer::TyCtxtInferExt as _; use rustc_lint::{LateContext, LateLintPass, LintContext}; diff --git a/src/tools/clippy/clippy_lints/src/non_copy_const.rs b/src/tools/clippy/clippy_lints/src/non_copy_const.rs index 25f547f1a43..5e20b406426 100644 --- a/src/tools/clippy/clippy_lints/src/non_copy_const.rs +++ b/src/tools/clippy/clippy_lints/src/non_copy_const.rs @@ -4,7 +4,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_in_const_context; use clippy_utils::macros::macro_backtrace; -use clippy_utils::ty::{implements_trait, InteriorMut}; +use clippy_utils::ty::{InteriorMut, implements_trait}; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; use rustc_hir::{ @@ -15,7 +15,7 @@ use rustc_middle::mir::interpret::{ErrorHandled, EvalToValTreeResult, GlobalId}; use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span, DUMMY_SP}; +use rustc_span::{DUMMY_SP, Span, sym}; use rustc_target::abi::VariantIdx; // FIXME: this is a correctness problem but there's no suitable diff --git a/src/tools/clippy/clippy_lints/src/non_expressive_names.rs b/src/tools/clippy/clippy_lints/src/non_expressive_names.rs index 832518d2d35..2fee1c72a91 100644 --- a/src/tools/clippy/clippy_lints/src/non_expressive_names.rs +++ b/src/tools/clippy/clippy_lints/src/non_expressive_names.rs @@ -3,12 +3,12 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use rustc_ast::ast::{ self, Arm, AssocItem, AssocItemKind, Attribute, Block, FnDecl, Item, ItemKind, Local, Pat, PatKind, }; -use rustc_ast::visit::{walk_block, walk_expr, walk_pat, Visitor}; +use rustc_ast::visit::{Visitor, walk_block, walk_expr, walk_pat}; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; use rustc_span::symbol::{Ident, Symbol}; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::cmp::Ordering; declare_clippy_lint! { @@ -104,7 +104,7 @@ struct SimilarNamesLocalVisitor<'a, 'tcx> { single_char_names: Vec<Vec<Ident>>, } -impl<'a, 'tcx> SimilarNamesLocalVisitor<'a, 'tcx> { +impl SimilarNamesLocalVisitor<'_, '_> { fn check_single_char_names(&self) { if self.single_char_names.last().map(Vec::len) == Some(0) { return; @@ -152,7 +152,7 @@ fn chars_are_similar(a: char, b: char) -> bool { struct SimilarNamesNameVisitor<'a, 'tcx, 'b>(&'b mut SimilarNamesLocalVisitor<'a, 'tcx>); -impl<'a, 'tcx, 'b> Visitor<'tcx> for SimilarNamesNameVisitor<'a, 'tcx, 'b> { +impl<'tcx> Visitor<'tcx> for SimilarNamesNameVisitor<'_, 'tcx, '_> { fn visit_pat(&mut self, pat: &'tcx Pat) { match pat.kind { PatKind::Ident(_, ident, _) => { @@ -189,7 +189,7 @@ fn allowed_to_be_similar(interned_name: &str, list: &[&str]) -> bool { .any(|&name| interned_name.starts_with(name) || interned_name.ends_with(name)) } -impl<'a, 'tcx, 'b> SimilarNamesNameVisitor<'a, 'tcx, 'b> { +impl SimilarNamesNameVisitor<'_, '_, '_> { fn check_short_ident(&mut self, ident: Ident) { // Ignore shadowing if self @@ -329,7 +329,7 @@ impl<'a, 'tcx, 'b> SimilarNamesNameVisitor<'a, 'tcx, 'b> { } } -impl<'a, 'b> SimilarNamesLocalVisitor<'a, 'b> { +impl SimilarNamesLocalVisitor<'_, '_> { /// ensure scoping rules work fn apply<F: for<'c> Fn(&'c mut Self)>(&mut self, f: F) { let n = self.names.len(); @@ -340,7 +340,7 @@ impl<'a, 'b> SimilarNamesLocalVisitor<'a, 'b> { } } -impl<'a, 'tcx> Visitor<'tcx> for SimilarNamesLocalVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for SimilarNamesLocalVisitor<'_, 'tcx> { fn visit_local(&mut self, local: &'tcx Local) { if let Some((init, els)) = &local.kind.init_else_opt() { self.apply(|this| walk_expr(this, init)); diff --git a/src/tools/clippy/clippy_lints/src/non_octal_unix_permissions.rs b/src/tools/clippy/clippy_lints/src/non_octal_unix_permissions.rs index cfc15d92715..3f156aa5510 100644 --- a/src/tools/clippy/clippy_lints/src/non_octal_unix_permissions.rs +++ b/src/tools/clippy/clippy_lints/src/non_octal_unix_permissions.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{snippet_with_applicability, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet_with_applicability}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/non_send_fields_in_send_ty.rs b/src/tools/clippy/clippy_lints/src/non_send_fields_in_send_ty.rs index a60988ac5db..793eb5d9456 100644 --- a/src/tools/clippy/clippy_lints/src/non_send_fields_in_send_ty.rs +++ b/src/tools/clippy/clippy_lints/src/non_send_fields_in_send_ty.rs @@ -159,7 +159,7 @@ struct NonSendField<'tcx> { generic_params: Vec<Ty<'tcx>>, } -impl<'tcx> NonSendField<'tcx> { +impl NonSendField<'_> { fn generic_params_string(&self) -> String { self.generic_params .iter() diff --git a/src/tools/clippy/clippy_lints/src/non_zero_suggestions.rs b/src/tools/clippy/clippy_lints/src/non_zero_suggestions.rs new file mode 100644 index 00000000000..90a9f2e994b --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/non_zero_suggestions.rs @@ -0,0 +1,143 @@ +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::snippet; +use rustc_ast::ast::BinOpKind; +use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::{self, Ty}; +use rustc_session::declare_lint_pass; +use rustc_span::symbol::sym; + +declare_clippy_lint! { + /// ### What it does + /// Checks for conversions from `NonZero` types to regular integer types, + /// and suggests using `NonZero` types for the target as well. + /// + /// ### Why is this bad? + /// Converting from `NonZero` types to regular integer types and then back to `NonZero` + /// types is less efficient and loses the type-safety guarantees provided by `NonZero` types. + /// Using `NonZero` types consistently can lead to more optimized code and prevent + /// certain classes of errors related to zero values. + /// + /// ### Example + /// ```no_run + /// use std::num::{NonZeroU32, NonZeroU64}; + /// + /// fn example(x: u64, y: NonZeroU32) { + /// // Bad: Converting NonZeroU32 to u64 unnecessarily + /// let r1 = x / u64::from(y.get()); + /// let r2 = x % u64::from(y.get()); + /// } + /// ``` + /// Use instead: + /// ```no_run + /// use std::num::{NonZeroU32, NonZeroU64}; + /// + /// fn example(x: u64, y: NonZeroU32) { + /// // Good: Preserving the NonZero property + /// let r1 = x / NonZeroU64::from(y); + /// let r2 = x % NonZeroU64::from(y); + /// } + /// ``` + #[clippy::version = "1.81.0"] + pub NON_ZERO_SUGGESTIONS, + restriction, + "suggests using `NonZero#` from `u#` or `i#` for more efficient and type-safe conversions" +} + +declare_lint_pass!(NonZeroSuggestions => [NON_ZERO_SUGGESTIONS]); + +impl<'tcx> LateLintPass<'tcx> for NonZeroSuggestions { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if let ExprKind::Binary(op, _, rhs) = expr.kind + && matches!(op.node, BinOpKind::Div | BinOpKind::Rem) + { + check_non_zero_conversion(cx, rhs, Applicability::MachineApplicable); + } else { + // Check if the parent expression is a binary operation + let parent_is_binary = cx.tcx.hir().parent_iter(expr.hir_id).any(|(_, node)| { + matches!(node, rustc_hir::Node::Expr(parent_expr) if matches!(parent_expr.kind, ExprKind::Binary(..))) + }); + + if !parent_is_binary { + check_non_zero_conversion(cx, expr, Applicability::MaybeIncorrect); + } + } + } +} + +fn check_non_zero_conversion(cx: &LateContext<'_>, expr: &Expr<'_>, applicability: Applicability) { + // Check if the expression is a function call with one argument + if let ExprKind::Call(func, [arg]) = expr.kind + && let ExprKind::Path(qpath) = &func.kind + && let Some(def_id) = cx.qpath_res(qpath, func.hir_id).opt_def_id() + && let ExprKind::MethodCall(rcv_path, receiver, _, _) = &arg.kind + && rcv_path.ident.name.as_str() == "get" + { + let fn_name = cx.tcx.item_name(def_id); + let target_ty = cx.typeck_results().expr_ty(expr); + let receiver_ty = cx.typeck_results().expr_ty(receiver); + + // Check if the receiver type is a NonZero type + if let ty::Adt(adt_def, _) = receiver_ty.kind() + && adt_def.is_struct() + && cx.tcx.get_diagnostic_name(adt_def.did()) == Some(sym::NonZero) + { + if let Some(target_non_zero_type) = get_target_non_zero_type(target_ty) { + let arg_snippet = get_arg_snippet(cx, arg, rcv_path); + suggest_non_zero_conversion(cx, expr, fn_name, target_non_zero_type, &arg_snippet, applicability); + } + } + } +} + +fn get_arg_snippet(cx: &LateContext<'_>, arg: &Expr<'_>, rcv_path: &rustc_hir::PathSegment<'_>) -> String { + let arg_snippet = snippet(cx, arg.span, ".."); + if let Some(index) = arg_snippet.rfind(&format!(".{}", rcv_path.ident.name)) { + arg_snippet[..index].trim().to_string() + } else { + arg_snippet.to_string() + } +} + +fn suggest_non_zero_conversion( + cx: &LateContext<'_>, + expr: &Expr<'_>, + fn_name: rustc_span::Symbol, + target_non_zero_type: &str, + arg_snippet: &str, + applicability: Applicability, +) { + let suggestion = format!("{target_non_zero_type}::{fn_name}({arg_snippet})"); + span_lint_and_sugg( + cx, + NON_ZERO_SUGGESTIONS, + expr.span, + format!("consider using `{target_non_zero_type}::{fn_name}()` for more efficient and type-safe conversion"), + "replace with", + suggestion, + applicability, + ); +} + +fn get_target_non_zero_type(ty: Ty<'_>) -> Option<&'static str> { + match ty.kind() { + ty::Uint(uint_ty) => Some(match uint_ty { + ty::UintTy::U8 => "NonZeroU8", + ty::UintTy::U16 => "NonZeroU16", + ty::UintTy::U32 => "NonZeroU32", + ty::UintTy::U64 => "NonZeroU64", + ty::UintTy::U128 => "NonZeroU128", + ty::UintTy::Usize => "NonZeroUsize", + }), + ty::Int(int_ty) => Some(match int_ty { + ty::IntTy::I8 => "NonZeroI8", + ty::IntTy::I16 => "NonZeroI16", + ty::IntTy::I32 => "NonZeroI32", + ty::IntTy::I64 => "NonZeroI64", + ty::IntTy::I128 => "NonZeroI128", + ty::IntTy::Isize => "NonZeroIsize", + }), + _ => None, + } +} diff --git a/src/tools/clippy/clippy_lints/src/nonstandard_macro_braces.rs b/src/tools/clippy/clippy_lints/src/nonstandard_macro_braces.rs index 51ba29d7389..a13391a5945 100644 --- a/src/tools/clippy/clippy_lints/src/nonstandard_macro_braces.rs +++ b/src/tools/clippy/clippy_lints/src/nonstandard_macro_braces.rs @@ -1,5 +1,5 @@ -use clippy_config::types::MacroMatcher; use clippy_config::Conf; +use clippy_config::types::MacroMatcher; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{SourceText, SpanRangeExt}; use rustc_ast::ast; @@ -8,8 +8,8 @@ use rustc_errors::Applicability; use rustc_hir::def_id::DefId; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::hygiene::{ExpnKind, MacroKind}; use rustc_span::Span; +use rustc_span::hygiene::{ExpnKind, MacroKind}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/only_used_in_recursion.rs b/src/tools/clippy/clippy_lints/src/only_used_in_recursion.rs index aadd729f32a..372128ac16f 100644 --- a/src/tools/clippy/clippy_lints/src/only_used_in_recursion.rs +++ b/src/tools/clippy/clippy_lints/src/only_used_in_recursion.rs @@ -9,8 +9,8 @@ use rustc_hir::{Body, Expr, ExprKind, HirId, ImplItem, ImplItemKind, Node, PatKi use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, ConstKind, EarlyBinder, GenericArgKind, GenericArgsRef}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::{kw, Ident}; use rustc_span::Span; +use rustc_span::symbol::{Ident, kw}; use std::iter; declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/operators/absurd_extreme_comparisons.rs b/src/tools/clippy/clippy_lints/src/operators/absurd_extreme_comparisons.rs index a0de5ea711c..dbc9948eeed 100644 --- a/src/tools/clippy/clippy_lints/src/operators/absurd_extreme_comparisons.rs +++ b/src/tools/clippy/clippy_lints/src/operators/absurd_extreme_comparisons.rs @@ -2,7 +2,7 @@ use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::LateContext; use rustc_middle::ty; -use clippy_utils::comparisons::{normalize_comparison, Rel}; +use clippy_utils::comparisons::{Rel, normalize_comparison}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::source::snippet; diff --git a/src/tools/clippy/clippy_lints/src/operators/const_comparisons.rs b/src/tools/clippy/clippy_lints/src/operators/const_comparisons.rs index c1317524396..5d94cfab3b0 100644 --- a/src/tools/clippy/clippy_lints/src/operators/const_comparisons.rs +++ b/src/tools/clippy/clippy_lints/src/operators/const_comparisons.rs @@ -7,12 +7,12 @@ use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::LateContext; use rustc_middle::ty::layout::HasTyCtxt; use rustc_middle::ty::{Ty, TypeckResults}; -use rustc_span::source_map::Spanned; use rustc_span::Span; +use rustc_span::source_map::Spanned; +use clippy_utils::SpanlessEq; use clippy_utils::diagnostics::span_lint_and_note; use clippy_utils::source::snippet; -use clippy_utils::SpanlessEq; use super::{IMPOSSIBLE_COMPARISONS, REDUNDANT_COMPARISONS}; diff --git a/src/tools/clippy/clippy_lints/src/operators/float_equality_without_abs.rs b/src/tools/clippy/clippy_lints/src/operators/float_equality_without_abs.rs index be97ad389bf..34f7dbea84e 100644 --- a/src/tools/clippy/clippy_lints/src/operators/float_equality_without_abs.rs +++ b/src/tools/clippy/clippy_lints/src/operators/float_equality_without_abs.rs @@ -6,7 +6,8 @@ use rustc_hir::def::{DefKind, Res}; use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::{sym, source_map::Spanned}; +use rustc_span::source_map::Spanned; +use rustc_span::sym; use super::FLOAT_EQUALITY_WITHOUT_ABS; diff --git a/src/tools/clippy/clippy_lints/src/option_if_let_else.rs b/src/tools/clippy/clippy_lints/src/option_if_let_else.rs index ae02d22512e..6d9e75f51d6 100644 --- a/src/tools/clippy/clippy_lints/src/option_if_let_else.rs +++ b/src/tools/clippy/clippy_lints/src/option_if_let_else.rs @@ -1,12 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::sugg::Sugg; use clippy_utils::{ - can_move_expr_to_closure, eager_or_lazy, higher, is_else_clause, is_in_const_context, is_res_lang_ctor, - peel_blocks, peel_hir_expr_while, CaptureKind, + CaptureKind, can_move_expr_to_closure, eager_or_lazy, higher, is_else_clause, is_in_const_context, + is_res_lang_ctor, peel_blocks, peel_hir_expr_while, }; use rustc_errors::Applicability; -use rustc_hir::def::Res; use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk}; +use rustc_hir::def::Res; use rustc_hir::{Arm, BindingMode, Expr, ExprKind, MatchSource, Mutability, Pat, PatKind, Path, QPath, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/panic_in_result_fn.rs b/src/tools/clippy/clippy_lints/src/panic_in_result_fn.rs index 381975199d2..eebc62e2a5a 100644 --- a/src/tools/clippy/clippy_lints/src/panic_in_result_fn.rs +++ b/src/tools/clippy/clippy_lints/src/panic_in_result_fn.rs @@ -1,15 +1,15 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::root_macro_call_first_node; -use clippy_utils::return_ty; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::visitors::{for_each_expr, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr}; +use clippy_utils::{is_inside_always_const_context, return_ty}; use core::ops::ControlFlow; use rustc_hir as hir; use rustc_hir::intravisit::FnKind; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -68,10 +68,12 @@ fn lint_impl_body<'tcx>(cx: &LateContext<'tcx>, impl_span: Span, body: &'tcx hir let Some(macro_call) = root_macro_call_first_node(cx, e) else { return ControlFlow::Continue(Descend::Yes); }; - if matches!( - cx.tcx.item_name(macro_call.def_id).as_str(), - "panic" | "assert" | "assert_eq" | "assert_ne" - ) { + if !is_inside_always_const_context(cx.tcx, e.hir_id) + && matches!( + cx.tcx.item_name(macro_call.def_id).as_str(), + "panic" | "assert" | "assert_eq" | "assert_ne" + ) + { panics.push(macro_call.span); ControlFlow::Continue(Descend::No) } else { diff --git a/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs b/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs index 4eefd0065f6..fa5b02a5a41 100644 --- a/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs +++ b/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs @@ -1,8 +1,9 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint; -use clippy_utils::is_in_test; use clippy_utils::macros::{is_panic, root_macro_call_first_node}; -use rustc_hir::Expr; +use clippy_utils::{is_in_test, match_def_path, paths}; +use rustc_hir::def::{DefKind, Res}; +use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; @@ -95,10 +96,49 @@ impl_lint_pass!(PanicUnimplemented => [UNIMPLEMENTED, UNREACHABLE, TODO, PANIC]) impl<'tcx> LateLintPass<'tcx> for PanicUnimplemented { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - let Some(macro_call) = root_macro_call_first_node(cx, expr) else { - return; - }; - if is_panic(cx, macro_call.def_id) { + if let Some(macro_call) = root_macro_call_first_node(cx, expr) { + if is_panic(cx, macro_call.def_id) { + if cx.tcx.hir().is_inside_const_context(expr.hir_id) + || self.allow_panic_in_tests && is_in_test(cx.tcx, expr.hir_id) + { + return; + } + + span_lint( + cx, + PANIC, + macro_call.span, + "`panic` should not be present in production code", + ); + return; + } + match cx.tcx.item_name(macro_call.def_id).as_str() { + "todo" => { + span_lint( + cx, + TODO, + macro_call.span, + "`todo` should not be present in production code", + ); + }, + "unimplemented" => { + span_lint( + cx, + UNIMPLEMENTED, + macro_call.span, + "`unimplemented` should not be present in production code", + ); + }, + "unreachable" => { + span_lint(cx, UNREACHABLE, macro_call.span, "usage of the `unreachable!` macro"); + }, + _ => {}, + } + } else if let ExprKind::Call(func, [_]) = expr.kind + && let ExprKind::Path(QPath::Resolved(None, expr_path)) = func.kind + && let Res::Def(DefKind::Fn, def_id) = expr_path.res + && match_def_path(cx, def_id, &paths::PANIC_ANY) + { if cx.tcx.hir().is_inside_const_context(expr.hir_id) || self.allow_panic_in_tests && is_in_test(cx.tcx, expr.hir_id) { @@ -108,32 +148,10 @@ impl<'tcx> LateLintPass<'tcx> for PanicUnimplemented { span_lint( cx, PANIC, - macro_call.span, - "`panic` should not be present in production code", + expr.span, + "`panic_any` should not be present in production code", ); return; } - match cx.tcx.item_name(macro_call.def_id).as_str() { - "todo" => { - span_lint( - cx, - TODO, - macro_call.span, - "`todo` should not be present in production code", - ); - }, - "unimplemented" => { - span_lint( - cx, - UNIMPLEMENTED, - macro_call.span, - "`unimplemented` should not be present in production code", - ); - }, - "unreachable" => { - span_lint(cx, UNREACHABLE, macro_call.span, "usage of the `unreachable!` macro"); - }, - _ => {}, - } } } diff --git a/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs b/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs index 5ca244f0141..1bddfab39c6 100644 --- a/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs +++ b/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs @@ -18,7 +18,7 @@ use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::{self, RegionKind, TyCtxt}; use rustc_session::impl_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use rustc_target::spec::abi::Abi; declare_clippy_lint! { @@ -110,7 +110,7 @@ pub struct PassByRefOrValue { avoid_breaking_exported_api: bool, } -impl<'tcx> PassByRefOrValue { +impl PassByRefOrValue { pub fn new(tcx: TyCtxt<'_>, conf: &'static Conf) -> Self { let ref_min_size = conf.trivial_copy_size_limit.unwrap_or_else(|| { let bit_width = u64::from(tcx.sess.target.pointer_width); @@ -130,7 +130,7 @@ impl<'tcx> PassByRefOrValue { } } - fn check_poly_fn(&mut self, cx: &LateContext<'tcx>, def_id: LocalDefId, decl: &FnDecl<'_>, span: Option<Span>) { + fn check_poly_fn(&mut self, cx: &LateContext<'_>, def_id: LocalDefId, decl: &FnDecl<'_>, span: Option<Span>) { if self.avoid_breaking_exported_api && cx.effective_visibilities.is_exported(def_id) { return; } diff --git a/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs b/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs index d7fa48c1e38..9f84686a0b1 100644 --- a/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs +++ b/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::path_to_local_id; -use clippy_utils::source::{snippet, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::is_type_diagnostic_item; use rustc_ast::{LitKind, StrStyle}; use rustc_errors::Applicability; @@ -9,7 +9,7 @@ use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, LetStmt, PatKind, QPa use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; declare_clippy_lint! { /// ### What it does @@ -60,7 +60,7 @@ struct PathbufPushSearcher<'tcx> { err_span: Span, } -impl<'tcx> PathbufPushSearcher<'tcx> { +impl PathbufPushSearcher<'_> { /// Try to generate a suggestion with `PathBuf::from`. /// Returns `None` if the suggestion would be invalid. fn gen_pathbuf_from(&self, cx: &LateContext<'_>) -> Option<String> { diff --git a/src/tools/clippy/clippy_lints/src/pattern_type_mismatch.rs b/src/tools/clippy/clippy_lints/src/pattern_type_mismatch.rs index c1296b04387..42fbba8ef6d 100644 --- a/src/tools/clippy/clippy_lints/src/pattern_type_mismatch.rs +++ b/src/tools/clippy/clippy_lints/src/pattern_type_mismatch.rs @@ -1,13 +1,13 @@ use clippy_utils::diagnostics::span_lint_and_then; use rustc_hir::{ - intravisit, Body, Expr, ExprKind, FnDecl, LetExpr, LocalSource, Mutability, Pat, PatKind, Stmt, StmtKind, + Body, Expr, ExprKind, FnDecl, LetExpr, LocalSource, Mutability, Pat, PatKind, Stmt, StmtKind, intravisit, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/pointers_in_nomem_asm_block.rs b/src/tools/clippy/clippy_lints/src/pointers_in_nomem_asm_block.rs new file mode 100644 index 00000000000..385f634a150 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/pointers_in_nomem_asm_block.rs @@ -0,0 +1,88 @@ +use clippy_utils::diagnostics::span_lint_and_then; +use rustc_ast::InlineAsmOptions; +use rustc_hir::{Expr, ExprKind, InlineAsm, InlineAsmOperand}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_session::declare_lint_pass; +use rustc_span::Span; + +declare_clippy_lint! { + /// ### What it does + /// Checks if any pointer is being passed to an asm! block with `nomem` option. + /// + /// ### Why is this bad? + /// `nomem` forbids any reads or writes to memory and passing a pointer suggests + /// that either of those will happen. + /// + /// ### Example + /// ```no_run + /// fn f(p: *mut u32) { + /// unsafe { core::arch::asm!("mov [{p}], 42", p = in(reg) p, options(nomem, nostack)); } + /// } + /// ``` + /// Use instead: + /// ```no_run + /// fn f(p: *mut u32) { + /// unsafe { core::arch::asm!("mov [{p}], 42", p = in(reg) p, options(nostack)); } + /// } + /// ``` + #[clippy::version = "1.81.0"] + pub POINTERS_IN_NOMEM_ASM_BLOCK, + suspicious, + "pointers in nomem asm block" +} + +declare_lint_pass!(PointersInNomemAsmBlock => [POINTERS_IN_NOMEM_ASM_BLOCK]); + +impl<'tcx> LateLintPass<'tcx> for PointersInNomemAsmBlock { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'tcx>) { + if let ExprKind::InlineAsm(asm) = &expr.kind { + check_asm(cx, asm); + } + } +} + +fn check_asm(cx: &LateContext<'_>, asm: &InlineAsm<'_>) { + if !asm.options.contains(InlineAsmOptions::NOMEM) { + return; + } + + let spans = asm + .operands + .iter() + .filter(|(op, _span)| has_in_operand_pointer(cx, op)) + .map(|(_op, span)| *span) + .collect::<Vec<Span>>(); + + if spans.is_empty() { + return; + } + + span_lint_and_then( + cx, + POINTERS_IN_NOMEM_ASM_BLOCK, + spans, + "passing pointers to nomem asm block", + additional_notes, + ); +} + +fn has_in_operand_pointer(cx: &LateContext<'_>, asm_op: &InlineAsmOperand<'_>) -> bool { + let asm_in_expr = match asm_op { + InlineAsmOperand::SymStatic { .. } + | InlineAsmOperand::Out { .. } + | InlineAsmOperand::Const { .. } + | InlineAsmOperand::SymFn { .. } + | InlineAsmOperand::Label { .. } => return false, + InlineAsmOperand::SplitInOut { in_expr, .. } => in_expr, + InlineAsmOperand::In { expr, .. } | InlineAsmOperand::InOut { expr, .. } => expr, + }; + + // This checks for raw ptrs, refs and function pointers - the last one + // also technically counts as reading memory. + cx.typeck_results().expr_ty(asm_in_expr).is_any_ptr() +} + +fn additional_notes(diag: &mut rustc_errors::Diag<'_, ()>) { + diag.note("`nomem` means that no memory write or read happens inside the asm! block"); + diag.note("if this is intentional and no pointers are read or written to, consider allowing the lint"); +} diff --git a/src/tools/clippy/clippy_lints/src/ptr.rs b/src/tools/clippy/clippy_lints/src/ptr.rs index 125f694996c..bb8a9b6fca8 100644 --- a/src/tools/clippy/clippy_lints/src/ptr.rs +++ b/src/tools/clippy/clippy_lints/src/ptr.rs @@ -1,13 +1,11 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::source::SpanRangeExt; -use clippy_utils::ty::expr_sig; use clippy_utils::visitors::contains_unsafe_block; use clippy_utils::{get_expr_use_or_unification_node, is_lint_allowed, path_def_id, path_to_local}; use hir::LifetimeName; use rustc_errors::{Applicability, MultiSpan}; -use rustc_hir::def_id::DefId; use rustc_hir::hir_id::{HirId, HirIdMap}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{ self as hir, AnonConst, BinOpKind, BindingMode, Body, Expr, ExprKind, FnRetTy, FnSig, GenericArg, ImplItemKind, ItemKind, Lifetime, Mutability, Node, Param, PatKind, QPath, Safety, TraitFn, TraitItem, TraitItemKind, TyKind, @@ -19,7 +17,7 @@ use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, Binder, ClauseKind, ExistentialPredicate, List, PredicateKind, Ty}; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use rustc_target::spec::abi::Abi; use rustc_trait_selection::infer::InferCtxtExt as _; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; @@ -34,7 +32,7 @@ declare_clippy_lint! { /// with the appropriate `.to_owned()`/`to_string()` calls. /// /// ### Why is this bad? - /// Requiring the argument to be of the specific size + /// Requiring the argument to be of the specific type /// makes the function less useful for no benefit; slices in the form of `&[T]` /// or `&str` usually suffice and can be obtained from other types, too. /// @@ -273,14 +271,18 @@ fn check_invalid_ptr_usage<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { && let Some(fun_def_id) = cx.qpath_res(qpath, fun.hir_id).opt_def_id() && let Some(name) = cx.tcx.get_diagnostic_name(fun_def_id) { + // TODO: `ptr_slice_from_raw_parts` and its mutable variant should probably still be linted + // conditionally based on how the return value is used, but not universally like the other + // functions since there are valid uses for null slice pointers. + // + // See: https://github.com/rust-lang/rust-clippy/pull/13452/files#r1773772034 + // `arg` positions where null would cause U.B. let arg_indices: &[_] = match name { sym::ptr_read | sym::ptr_read_unaligned | sym::ptr_read_volatile | sym::ptr_replace - | sym::ptr_slice_from_raw_parts - | sym::ptr_slice_from_raw_parts_mut | sym::ptr_write | sym::ptr_write_bytes | sym::ptr_write_unaligned @@ -323,7 +325,6 @@ struct PtrArg<'tcx> { idx: usize, emission_id: HirId, span: Span, - ty_did: DefId, ty_name: Symbol, method_renames: &'static [(&'static str, &'static str)], ref_prefix: RefPrefix, @@ -411,7 +412,6 @@ impl<'tcx> DerefTy<'tcx> { } } -#[expect(clippy::too_many_lines)] fn check_fn_args<'cx, 'tcx: 'cx>( cx: &'cx LateContext<'tcx>, fn_sig: ty::FnSig<'tcx>, @@ -514,7 +514,6 @@ fn check_fn_args<'cx, 'tcx: 'cx>( idx: i, emission_id, span: hir_ty.span, - ty_did: adt.did(), ty_name: name.ident.name, method_renames, ref_prefix: RefPrefix { lt: *lt, mutability }, @@ -610,65 +609,50 @@ fn check_ptr_arg_usage<'tcx>(cx: &LateContext<'tcx>, body: &Body<'tcx>, args: &[ set_skip_flag(); } }, - Some((Node::Expr(e), child_id)) => match e.kind { - ExprKind::Call(f, expr_args) => { - let i = expr_args.iter().position(|arg| arg.hir_id == child_id).unwrap_or(0); - if expr_sig(self.cx, f).and_then(|sig| sig.input(i)).map_or(true, |ty| { - match *ty.skip_binder().peel_refs().kind() { - ty::Dynamic(preds, _, _) => !matches_preds(self.cx, args.deref_ty.ty(self.cx), preds), - ty::Param(_) => true, - ty::Adt(def, _) => def.did() == args.ty_did, - _ => false, - } - }) { - // Passed to a function taking the non-dereferenced type. - set_skip_flag(); - } - }, - ExprKind::MethodCall(name, self_arg, expr_args, _) => { - let i = iter::once(self_arg) - .chain(expr_args.iter()) - .position(|arg| arg.hir_id == child_id) - .unwrap_or(0); - if i == 0 { - // Check if the method can be renamed. - let name = name.ident.as_str(); - if let Some((_, replacement)) = args.method_renames.iter().find(|&&(x, _)| x == name) { - result.replacements.push(PtrArgReplacement { - expr_span: e.span, - self_span: self_arg.span, - replacement, - }); - return; - } + Some((Node::Expr(use_expr), child_id)) => { + if let ExprKind::Index(e, ..) = use_expr.kind + && e.hir_id == child_id + { + // Indexing works with both owned and its dereferenced type + return; + } + + if let ExprKind::MethodCall(name, receiver, ..) = use_expr.kind + && receiver.hir_id == child_id + { + let name = name.ident.as_str(); + + // Check if the method can be renamed. + if let Some((_, replacement)) = args.method_renames.iter().find(|&&(x, _)| x == name) { + result.replacements.push(PtrArgReplacement { + expr_span: use_expr.span, + self_span: receiver.span, + replacement, + }); + return; } - let Some(id) = self.cx.typeck_results().type_dependent_def_id(e.hir_id) else { - set_skip_flag(); + // Some methods exist on both `[T]` and `Vec<T>`, such as `len`, where the receiver type + // doesn't coerce to a slice and our adjusted type check below isn't enough, + // but it would still be valid to call with a slice + if is_allowed_vec_method(self.cx, use_expr) { return; - }; - - match *self.cx.tcx.fn_sig(id).instantiate_identity().skip_binder().inputs()[i] - .peel_refs() - .kind() - { - ty::Dynamic(preds, _, _) if !matches_preds(self.cx, args.deref_ty.ty(self.cx), preds) => { - set_skip_flag(); - }, - ty::Param(_) => { - set_skip_flag(); - }, - // If the types match check for methods which exist on both types. e.g. `Vec::len` and - // `slice::len` - ty::Adt(def, _) if def.did() == args.ty_did && !is_allowed_vec_method(self.cx, e) => { - set_skip_flag(); - }, - _ => (), } - }, - // Indexing is fine for currently supported types. - ExprKind::Index(e, _, _) if e.hir_id == child_id => (), - _ => set_skip_flag(), + } + + let deref_ty = args.deref_ty.ty(self.cx); + let adjusted_ty = self.cx.typeck_results().expr_ty_adjusted(e).peel_refs(); + if adjusted_ty == deref_ty { + return; + } + + if let ty::Dynamic(preds, ..) = adjusted_ty.kind() + && matches_preds(self.cx, deref_ty, preds) + { + return; + } + + set_skip_flag(); }, _ => set_skip_flag(), } diff --git a/src/tools/clippy/clippy_lints/src/pub_underscore_fields.rs b/src/tools/clippy/clippy_lints/src/pub_underscore_fields.rs index 77b707567e4..db03657c9af 100644 --- a/src/tools/clippy/clippy_lints/src/pub_underscore_fields.rs +++ b/src/tools/clippy/clippy_lints/src/pub_underscore_fields.rs @@ -1,5 +1,5 @@ -use clippy_config::types::PubUnderscoreFieldsBehaviour; use clippy_config::Conf; +use clippy_config::types::PubUnderscoreFieldsBehaviour; use clippy_utils::attrs::is_doc_hidden; use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::is_path_lang_item; diff --git a/src/tools/clippy/clippy_lints/src/question_mark.rs b/src/tools/clippy/clippy_lints/src/question_mark.rs index e1e3ded2c79..aa9a9001afb 100644 --- a/src/tools/clippy/clippy_lints/src/question_mark.rs +++ b/src/tools/clippy/clippy_lints/src/question_mark.rs @@ -1,8 +1,8 @@ use crate::manual_let_else::MANUAL_LET_ELSE; use crate::question_mark_used::QUESTION_MARK_USED; +use clippy_config::Conf; use clippy_config::msrvs::Msrv; use clippy_config::types::MatchLintBehaviour; -use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; @@ -12,8 +12,8 @@ use clippy_utils::{ span_contains_comment, }; use rustc_errors::Applicability; -use rustc_hir::def::Res; use rustc_hir::LangItem::{self, OptionNone, OptionSome, ResultErr, ResultOk}; +use rustc_hir::def::Res; use rustc_hir::{ BindingMode, Block, Body, ByRef, Expr, ExprKind, LetStmt, Mutability, Node, PatKind, PathSegment, QPath, Stmt, StmtKind, diff --git a/src/tools/clippy/clippy_lints/src/ranges.rs b/src/tools/clippy/clippy_lints/src/ranges.rs index 81189fe517c..21cd3367262 100644 --- a/src/tools/clippy/clippy_lints/src/ranges.rs +++ b/src/tools/clippy/clippy_lints/src/ranges.rs @@ -1,8 +1,8 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_then}; -use clippy_utils::source::{snippet, snippet_with_applicability, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet, snippet_with_applicability}; use clippy_utils::sugg::Sugg; use clippy_utils::{get_parent_expr, higher, is_in_const_context, is_integer_const, path_to_local}; use rustc_ast::ast::RangeLimits; @@ -11,8 +11,8 @@ use rustc_hir::{BinOpKind, Expr, ExprKind, HirId}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::source_map::Spanned; use rustc_span::Span; +use rustc_span::source_map::Spanned; use std::cmp::Ordering; declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/rc_clone_in_vec_init.rs b/src/tools/clippy/clippy_lints/src/rc_clone_in_vec_init.rs index d0b45b59526..e877f5d6ed4 100644 --- a/src/tools/clippy/clippy_lints/src/rc_clone_in_vec_init.rs +++ b/src/tools/clippy/clippy_lints/src/rc_clone_in_vec_init.rs @@ -8,7 +8,7 @@ use rustc_hir::{Expr, ExprKind, QPath, TyKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span, Symbol}; +use rustc_span::{Span, Symbol, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs b/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs index 7f4735c6a88..6bd68dd4109 100644 --- a/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs +++ b/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs @@ -1,13 +1,13 @@ use clippy_utils::diagnostics::{span_lint_hir, span_lint_hir_and_then}; use clippy_utils::get_enclosing_block; -use clippy_utils::higher::{get_vec_init_kind, VecInitKind}; +use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::source::snippet; use hir::{Expr, ExprKind, HirId, LetStmt, PatKind, PathSegment, QPath, StmtKind}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::def::Res; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/redundant_clone.rs b/src/tools/clippy/clippy_lints/src/redundant_clone.rs index 4e24ddad83a..b9e0106fc86 100644 --- a/src/tools/clippy/clippy_lints/src/redundant_clone.rs +++ b/src/tools/clippy/clippy_lints/src/redundant_clone.rs @@ -1,17 +1,17 @@ use clippy_utils::diagnostics::{span_lint_hir, span_lint_hir_and_then}; -use clippy_utils::mir::{visit_local_usage, LocalUsage, PossibleBorrowerMap}; +use clippy_utils::fn_has_unsatisfiable_preds; +use clippy_utils::mir::{LocalUsage, PossibleBorrowerMap, visit_local_usage}; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::{has_drop, is_copy, is_type_diagnostic_item, is_type_lang_item, walk_ptrs_ty_depth}; -use clippy_utils::fn_has_unsatisfiable_preds; use rustc_errors::Applicability; use rustc_hir::intravisit::FnKind; -use rustc_hir::{def_id, Body, FnDecl, LangItem}; +use rustc_hir::{Body, FnDecl, LangItem, def_id}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::mir; use rustc_middle::ty::{self, Ty}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, BytePos, Span}; +use rustc_span::{BytePos, Span, sym}; macro_rules! unwrap_or_continue { ($x:expr) => { @@ -349,14 +349,10 @@ fn visit_clone_usage(cloned: mir::Local, clone: mir::Local, mir: &mir::Body<'_>, local_use_locs: _, local_consume_or_mutate_locs: clone_consume_or_mutate_locs, }, - )) = visit_local_usage( - &[cloned, clone], - mir, - mir::Location { - block: bb, - statement_index: mir.basic_blocks[bb].statements.len(), - }, - ) + )) = visit_local_usage(&[cloned, clone], mir, mir::Location { + block: bb, + statement_index: mir.basic_blocks[bb].statements.len(), + }) .map(|mut vec| (vec.remove(0), vec.remove(0))) { CloneUsage { diff --git a/src/tools/clippy/clippy_lints/src/redundant_closure_call.rs b/src/tools/clippy/clippy_lints/src/redundant_closure_call.rs index bad9b979203..41a44de536b 100644 --- a/src/tools/clippy/clippy_lints/src/redundant_closure_call.rs +++ b/src/tools/clippy/clippy_lints/src/redundant_closure_call.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::intravisit::{Visitor as HirVisitor, Visitor}; use rustc_hir::{ - intravisit as hir_visit, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, ExprKind, Node, + ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, ExprKind, Node, intravisit as hir_visit, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::hir::nested_filter; @@ -228,7 +228,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClosureCall { path: &'tcx hir::Path<'tcx>, count: usize, } - impl<'a, 'tcx> Visitor<'tcx> for ClosureUsageCount<'a, 'tcx> { + impl<'tcx> Visitor<'tcx> for ClosureUsageCount<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) { diff --git a/src/tools/clippy/clippy_lints/src/redundant_else.rs b/src/tools/clippy/clippy_lints/src/redundant_else.rs index 3bdf13dbbea..6a1d40334e7 100644 --- a/src/tools/clippy/clippy_lints/src/redundant_else.rs +++ b/src/tools/clippy/clippy_lints/src/redundant_else.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_help; use rustc_ast::ast::{Block, Expr, ExprKind, Stmt, StmtKind}; -use rustc_ast::visit::{walk_expr, Visitor}; +use rustc_ast::visit::{Visitor, walk_expr}; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/redundant_field_names.rs b/src/tools/clippy/clippy_lints/src/redundant_field_names.rs index 0e637538615..d0dbff081f9 100644 --- a/src/tools/clippy/clippy_lints/src/redundant_field_names.rs +++ b/src/tools/clippy/clippy_lints/src/redundant_field_names.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use rustc_ast::ast::{Expr, ExprKind}; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/redundant_locals.rs b/src/tools/clippy/clippy_lints/src/redundant_locals.rs index d94ca5bc7ec..4f46ca3c715 100644 --- a/src/tools/clippy/clippy_lints/src/redundant_locals.rs +++ b/src/tools/clippy/clippy_lints/src/redundant_locals.rs @@ -9,8 +9,8 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty::UpvarCapture; use rustc_session::declare_lint_pass; -use rustc_span::symbol::Ident; use rustc_span::DesugaringKind; +use rustc_span::symbol::Ident; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs b/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs index d6e741dd974..b27bb2e78af 100644 --- a/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs +++ b/src/tools/clippy/clippy_lints/src/redundant_static_lifetimes.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use rustc_ast::ast::{ConstItem, Item, ItemKind, StaticItem, Ty, TyKind}; diff --git a/src/tools/clippy/clippy_lints/src/reference.rs b/src/tools/clippy/clippy_lints/src/reference.rs index 2b4ef21fc48..4bff37216ed 100644 --- a/src/tools/clippy/clippy_lints/src/reference.rs +++ b/src/tools/clippy/clippy_lints/src/reference.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{snippet_with_applicability, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet_with_applicability}; use rustc_ast::ast::{Expr, ExprKind, Mutability, UnOp}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/regex.rs b/src/tools/clippy/clippy_lints/src/regex.rs index f6ef02b7c23..12cbdb854ef 100644 --- a/src/tools/clippy/clippy_lints/src/regex.rs +++ b/src/tools/clippy/clippy_lints/src/regex.rs @@ -3,7 +3,7 @@ use std::fmt::Display; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_help}; use clippy_utils::source::SpanRangeExt; -use clippy_utils::{def_path_def_ids, path_def_id, paths}; +use clippy_utils::{def_path_res_with_base, find_crates, path_def_id, paths}; use rustc_ast::ast::{LitKind, StrStyle}; use rustc_hir::def_id::DefIdMap; use rustc_hir::{BorrowKind, Expr, ExprKind}; @@ -75,11 +75,14 @@ impl<'tcx> LateLintPass<'tcx> for Regex { // We don't use `match_def_path` here because that relies on matching the exact path, which changed // between regex 1.8 and 1.9 // - // `def_path_def_ids` will resolve through re-exports but is relatively heavy, so we only perform - // the operation once and store the results - let mut resolve = |path, kind| { - for id in def_path_def_ids(cx.tcx, path) { - self.definitions.insert(id, kind); + // `def_path_res_with_base` will resolve through re-exports but is relatively heavy, so we only + // perform the operation once and store the results + let regex_crates = find_crates(cx.tcx, sym!(regex)); + let mut resolve = |path: &[&str], kind: RegexKind| { + for res in def_path_res_with_base(cx.tcx, regex_crates.clone(), &path[1..]) { + if let Some(id) = res.opt_def_id() { + self.definitions.insert(id, kind); + } } }; diff --git a/src/tools/clippy/clippy_lints/src/repeat_vec_with_capacity.rs b/src/tools/clippy/clippy_lints/src/repeat_vec_with_capacity.rs index 08de10f69b0..f54cafffb83 100644 --- a/src/tools/clippy/clippy_lints/src/repeat_vec_with_capacity.rs +++ b/src/tools/clippy/clippy_lints/src/repeat_vec_with_capacity.rs @@ -8,7 +8,7 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs b/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs index caf3fb8707d..6157adad059 100644 --- a/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs +++ b/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::higher::{get_vec_init_kind, VecInitKind}; +use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::source::snippet; use clippy_utils::{is_from_proc_macro, path_to_local_id}; use rustc_errors::Applicability; diff --git a/src/tools/clippy/clippy_lints/src/return_self_not_must_use.rs b/src/tools/clippy/clippy_lints/src/return_self_not_must_use.rs index 5962e8be959..42d9cf2c88c 100644 --- a/src/tools/clippy/clippy_lints/src/return_self_not_must_use.rs +++ b/src/tools/clippy/clippy_lints/src/return_self_not_must_use.rs @@ -7,7 +7,7 @@ use rustc_hir::{Body, FnDecl, OwnerId, TraitItem, TraitItemKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/returns.rs b/src/tools/clippy/clippy_lints/src/returns.rs index 5ce091b7a7a..f6f75d8c798 100644 --- a/src/tools/clippy/clippy_lints/src/returns.rs +++ b/src/tools/clippy/clippy_lints/src/returns.rs @@ -1,16 +1,16 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_hir_and_then}; -use clippy_utils::source::{snippet_with_context, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, snippet_with_context}; use clippy_utils::sugg::has_enclosing_paren; -use clippy_utils::visitors::{for_each_expr, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr, for_each_unconsumed_temporary}; use clippy_utils::{ binary_expr_needs_parentheses, fn_def_id, is_from_proc_macro, is_inside_let_else, is_res_lang_ctor, path_res, path_to_local_id, span_contains_cfg, span_find_starting_semi, }; use core::ops::ControlFlow; -use rustc_ast::NestedMetaItem; +use rustc_ast::MetaItemInner; use rustc_errors::Applicability; -use rustc_hir::intravisit::FnKind; use rustc_hir::LangItem::ResultErr; +use rustc_hir::intravisit::FnKind; use rustc_hir::{ Block, Body, Expr, ExprKind, FnDecl, HirId, ItemKind, LangItem, MatchSource, Node, OwnerNode, PatKind, QPath, Stmt, StmtKind, @@ -21,7 +21,7 @@ use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::{self, GenericArgKind, Ty}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, BytePos, Pos, Span}; +use rustc_span::{BytePos, Pos, Span, sym}; use std::borrow::Cow; use std::fmt::Display; @@ -140,7 +140,7 @@ enum RetReplacement<'tcx> { Expr(Cow<'tcx, str>, Applicability), } -impl<'tcx> RetReplacement<'tcx> { +impl RetReplacement<'_> { fn sugg_help(&self) -> &'static str { match self { Self::Empty | Self::Expr(..) => "remove `return`", @@ -158,7 +158,7 @@ impl<'tcx> RetReplacement<'tcx> { } } -impl<'tcx> Display for RetReplacement<'tcx> { +impl Display for RetReplacement<'_> { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { match self { Self::Empty => write!(f, ""), @@ -389,10 +389,24 @@ fn check_final_expr<'tcx>( } }; - let borrows = inner.map_or(false, |inner| last_statement_borrows(cx, inner)); - if borrows { - return; + if let Some(inner) = inner { + if for_each_unconsumed_temporary(cx, inner, |temporary_ty| { + if temporary_ty.has_significant_drop(cx.tcx, cx.param_env) + && temporary_ty + .walk() + .any(|arg| matches!(arg.unpack(), GenericArgKind::Lifetime(re) if !re.is_static())) + { + ControlFlow::Break(()) + } else { + ControlFlow::Continue(()) + } + }) + .is_break() + { + return; + } } + if ret_span.from_expansion() { return; } @@ -407,7 +421,7 @@ fn check_final_expr<'tcx>( if matches!(Level::from_attr(attr), Some(Level::Expect(_))) && let metas = attr.meta_item_list() && let Some(lst) = metas - && let [NestedMetaItem::MetaItem(meta_item)] = lst.as_slice() + && let [MetaItemInner::MetaItem(meta_item), ..] = lst.as_slice() && let [tool, lint_name] = meta_item.path.segments.as_slice() && tool.ident.name == sym::clippy && matches!( diff --git a/src/tools/clippy/clippy_lints/src/same_name_method.rs b/src/tools/clippy/clippy_lints/src/same_name_method.rs index 508f3ae6def..8d31641d483 100644 --- a/src/tools/clippy/clippy_lints/src/same_name_method.rs +++ b/src/tools/clippy/clippy_lints/src/same_name_method.rs @@ -5,8 +5,8 @@ use rustc_hir::{HirId, Impl, ItemKind, Node, Path, QPath, TraitRef, TyKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::AssocKind; use rustc_session::declare_lint_pass; -use rustc_span::symbol::Symbol; use rustc_span::Span; +use rustc_span::symbol::Symbol; use std::collections::{BTreeMap, BTreeSet}; declare_clippy_lint! { @@ -62,13 +62,10 @@ impl<'tcx> LateLintPass<'tcx> for SameNameMethod { && let TyKind::Path(QPath::Resolved(_, Path { res, .. })) = self_ty.kind { if !map.contains_key(res) { - map.insert( - *res, - ExistingName { - impl_methods: BTreeMap::new(), - trait_methods: BTreeMap::new(), - }, - ); + map.insert(*res, ExistingName { + impl_methods: BTreeMap::new(), + trait_methods: BTreeMap::new(), + }); } let existing_name = map.get_mut(res).unwrap(); diff --git a/src/tools/clippy/clippy_lints/src/set_contains_or_insert.rs b/src/tools/clippy/clippy_lints/src/set_contains_or_insert.rs index e6fe7649397..1185d67b125 100644 --- a/src/tools/clippy/clippy_lints/src/set_contains_or_insert.rs +++ b/src/tools/clippy/clippy_lints/src/set_contains_or_insert.rs @@ -3,12 +3,12 @@ use std::ops::ControlFlow; use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::for_each_expr; -use clippy_utils::{higher, peel_hir_expr_while, SpanlessEq}; +use clippy_utils::{SpanlessEq, higher, peel_hir_expr_while}; use rustc_hir::{Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -42,7 +42,7 @@ declare_clippy_lint! { /// println!("inserted {value:?}"); /// } /// ``` - #[clippy::version = "1.80.0"] + #[clippy::version = "1.81.0"] pub SET_CONTAINS_OR_INSERT, nursery, "call to `<set>::contains` followed by `<set>::insert`" diff --git a/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs b/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs index 979d6dc77ae..0eece922143 100644 --- a/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs +++ b/src/tools/clippy/clippy_lints/src/significant_drop_tightening.rs @@ -4,13 +4,13 @@ use clippy_utils::{expr_or_init, get_attr, path_to_local, peel_hir_expr_unary}; use rustc_data_structures::fx::{FxHashMap, FxIndexMap}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{self as hir, HirId}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::{GenericArgKind, Ty}; use rustc_session::impl_lint_pass; use rustc_span::symbol::Ident; -use rustc_span::{sym, Span, DUMMY_SP}; +use rustc_span::{DUMMY_SP, Span, sym}; use std::borrow::Cow; use std::collections::hash_map::Entry; @@ -249,7 +249,7 @@ impl<'ap, 'lc, 'others, 'stmt, 'tcx> StmtsChecker<'ap, 'lc, 'others, 'stmt, 'tcx } } -impl<'ap, 'lc, 'others, 'stmt, 'tcx> Visitor<'tcx> for StmtsChecker<'ap, 'lc, 'others, 'stmt, 'tcx> { +impl<'tcx> Visitor<'tcx> for StmtsChecker<'_, '_, '_, '_, 'tcx> { fn visit_block(&mut self, block: &'tcx hir::Block<'tcx>) { self.ap.curr_block_hir_id = block.hir_id; self.ap.curr_block_span = block.span; diff --git a/src/tools/clippy/clippy_lints/src/single_component_path_imports.rs b/src/tools/clippy/clippy_lints/src/single_component_path_imports.rs index acf44a9bb5a..9fdee8543a8 100644 --- a/src/tools/clippy/clippy_lints/src/single_component_path_imports.rs +++ b/src/tools/clippy/clippy_lints/src/single_component_path_imports.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg}; use rustc_ast::node_id::{NodeId, NodeMap}; use rustc_ast::ptr::P; -use rustc_ast::visit::{walk_expr, Visitor}; +use rustc_ast::visit::{Visitor, walk_expr}; use rustc_ast::{Crate, Expr, ExprKind, Item, ItemKind, MacroDef, ModKind, Ty, TyKind, UseTreeKind}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; @@ -102,7 +102,7 @@ struct ImportUsageVisitor { imports_referenced_with_self: Vec<Symbol>, } -impl<'tcx> Visitor<'tcx> for ImportUsageVisitor { +impl Visitor<'_> for ImportUsageVisitor { fn visit_expr(&mut self, expr: &Expr) { if let ExprKind::Path(_, path) = &expr.kind && path.segments.len() > 1 diff --git a/src/tools/clippy/clippy_lints/src/slow_vector_initialization.rs b/src/tools/clippy/clippy_lints/src/slow_vector_initialization.rs index 04c16281ec4..fc799cad67e 100644 --- a/src/tools/clippy/clippy_lints/src/slow_vector_initialization.rs +++ b/src/tools/clippy/clippy_lints/src/slow_vector_initialization.rs @@ -2,11 +2,10 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::matching_root_macro_call; use clippy_utils::sugg::Sugg; use clippy_utils::{ - get_enclosing_block, is_integer_literal, is_path_diagnostic_item, path_to_local, - path_to_local_id, SpanlessEq, + SpanlessEq, get_enclosing_block, is_integer_literal, is_path_diagnostic_item, path_to_local, path_to_local_id, }; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_block, walk_expr, walk_stmt, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_stmt}; use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, PatKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; @@ -230,7 +229,7 @@ struct VectorInitializationVisitor<'a, 'tcx> { initialization_found: bool, } -impl<'a, 'tcx> VectorInitializationVisitor<'a, 'tcx> { +impl<'tcx> VectorInitializationVisitor<'_, 'tcx> { /// Checks if the given expression is extending a vector with `repeat(0).take(..)` fn search_slow_extend_filling(&mut self, expr: &'tcx Expr<'_>) { if self.initialization_found @@ -300,7 +299,7 @@ impl<'a, 'tcx> VectorInitializationVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> Visitor<'tcx> for VectorInitializationVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for VectorInitializationVisitor<'_, 'tcx> { fn visit_stmt(&mut self, stmt: &'tcx Stmt<'_>) { if self.initialization_found { match stmt.kind { diff --git a/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs b/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs index 44283a49e84..8dd99858793 100644 --- a/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs +++ b/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::Msrv; use clippy_config::Conf; +use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_from_proc_macro; use rustc_attr::{StabilityLevel, StableSince}; @@ -11,7 +11,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; use rustc_span::symbol::kw; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/string_patterns.rs b/src/tools/clippy/clippy_lints/src/string_patterns.rs index 7e211d64da1..ba2ddac2ec3 100644 --- a/src/tools/clippy/clippy_lints/src/string_patterns.rs +++ b/src/tools/clippy/clippy_lints/src/string_patterns.rs @@ -1,13 +1,13 @@ use std::ops::ControlFlow; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::eager_or_lazy::switch_to_eager_eval; use clippy_utils::macros::matching_root_macro_call; use clippy_utils::path_to_local_id; use clippy_utils::source::{snippet, str_literal_to_char_literal}; -use clippy_utils::visitors::{for_each_expr, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr}; use itertools::Itertools; use rustc_ast::{BinOpKind, LitKind}; use rustc_errors::Applicability; @@ -15,7 +15,7 @@ use rustc_hir::{Expr, ExprKind, PatKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -33,7 +33,7 @@ declare_clippy_lint! { /// ```no_run /// "Hello World!".trim_end_matches(['.', ',', '!', '?']); /// ``` - #[clippy::version = "1.80.0"] + #[clippy::version = "1.81.0"] pub MANUAL_PATTERN_CHAR_COMPARISON, style, "manual char comparison in string patterns" diff --git a/src/tools/clippy/clippy_lints/src/strings.rs b/src/tools/clippy/clippy_lints/src/strings.rs index 6ca4ca000e9..1fb82b66ab8 100644 --- a/src/tools/clippy/clippy_lints/src/strings.rs +++ b/src/tools/clippy/clippy_lints/src/strings.rs @@ -2,8 +2,8 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_the use clippy_utils::source::{snippet, snippet_with_applicability}; use clippy_utils::ty::is_type_lang_item; use clippy_utils::{ - get_expr_use_or_unification_node, get_parent_expr, is_lint_allowed, is_path_diagnostic_item, method_calls, - peel_blocks, SpanlessEq, + SpanlessEq, get_expr_use_or_unification_node, get_parent_expr, is_lint_allowed, is_path_diagnostic_item, + method_calls, peel_blocks, }; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; diff --git a/src/tools/clippy/clippy_lints/src/suspicious_operation_groupings.rs b/src/tools/clippy/clippy_lints/src/suspicious_operation_groupings.rs index 1c1de805db0..be32dc0aab0 100644 --- a/src/tools/clippy/clippy_lints/src/suspicious_operation_groupings.rs +++ b/src/tools/clippy/clippy_lints/src/suspicious_operation_groupings.rs @@ -1,4 +1,4 @@ -use clippy_utils::ast_utils::{eq_id, is_useless_with_eq_exprs, IdentIter}; +use clippy_utils::ast_utils::{IdentIter, eq_id, is_useless_with_eq_exprs}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; use core::ops::{Add, AddAssign}; @@ -7,9 +7,9 @@ use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; +use rustc_span::Span; use rustc_span::source_map::Spanned; use rustc_span::symbol::Ident; -use rustc_span::Span; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs b/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs index 744d6392e06..e9779d437d4 100644 --- a/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs +++ b/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::visitors::for_each_expr_without_closures; -use clippy_utils::{binop_traits, trait_ref_of_method, BINOP_TRAITS, OP_ASSIGN_TRAITS}; +use clippy_utils::{BINOP_TRAITS, OP_ASSIGN_TRAITS, binop_traits, trait_ref_of_method}; use core::ops::ControlFlow; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/swap.rs b/src/tools/clippy/clippy_lints/src/swap.rs index 197011cde3a..a3145c4647c 100644 --- a/src/tools/clippy/clippy_lints/src/swap.rs +++ b/src/tools/clippy/clippy_lints/src/swap.rs @@ -6,7 +6,7 @@ use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::{can_mut_borrow_both, eq_expr_value, is_in_const_context, std_or_core}; use itertools::Itertools; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use crate::FxHashSet; use rustc_errors::Applicability; @@ -17,7 +17,7 @@ use rustc_middle::ty; use rustc_session::declare_lint_pass; use rustc_span::source_map::Spanned; use rustc_span::symbol::Ident; -use rustc_span::{sym, Span, SyntaxContext}; +use rustc_span::{Span, SyntaxContext, sym}; declare_clippy_lint! { /// ### What it does @@ -332,7 +332,7 @@ struct IndexBinding<'a, 'tcx> { applicability: &'a mut Applicability, } -impl<'a, 'tcx> IndexBinding<'a, 'tcx> { +impl<'tcx> IndexBinding<'_, 'tcx> { fn snippet_index_bindings(&mut self, exprs: &[&'tcx Expr<'tcx>]) -> String { let mut bindings = FxHashSet::default(); for expr in exprs { diff --git a/src/tools/clippy/clippy_lints/src/swap_ptr_to_ref.rs b/src/tools/clippy/clippy_lints/src/swap_ptr_to_ref.rs index 20e9608a15d..8c5cf93ab6e 100644 --- a/src/tools/clippy/clippy_lints/src/swap_ptr_to_ref.rs +++ b/src/tools/clippy/clippy_lints/src/swap_ptr_to_ref.rs @@ -5,7 +5,7 @@ use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span, SyntaxContext}; +use rustc_span::{Span, SyntaxContext, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/tests_outside_test_module.rs b/src/tools/clippy/clippy_lints/src/tests_outside_test_module.rs index 25d0a16e2ab..3cd4fefffad 100644 --- a/src/tools/clippy/clippy_lints/src/tests_outside_test_module.rs +++ b/src/tools/clippy/clippy_lints/src/tests_outside_test_module.rs @@ -4,8 +4,8 @@ use rustc_hir::intravisit::FnKind; use rustc_hir::{Body, FnDecl}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/to_digit_is_some.rs b/src/tools/clippy/clippy_lints/src/to_digit_is_some.rs index dafe9e38818..4f96a566b63 100644 --- a/src/tools/clippy/clippy_lints/src/to_digit_is_some.rs +++ b/src/tools/clippy/clippy_lints/src/to_digit_is_some.rs @@ -56,11 +56,13 @@ impl<'tcx> LateLintPass<'tcx> for ToDigitIsSome { && let hir::ExprKind::Path(to_digits_path) = &to_digits_call.kind && let to_digits_call_res = cx.qpath_res(to_digits_path, to_digits_call.hir_id) && let Some(to_digits_def_id) = to_digits_call_res.opt_def_id() - && match_def_path( - cx, - to_digits_def_id, - &["core", "char", "methods", "<impl char>", "to_digit"], - ) + && match_def_path(cx, to_digits_def_id, &[ + "core", + "char", + "methods", + "<impl char>", + "to_digit", + ]) { Some((false, char_arg, radix_arg)) } else { diff --git a/src/tools/clippy/clippy_lints/src/trait_bounds.rs b/src/tools/clippy/clippy_lints/src/trait_bounds.rs index 2e87d36df31..00277593622 100644 --- a/src/tools/clippy/clippy_lints/src/trait_bounds.rs +++ b/src/tools/clippy/clippy_lints/src/trait_bounds.rs @@ -1,8 +1,8 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg}; -use clippy_utils::source::{snippet, snippet_with_applicability, SpanRangeExt}; -use clippy_utils::{is_from_proc_macro, SpanlessEq, SpanlessHash}; +use clippy_utils::source::{SpanRangeExt, snippet, snippet_with_applicability}; +use clippy_utils::{SpanlessEq, SpanlessHash, is_from_proc_macro}; use core::hash::{Hash, Hasher}; use itertools::Itertools; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; diff --git a/src/tools/clippy/clippy_lints/src/transmute/mod.rs b/src/tools/clippy/clippy_lints/src/transmute/mod.rs index da7906b1183..25fec9f688c 100644 --- a/src/tools/clippy/clippy_lints/src/transmute/mod.rs +++ b/src/tools/clippy/clippy_lints/src/transmute/mod.rs @@ -19,8 +19,8 @@ mod useless_transmute; mod utils; mod wrong_transmute; -use clippy_config::msrvs::Msrv; use clippy_config::Conf; +use clippy_config::msrvs::Msrv; use clippy_utils::is_in_const_context; use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; @@ -527,24 +527,44 @@ declare_clippy_lint! { /// Checks if transmute calls have all generics specified. /// /// ### Why is this bad? - /// If not set, some unexpected output type could be retrieved instead of the expected one, - /// potentially leading to invalid code. + /// If not, one or more unexpected types could be used during `transmute()`, potentially leading + /// to Undefined Behavior or other problems. + /// + /// This is particularly dangerous in case a seemingly innocent/unrelated change causes type + /// inference to result in a different type. For example, if `transmute()` is the tail + /// expression of an `if`-branch, and the `else`-branch type changes, the compiler may silently + /// infer a different type to be returned by `transmute()`. That is because the compiler is + /// free to change the inference of a type as long as that inference is technically correct, + /// regardless of the programmer's unknown expectation. /// - /// This is particularly dangerous in case a seemingly innocent/unrelated change can cause type - /// inference to start inferring a different type. E.g. the transmute is the tail expression of - /// an `if` branch, and a different branches type changes, causing the transmute to silently - /// have a different type, instead of a proper error. + /// Both type-parameters, the input- and the output-type, to any `transmute()` should + /// be given explicitly: Setting the input-type explicitly avoids confusion about what the + /// argument's type actually is. Setting the output-type explicitly avoids type-inference + /// to infer a technically correct yet unexpected type. /// /// ### Example /// ```no_run /// # unsafe { + /// // Avoid "naked" calls to `transmute()`! /// let x: i32 = std::mem::transmute([1u16, 2u16]); + /// + /// // `first_answers` is intended to transmute a slice of bool to a slice of u8. + /// // But the programmer forgot to index the first element of the outer slice, + /// // so we are actually transmuting from "pointers to slices" instead of + /// // transmuting from "a slice of bool", causing a nonsensical result. + /// let the_answers: &[&[bool]] = &[&[true, false, true]]; + /// let first_answers: &[u8] = std::mem::transmute(the_answers); /// # } /// ``` /// Use instead: /// ```no_run /// # unsafe { /// let x = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); + /// + /// // The explicit type parameters on `transmute()` makes the intention clear, + /// // and cause a type-error if the actual types don't match our expectation. + /// let the_answers: &[&[bool]] = &[&[true, false, true]]; + /// let first_answers: &[u8] = std::mem::transmute::<&[bool], &[u8]>(the_answers[0]); /// # } /// ``` #[clippy::version = "1.79.0"] diff --git a/src/tools/clippy/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs b/src/tools/clippy/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs index ba8c7d6bfcb..fca332dba40 100644 --- a/src/tools/clippy/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs +++ b/src/tools/clippy/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs @@ -6,8 +6,8 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, Node}; use rustc_hir_typeck::cast::check_cast; use rustc_lint::LateContext; -use rustc_middle::ty::cast::CastKind; use rustc_middle::ty::Ty; +use rustc_middle::ty::cast::CastKind; /// Checks for `transmutes_expressible_as_ptr_casts` lint. /// Returns `true` if it's triggered, otherwise returns `false`. diff --git a/src/tools/clippy/clippy_lints/src/transmute/unsound_collection_transmute.rs b/src/tools/clippy/clippy_lints/src/transmute/unsound_collection_transmute.rs index 35e93830766..f46e95b0b83 100644 --- a/src/tools/clippy/clippy_lints/src/transmute/unsound_collection_transmute.rs +++ b/src/tools/clippy/clippy_lints/src/transmute/unsound_collection_transmute.rs @@ -1,5 +1,5 @@ -use super::utils::is_layout_incompatible; use super::UNSOUND_COLLECTION_TRANSMUTE; +use super::utils::is_layout_incompatible; use clippy_utils::diagnostics::span_lint; use rustc_hir::Expr; use rustc_lint::LateContext; diff --git a/src/tools/clippy/clippy_lints/src/tuple_array_conversions.rs b/src/tools/clippy/clippy_lints/src/tuple_array_conversions.rs index 1d0de932754..3da8a449a7c 100644 --- a/src/tools/clippy/clippy_lints/src/tuple_array_conversions.rs +++ b/src/tools/clippy/clippy_lints/src/tuple_array_conversions.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::visitors::for_each_local_use_after_expr; use clippy_utils::{is_from_proc_macro, path_to_local}; diff --git a/src/tools/clippy/clippy_lints/src/types/box_collection.rs b/src/tools/clippy/clippy_lints/src/types/box_collection.rs index 9ac73394548..24fe4e08a5b 100644 --- a/src/tools/clippy/clippy_lints/src/types/box_collection.rs +++ b/src/tools/clippy/clippy_lints/src/types/box_collection.rs @@ -3,7 +3,7 @@ use clippy_utils::{path_def_id, qpath_generic_tys}; use rustc_hir::def_id::DefId; use rustc_hir::{self as hir, QPath}; use rustc_lint::LateContext; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; use super::BOX_COLLECTION; diff --git a/src/tools/clippy/clippy_lints/src/types/mod.rs b/src/tools/clippy/clippy_lints/src/types/mod.rs index 3a14927802b..363aea8be72 100644 --- a/src/tools/clippy/clippy_lints/src/types/mod.rs +++ b/src/tools/clippy/clippy_lints/src/types/mod.rs @@ -18,8 +18,8 @@ use rustc_hir::{ }; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; declare_clippy_lint! { /// ### What it does @@ -261,8 +261,59 @@ declare_clippy_lint! { /// ### Example /// ```no_run /// # use std::rc::Rc; - /// struct Foo { - /// inner: Rc<Vec<Vec<Box<(u32, u32, u32, u32)>>>>, + /// struct PointMatrixContainer { + /// matrix: Rc<Vec<Vec<Box<(u32, u32, u32, u32)>>>>, + /// } + /// + /// fn main() { + /// let point_matrix: Vec<Vec<Box<(u32, u32, u32, u32)>>> = vec![ + /// vec![ + /// Box::new((1, 2, 3, 4)), + /// Box::new((5, 6, 7, 8)), + /// ], + /// vec![ + /// Box::new((9, 10, 11, 12)), + /// ], + /// ]; + /// + /// let shared_point_matrix: Rc<Vec<Vec<Box<(u32, u32, u32, u32)>>>> = Rc::new(point_matrix); + /// + /// let container = PointMatrixContainer { + /// matrix: shared_point_matrix, + /// }; + /// + /// // ... + /// } + /// ``` + /// Use instead: + /// ### Example + /// ```no_run + /// # use std::rc::Rc; + /// type PointMatrix = Vec<Vec<Box<(u32, u32, u32, u32)>>>; + /// type SharedPointMatrix = Rc<PointMatrix>; + /// + /// struct PointMatrixContainer { + /// matrix: SharedPointMatrix, + /// } + /// + /// fn main() { + /// let point_matrix: PointMatrix = vec![ + /// vec![ + /// Box::new((1, 2, 3, 4)), + /// Box::new((5, 6, 7, 8)), + /// ], + /// vec![ + /// Box::new((9, 10, 11, 12)), + /// ], + /// ]; + /// + /// let shared_point_matrix: SharedPointMatrix = Rc::new(point_matrix); + /// + /// let container = PointMatrixContainer { + /// matrix: shared_point_matrix, + /// }; + /// + /// // ... /// } /// ``` #[clippy::version = "pre 1.29.0"] @@ -335,30 +386,22 @@ impl<'tcx> LateLintPass<'tcx> for Types { let is_exported = cx.effective_visibilities.is_exported(def_id); - self.check_fn_decl( - cx, - decl, - CheckTyContext { - is_in_trait_impl, - is_exported, - in_body: matches!(fn_kind, FnKind::Closure), - ..CheckTyContext::default() - }, - ); + self.check_fn_decl(cx, decl, CheckTyContext { + is_in_trait_impl, + is_exported, + in_body: matches!(fn_kind, FnKind::Closure), + ..CheckTyContext::default() + }); } fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { let is_exported = cx.effective_visibilities.is_exported(item.owner_id.def_id); match item.kind { - ItemKind::Static(ty, _, _) | ItemKind::Const(ty, _, _) => self.check_ty( - cx, - ty, - CheckTyContext { - is_exported, - ..CheckTyContext::default() - }, - ), + ItemKind::Static(ty, _, _) | ItemKind::Const(ty, _, _) => self.check_ty(cx, ty, CheckTyContext { + is_exported, + ..CheckTyContext::default() + }), // functions, enums, structs, impls and traits are covered _ => (), } @@ -376,14 +419,10 @@ impl<'tcx> LateLintPass<'tcx> for Types { false }; - self.check_ty( - cx, - ty, - CheckTyContext { - is_in_trait_impl, - ..CheckTyContext::default() - }, - ); + self.check_ty(cx, ty, CheckTyContext { + is_in_trait_impl, + ..CheckTyContext::default() + }); }, // Methods are covered by check_fn. // Type aliases are ignored because oftentimes it's impossible to @@ -399,14 +438,10 @@ impl<'tcx> LateLintPass<'tcx> for Types { let is_exported = cx.effective_visibilities.is_exported(field.def_id); - self.check_ty( - cx, - field.ty, - CheckTyContext { - is_exported, - ..CheckTyContext::default() - }, - ); + self.check_ty(cx, field.ty, CheckTyContext { + is_exported, + ..CheckTyContext::default() + }); } fn check_trait_item(&mut self, cx: &LateContext<'tcx>, item: &TraitItem<'tcx>) { @@ -434,14 +469,10 @@ impl<'tcx> LateLintPass<'tcx> for Types { fn check_local(&mut self, cx: &LateContext<'tcx>, local: &LetStmt<'tcx>) { if let Some(ty) = local.ty { - self.check_ty( - cx, - ty, - CheckTyContext { - in_body: true, - ..CheckTyContext::default() - }, - ); + self.check_ty(cx, ty, CheckTyContext { + in_body: true, + ..CheckTyContext::default() + }); } } } diff --git a/src/tools/clippy/clippy_lints/src/types/redundant_allocation.rs b/src/tools/clippy/clippy_lints/src/types/redundant_allocation.rs index 0801eace4fc..1a656088b17 100644 --- a/src/tools/clippy/clippy_lints/src/types/redundant_allocation.rs +++ b/src/tools/clippy/clippy_lints/src/types/redundant_allocation.rs @@ -9,7 +9,7 @@ use rustc_lint::LateContext; use rustc_middle::ty::TypeVisitableExt; use rustc_span::symbol::sym; -use super::{utils, REDUNDANT_ALLOCATION}; +use super::{REDUNDANT_ALLOCATION, utils}; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, hir_ty: &hir::Ty<'tcx>, qpath: &QPath<'tcx>, def_id: DefId) -> bool { let mut applicability = Applicability::MaybeIncorrect; diff --git a/src/tools/clippy/clippy_lints/src/types/type_complexity.rs b/src/tools/clippy/clippy_lints/src/types/type_complexity.rs index 7fcfd5c8f35..0b64fddb447 100644 --- a/src/tools/clippy/clippy_lints/src/types/type_complexity.rs +++ b/src/tools/clippy/clippy_lints/src/types/type_complexity.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint; use rustc_hir as hir; -use rustc_hir::intravisit::{walk_inf, walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_inf, walk_ty}; use rustc_hir::{GenericParamKind, TyKind}; use rustc_lint::LateContext; use rustc_target::spec::abi::Abi; diff --git a/src/tools/clippy/clippy_lints/src/types/vec_box.rs b/src/tools/clippy/clippy_lints/src/types/vec_box.rs index 29996a6f783..230239335c6 100644 --- a/src/tools/clippy/clippy_lints/src/types/vec_box.rs +++ b/src/tools/clippy/clippy_lints/src/types/vec_box.rs @@ -6,8 +6,8 @@ use rustc_hir::def_id::DefId; use rustc_hir::{self as hir, GenericArg, LangItem, QPath, TyKind}; use rustc_hir_analysis::lower_ty; use rustc_lint::LateContext; -use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::TypeVisitableExt; +use rustc_middle::ty::layout::LayoutOf; use rustc_span::symbol::sym; use super::VEC_BOX; diff --git a/src/tools/clippy/clippy_lints/src/unconditional_recursion.rs b/src/tools/clippy/clippy_lints/src/unconditional_recursion.rs index 42100e1d755..3fc08e8192d 100644 --- a/src/tools/clippy/clippy_lints/src/unconditional_recursion.rs +++ b/src/tools/clippy/clippy_lints/src/unconditional_recursion.rs @@ -5,7 +5,7 @@ use rustc_data_structures::fx::FxHashMap; use rustc_hir as hir; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::{DefId, LocalDefId}; -use rustc_hir::intravisit::{walk_body, walk_expr, FnKind, Visitor}; +use rustc_hir::intravisit::{FnKind, Visitor, walk_body, walk_expr}; use rustc_hir::{Body, Expr, ExprKind, FnDecl, HirId, Item, ItemKind, Node, QPath, TyKind}; use rustc_hir_analysis::lower_ty; use rustc_lint::{LateContext, LateLintPass}; @@ -13,8 +13,8 @@ use rustc_middle::hir::map::Map; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, AssocKind, Ty, TyCtxt}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::{kw, Ident}; -use rustc_span::{sym, Span}; +use rustc_span::symbol::{Ident, kw}; +use rustc_span::{Span, sym}; use rustc_trait_selection::error_reporting::traits::suggestions::ReturnsVisitor; use std::ops::ControlFlow; @@ -257,13 +257,10 @@ fn is_default_method_on_current_ty<'tcx>(tcx: TyCtxt<'tcx>, qpath: QPath<'tcx>, } if matches!( ty.kind, - TyKind::Path(QPath::Resolved( - _, - hir::Path { - res: Res::SelfTyAlias { .. }, - .. - }, - )) + TyKind::Path(QPath::Resolved(_, hir::Path { + res: Res::SelfTyAlias { .. }, + .. + },)) ) { return true; } diff --git a/src/tools/clippy/clippy_lints/src/undocumented_unsafe_blocks.rs b/src/tools/clippy/clippy_lints/src/undocumented_unsafe_blocks.rs index f51c5f74d99..44eb0a6c593 100644 --- a/src/tools/clippy/clippy_lints/src/undocumented_unsafe_blocks.rs +++ b/src/tools/clippy/clippy_lints/src/undocumented_unsafe_blocks.rs @@ -4,12 +4,12 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_lint_allowed; use clippy_utils::source::walk_span_to_context; -use clippy_utils::visitors::{for_each_expr, Descend}; +use clippy_utils::visitors::{Descend, for_each_expr}; use hir::HirId; use rustc_data_structures::sync::Lrc; use rustc_hir as hir; use rustc_hir::{Block, BlockCheckMode, ItemKind, Node, UnsafeSource}; -use rustc_lexer::{tokenize, TokenKind}; +use rustc_lexer::{TokenKind, tokenize}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/uninhabited_references.rs b/src/tools/clippy/clippy_lints/src/uninhabited_references.rs index 88039372ebd..cfa565cf803 100644 --- a/src/tools/clippy/clippy_lints/src/uninhabited_references.rs +++ b/src/tools/clippy/clippy_lints/src/uninhabited_references.rs @@ -5,8 +5,8 @@ use rustc_hir_analysis::lower_ty; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; -use rustc_span::def_id::LocalDefId; use rustc_span::Span; +use rustc_span::def_id::LocalDefId; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/uninit_vec.rs b/src/tools/clippy/clippy_lints/src/uninit_vec.rs index 9ffcfcc0f50..93ed15777e0 100644 --- a/src/tools/clippy/clippy_lints/src/uninit_vec.rs +++ b/src/tools/clippy/clippy_lints/src/uninit_vec.rs @@ -1,13 +1,13 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; -use clippy_utils::higher::{get_vec_init_kind, VecInitKind}; +use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::ty::{is_type_diagnostic_item, is_uninit_value_valid_for_ty}; -use clippy_utils::{is_integer_literal, is_lint_allowed, path_to_local_id, peel_hir_expr_while, SpanlessEq}; +use clippy_utils::{SpanlessEq, is_integer_literal, is_lint_allowed, path_to_local_id, peel_hir_expr_while}; use rustc_hir::{Block, Expr, ExprKind, HirId, PatKind, PathSegment, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; // TODO: add `ReadBuf` (RFC 2930) in "How to fix" once it is available in std declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/unit_return_expecting_ord.rs b/src/tools/clippy/clippy_lints/src/unit_return_expecting_ord.rs index a8cc2f97963..87478a120dd 100644 --- a/src/tools/clippy/clippy_lints/src/unit_return_expecting_ord.rs +++ b/src/tools/clippy/clippy_lints/src/unit_return_expecting_ord.rs @@ -5,7 +5,7 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_middle::ty::{ClauseKind, GenericPredicates, ProjectionPredicate, TraitPredicate}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, BytePos, Span}; +use rustc_span::{BytePos, Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/unit_types/let_unit_value.rs b/src/tools/clippy/clippy_lints/src/unit_types/let_unit_value.rs index 80b661a757c..bf2d75ea1a9 100644 --- a/src/tools/clippy/clippy_lints/src/unit_types/let_unit_value.rs +++ b/src/tools/clippy/clippy_lints/src/unit_types/let_unit_value.rs @@ -4,7 +4,7 @@ use clippy_utils::visitors::{for_each_local_assignment, for_each_value_source, i use core::ops::ControlFlow; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::intravisit::{walk_body, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_body}; use rustc_hir::{Expr, ExprKind, HirId, HirIdSet, LetStmt, MatchSource, Node, PatKind, QPath, TyKind}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::{in_external_macro, is_from_async_await}; diff --git a/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs b/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs index 978d49f09c3..41b2ca5d268 100644 --- a/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs +++ b/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs @@ -1,11 +1,11 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_from_proc_macro; -use clippy_utils::source::{indent_of, reindent_multiline, SourceText, SpanRangeExt}; +use clippy_utils::source::{SourceText, SpanRangeExt, indent_of, reindent_multiline}; use rustc_errors::Applicability; use rustc_hir::{Block, Expr, ExprKind, MatchSource, Node, StmtKind}; use rustc_lint::LateContext; -use super::{utils, UNIT_ARG}; +use super::{UNIT_ARG, utils}; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { if expr.span.from_expansion() { diff --git a/src/tools/clippy/clippy_lints/src/unnecessary_wraps.rs b/src/tools/clippy/clippy_lints/src/unnecessary_wraps.rs index 080efe983c2..937e35dea96 100644 --- a/src/tools/clippy/clippy_lints/src/unnecessary_wraps.rs +++ b/src/tools/clippy/clippy_lints/src/unnecessary_wraps.rs @@ -4,15 +4,15 @@ use clippy_utils::source::snippet; use clippy_utils::visitors::find_all_ret_expressions; use clippy_utils::{contains_return, is_res_lang_ctor, path_res, return_ty}; use rustc_errors::Applicability; -use rustc_hir::intravisit::FnKind; use rustc_hir::LangItem::{OptionSome, ResultOk}; +use rustc_hir::intravisit::FnKind; use rustc_hir::{Body, ExprKind, FnDecl, Impl, ItemKind, Node}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; +use rustc_span::Span; use rustc_span::def_id::LocalDefId; use rustc_span::symbol::sym; -use rustc_span::Span; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs b/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs index 98f0be3135d..c7c837de505 100644 --- a/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs +++ b/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs @@ -1,14 +1,14 @@ #![allow(clippy::wildcard_imports, clippy::enum_glob_use)] -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::ast_utils::{eq_field_pat, eq_id, eq_maybe_qself, eq_pat, eq_path}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::over; +use rustc_ast::PatKind::*; use rustc_ast::mut_visit::*; use rustc_ast::ptr::P; -use rustc_ast::PatKind::*; -use rustc_ast::{self as ast, Mutability, Pat, PatKind, DUMMY_NODE_ID}; +use rustc_ast::{self as ast, DUMMY_NODE_ID, Mutability, Pat, PatKind}; use rustc_ast_pretty::pprust; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; @@ -16,7 +16,7 @@ use rustc_session::impl_lint_pass; use rustc_span::DUMMY_SP; use std::cell::Cell; use std::mem; -use thin_vec::{thin_vec, ThinVec}; +use thin_vec::{ThinVec, thin_vec}; declare_clippy_lint! { /// ### What it does @@ -275,12 +275,15 @@ fn transform_with_focus_on_idx(alternatives: &mut ThinVec<P<Pat>>, focus_idx: us |k, ps1, idx| matches!( k, TupleStruct(qself2, path2, ps2) - if eq_maybe_qself(qself1, qself2) && eq_path(path1, path2) && eq_pre_post(ps1, ps2, idx) + if eq_maybe_qself(qself1.as_ref(), qself2.as_ref()) + && eq_path(path1, path2) && eq_pre_post(ps1, ps2, idx) ), |k| always_pat!(k, TupleStruct(_, _, ps) => ps), ), // Transform a record pattern `S { fp_0, ..., fp_n }`. - Struct(qself1, path1, fps1, rest1) => extend_with_struct_pat(qself1, path1, fps1, *rest1, start, alternatives), + Struct(qself1, path1, fps1, rest1) => { + extend_with_struct_pat(qself1.as_ref(), path1, fps1, *rest1, start, alternatives) + }, }; alternatives[focus_idx].kind = focus_kind; @@ -292,7 +295,7 @@ fn transform_with_focus_on_idx(alternatives: &mut ThinVec<P<Pat>>, focus_idx: us /// So when we fixate on some `ident_k: pat_k`, we try to find `ident_k` in the other pattern /// and check that all `fp_i` where `i ∈ ((0...n) \ k)` between two patterns are equal. fn extend_with_struct_pat( - qself1: &Option<P<ast::QSelf>>, + qself1: Option<&P<ast::QSelf>>, path1: &ast::Path, fps1: &mut [ast::PatField], rest1: ast::PatFieldsRest, @@ -307,7 +310,7 @@ fn extend_with_struct_pat( |k| { matches!(k, Struct(qself2, path2, fps2, rest2) if rest1 == *rest2 // If one struct pattern has `..` so must the other. - && eq_maybe_qself(qself1, qself2) + && eq_maybe_qself(qself1, qself2.as_ref()) && eq_path(path1, path2) && fps1.len() == fps2.len() && fps1.iter().enumerate().all(|(idx_1, fp1)| { diff --git a/src/tools/clippy/clippy_lints/src/unsafe_removed_from_name.rs b/src/tools/clippy/clippy_lints/src/unsafe_removed_from_name.rs index 309eaedac8d..e70d2a2dafe 100644 --- a/src/tools/clippy/clippy_lints/src/unsafe_removed_from_name.rs +++ b/src/tools/clippy/clippy_lints/src/unsafe_removed_from_name.rs @@ -2,8 +2,8 @@ use clippy_utils::diagnostics::span_lint; use rustc_ast::ast::{Item, ItemKind, UseTree, UseTreeKind}; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::Ident; use rustc_span::Span; +use rustc_span::symbol::Ident; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/unused_async.rs b/src/tools/clippy/clippy_lints/src/unused_async.rs index 738fba54fa8..c899b1868a6 100644 --- a/src/tools/clippy/clippy_lints/src/unused_async.rs +++ b/src/tools/clippy/clippy_lints/src/unused_async.rs @@ -1,13 +1,13 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::is_def_id_trait_method; use rustc_hir::def::DefKind; -use rustc_hir::intravisit::{walk_expr, walk_fn, FnKind, Visitor}; -use rustc_hir::{Body, Expr, ExprKind, FnDecl, Node, YieldSource}; +use rustc_hir::intravisit::{FnKind, Visitor, walk_expr, walk_fn}; +use rustc_hir::{Body, Expr, ExprKind, FnDecl, HirId, Node, YieldSource}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_session::impl_lint_pass; -use rustc_span::def_id::{LocalDefId, LocalDefIdSet}; use rustc_span::Span; +use rustc_span::def_id::{LocalDefId, LocalDefIdSet}; declare_clippy_lint! { /// ### What it does @@ -67,7 +67,7 @@ struct AsyncFnVisitor<'a, 'tcx> { async_depth: usize, } -impl<'a, 'tcx> Visitor<'tcx> for AsyncFnVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for AsyncFnVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) { @@ -137,17 +137,7 @@ impl<'tcx> LateLintPass<'tcx> for UnusedAsync { } } - fn check_path(&mut self, cx: &LateContext<'tcx>, path: &rustc_hir::Path<'tcx>, hir_id: rustc_hir::HirId) { - fn is_node_func_call(node: Node<'_>, expected_receiver: Span) -> bool { - matches!( - node, - Node::Expr(Expr { - kind: ExprKind::Call(Expr { span, .. }, _) | ExprKind::MethodCall(_, Expr { span, .. }, ..), - .. - }) if *span == expected_receiver - ) - } - + fn check_path(&mut self, cx: &LateContext<'tcx>, path: &rustc_hir::Path<'tcx>, hir_id: HirId) { // Find paths to local async functions that aren't immediately called. // E.g. `async fn f() {}; let x = f;` // Depending on how `x` is used, f's asyncness might be required despite not having any `await` @@ -156,7 +146,14 @@ impl<'tcx> LateLintPass<'tcx> for UnusedAsync { && let Some(local_def_id) = def_id.as_local() && cx.tcx.def_kind(def_id) == DefKind::Fn && cx.tcx.asyncness(def_id).is_async() - && !is_node_func_call(cx.tcx.parent_hir_node(hir_id), path.span) + && let parent = cx.tcx.parent_hir_node(hir_id) + && !matches!( + parent, + Node::Expr(Expr { + kind: ExprKind::Call(Expr { span, .. }, _), + .. + }) if *span == path.span + ) { self.async_fns_as_value.insert(local_def_id); } diff --git a/src/tools/clippy/clippy_lints/src/unused_io_amount.rs b/src/tools/clippy/clippy_lints/src/unused_io_amount.rs index af7abd009d2..d2a21b11ef4 100644 --- a/src/tools/clippy/clippy_lints/src/unused_io_amount.rs +++ b/src/tools/clippy/clippy_lints/src/unused_io_amount.rs @@ -5,7 +5,7 @@ use hir::{ExprKind, HirId, PatKind}; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/unused_peekable.rs b/src/tools/clippy/clippy_lints/src/unused_peekable.rs index 86a811e17ca..71aa57e0a14 100644 --- a/src/tools/clippy/clippy_lints/src/unused_peekable.rs +++ b/src/tools/clippy/clippy_lints/src/unused_peekable.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::ty::{is_type_diagnostic_item, peel_mid_ty_refs_is_mutable}; use clippy_utils::{fn_def_id, is_trait_method, path_to_local_id, peel_ref_operators}; use rustc_ast::Mutability; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Block, Expr, ExprKind, HirId, LetStmt, Node, PatKind, PathSegment, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter::OnlyBodies; diff --git a/src/tools/clippy/clippy_lints/src/unused_trait_names.rs b/src/tools/clippy/clippy_lints/src/unused_trait_names.rs new file mode 100644 index 00000000000..9fd6ebccd02 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/unused_trait_names.rs @@ -0,0 +1,94 @@ +use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::is_from_proc_macro; +use clippy_utils::source::snippet_opt; +use rustc_errors::Applicability; +use rustc_hir::def::{DefKind, Res}; +use rustc_hir::{Item, ItemKind, UseKind}; +use rustc_lint::{LateContext, LateLintPass, LintContext as _}; +use rustc_middle::lint::in_external_macro; +use rustc_middle::ty::Visibility; +use rustc_session::impl_lint_pass; +use rustc_span::symbol::kw; + +declare_clippy_lint! { + /// ### What it does + /// Checks for `use Trait` where the Trait is only used for its methods and not referenced by a path directly. + /// + /// ### Why is this bad? + /// Traits imported that aren't used directly can be imported anonymously with `use Trait as _`. + /// It is more explicit, avoids polluting the current scope with unused names and can be useful to show which imports are required for traits. + /// + /// ### Example + /// ```no_run + /// use std::fmt::Write; + /// + /// fn main() { + /// let mut s = String::new(); + /// let _ = write!(s, "hello, world!"); + /// println!("{s}"); + /// } + /// ``` + /// Use instead: + /// ```no_run + /// use std::fmt::Write as _; + /// + /// fn main() { + /// let mut s = String::new(); + /// let _ = write!(s, "hello, world!"); + /// println!("{s}"); + /// } + /// ``` + #[clippy::version = "1.83.0"] + pub UNUSED_TRAIT_NAMES, + restriction, + "use items that import a trait but only use it anonymously" +} + +pub struct UnusedTraitNames { + msrv: Msrv, +} + +impl UnusedTraitNames { + pub fn new(conf: &'static Conf) -> Self { + Self { + msrv: conf.msrv.clone(), + } + } +} + +impl_lint_pass!(UnusedTraitNames => [UNUSED_TRAIT_NAMES]); + +impl<'tcx> LateLintPass<'tcx> for UnusedTraitNames { + fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { + if self.msrv.meets(msrvs::UNDERSCORE_IMPORTS) + && !in_external_macro(cx.sess(), item.span) + && let ItemKind::Use(path, UseKind::Single) = item.kind + // Ignore imports that already use Underscore + && item.ident.name != kw::Underscore + // Only check traits + && let Some(Res::Def(DefKind::Trait, _)) = path.res.first() + && cx.tcx.maybe_unused_trait_imports(()).contains(&item.owner_id.def_id) + // Only check this import if it is visible to its module only (no pub, pub(crate), ...) + && let module = cx.tcx.parent_module_from_def_id(item.owner_id.def_id) + && cx.tcx.visibility(item.owner_id.def_id) == Visibility::Restricted(module.to_def_id()) + && let Some(last_segment) = path.segments.last() + && let Some(snip) = snippet_opt(cx, last_segment.ident.span) + && !is_from_proc_macro(cx, &last_segment.ident) + { + let complete_span = last_segment.ident.span.to(item.ident.span); + span_lint_and_sugg( + cx, + UNUSED_TRAIT_NAMES, + complete_span, + "importing trait that is only used anonymously", + "use", + format!("{snip} as _"), + Applicability::MachineApplicable, + ); + } + } + + extract_msrv_attr!(LateContext); +} diff --git a/src/tools/clippy/clippy_lints/src/unused_unit.rs b/src/tools/clippy/clippy_lints/src/unused_unit.rs index 65f431d338b..d5309aade7a 100644 --- a/src/tools/clippy/clippy_lints/src/unused_unit.rs +++ b/src/tools/clippy/clippy_lints/src/unused_unit.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{position_before_rarrow, SpanRangeExt}; +use clippy_utils::source::{SpanRangeExt, position_before_rarrow}; use rustc_ast::visit::FnKind; -use rustc_ast::{ast, ClosureBinder}; +use rustc_ast::{ClosureBinder, ast}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/unwrap.rs b/src/tools/clippy/clippy_lints/src/unwrap.rs index 0b4ea0752b6..6fe660b6a47 100644 --- a/src/tools/clippy/clippy_lints/src/unwrap.rs +++ b/src/tools/clippy/clippy_lints/src/unwrap.rs @@ -3,7 +3,7 @@ use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::usage::is_potentially_local_place; use clippy_utils::{higher, path_to_local}; use rustc_errors::Applicability; -use rustc_hir::intravisit::{walk_expr, walk_fn, FnKind, Visitor}; +use rustc_hir::intravisit::{FnKind, Visitor, walk_expr, walk_fn}; use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, HirId, Node, PathSegment, UnOp}; use rustc_hir_typeck::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceWithHirId}; use rustc_lint::{LateContext, LateLintPass}; @@ -13,7 +13,7 @@ use rustc_middle::mir::FakeReadCause; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -235,7 +235,7 @@ impl<'tcx> Delegate<'tcx> for MutationVisitor<'tcx> { fn fake_read(&mut self, _: &PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId) {} } -impl<'a, 'tcx> UnwrappableVariablesVisitor<'a, 'tcx> { +impl<'tcx> UnwrappableVariablesVisitor<'_, 'tcx> { fn visit_branch( &mut self, if_expr: &'tcx Expr<'_>, @@ -288,7 +288,7 @@ fn consume_option_as_ref<'tcx>(expr: &'tcx Expr<'tcx>) -> (&'tcx Expr<'tcx>, Opt } } -impl<'a, 'tcx> Visitor<'tcx> for UnwrappableVariablesVisitor<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for UnwrappableVariablesVisitor<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { diff --git a/src/tools/clippy/clippy_lints/src/unwrap_in_result.rs b/src/tools/clippy/clippy_lints/src/unwrap_in_result.rs index f77badd97b7..9b9a2ffbbc8 100644 --- a/src/tools/clippy/clippy_lints/src/unwrap_in_result.rs +++ b/src/tools/clippy/clippy_lints/src/unwrap_in_result.rs @@ -7,7 +7,7 @@ use rustc_hir as hir; use rustc_hir::ImplItemKind; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/use_self.rs b/src/tools/clippy/clippy_lints/src/use_self.rs index 5da48f4f7fb..f5cf4a586fd 100644 --- a/src/tools/clippy/clippy_lints/src/use_self.rs +++ b/src/tools/clippy/clippy_lints/src/use_self.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::is_from_proc_macro; use clippy_utils::ty::same_type_and_consts; @@ -7,7 +7,7 @@ use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::{CtorOf, DefKind, Res}; use rustc_hir::def_id::LocalDefId; -use rustc_hir::intravisit::{walk_inf, walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_inf, walk_ty}; use rustc_hir::{ self as hir, Expr, ExprKind, FnRetTy, FnSig, GenericArgsParentheses, GenericParam, GenericParamKind, HirId, Impl, ImplItemKind, Item, ItemKind, Pat, PatKind, Path, QPath, Ty, TyKind, @@ -85,10 +85,6 @@ const SEGMENTS_MSG: &str = "segments should be composed of at least 1 element"; impl<'tcx> LateLintPass<'tcx> for UseSelf { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &Item<'tcx>) { - if matches!(item.kind, ItemKind::OpaqueTy(_)) { - // skip over `ItemKind::OpaqueTy` in order to lint `foo() -> impl <..>` - return; - } // We push the self types of `impl`s on a stack here. Only the top type on the stack is // relevant for linting, since this is the self type of the `impl` we're currently in. To // avoid linting on nested items, we push `StackItem::NoCheck` on the stack to signal, that @@ -130,10 +126,8 @@ impl<'tcx> LateLintPass<'tcx> for UseSelf { self.stack.push(stack_item); } - fn check_item_post(&mut self, _: &LateContext<'_>, item: &Item<'_>) { - if !matches!(item.kind, ItemKind::OpaqueTy(_)) { - self.stack.pop(); - } + fn check_item_post(&mut self, _: &LateContext<'_>, _: &Item<'_>) { + self.stack.pop(); } fn check_impl_item(&mut self, cx: &LateContext<'_>, impl_item: &hir::ImplItem<'_>) { @@ -280,7 +274,7 @@ struct SkipTyCollector { types_to_skip: Vec<HirId>, } -impl<'tcx> Visitor<'tcx> for SkipTyCollector { +impl Visitor<'_> for SkipTyCollector { fn visit_infer(&mut self, inf: &hir::InferArg) { self.types_to_skip.push(inf.hir_id); diff --git a/src/tools/clippy/clippy_lints/src/useless_conversion.rs b/src/tools/clippy/clippy_lints/src/useless_conversion.rs index 2f7d54e73ed..29a7949b343 100644 --- a/src/tools/clippy/clippy_lints/src/useless_conversion.rs +++ b/src/tools/clippy/clippy_lints/src/useless_conversion.rs @@ -12,7 +12,7 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::traits::ObligationCause; use rustc_middle::ty::{self, EarlyBinder, GenericArg, GenericArgsRef, Ty, TypeVisitableExt}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt; declare_clippy_lint! { @@ -217,12 +217,12 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion { }, ExprKind::MethodCall(.., args, _) => { cx.typeck_results().type_dependent_def_id(parent.hir_id).map(|did| { - return ( + ( did, args, cx.typeck_results().node_args(parent.hir_id), MethodOrFunction::Method, - ); + ) }) }, _ => None, diff --git a/src/tools/clippy/clippy_lints/src/utils/author.rs b/src/tools/clippy/clippy_lints/src/utils/author.rs index 0cce45290cf..31f9d84f5e4 100644 --- a/src/tools/clippy/clippy_lints/src/utils/author.rs +++ b/src/tools/clippy/clippy_lints/src/utils/author.rs @@ -1,6 +1,6 @@ use clippy_utils::{get_attr, higher}; -use rustc_ast::ast::{LitFloatType, LitKind}; use rustc_ast::LitIntType; +use rustc_ast::ast::{LitFloatType, LitKind}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::{ self as hir, ArrayLen, BindingMode, CaptureBy, Closure, ClosureKind, ConstArg, ConstArgKind, CoroutineKind, diff --git a/src/tools/clippy/clippy_lints/src/utils/format_args_collector.rs b/src/tools/clippy/clippy_lints/src/utils/format_args_collector.rs index f50ce6c99de..8f314ce7a60 100644 --- a/src/tools/clippy/clippy_lints/src/utils/format_args_collector.rs +++ b/src/tools/clippy/clippy_lints/src/utils/format_args_collector.rs @@ -3,10 +3,10 @@ use clippy_utils::source::SpanRangeExt; use itertools::Itertools; use rustc_ast::{Crate, Expr, ExprKind, FormatArgs}; use rustc_data_structures::fx::FxHashMap; -use rustc_lexer::{tokenize, TokenKind}; +use rustc_lexer::{TokenKind, tokenize}; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::{hygiene, Span}; +use rustc_span::{Span, hygiene}; use std::iter::once; use std::mem; diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints/collapsible_calls.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints/collapsible_calls.rs index f7529682675..d8f101a8614 100644 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints/collapsible_calls.rs +++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints/collapsible_calls.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet; -use clippy_utils::{is_expr_path_def_path, is_lint_allowed, peel_blocks_with_stmt, SpanlessEq}; +use clippy_utils::{SpanlessEq, is_expr_path_def_path, is_lint_allowed, peel_blocks_with_stmt}; use rustc_errors::Applicability; use rustc_hir::{Closure, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs index 7c2e23995c1..9e400d2391f 100644 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs +++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs @@ -80,7 +80,7 @@ impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol { && let ty = cx.tcx.type_of(item_def_id).instantiate_identity() && match_type(cx, ty, &paths::SYMBOL) && let Ok(ConstValue::Scalar(value)) = cx.tcx.const_eval_poly(item_def_id) - && let Ok(value) = value.to_u32() + && let Some(value) = value.to_u32().discard_err() { self.symbol_map.insert(value, item_def_id); } diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints/invalid_paths.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints/invalid_paths.rs index 0ffcb433481..96397375d5e 100644 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints/invalid_paths.rs +++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints/invalid_paths.rs @@ -2,11 +2,11 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::def_path_res; use clippy_utils::diagnostics::span_lint; use rustc_hir as hir; -use rustc_hir::def::DefKind; use rustc_hir::Item; +use rustc_hir::def::DefKind; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::fast_reject::SimplifiedType; use rustc_middle::ty::FloatTy; +use rustc_middle::ty::fast_reject::SimplifiedType; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; @@ -72,8 +72,7 @@ pub fn check_path(cx: &LateContext<'_>, path: &[&str]) -> bool { SimplifiedType::Bool, ] .iter() - .flat_map(|&ty| cx.tcx.incoherent_impls(ty).into_iter()) - .flatten() + .flat_map(|&ty| cx.tcx.incoherent_impls(ty).iter()) .copied(); for item_def_id in lang_items.iter().map(|(_, def_id)| def_id).chain(incoherent_impls) { let lang_item_path = cx.get_def_path(item_def_id); diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs index 20526113d69..dd456022212 100644 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs +++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs @@ -12,7 +12,7 @@ use rustc_middle::hir::nested_filter; use rustc_session::impl_lint_pass; use rustc_span::source_map::Spanned; use rustc_span::symbol::Symbol; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use {rustc_ast as ast, rustc_hir as hir}; declare_clippy_lint! { @@ -270,7 +270,7 @@ struct LintCollector<'a, 'tcx> { cx: &'a LateContext<'tcx>, } -impl<'a, 'tcx> Visitor<'tcx> for LintCollector<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for LintCollector<'_, 'tcx> { type NestedFilter = nested_filter::All; fn visit_path(&mut self, path: &Path<'_>, _: HirId) { diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs index 41183700f09..76b0a52621b 100644 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs +++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs @@ -8,12 +8,12 @@ use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; use rustc_hir::{Expr, ExprKind, LetStmt, Mutability, Node}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::mir::interpret::{Allocation, GlobalAlloc}; use rustc_middle::mir::ConstValue; +use rustc_middle::mir::interpret::{Allocation, GlobalAlloc}; use rustc_middle::ty::{self, Ty}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::Symbol; use rustc_span::Span; +use rustc_span::symbol::Symbol; use std::str; diff --git a/src/tools/clippy/clippy_lints/src/vec.rs b/src/tools/clippy/clippy_lints/src/vec.rs index d3e49bff422..ce4f41e854d 100644 --- a/src/tools/clippy/clippy_lints/src/vec.rs +++ b/src/tools/clippy/clippy_lints/src/vec.rs @@ -1,8 +1,8 @@ use std::collections::BTreeMap; use std::ops::ControlFlow; -use clippy_config::msrvs::{self, Msrv}; use clippy_config::Conf; +use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::source::SpanRangeExt; @@ -15,7 +15,7 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_middle::ty::layout::LayoutOf; use rustc_session::impl_lint_pass; -use rustc_span::{sym, DesugaringKind, Span}; +use rustc_span::{DesugaringKind, Span, sym}; #[expect(clippy::module_name_repetitions)] pub struct UselessVec { diff --git a/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs b/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs index a599415a2dd..91dff5a9523 100644 --- a/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs +++ b/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::higher::{get_vec_init_kind, VecInitKind}; +use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::source::snippet; use clippy_utils::visitors::for_each_local_use_after_expr; use clippy_utils::{get_parent_expr, path_to_local_id}; diff --git a/src/tools/clippy/clippy_lints/src/visibility.rs b/src/tools/clippy/clippy_lints/src/visibility.rs index 7a85196ceca..2e5fc5834e2 100644 --- a/src/tools/clippy/clippy_lints/src/visibility.rs +++ b/src/tools/clippy/clippy_lints/src/visibility.rs @@ -5,8 +5,8 @@ use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::declare_lint_pass; -use rustc_span::symbol::kw; use rustc_span::Span; +use rustc_span::symbol::kw; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/wildcard_imports.rs b/src/tools/clippy/clippy_lints/src/wildcard_imports.rs index 7d9e58ad2f8..405310512df 100644 --- a/src/tools/clippy/clippy_lints/src/wildcard_imports.rs +++ b/src/tools/clippy/clippy_lints/src/wildcard_imports.rs @@ -10,7 +10,7 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty; use rustc_session::impl_lint_pass; use rustc_span::symbol::kw; -use rustc_span::{sym, BytePos}; +use rustc_span::{BytePos, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/write.rs b/src/tools/clippy/clippy_lints/src/write.rs index ec5a5896fb2..1dd46ed5a89 100644 --- a/src/tools/clippy/clippy_lints/src/write.rs +++ b/src/tools/clippy/clippy_lints/src/write.rs @@ -1,8 +1,8 @@ use clippy_config::Conf; use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use clippy_utils::is_in_test; -use clippy_utils::macros::{format_arg_removal_span, root_macro_call_first_node, FormatArgsStorage, MacroCall}; -use clippy_utils::source::{expand_past_previous_comma, SpanRangeExt}; +use clippy_utils::macros::{FormatArgsStorage, MacroCall, format_arg_removal_span, root_macro_call_first_node}; +use clippy_utils::source::{SpanRangeExt, expand_past_previous_comma}; use rustc_ast::token::LitKind; use rustc_ast::{ FormatArgPosition, FormatArgPositionKind, FormatArgs, FormatArgsPiece, FormatOptions, FormatPlaceholder, @@ -12,7 +12,7 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, Impl, Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; -use rustc_span::{sym, BytePos, Span}; +use rustc_span::{BytePos, Span, sym}; declare_clippy_lint! { /// ### What it does diff --git a/src/tools/clippy/clippy_lints/src/zombie_processes.rs b/src/tools/clippy/clippy_lints/src/zombie_processes.rs new file mode 100644 index 00000000000..8d9241cc7d9 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/zombie_processes.rs @@ -0,0 +1,341 @@ +use ControlFlow::{Break, Continue}; +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::{fn_def_id, get_enclosing_block, match_any_def_paths, match_def_path, path_to_local_id, paths}; +use rustc_ast::Mutability; +use rustc_errors::Applicability; +use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_local}; +use rustc_hir::{Expr, ExprKind, HirId, LetStmt, Node, PatKind, Stmt, StmtKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::hir::nested_filter; +use rustc_session::declare_lint_pass; +use rustc_span::sym; +use std::ops::ControlFlow; + +declare_clippy_lint! { + /// ### What it does + /// Looks for code that spawns a process but never calls `wait()` on the child. + /// + /// ### Why is this bad? + /// As explained in the [standard library documentation](https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning), + /// calling `wait()` is necessary on Unix platforms to properly release all OS resources associated with the process. + /// Not doing so will effectively leak process IDs and/or other limited global resources, + /// which can eventually lead to resource exhaustion, so it's recommended to call `wait()` in long-running applications. + /// Such processes are called "zombie processes". + /// + /// ### Example + /// ```rust + /// use std::process::Command; + /// + /// let _child = Command::new("ls").spawn().expect("failed to execute child"); + /// ``` + /// Use instead: + /// ```rust + /// use std::process::Command; + /// + /// let mut child = Command::new("ls").spawn().expect("failed to execute child"); + /// child.wait().expect("failed to wait on child"); + /// ``` + #[clippy::version = "1.74.0"] + pub ZOMBIE_PROCESSES, + suspicious, + "not waiting on a spawned child process" +} +declare_lint_pass!(ZombieProcesses => [ZOMBIE_PROCESSES]); + +impl<'tcx> LateLintPass<'tcx> for ZombieProcesses { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if let ExprKind::Call(..) | ExprKind::MethodCall(..) = expr.kind + && let Some(child_adt) = cx.typeck_results().expr_ty(expr).ty_adt_def() + && match_def_path(cx, child_adt.did(), &paths::CHILD) + { + match cx.tcx.parent_hir_node(expr.hir_id) { + Node::LetStmt(local) + if let PatKind::Binding(_, local_id, ..) = local.pat.kind + && let Some(enclosing_block) = get_enclosing_block(cx, expr.hir_id) => + { + let mut vis = WaitFinder::WalkUpTo(cx, local_id); + + // If it does have a `wait()` call, we're done. Don't lint. + if let Break(BreakReason::WaitFound) = walk_block(&mut vis, enclosing_block) { + return; + } + + // Don't emit a suggestion since the binding is used later + check(cx, expr, false); + }, + Node::LetStmt(&LetStmt { pat, .. }) if let PatKind::Wild = pat.kind => { + // `let _ = child;`, also dropped immediately without `wait()`ing + check(cx, expr, true); + }, + Node::Stmt(&Stmt { + kind: StmtKind::Semi(_), + .. + }) => { + // Immediately dropped. E.g. `std::process::Command::new("echo").spawn().unwrap();` + check(cx, expr, true); + }, + _ => {}, + } + } + } +} + +enum BreakReason { + WaitFound, + EarlyReturn, +} + +/// A visitor responsible for finding a `wait()` call on a local variable. +/// +/// Conditional `wait()` calls are assumed to not call wait: +/// ```ignore +/// let mut c = Command::new("").spawn().unwrap(); +/// if true { +/// c.wait(); +/// } +/// ``` +/// +/// Note that this visitor does NOT explicitly look for `wait()` calls directly, but rather does the +/// inverse -- checking if all uses of the local are either: +/// - a field access (`child.{stderr,stdin,stdout}`) +/// - calling `id` or `kill` +/// - no use at all (e.g. `let _x = child;`) +/// - taking a shared reference (`&`), `wait()` can't go through that +/// +/// None of these are sufficient to prevent zombie processes. +/// Doing it like this means more FNs, but FNs are better than FPs. +/// +/// `return` expressions, conditional or not, short-circuit the visitor because +/// if a `wait()` call hadn't been found at that point, it might never reach one at a later point: +/// ```ignore +/// let mut c = Command::new("").spawn().unwrap(); +/// if true { +/// return; // Break(BreakReason::EarlyReturn) +/// } +/// c.wait(); // this might not be reachable +/// ``` +enum WaitFinder<'a, 'tcx> { + WalkUpTo(&'a LateContext<'tcx>, HirId), + Found(&'a LateContext<'tcx>, HirId), +} + +impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { + type NestedFilter = nested_filter::OnlyBodies; + type Result = ControlFlow<BreakReason>; + + fn visit_local(&mut self, l: &'tcx LetStmt<'tcx>) -> Self::Result { + if let Self::WalkUpTo(cx, local_id) = *self + && let PatKind::Binding(_, pat_id, ..) = l.pat.kind + && local_id == pat_id + { + *self = Self::Found(cx, local_id); + } + + walk_local(self, l) + } + + fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) -> Self::Result { + let Self::Found(cx, local_id) = *self else { + return walk_expr(self, ex); + }; + + if path_to_local_id(ex, local_id) { + match cx.tcx.parent_hir_node(ex.hir_id) { + Node::Stmt(Stmt { + kind: StmtKind::Semi(_), + .. + }) => {}, + Node::Expr(expr) if let ExprKind::Field(..) = expr.kind => {}, + Node::Expr(expr) if let ExprKind::AddrOf(_, Mutability::Not, _) = expr.kind => {}, + Node::Expr(expr) + if let Some(fn_did) = fn_def_id(cx, expr) + && match_any_def_paths(cx, fn_did, &[&paths::CHILD_ID, &paths::CHILD_KILL]).is_some() => {}, + + // Conservatively assume that all other kinds of nodes call `.wait()` somehow. + _ => return Break(BreakReason::WaitFound), + } + } else { + match ex.kind { + ExprKind::Ret(..) => return Break(BreakReason::EarlyReturn), + ExprKind::If(cond, then, None) => { + walk_expr(self, cond)?; + + // A `wait()` call in an if expression with no else is not enough: + // + // let c = spawn(); + // if true { + // c.wait(); + // } + // + // This might not call wait(). However, early returns are propagated, + // because they might lead to a later wait() not being called. + if let Break(BreakReason::EarlyReturn) = walk_expr(self, then) { + return Break(BreakReason::EarlyReturn); + } + + return Continue(()); + }, + + ExprKind::If(cond, then, Some(else_)) => { + walk_expr(self, cond)?; + + #[expect(clippy::unnested_or_patterns)] + match (walk_expr(self, then), walk_expr(self, else_)) { + (Continue(()), Continue(())) + + // `wait()` in one branch but nothing in the other does not count + | (Continue(()), Break(BreakReason::WaitFound)) + | (Break(BreakReason::WaitFound), Continue(())) => {}, + + // `wait()` in both branches is ok + (Break(BreakReason::WaitFound), Break(BreakReason::WaitFound)) => { + return Break(BreakReason::WaitFound); + }, + + // Propagate early returns in either branch + (Break(BreakReason::EarlyReturn), _) | (_, Break(BreakReason::EarlyReturn)) => { + return Break(BreakReason::EarlyReturn); + }, + } + + return Continue(()); + }, + _ => {}, + } + } + + walk_expr(self, ex) + } + + fn nested_visit_map(&mut self) -> Self::Map { + let (Self::Found(cx, _) | Self::WalkUpTo(cx, _)) = self; + cx.tcx.hir() + } +} + +/// This function has shared logic between the different kinds of nodes that can trigger the lint. +/// +/// In particular, `let <binding> = <expr that spawns child>;` requires some custom additional logic +/// such as checking that the binding is not used in certain ways, which isn't necessary for +/// `let _ = <expr that spawns child>;`. +/// +/// This checks if the program doesn't unconditionally exit after the spawn expression. +fn check<'tcx>(cx: &LateContext<'tcx>, spawn_expr: &'tcx Expr<'tcx>, emit_suggestion: bool) { + let Some(block) = get_enclosing_block(cx, spawn_expr.hir_id) else { + return; + }; + + let mut vis = ExitPointFinder { + cx, + state: ExitPointState::WalkUpTo(spawn_expr.hir_id), + }; + if let Break(ExitCallFound) = vis.visit_block(block) { + // Visitor found an unconditional `exit()` call, so don't lint. + return; + } + + span_lint_and_then( + cx, + ZOMBIE_PROCESSES, + spawn_expr.span, + "spawned process is never `wait()`ed on", + |diag| { + if emit_suggestion { + diag.span_suggestion( + spawn_expr.span.shrink_to_hi(), + "try", + ".wait()", + Applicability::MaybeIncorrect, + ); + } else { + diag.note("consider calling `.wait()`"); + } + + diag.note("not doing so might leave behind zombie processes") + .note("see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning"); + }, + ); +} + +/// Checks if the given expression exits the process. +fn is_exit_expression(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { + fn_def_id(cx, expr).is_some_and(|fn_did| { + cx.tcx.is_diagnostic_item(sym::process_exit, fn_did) || match_def_path(cx, fn_did, &paths::ABORT) + }) +} + +#[derive(Debug)] +enum ExitPointState { + /// Still walking up to the expression that initiated the visitor. + WalkUpTo(HirId), + /// We're inside of a control flow construct (e.g. `if`, `match`, `loop`) + /// Within this, we shouldn't accept any `exit()` calls in here, but we can leave all of these + /// constructs later and still continue looking for an `exit()` call afterwards. Example: + /// ```ignore + /// Command::new("").spawn().unwrap(); + /// + /// if true { // depth=1 + /// if true { // depth=2 + /// match () { // depth=3 + /// () => loop { // depth=4 + /// + /// std::process::exit(); + /// ^^^^^^^^^^^^^^^^^^^^^ conditional exit call, ignored + /// + /// } // depth=3 + /// } // depth=2 + /// } // depth=1 + /// } // depth=0 + /// + /// std::process::exit(); + /// ^^^^^^^^^^^^^^^^^^^^^ this exit call is accepted because we're now unconditionally calling it + /// ``` + /// We can only get into this state from `NoExit`. + InControlFlow { depth: u32 }, + /// No exit call found yet, but looking for one. + NoExit, +} + +fn expr_enters_control_flow(expr: &Expr<'_>) -> bool { + matches!(expr.kind, ExprKind::If(..) | ExprKind::Match(..) | ExprKind::Loop(..)) +} + +struct ExitPointFinder<'a, 'tcx> { + state: ExitPointState, + cx: &'a LateContext<'tcx>, +} + +struct ExitCallFound; + +impl<'tcx> Visitor<'tcx> for ExitPointFinder<'_, 'tcx> { + type Result = ControlFlow<ExitCallFound>; + + fn visit_expr(&mut self, expr: &'tcx Expr<'tcx>) -> Self::Result { + match self.state { + ExitPointState::WalkUpTo(id) if expr.hir_id == id => { + self.state = ExitPointState::NoExit; + walk_expr(self, expr) + }, + ExitPointState::NoExit if expr_enters_control_flow(expr) => { + self.state = ExitPointState::InControlFlow { depth: 1 }; + walk_expr(self, expr)?; + if let ExitPointState::InControlFlow { .. } = self.state { + self.state = ExitPointState::NoExit; + } + Continue(()) + }, + ExitPointState::NoExit if is_exit_expression(self.cx, expr) => Break(ExitCallFound), + ExitPointState::InControlFlow { ref mut depth } if expr_enters_control_flow(expr) => { + *depth += 1; + walk_expr(self, expr)?; + match self.state { + ExitPointState::InControlFlow { depth: 1 } => self.state = ExitPointState::NoExit, + ExitPointState::InControlFlow { ref mut depth } => *depth -= 1, + _ => {}, + } + Continue(()) + }, + _ => Continue(()), + } + } +} diff --git a/src/tools/clippy/clippy_utils/Cargo.toml b/src/tools/clippy/clippy_utils/Cargo.toml index 629ce9d04d4..fe30b10c435 100644 --- a/src/tools/clippy/clippy_utils/Cargo.toml +++ b/src/tools/clippy/clippy_utils/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "clippy_utils" -version = "0.1.82" +version = "0.1.83" edition = "2021" publish = false diff --git a/src/tools/clippy/clippy_utils/src/ast_utils.rs b/src/tools/clippy/clippy_utils/src/ast_utils.rs index de8bbb619f8..68f74e52ed7 100644 --- a/src/tools/clippy/clippy_utils/src/ast_utils.rs +++ b/src/tools/clippy/clippy_utils/src/ast_utils.rs @@ -37,20 +37,27 @@ pub fn eq_pat(l: &Pat, r: &Pat) -> bool { (_, Paren(r)) => eq_pat(l, r), (Wild, Wild) | (Rest, Rest) => true, (Lit(l), Lit(r)) => eq_expr(l, r), - (Ident(b1, i1, s1), Ident(b2, i2, s2)) => b1 == b2 && eq_id(*i1, *i2) && both(s1, s2, |l, r| eq_pat(l, r)), + (Ident(b1, i1, s1), Ident(b2, i2, s2)) => { + b1 == b2 && eq_id(*i1, *i2) && both(s1.as_deref(), s2.as_deref(), eq_pat) + }, (Range(lf, lt, le), Range(rf, rt, re)) => { - eq_expr_opt(lf, rf) && eq_expr_opt(lt, rt) && eq_range_end(&le.node, &re.node) + eq_expr_opt(lf.as_ref(), rf.as_ref()) + && eq_expr_opt(lt.as_ref(), rt.as_ref()) + && eq_range_end(&le.node, &re.node) }, (Box(l), Box(r)) | (Ref(l, Mutability::Not), Ref(r, Mutability::Not)) | (Ref(l, Mutability::Mut), Ref(r, Mutability::Mut)) => eq_pat(l, r), (Tuple(l), Tuple(r)) | (Slice(l), Slice(r)) => over(l, r, |l, r| eq_pat(l, r)), - (Path(lq, lp), Path(rq, rp)) => both(lq, rq, eq_qself) && eq_path(lp, rp), + (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), (TupleStruct(lqself, lp, lfs), TupleStruct(rqself, rp, rfs)) => { - eq_maybe_qself(lqself, rqself) && eq_path(lp, rp) && over(lfs, rfs, |l, r| eq_pat(l, r)) + eq_maybe_qself(lqself.as_ref(), rqself.as_ref()) && eq_path(lp, rp) && over(lfs, rfs, |l, r| eq_pat(l, r)) }, (Struct(lqself, lp, lfs, lr), Struct(rqself, rp, rfs, rr)) => { - lr == rr && eq_maybe_qself(lqself, rqself) && eq_path(lp, rp) && unordered_over(lfs, rfs, eq_field_pat) + lr == rr + && eq_maybe_qself(lqself.as_ref(), rqself.as_ref()) + && eq_path(lp, rp) + && unordered_over(lfs, rfs, eq_field_pat) }, (Or(ls), Or(rs)) => unordered_over(ls, rs, |l, r| eq_pat(l, r)), (MacCall(l), MacCall(r)) => eq_mac_call(l, r), @@ -79,7 +86,7 @@ pub fn eq_qself(l: &P<QSelf>, r: &P<QSelf>) -> bool { l.position == r.position && eq_ty(&l.ty, &r.ty) } -pub fn eq_maybe_qself(l: &Option<P<QSelf>>, r: &Option<P<QSelf>>) -> bool { +pub fn eq_maybe_qself(l: Option<&P<QSelf>>, r: Option<&P<QSelf>>) -> bool { match (l, r) { (Some(l), Some(r)) => eq_qself(l, r), (None, None) => true, @@ -92,7 +99,7 @@ pub fn eq_path(l: &Path, r: &Path) -> bool { } pub fn eq_path_seg(l: &PathSegment, r: &PathSegment) -> bool { - eq_id(l.ident, r.ident) && both(&l.args, &r.args, |l, r| eq_generic_args(l, r)) + eq_id(l.ident, r.ident) && both(l.args.as_ref(), r.args.as_ref(), |l, r| eq_generic_args(l, r)) } pub fn eq_generic_args(l: &GenericArgs, r: &GenericArgs) -> bool { @@ -122,7 +129,7 @@ pub fn eq_generic_arg(l: &GenericArg, r: &GenericArg) -> bool { } } -pub fn eq_expr_opt(l: &Option<P<Expr>>, r: &Option<P<Expr>>) -> bool { +pub fn eq_expr_opt(l: Option<&P<Expr>>, r: Option<&P<Expr>>) -> bool { both(l, r, |l, r| eq_expr(l, r)) } @@ -169,8 +176,12 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool { (Lit(l), Lit(r)) => l == r, (Cast(l, lt), Cast(r, rt)) | (Type(l, lt), Type(r, rt)) => eq_expr(l, r) && eq_ty(lt, rt), (Let(lp, le, _, _), Let(rp, re, _, _)) => eq_pat(lp, rp) && eq_expr(le, re), - (If(lc, lt, le), If(rc, rt, re)) => eq_expr(lc, rc) && eq_block(lt, rt) && eq_expr_opt(le, re), - (While(lc, lt, ll), While(rc, rt, rl)) => eq_label(ll, rl) && eq_expr(lc, rc) && eq_block(lt, rt), + (If(lc, lt, le), If(rc, rt, re)) => { + eq_expr(lc, rc) && eq_block(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) + }, + (While(lc, lt, ll), While(rc, rt, rl)) => { + eq_label(ll.as_ref(), rl.as_ref()) && eq_expr(lc, rc) && eq_block(lt, rt) + }, ( ForLoop { pat: lp, @@ -186,13 +197,13 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool { label: rl, kind: rk, }, - ) => eq_label(ll, rl) && eq_pat(lp, rp) && eq_expr(li, ri) && eq_block(lt, rt) && lk == rk, - (Loop(lt, ll, _), Loop(rt, rl, _)) => eq_label(ll, rl) && eq_block(lt, rt), - (Block(lb, ll), Block(rb, rl)) => eq_label(ll, rl) && eq_block(lb, rb), + ) => eq_label(ll.as_ref(), rl.as_ref()) && eq_pat(lp, rp) && eq_expr(li, ri) && eq_block(lt, rt) && lk == rk, + (Loop(lt, ll, _), Loop(rt, rl, _)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_block(lt, rt), + (Block(lb, ll), Block(rb, rl)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_block(lb, rb), (TryBlock(l), TryBlock(r)) => eq_block(l, r), - (Yield(l), Yield(r)) | (Ret(l), Ret(r)) => eq_expr_opt(l, r), - (Break(ll, le), Break(rl, re)) => eq_label(ll, rl) && eq_expr_opt(le, re), - (Continue(ll), Continue(rl)) => eq_label(ll, rl), + (Yield(l), Yield(r)) | (Ret(l), Ret(r)) => eq_expr_opt(l.as_ref(), r.as_ref()), + (Break(ll, le), Break(rl, re)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_expr_opt(le.as_ref(), re.as_ref()), + (Continue(ll), Continue(rl)) => eq_label(ll.as_ref(), rl.as_ref()), (Assign(l1, l2, _), Assign(r1, r2, _)) | (Index(l1, l2, _), Index(r1, r2, _)) => { eq_expr(l1, r1) && eq_expr(l2, r2) }, @@ -227,12 +238,14 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool { && eq_expr(le, re) }, (Gen(lc, lb, lk, _), Gen(rc, rb, rk, _)) => lc == rc && eq_block(lb, rb) && lk == rk, - (Range(lf, lt, ll), Range(rf, rt, rl)) => ll == rl && eq_expr_opt(lf, rf) && eq_expr_opt(lt, rt), + (Range(lf, lt, ll), Range(rf, rt, rl)) => { + ll == rl && eq_expr_opt(lf.as_ref(), rf.as_ref()) && eq_expr_opt(lt.as_ref(), rt.as_ref()) + }, (AddrOf(lbk, lm, le), AddrOf(rbk, rm, re)) => lbk == rbk && lm == rm && eq_expr(le, re), - (Path(lq, lp), Path(rq, rp)) => both(lq, rq, eq_qself) && eq_path(lp, rp), + (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), (MacCall(l), MacCall(r)) => eq_mac_call(l, r), (Struct(lse), Struct(rse)) => { - eq_maybe_qself(&lse.qself, &rse.qself) + eq_maybe_qself(lse.qself.as_ref(), rse.qself.as_ref()) && eq_path(&lse.path, &rse.path) && eq_struct_rest(&lse.rest, &rse.rest) && unordered_over(&lse.fields, &rse.fields, eq_field) @@ -242,13 +255,16 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool { } fn eq_coroutine_kind(a: Option<CoroutineKind>, b: Option<CoroutineKind>) -> bool { - match (a, b) { + matches!( + (a, b), (Some(CoroutineKind::Async { .. }), Some(CoroutineKind::Async { .. })) - | (Some(CoroutineKind::Gen { .. }), Some(CoroutineKind::Gen { .. })) - | (Some(CoroutineKind::AsyncGen { .. }), Some(CoroutineKind::AsyncGen { .. })) - | (None, None) => true, - _ => false, - } + | (Some(CoroutineKind::Gen { .. }), Some(CoroutineKind::Gen { .. })) + | ( + Some(CoroutineKind::AsyncGen { .. }), + Some(CoroutineKind::AsyncGen { .. }) + ) + | (None, None) + ) } pub fn eq_field(l: &ExprField, r: &ExprField) -> bool { @@ -261,12 +277,12 @@ pub fn eq_field(l: &ExprField, r: &ExprField) -> bool { pub fn eq_arm(l: &Arm, r: &Arm) -> bool { l.is_placeholder == r.is_placeholder && eq_pat(&l.pat, &r.pat) - && eq_expr_opt(&l.body, &r.body) - && eq_expr_opt(&l.guard, &r.guard) + && eq_expr_opt(l.body.as_ref(), r.body.as_ref()) + && eq_expr_opt(l.guard.as_ref(), r.guard.as_ref()) && over(&l.attrs, &r.attrs, eq_attr) } -pub fn eq_label(l: &Option<Label>, r: &Option<Label>) -> bool { +pub fn eq_label(l: Option<&Label>, r: Option<&Label>) -> bool { both(l, r, |l, r| eq_id(l.ident, r.ident)) } @@ -279,7 +295,7 @@ pub fn eq_stmt(l: &Stmt, r: &Stmt) -> bool { match (&l.kind, &r.kind) { (Let(l), Let(r)) => { eq_pat(&l.pat, &r.pat) - && both(&l.ty, &r.ty, |l, r| eq_ty(l, r)) + && both(l.ty.as_ref(), r.ty.as_ref(), |l, r| eq_ty(l, r)) && eq_local_kind(&l.kind, &r.kind) && over(&l.attrs, &r.attrs, eq_attr) }, @@ -326,7 +342,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { expr: re, safety: rs, }), - ) => lm == rm && ls == rs && eq_ty(lt, rt) && eq_expr_opt(le, re), + ) => lm == rm && ls == rs && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), ( Const(box ConstItem { defaultness: ld, @@ -340,7 +356,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { ty: rt, expr: re, }), - ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le, re), + ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), ( Fn(box ast::Fn { defaultness: ld, @@ -355,7 +371,10 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { body: rb, }), ) => { - eq_defaultness(*ld, *rd) && eq_fn_sig(lf, rf) && eq_generics(lg, rg) && both(lb, rb, |l, r| eq_block(l, r)) + eq_defaultness(*ld, *rd) + && eq_fn_sig(lf, rf) + && eq_generics(lg, rg) + && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) }, (Mod(lu, lmk), Mod(ru, rmk)) => { lu == ru @@ -368,7 +387,8 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { } }, (ForeignMod(l), ForeignMod(r)) => { - both(&l.abi, &r.abi, eq_str_lit) && over(&l.items, &r.items, |l, r| eq_item(l, r, eq_foreign_item_kind)) + both(l.abi.as_ref(), r.abi.as_ref(), eq_str_lit) + && over(&l.items, &r.items, |l, r| eq_item(l, r, eq_foreign_item_kind)) }, ( TyAlias(box ast::TyAlias { @@ -389,7 +409,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && over(lb, rb, eq_generic_bound) - && both(lt, rt, |l, r| eq_ty(l, r)) + && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) }, (Enum(le, lg), Enum(re, rg)) => over(&le.variants, &re.variants, eq_variant) && eq_generics(lg, rg), (Struct(lv, lg), Struct(rv, rg)) | (Union(lv, lg), Union(rv, rg)) => { @@ -445,7 +465,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { && eq_defaultness(*ld, *rd) && matches!(lc, ast::Const::No) == matches!(rc, ast::Const::No) && eq_generics(lg, rg) - && both(lot, rot, |l, r| eq_path(&l.path, &r.path)) + && both(lot.as_ref(), rot.as_ref(), |l, r| eq_path(&l.path, &r.path)) && eq_ty(lst, rst) && over(li, ri, |l, r| eq_item(l, r, eq_assoc_item_kind)) }, @@ -471,7 +491,7 @@ pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool { expr: re, safety: rs, }), - ) => lm == rm && eq_ty(lt, rt) && eq_expr_opt(le, re) && ls == rs, + ) => lm == rm && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) && ls == rs, ( Fn(box ast::Fn { defaultness: ld, @@ -486,7 +506,10 @@ pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool { body: rb, }), ) => { - eq_defaultness(*ld, *rd) && eq_fn_sig(lf, rf) && eq_generics(lg, rg) && both(lb, rb, |l, r| eq_block(l, r)) + eq_defaultness(*ld, *rd) + && eq_fn_sig(lf, rf) + && eq_generics(lg, rg) + && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) }, ( TyAlias(box ast::TyAlias { @@ -507,7 +530,7 @@ pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool { eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && over(lb, rb, eq_generic_bound) - && both(lt, rt, |l, r| eq_ty(l, r)) + && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) }, (MacCall(l), MacCall(r)) => eq_mac_call(l, r), _ => false, @@ -530,7 +553,7 @@ pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool { ty: rt, expr: re, }), - ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le, re), + ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), ( Fn(box ast::Fn { defaultness: ld, @@ -545,7 +568,10 @@ pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool { body: rb, }), ) => { - eq_defaultness(*ld, *rd) && eq_fn_sig(lf, rf) && eq_generics(lg, rg) && both(lb, rb, |l, r| eq_block(l, r)) + eq_defaultness(*ld, *rd) + && eq_fn_sig(lf, rf) + && eq_generics(lg, rg) + && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) }, ( Type(box TyAlias { @@ -566,7 +592,7 @@ pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool { eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && over(lb, rb, eq_generic_bound) - && both(lt, rt, |l, r| eq_ty(l, r)) + && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) }, (MacCall(l), MacCall(r)) => eq_mac_call(l, r), _ => false, @@ -579,7 +605,9 @@ pub fn eq_variant(l: &Variant, r: &Variant) -> bool { && eq_vis(&l.vis, &r.vis) && eq_id(l.ident, r.ident) && eq_variant_data(&l.data, &r.data) - && both(&l.disr_expr, &r.disr_expr, |l, r| eq_expr(&l.value, &r.value)) + && both(l.disr_expr.as_ref(), r.disr_expr.as_ref(), |l, r| { + eq_expr(&l.value, &r.value) + }) } pub fn eq_variant_data(l: &VariantData, r: &VariantData) -> bool { @@ -597,7 +625,7 @@ pub fn eq_struct_field(l: &FieldDef, r: &FieldDef) -> bool { l.is_placeholder == r.is_placeholder && over(&l.attrs, &r.attrs, eq_attr) && eq_vis(&l.vis, &r.vis) - && both(&l.ident, &r.ident, |l, r| eq_id(*l, *r)) + && both(l.ident.as_ref(), r.ident.as_ref(), |l, r| eq_id(*l, *r)) && eq_ty(&l.ty, &r.ty) } @@ -661,7 +689,7 @@ pub fn eq_use_tree_kind(l: &UseTreeKind, r: &UseTreeKind) -> bool { use UseTreeKind::*; match (l, r) { (Glob, Glob) => true, - (Simple(l), Simple(r)) => both(l, r, |l, r| eq_id(*l, *r)), + (Simple(l), Simple(r)) => both(l.as_ref(), r.as_ref(), |l, r| eq_id(*l, *r)), (Nested { items: l, .. }, Nested { items: r, .. }) => over(l, r, |(l, _), (r, _)| eq_use_tree(l, r)), _ => false, } @@ -723,7 +751,7 @@ pub fn eq_ty(l: &Ty, r: &Ty) -> bool { (Array(le, ls), Array(re, rs)) => eq_ty(le, re) && eq_expr(&ls.value, &rs.value), (Ptr(l), Ptr(r)) => l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty), (Ref(ll, l), Ref(rl, r)) => { - both(ll, rl, |l, r| eq_id(l.ident, r.ident)) && l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty) + both(ll.as_ref(), rl.as_ref(), |l, r| eq_id(l.ident, r.ident)) && l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty) }, (BareFn(l), BareFn(r)) => { l.safety == r.safety @@ -732,7 +760,7 @@ pub fn eq_ty(l: &Ty, r: &Ty) -> bool { && eq_fn_decl(&l.decl, &r.decl) }, (Tup(l), Tup(r)) => over(l, r, |l, r| eq_ty(l, r)), - (Path(lq, lp), Path(rq, rp)) => both(lq, rq, eq_qself) && eq_path(lp, rp), + (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), (TraitObject(lg, ls), TraitObject(rg, rs)) => ls == rs && over(lg, rg, eq_generic_bound), (ImplTrait(_, lg), ImplTrait(_, rg)) => over(lg, rg, eq_generic_bound), (Typeof(l), Typeof(r)) => eq_expr(&l.value, &r.value), @@ -768,7 +796,7 @@ pub fn eq_generic_param(l: &GenericParam, r: &GenericParam) -> bool { && over(&l.bounds, &r.bounds, eq_generic_bound) && match (&l.kind, &r.kind) { (Lifetime, Lifetime) => true, - (Type { default: l }, Type { default: r }) => both(l, r, |l, r| eq_ty(l, r)), + (Type { default: l }, Type { default: r }) => both(l.as_ref(), r.as_ref(), |l, r| eq_ty(l, r)), ( Const { ty: lt, @@ -780,7 +808,7 @@ pub fn eq_generic_param(l: &GenericParam, r: &GenericParam) -> bool { kw_span: _, default: rd, }, - ) => eq_ty(lt, rt) && both(ld, rd, eq_anon_const), + ) => eq_ty(lt, rt) && both(ld.as_ref(), rd.as_ref(), eq_anon_const), _ => false, } && over(&l.attrs, &r.attrs, eq_attr) diff --git a/src/tools/clippy/clippy_utils/src/ast_utils/ident_iter.rs b/src/tools/clippy/clippy_utils/src/ast_utils/ident_iter.rs index eefcbabd835..032cd3ed739 100644 --- a/src/tools/clippy/clippy_utils/src/ast_utils/ident_iter.rs +++ b/src/tools/clippy/clippy_utils/src/ast_utils/ident_iter.rs @@ -1,5 +1,5 @@ use core::iter::FusedIterator; -use rustc_ast::visit::{walk_attribute, walk_expr, Visitor}; +use rustc_ast::visit::{Visitor, walk_attribute, walk_expr}; use rustc_ast::{Attribute, Expr}; use rustc_span::symbol::Ident; diff --git a/src/tools/clippy/clippy_utils/src/attrs.rs b/src/tools/clippy/clippy_utils/src/attrs.rs index 42c8b218d14..edc9c6ccdff 100644 --- a/src/tools/clippy/clippy_utils/src/attrs.rs +++ b/src/tools/clippy/clippy_utils/src/attrs.rs @@ -4,7 +4,7 @@ use rustc_lexer::TokenKind; use rustc_lint::LateContext; use rustc_middle::ty::{AdtDef, TyCtxt}; use rustc_session::Session; -use rustc_span::{sym, Span}; +use rustc_span::{Span, sym}; use std::str::FromStr; use crate::source::SpanRangeExt; @@ -183,15 +183,15 @@ pub fn span_contains_cfg(cx: &LateContext<'_>, s: Span) -> bool { let mut iter = tokenize_with_text(src); // Search for the token sequence [`#`, `[`, `cfg`] - while iter.any(|(t, _)| matches!(t, TokenKind::Pound)) { - let mut iter = iter.by_ref().skip_while(|(t, _)| { + while iter.any(|(t, ..)| matches!(t, TokenKind::Pound)) { + let mut iter = iter.by_ref().skip_while(|(t, ..)| { matches!( t, TokenKind::Whitespace | TokenKind::LineComment { .. } | TokenKind::BlockComment { .. } ) }); - if matches!(iter.next(), Some((TokenKind::OpenBracket, _))) - && matches!(iter.next(), Some((TokenKind::Ident, "cfg"))) + if matches!(iter.next(), Some((TokenKind::OpenBracket, ..))) + && matches!(iter.next(), Some((TokenKind::Ident, "cfg", _))) { return true; } diff --git a/src/tools/clippy/clippy_utils/src/check_proc_macro.rs b/src/tools/clippy/clippy_utils/src/check_proc_macro.rs index 2bd6837d973..b18997e6ee4 100644 --- a/src/tools/clippy/clippy_utils/src/check_proc_macro.rs +++ b/src/tools/clippy/clippy_utils/src/check_proc_macro.rs @@ -12,9 +12,9 @@ //! code was written, and check if the span contains that text. Note this will only work correctly //! if the span is not from a `macro_rules` based macro. +use rustc_ast::AttrStyle; use rustc_ast::ast::{AttrKind, Attribute, IntTy, LitIntType, LitKind, StrStyle, TraitObjectSyntax, UintTy}; use rustc_ast::token::CommentKind; -use rustc_ast::AttrStyle; use rustc_hir::intravisit::FnKind; use rustc_hir::{ Block, BlockCheckMode, Body, Closure, Destination, Expr, ExprKind, FieldDef, FnHeader, FnRetTy, HirId, Impl, @@ -24,7 +24,7 @@ use rustc_hir::{ use rustc_lint::{LateContext, LintContext}; use rustc_middle::ty::TyCtxt; use rustc_session::Session; -use rustc_span::symbol::{kw, Ident}; +use rustc_span::symbol::{Ident, kw}; use rustc_span::{Span, Symbol}; use rustc_target::spec::abi::Abi; @@ -220,7 +220,7 @@ fn item_search_pat(item: &Item<'_>) -> (Pat, Pat) { ItemKind::Const(..) => (Pat::Str("const"), Pat::Str(";")), ItemKind::Fn(sig, ..) => (fn_header_search_pat(sig.header), Pat::Str("")), ItemKind::ForeignMod { .. } => (Pat::Str("extern"), Pat::Str("}")), - ItemKind::TyAlias(..) | ItemKind::OpaqueTy(_) => (Pat::Str("type"), Pat::Str(";")), + ItemKind::TyAlias(..) => (Pat::Str("type"), Pat::Str(";")), ItemKind::Enum(..) => (Pat::Str("enum"), Pat::Str("}")), ItemKind::Struct(VariantData::Struct { .. }, _) => (Pat::Str("struct"), Pat::Str("}")), ItemKind::Struct(..) => (Pat::Str("struct"), Pat::Str(";")), diff --git a/src/tools/clippy/clippy_utils/src/consts.rs b/src/tools/clippy/clippy_utils/src/consts.rs index 760d5bc95f7..510034876e0 100644 --- a/src/tools/clippy/clippy_utils/src/consts.rs +++ b/src/tools/clippy/clippy_utils/src/consts.rs @@ -1,24 +1,24 @@ #![allow(clippy::float_cmp)] use crate::macros::HirNode; -use crate::source::{walk_span_to_context, SpanRangeExt}; +use crate::source::{SpanRangeExt, walk_span_to_context}; use crate::{clip, is_direct_expn_of, sext, unsext}; -use rustc_apfloat::ieee::{Half, Quad}; use rustc_apfloat::Float; +use rustc_apfloat::ieee::{Half, Quad}; use rustc_ast::ast::{self, LitFloatType, LitKind}; use rustc_data_structures::sync::Lrc; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{BinOp, BinOpKind, Block, ConstBlock, Expr, ExprKind, HirId, Item, ItemKind, Node, QPath, UnOp}; use rustc_lexer::tokenize; use rustc_lint::LateContext; -use rustc_middle::mir::interpret::{alloc_range, Scalar}; use rustc_middle::mir::ConstValue; +use rustc_middle::mir::interpret::{Scalar, alloc_range}; use rustc_middle::ty::{self, FloatTy, IntTy, ParamEnv, ScalarInt, Ty, TyCtxt, TypeckResults, UintTy}; use rustc_middle::{bug, mir, span_bug}; use rustc_span::def_id::DefId; use rustc_span::symbol::Ident; -use rustc_span::{sym, SyntaxContext}; +use rustc_span::{SyntaxContext, sym}; use rustc_target::abi::Size; use std::cell::Cell; use std::cmp::Ordering; @@ -118,7 +118,7 @@ impl IntTypeBounds for IntTy { } } -impl<'tcx> PartialEq for Constant<'tcx> { +impl PartialEq for Constant<'_> { fn eq(&self, other: &Self) -> bool { match (self, other) { (Self::Str(ls), Self::Str(rs)) => ls == rs, @@ -147,7 +147,7 @@ impl<'tcx> PartialEq for Constant<'tcx> { } } -impl<'tcx> Hash for Constant<'tcx> { +impl Hash for Constant<'_> { fn hash<H>(&self, state: &mut H) where H: Hasher, @@ -203,7 +203,7 @@ impl<'tcx> Hash for Constant<'tcx> { } } -impl<'tcx> Constant<'tcx> { +impl Constant<'_> { pub fn partial_cmp(tcx: TyCtxt<'_>, cmp_type: Ty<'_>, left: &Self, right: &Self) -> Option<Ordering> { match (left, right) { (Self::Str(ls), Self::Str(rs)) => Some(ls.cmp(rs)), @@ -581,7 +581,7 @@ impl<'tcx> ConstEvalCtxt<'tcx> { } fn constant_negate(&self, o: &Constant<'tcx>, ty: Ty<'_>) -> Option<Constant<'tcx>> { - use self::Constant::{Int, F32, F64}; + use self::Constant::{F32, F64, Int}; match *o { Int(value) => { let ty::Int(ity) = *ty.kind() else { return None }; @@ -870,10 +870,10 @@ pub fn mir_to_const<'tcx>(tcx: TyCtxt<'tcx>, result: mir::Const<'tcx>) -> Option let range = alloc_range(offset + size * idx, size); let val = alloc.read_scalar(&tcx, range, /* read_provenance */ false).ok()?; res.push(match flt { - FloatTy::F16 => Constant::F16(f16::from_bits(val.to_u16().ok()?)), - FloatTy::F32 => Constant::F32(f32::from_bits(val.to_u32().ok()?)), - FloatTy::F64 => Constant::F64(f64::from_bits(val.to_u64().ok()?)), - FloatTy::F128 => Constant::F128(f128::from_bits(val.to_u128().ok()?)), + FloatTy::F16 => Constant::F16(f16::from_bits(val.to_u16().discard_err()?)), + FloatTy::F32 => Constant::F32(f32::from_bits(val.to_u32().discard_err()?)), + FloatTy::F64 => Constant::F64(f64::from_bits(val.to_u64().discard_err()?)), + FloatTy::F128 => Constant::F128(f128::from_bits(val.to_u128().discard_err()?)), }); } Some(Constant::Vec(res)) @@ -903,7 +903,7 @@ fn mir_is_empty<'tcx>(tcx: TyCtxt<'tcx>, result: mir::Const<'tcx>) -> Option<boo .read_scalar(&tcx, alloc_range(offset + ptr_size, ptr_size), false) .ok()? .to_target_usize(&tcx) - .ok()?; + .discard_err()?; Some(len == 0) } else { None diff --git a/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs b/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs index a6dd12a28c5..a2e97919d04 100644 --- a/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs +++ b/src/tools/clippy/clippy_utils/src/eager_or_lazy.rs @@ -14,12 +14,12 @@ use crate::ty::{all_predicates_of, is_copy}; use crate::visitors::is_const_evaluatable; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; -use rustc_hir::intravisit::{walk_expr, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BinOpKind, Block, Expr, ExprKind, QPath, UnOp}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_middle::ty::adjustment::Adjust; -use rustc_span::{sym, Symbol}; +use rustc_span::{Symbol, sym}; use std::{cmp, ops}; #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)] @@ -118,7 +118,7 @@ fn expr_eagerness<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> EagernessS eagerness: EagernessSuggestion, } - impl<'cx, 'tcx> Visitor<'tcx> for V<'cx, 'tcx> { + impl<'tcx> Visitor<'tcx> for V<'_, 'tcx> { fn visit_expr(&mut self, e: &'tcx Expr<'_>) { use EagernessSuggestion::{ForceNoChange, Lazy, NoChange}; if self.eagerness == ForceNoChange { diff --git a/src/tools/clippy/clippy_utils/src/higher.rs b/src/tools/clippy/clippy_utils/src/higher.rs index e09cc9edf3a..3175a9a1dd3 100644 --- a/src/tools/clippy/clippy_utils/src/higher.rs +++ b/src/tools/clippy/clippy_utils/src/higher.rs @@ -3,14 +3,14 @@ #![deny(clippy::missing_docs_in_private_items)] use crate::consts::{ConstEvalCtxt, Constant}; -use crate::ty::is_type_diagnostic_item; use crate::is_expn_of; +use crate::ty::is_type_diagnostic_item; use rustc_ast::ast; use rustc_hir as hir; use rustc_hir::{Arm, Block, Expr, ExprKind, HirId, LoopSource, MatchSource, Node, Pat, QPath}; use rustc_lint::LateContext; -use rustc_span::{sym, symbol, Span}; +use rustc_span::{Span, sym, symbol}; /// The essential nodes of a desugared for loop as well as the entire span: /// `for pat in arg { body }` becomes `(pat, arg, body)`. Returns `(pat, arg, body, span)`. diff --git a/src/tools/clippy/clippy_utils/src/hir_utils.rs b/src/tools/clippy/clippy_utils/src/hir_utils.rs index f61ef9ac1b0..a19c1555d16 100644 --- a/src/tools/clippy/clippy_utils/src/hir_utils.rs +++ b/src/tools/clippy/clippy_utils/src/hir_utils.rs @@ -1,20 +1,20 @@ use crate::consts::ConstEvalCtxt; use crate::macros::macro_backtrace; -use crate::source::{walk_span_to_context, SpanRange, SpanRangeExt}; +use crate::source::{SpanRange, SpanRangeExt, walk_span_to_context}; use crate::tokenize_with_text; use rustc_ast::ast::InlineAsmTemplatePiece; use rustc_data_structures::fx::FxHasher; -use rustc_hir::def::Res; use rustc_hir::MatchSource::TryDesugar; +use rustc_hir::def::Res; use rustc_hir::{ ArrayLen, AssocItemConstraint, BinOpKind, BindingMode, Block, BodyId, Closure, ConstArg, ConstArgKind, Expr, ExprField, ExprKind, FnRetTy, GenericArg, GenericArgs, HirId, HirIdMap, InlineAsmOperand, LetExpr, Lifetime, LifetimeName, Pat, PatField, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, Ty, TyKind, }; -use rustc_lexer::{tokenize, TokenKind}; +use rustc_lexer::{TokenKind, tokenize}; use rustc_lint::LateContext; use rustc_middle::ty::TypeckResults; -use rustc_span::{sym, BytePos, ExpnKind, MacroKind, Symbol, SyntaxContext}; +use rustc_span::{BytePos, ExpnKind, MacroKind, Symbol, SyntaxContext, sym}; use std::hash::{Hash, Hasher}; use std::ops::Range; @@ -121,9 +121,9 @@ impl HirEqInterExpr<'_, '_, '_> { // eq_pat adds the HirIds to the locals map. We therefore call it last to make sure that // these only get added if the init and type is equal. - both(&l.init, &r.init, |l, r| self.eq_expr(l, r)) - && both(&l.ty, &r.ty, |l, r| self.eq_ty(l, r)) - && both(&l.els, &r.els, |l, r| self.eq_block(l, r)) + both(l.init.as_ref(), r.init.as_ref(), |l, r| self.eq_expr(l, r)) + && both(l.ty.as_ref(), r.ty.as_ref(), |l, r| self.eq_ty(l, r)) + && both(l.els.as_ref(), r.els.as_ref(), |l, r| self.eq_block(l, r)) && self.eq_pat(l.pat, r.pat) }, (&StmtKind::Expr(l), &StmtKind::Expr(r)) | (&StmtKind::Semi(l), &StmtKind::Semi(r)) => self.eq_expr(l, r), @@ -142,7 +142,9 @@ impl HirEqInterExpr<'_, '_, '_> { if lspan.ctxt != SyntaxContext::root() && rspan.ctxt != SyntaxContext::root() { // Don't try to check in between statements inside macros. return over(left.stmts, right.stmts, |left, right| self.eq_stmt(left, right)) - && both(&left.expr, &right.expr, |left, right| self.eq_expr(left, right)); + && both(left.expr.as_ref(), right.expr.as_ref(), |left, right| { + self.eq_expr(left, right) + }); } if lspan.ctxt != rspan.ctxt { return false; @@ -285,8 +287,8 @@ impl HirEqInterExpr<'_, '_, '_> { }) }, (&ExprKind::Break(li, ref le), &ExprKind::Break(ri, ref re)) => { - both(&li.label, &ri.label, |l, r| l.ident.name == r.ident.name) - && both(le, re, |l, r| self.eq_expr(l, r)) + both(li.label.as_ref(), ri.label.as_ref(), |l, r| l.ident.name == r.ident.name) + && both(le.as_ref(), re.as_ref(), |l, r| self.eq_expr(l, r)) }, (&ExprKind::Call(l_fun, l_args), &ExprKind::Call(r_fun, r_args)) => { self.inner.allow_side_effects && self.eq_expr(l_fun, r_fun) && self.eq_exprs(l_args, r_args) @@ -297,7 +299,7 @@ impl HirEqInterExpr<'_, '_, '_> { (&ExprKind::Closure(_l), &ExprKind::Closure(_r)) => false, (&ExprKind::ConstBlock(lb), &ExprKind::ConstBlock(rb)) => self.eq_body(lb.body, rb.body), (&ExprKind::Continue(li), &ExprKind::Continue(ri)) => { - both(&li.label, &ri.label, |l, r| l.ident.name == r.ident.name) + both(li.label.as_ref(), ri.label.as_ref(), |l, r| l.ident.name == r.ident.name) }, (&ExprKind::DropTemps(le), &ExprKind::DropTemps(re)) => self.eq_expr(le, re), (&ExprKind::Field(l_f_exp, ref l_f_ident), &ExprKind::Field(r_f_exp, ref r_f_ident)) => { @@ -305,21 +307,25 @@ impl HirEqInterExpr<'_, '_, '_> { }, (&ExprKind::Index(la, li, _), &ExprKind::Index(ra, ri, _)) => self.eq_expr(la, ra) && self.eq_expr(li, ri), (&ExprKind::If(lc, lt, ref le), &ExprKind::If(rc, rt, ref re)) => { - self.eq_expr(lc, rc) && self.eq_expr(lt, rt) && both(le, re, |l, r| self.eq_expr(l, r)) + self.eq_expr(lc, rc) && self.eq_expr(lt, rt) + && both(le.as_ref(), re.as_ref(), |l, r| self.eq_expr(l, r)) }, (&ExprKind::Let(l), &ExprKind::Let(r)) => { - self.eq_pat(l.pat, r.pat) && both(&l.ty, &r.ty, |l, r| self.eq_ty(l, r)) && self.eq_expr(l.init, r.init) + self.eq_pat(l.pat, r.pat) + && both(l.ty.as_ref(), r.ty.as_ref(), |l, r| self.eq_ty(l, r)) + && self.eq_expr(l.init, r.init) }, (ExprKind::Lit(l), ExprKind::Lit(r)) => l.node == r.node, (&ExprKind::Loop(lb, ref ll, ref lls, _), &ExprKind::Loop(rb, ref rl, ref rls, _)) => { - lls == rls && self.eq_block(lb, rb) && both(ll, rl, |l, r| l.ident.name == r.ident.name) + lls == rls && self.eq_block(lb, rb) + && both(ll.as_ref(), rl.as_ref(), |l, r| l.ident.name == r.ident.name) }, (&ExprKind::Match(le, la, ref ls), &ExprKind::Match(re, ra, ref rs)) => { (ls == rs || (matches!((ls, rs), (TryDesugar(_), TryDesugar(_))))) && self.eq_expr(le, re) && over(la, ra, |l, r| { self.eq_pat(l.pat, r.pat) - && both(&l.guard, &r.guard, |l, r| self.eq_expr(l, r)) + && both(l.guard.as_ref(), r.guard.as_ref(), |l, r| self.eq_expr(l, r)) && self.eq_expr(l.body, r.body) }) }, @@ -339,10 +345,10 @@ impl HirEqInterExpr<'_, '_, '_> { (&ExprKind::Repeat(le, ll), &ExprKind::Repeat(re, rl)) => { self.eq_expr(le, re) && self.eq_array_length(ll, rl) }, - (ExprKind::Ret(l), ExprKind::Ret(r)) => both(l, r, |l, r| self.eq_expr(l, r)), + (ExprKind::Ret(l), ExprKind::Ret(r)) => both(l.as_ref(), r.as_ref(), |l, r| self.eq_expr(l, r)), (&ExprKind::Struct(l_path, lf, ref lo), &ExprKind::Struct(r_path, rf, ref ro)) => { self.eq_qpath(l_path, r_path) - && both(lo, ro, |l, r| self.eq_expr(l, r)) + && both(lo.as_ref(), ro.as_ref(), |l, r| self.eq_expr(l, r)) && over(lf, rf, |l, r| self.eq_expr_field(l, r)) }, (&ExprKind::Tup(l_tup), &ExprKind::Tup(r_tup)) => self.eq_exprs(l_tup, r_tup), @@ -450,7 +456,7 @@ impl HirEqInterExpr<'_, '_, '_> { self.eq_qpath(lp, rp) && over(la, ra, |l, r| self.eq_pat(l, r)) && ls == rs }, (&PatKind::Binding(lb, li, _, ref lp), &PatKind::Binding(rb, ri, _, ref rp)) => { - let eq = lb == rb && both(lp, rp, |l, r| self.eq_pat(l, r)); + let eq = lb == rb && both(lp.as_ref(), rp.as_ref(), |l, r| self.eq_pat(l, r)); if eq { self.locals.insert(li, ri); } @@ -460,13 +466,15 @@ impl HirEqInterExpr<'_, '_, '_> { (&PatKind::Lit(l), &PatKind::Lit(r)) => self.eq_expr(l, r), (&PatKind::Tuple(l, ls), &PatKind::Tuple(r, rs)) => ls == rs && over(l, r, |l, r| self.eq_pat(l, r)), (&PatKind::Range(ref ls, ref le, li), &PatKind::Range(ref rs, ref re, ri)) => { - both(ls, rs, |a, b| self.eq_expr(a, b)) && both(le, re, |a, b| self.eq_expr(a, b)) && (li == ri) + both(ls.as_ref(), rs.as_ref(), |a, b| self.eq_expr(a, b)) + && both(le.as_ref(), re.as_ref(), |a, b| self.eq_expr(a, b)) + && (li == ri) }, (&PatKind::Ref(le, ref lm), &PatKind::Ref(re, ref rm)) => lm == rm && self.eq_pat(le, re), (&PatKind::Slice(ls, ref li, le), &PatKind::Slice(rs, ref ri, re)) => { over(ls, rs, |l, r| self.eq_pat(l, r)) && over(le, re, |l, r| self.eq_pat(l, r)) - && both(li, ri, |l, r| self.eq_pat(l, r)) + && both(li.as_ref(), ri.as_ref(), |l, r| self.eq_pat(l, r)) }, (&PatKind::Wild, &PatKind::Wild) => true, _ => false, @@ -476,7 +484,7 @@ impl HirEqInterExpr<'_, '_, '_> { fn eq_qpath(&mut self, left: &QPath<'_>, right: &QPath<'_>) -> bool { match (left, right) { (&QPath::Resolved(ref lty, lpath), &QPath::Resolved(ref rty, rpath)) => { - both(lty, rty, |l, r| self.eq_ty(l, r)) && self.eq_path(lpath, rpath) + both(lty.as_ref(), rty.as_ref(), |l, r| self.eq_ty(l, r)) && self.eq_path(lpath, rpath) }, (&QPath::TypeRelative(lty, lseg), &QPath::TypeRelative(rty, rseg)) => { self.eq_ty(lty, rty) && self.eq_path_segment(lseg, rseg) @@ -510,7 +518,10 @@ impl HirEqInterExpr<'_, '_, '_> { pub fn eq_path_segment(&mut self, left: &PathSegment<'_>, right: &PathSegment<'_>) -> bool { // The == of idents doesn't work with different contexts, // we have to be explicit about hygiene - left.ident.name == right.ident.name && both(&left.args, &right.args, |l, r| self.eq_path_parameters(l, r)) + left.ident.name == right.ident.name + && both(left.args.as_ref(), right.args.as_ref(), |l, r| { + self.eq_path_parameters(l, r) + }) } pub fn eq_ty(&mut self, left: &Ty<'_>, right: &Ty<'_>) -> bool { @@ -649,7 +660,7 @@ fn swap_binop<'a>( /// Checks if the two `Option`s are both `None` or some equal values as per /// `eq_fn`. -pub fn both<X>(l: &Option<X>, r: &Option<X>, mut eq_fn: impl FnMut(&X, &X) -> bool) -> bool { +pub fn both<X>(l: Option<&X>, r: Option<&X>, mut eq_fn: impl FnMut(&X, &X) -> bool) -> bool { l.as_ref() .map_or_else(|| r.is_none(), |x| r.as_ref().map_or(false, |y| eq_fn(x, y))) } @@ -1115,9 +1126,8 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { } }, TyKind::Path(ref qpath) => self.hash_qpath(qpath), - TyKind::OpaqueDef(_, arg_list, in_trait) => { + TyKind::OpaqueDef(_, arg_list) => { self.hash_generic_args(arg_list); - in_trait.hash(&mut self.s); }, TyKind::TraitObject(_, lifetime, _) => { self.hash_lifetime(lifetime); @@ -1194,8 +1204,8 @@ fn eq_span_tokens( && let Some(rsrc) = right.get_source_range(cx) && let Some(rsrc) = rsrc.as_str() { - let pred = |t: &(_, _)| pred(t.0); - let map = |(_, x)| x; + let pred = |&(token, ..): &(TokenKind, _, _)| pred(token); + let map = |(_, source, _)| source; let ltok = tokenize_with_text(lsrc).filter(pred).map(map); let rtok = tokenize_with_text(rsrc).filter(pred).map(map); diff --git a/src/tools/clippy/clippy_utils/src/lib.rs b/src/tools/clippy/clippy_utils/src/lib.rs index aed0bc565d8..10e258444a6 100644 --- a/src/tools/clippy/clippy_utils/src/lib.rs +++ b/src/tools/clippy/clippy_utils/src/lib.rs @@ -1,6 +1,5 @@ #![feature(array_chunks)] #![feature(box_patterns)] -#![feature(control_flow_enum)] #![feature(f128)] #![feature(f16)] #![feature(if_let_guard)] @@ -78,7 +77,7 @@ pub mod visitors; pub use self::attrs::*; pub use self::check_proc_macro::{is_from_proc_macro, is_span_if, is_span_match}; pub use self::hir_utils::{ - both, count_eq, eq_expr_value, hash_expr, hash_stmt, is_bool, over, HirEqInterExpr, SpanlessEq, SpanlessHash, + HirEqInterExpr, SpanlessEq, SpanlessHash, both, count_eq, eq_expr_value, hash_expr, hash_stmt, is_bool, over, }; use core::mem; @@ -94,20 +93,20 @@ use rustc_ast::ast::{self, LitKind, RangeLimits}; use rustc_data_structures::fx::FxHashMap; use rustc_data_structures::packed::Pu128; use rustc_data_structures::unhash::UnhashMap; +use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk}; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LocalDefId, LocalModDefId, LOCAL_CRATE}; +use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LOCAL_CRATE, LocalDefId, LocalModDefId}; use rustc_hir::definitions::{DefPath, DefPathData}; use rustc_hir::hir_id::{HirIdMap, HirIdSet}; -use rustc_hir::intravisit::{walk_expr, FnKind, Visitor}; -use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk}; +use rustc_hir::intravisit::{FnKind, Visitor, walk_expr}; use rustc_hir::{ - self as hir, def, Arm, ArrayLen, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, ConstArgKind, - ConstContext, Destination, Expr, ExprField, ExprKind, FnDecl, FnRetTy, GenericArgs, HirId, Impl, ImplItem, - ImplItemKind, ImplItemRef, Item, ItemKind, LangItem, LetStmt, MatchSource, Mutability, Node, OwnerId, OwnerNode, - Param, Pat, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitItem, TraitItemKind, TraitItemRef, - TraitRef, TyKind, UnOp, + self as hir, Arm, ArrayLen, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, ConstArgKind, ConstContext, + Destination, Expr, ExprField, ExprKind, FnDecl, FnRetTy, GenericArgs, HirId, Impl, ImplItem, ImplItemKind, + ImplItemRef, Item, ItemKind, LangItem, LetStmt, MatchSource, Mutability, Node, OwnerId, OwnerNode, Param, Pat, + PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitItem, TraitItemKind, TraitItemRef, TraitRef, + TyKind, UnOp, def, }; -use rustc_lexer::{tokenize, TokenKind}; +use rustc_lexer::{TokenKind, tokenize}; use rustc_lint::{LateContext, Level, Lint, LintContext}; use rustc_middle::hir::place::PlaceBase; use rustc_middle::mir::Const; @@ -120,12 +119,12 @@ use rustc_middle::ty::{ }; use rustc_span::hygiene::{ExpnKind, MacroKind}; use rustc_span::source_map::SourceMap; -use rustc_span::symbol::{kw, Ident, Symbol}; -use rustc_span::{sym, Span}; +use rustc_span::symbol::{Ident, Symbol, kw}; +use rustc_span::{InnerSpan, Span, sym}; use rustc_target::abi::Integer; use visitors::Visitable; -use crate::consts::{mir_to_const, ConstEvalCtxt, Constant}; +use crate::consts::{ConstEvalCtxt, Constant, mir_to_const}; use crate::higher::Range; use crate::ty::{adt_and_variant_of_res, can_partially_move_ty, expr_sig, is_copy, is_recursively_primitive_type}; use crate::visitors::for_each_expr_without_closures; @@ -263,9 +262,13 @@ pub fn is_res_lang_ctor(cx: &LateContext<'_>, res: Res, lang_item: LangItem) -> } } - /// Checks if `{ctor_call_id}(...)` is `{enum_item}::{variant_name}(...)`. -pub fn is_enum_variant_ctor(cx: &LateContext<'_>, enum_item: Symbol, variant_name: Symbol, ctor_call_id: DefId) -> bool { +pub fn is_enum_variant_ctor( + cx: &LateContext<'_>, + enum_item: Symbol, + variant_name: Symbol, + ctor_call_id: DefId, +) -> bool { let Some(enum_def_id) = cx.tcx.get_diagnostic_item(enum_item) else { return false; }; @@ -593,7 +596,7 @@ fn find_primitive_impls<'tcx>(tcx: TyCtxt<'tcx>, name: &str) -> impl Iterator<It }, }; - tcx.incoherent_impls(ty).into_iter().copied() + tcx.incoherent_impls(ty).iter().copied() } fn non_local_item_children_by_name(tcx: TyCtxt<'_>, def_id: DefId, name: Symbol) -> Vec<Res> { @@ -664,6 +667,17 @@ fn item_children_by_name(tcx: TyCtxt<'_>, def_id: DefId, name: Symbol) -> Vec<Re } } +/// Finds the crates called `name`, may be multiple due to multiple major versions. +pub fn find_crates(tcx: TyCtxt<'_>, name: Symbol) -> Vec<Res> { + tcx.crates(()) + .iter() + .copied() + .filter(move |&num| tcx.crate_name(num) == name) + .map(CrateNum::as_def_id) + .map(|id| Res::Def(tcx.def_kind(id), id)) + .collect() +} + /// Resolves a def path like `std::vec::Vec`. /// /// Can return multiple resolutions when there are multiple versions of the same crate, e.g. @@ -674,15 +688,7 @@ fn item_children_by_name(tcx: TyCtxt<'_>, def_id: DefId, name: Symbol) -> Vec<Re /// /// This function is expensive and should be used sparingly. pub fn def_path_res(tcx: TyCtxt<'_>, path: &[&str]) -> Vec<Res> { - fn find_crates(tcx: TyCtxt<'_>, name: Symbol) -> impl Iterator<Item = DefId> + '_ { - tcx.crates(()) - .iter() - .copied() - .filter(move |&num| tcx.crate_name(num) == name) - .map(CrateNum::as_def_id) - } - - let (base, mut path) = match *path { + let (base, path) = match *path { [primitive] => { return vec![PrimTy::from_name(Symbol::intern(primitive)).map_or(Res::Err, Res::PrimTy)]; }, @@ -698,18 +704,25 @@ pub fn def_path_res(tcx: TyCtxt<'_>, path: &[&str]) -> Vec<Res> { None }; - let starts = find_primitive_impls(tcx, base) - .chain(find_crates(tcx, base_sym)) + let crates = find_primitive_impls(tcx, base) .chain(local_crate) - .map(|id| Res::Def(tcx.def_kind(id), id)); + .map(|id| Res::Def(tcx.def_kind(id), id)) + .chain(find_crates(tcx, base_sym)) + .collect(); - let mut resolutions: Vec<Res> = starts.collect(); + def_path_res_with_base(tcx, crates, path) +} +/// Resolves a def path like `vec::Vec` with the base `std`. +/// +/// This is lighter than [`def_path_res`], and should be called with [`find_crates`] looking up +/// items from the same crate repeatedly, although should still be used sparingly. +pub fn def_path_res_with_base(tcx: TyCtxt<'_>, mut base: Vec<Res>, mut path: &[&str]) -> Vec<Res> { while let [segment, rest @ ..] = path { path = rest; let segment = Symbol::intern(segment); - resolutions = resolutions + base = base .into_iter() .filter_map(|res| res.opt_def_id()) .flat_map(|def_id| { @@ -717,7 +730,7 @@ pub fn def_path_res(tcx: TyCtxt<'_>, path: &[&str]) -> Vec<Res> { // `impl S { ... }` let inherent_impl_children = tcx .inherent_impls(def_id) - .into_iter() + .iter() .flat_map(|&impl_def_id| item_children_by_name(tcx, impl_def_id, segment)); let direct_children = item_children_by_name(tcx, def_id, segment); @@ -727,7 +740,7 @@ pub fn def_path_res(tcx: TyCtxt<'_>, path: &[&str]) -> Vec<Res> { .collect(); } - resolutions + base } /// Resolves a def path like `std::vec::Vec` to its [`DefId`]s, see [`def_path_res`]. @@ -1327,7 +1340,7 @@ pub struct ContainsName<'a, 'tcx> { pub result: bool, } -impl<'a, 'tcx> Visitor<'tcx> for ContainsName<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for ContainsName<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_name(&mut self, name: Symbol) { @@ -2940,13 +2953,14 @@ pub fn expr_use_ctxt<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'tcx>) -> ExprU } /// Tokenizes the input while keeping the text associated with each token. -pub fn tokenize_with_text(s: &str) -> impl Iterator<Item = (TokenKind, &str)> { +pub fn tokenize_with_text(s: &str) -> impl Iterator<Item = (TokenKind, &str, InnerSpan)> { let mut pos = 0; tokenize(s).map(move |t| { let end = pos + t.len; let range = pos as usize..end as usize; + let inner = InnerSpan::new(range.start, range.end); pos = end; - (t.kind, s.get(range).unwrap_or_default()) + (t.kind, s.get(range).unwrap_or_default(), inner) }) } @@ -2970,8 +2984,8 @@ pub fn span_contains_comment(sm: &SourceMap, span: Span) -> bool { pub fn span_extract_comment(sm: &SourceMap, span: Span) -> String { let snippet = sm.span_to_snippet(span).unwrap_or_default(); let res = tokenize_with_text(&snippet) - .filter(|(t, _)| matches!(t, TokenKind::BlockComment { .. } | TokenKind::LineComment { .. })) - .map(|(_, s)| s) + .filter(|(t, ..)| matches!(t, TokenKind::BlockComment { .. } | TokenKind::LineComment { .. })) + .map(|(_, s, _)| s) .join("\n"); res } @@ -2991,7 +3005,7 @@ pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span { /// pat: Some(a) /// else_body: return None /// ``` - +/// /// And for this example: /// ```ignore /// let Some(FooBar { a, b }) = ex else { return None }; @@ -3001,7 +3015,7 @@ pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span { /// pat: Some(FooBar { a, b }) /// else_body: return None /// ``` - +/// /// We output `Some(a)` in the first instance, and `Some(FooBar { a, b })` in the second, because /// the question mark operator is applicable here. Callers have to check whether we are in a /// constant or not. @@ -3096,7 +3110,7 @@ pub fn is_never_expr<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> Option< is_never: bool, } - impl<'tcx> V<'_, 'tcx> { + impl V<'_, '_> { fn push_break_target(&mut self, id: HirId) { self.break_targets.push(BreakTarget { id, unused: true }); self.break_targets_for_result_ty += u32::from(self.in_final_expr); diff --git a/src/tools/clippy/clippy_utils/src/macros.rs b/src/tools/clippy/clippy_utils/src/macros.rs index 1d7479bff82..9c4d19ac1f1 100644 --- a/src/tools/clippy/clippy_utils/src/macros.rs +++ b/src/tools/clippy/clippy_utils/src/macros.rs @@ -1,6 +1,6 @@ #![allow(clippy::similar_names)] // `expr` and `expn` -use crate::visitors::{for_each_expr_without_closures, Descend}; +use crate::visitors::{Descend, for_each_expr_without_closures}; use arrayvec::ArrayVec; use rustc_ast::{FormatArgs, FormatArgument, FormatPlaceholder}; @@ -10,7 +10,7 @@ use rustc_hir::{self as hir, Expr, ExprKind, HirId, Node, QPath}; use rustc_lint::LateContext; use rustc_span::def_id::DefId; use rustc_span::hygiene::{self, MacroKind, SyntaxContext}; -use rustc_span::{sym, BytePos, ExpnData, ExpnId, ExpnKind, Span, SpanData, Symbol}; +use rustc_span::{BytePos, ExpnData, ExpnId, ExpnKind, Span, SpanData, Symbol, sym}; use std::ops::ControlFlow; const FORMAT_MACRO_DIAG_ITEMS: &[Symbol] = &[ diff --git a/src/tools/clippy/clippy_utils/src/mir/mod.rs b/src/tools/clippy/clippy_utils/src/mir/mod.rs index 654fb564848..3924e384c37 100644 --- a/src/tools/clippy/clippy_utils/src/mir/mod.rs +++ b/src/tools/clippy/clippy_utils/src/mir/mod.rs @@ -2,7 +2,7 @@ use rustc_hir::{Expr, HirId}; use rustc_index::bit_set::BitSet; use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceContext, Visitor}; use rustc_middle::mir::{ - traversal, BasicBlock, Body, InlineAsmOperand, Local, Location, Place, StatementKind, TerminatorKind, START_BLOCK, + BasicBlock, Body, InlineAsmOperand, Local, Location, Place, START_BLOCK, StatementKind, TerminatorKind, traversal, }; use rustc_middle::ty::TyCtxt; @@ -58,7 +58,7 @@ struct V<'a> { results: Vec<LocalUsage>, } -impl<'a, 'tcx> Visitor<'tcx> for V<'a> { +impl<'tcx> Visitor<'tcx> for V<'_> { fn visit_place(&mut self, place: &Place<'tcx>, ctx: PlaceContext, loc: Location) { if loc.block == self.location.block && loc.statement_index <= self.location.statement_index { return; @@ -112,14 +112,10 @@ pub fn block_in_cycle(body: &Body<'_>, block: BasicBlock) -> bool { /// Convenience wrapper around `visit_local_usage`. pub fn used_exactly_once(mir: &Body<'_>, local: Local) -> Option<bool> { - visit_local_usage( - &[local], - mir, - Location { - block: START_BLOCK, - statement_index: 0, - }, - ) + visit_local_usage(&[local], mir, Location { + block: START_BLOCK, + statement_index: 0, + }) .map(|mut vec| { let LocalUsage { local_use_locs, .. } = vec.remove(0); let mut locations = local_use_locs diff --git a/src/tools/clippy/clippy_utils/src/mir/possible_borrower.rs b/src/tools/clippy/clippy_utils/src/mir/possible_borrower.rs index 07e6705cd3d..6bb434a466f 100644 --- a/src/tools/clippy/clippy_utils/src/mir/possible_borrower.rs +++ b/src/tools/clippy/clippy_utils/src/mir/possible_borrower.rs @@ -65,7 +65,7 @@ impl<'a, 'b, 'tcx> PossibleBorrowerVisitor<'a, 'b, 'tcx> { } } -impl<'a, 'b, 'tcx> mir::visit::Visitor<'tcx> for PossibleBorrowerVisitor<'a, 'b, 'tcx> { +impl<'tcx> mir::visit::Visitor<'tcx> for PossibleBorrowerVisitor<'_, '_, 'tcx> { fn visit_assign(&mut self, place: &mir::Place<'tcx>, rvalue: &mir::Rvalue<'_>, _location: mir::Location) { let lhs = place.local; match rvalue { @@ -177,8 +177,8 @@ pub struct PossibleBorrowerMap<'b, 'tcx> { pub bitset: (BitSet<mir::Local>, BitSet<mir::Local>), } -impl<'a, 'b, 'tcx> PossibleBorrowerMap<'b, 'tcx> { - pub fn new(cx: &'a LateContext<'tcx>, mir: &'b mir::Body<'tcx>) -> Self { +impl<'b, 'tcx> PossibleBorrowerMap<'b, 'tcx> { + pub fn new(cx: &LateContext<'tcx>, mir: &'b mir::Body<'tcx>) -> Self { let possible_origin = { let mut vis = PossibleOriginVisitor::new(mir); vis.visit_body(mir); diff --git a/src/tools/clippy/clippy_utils/src/mir/possible_origin.rs b/src/tools/clippy/clippy_utils/src/mir/possible_origin.rs index da04266863f..4157b3f4930 100644 --- a/src/tools/clippy/clippy_utils/src/mir/possible_origin.rs +++ b/src/tools/clippy/clippy_utils/src/mir/possible_origin.rs @@ -39,7 +39,7 @@ impl<'a, 'tcx> PossibleOriginVisitor<'a, 'tcx> { } } -impl<'a, 'tcx> mir::visit::Visitor<'tcx> for PossibleOriginVisitor<'a, 'tcx> { +impl<'tcx> mir::visit::Visitor<'tcx> for PossibleOriginVisitor<'_, 'tcx> { fn visit_assign(&mut self, place: &mir::Place<'tcx>, rvalue: &mir::Rvalue<'_>, _location: mir::Location) { let lhs = place.local; match rvalue { diff --git a/src/tools/clippy/clippy_utils/src/paths.rs b/src/tools/clippy/clippy_utils/src/paths.rs index a30edc48fff..11a98b02f33 100644 --- a/src/tools/clippy/clippy_utils/src/paths.rs +++ b/src/tools/clippy/clippy_utils/src/paths.rs @@ -29,7 +29,11 @@ pub const SYM_MODULE: [&str; 3] = ["rustc_span", "symbol", "sym"]; pub const SYNTAX_CONTEXT: [&str; 3] = ["rustc_span", "hygiene", "SyntaxContext"]; // Paths in `core`/`alloc`/`std`. This should be avoided and cleaned up by adding diagnostic items. -// ... none currently! +pub const ABORT: [&str; 3] = ["std", "process", "abort"]; +pub const CHILD: [&str; 3] = ["std", "process", "Child"]; +pub const CHILD_ID: [&str; 4] = ["std", "process", "Child", "id"]; +pub const CHILD_KILL: [&str; 4] = ["std", "process", "Child", "kill"]; +pub const PANIC_ANY: [&str; 3] = ["std", "panic", "panic_any"]; // Paths in clippy itself pub const MSRV: [&str; 3] = ["clippy_config", "msrvs", "Msrv"]; diff --git a/src/tools/clippy/clippy_utils/src/ptr.rs b/src/tools/clippy/clippy_utils/src/ptr.rs index 991ea428dc3..273c1b0defa 100644 --- a/src/tools/clippy/clippy_utils/src/ptr.rs +++ b/src/tools/clippy/clippy_utils/src/ptr.rs @@ -1,5 +1,5 @@ use crate::source::snippet; -use crate::visitors::{for_each_expr_without_closures, Descend}; +use crate::visitors::{Descend, for_each_expr_without_closures}; use crate::{path_to_local_id, strip_pat_refs}; use core::ops::ControlFlow; use rustc_hir::{Body, BodyId, ExprKind, HirId, PatKind}; diff --git a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs index ce1895b7fb1..5f12b6bf99e 100644 --- a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs +++ b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs @@ -18,8 +18,8 @@ use rustc_middle::mir::{ use rustc_middle::traits::{BuiltinImplSource, ImplSource, ObligationCause}; use rustc_middle::ty::adjustment::PointerCoercion; use rustc_middle::ty::{self, GenericArgKind, TraitRef, Ty, TyCtxt}; -use rustc_span::symbol::sym; use rustc_span::Span; +use rustc_span::symbol::sym; use rustc_trait_selection::traits::{ObligationCtxt, SelectionContext}; use std::borrow::Cow; @@ -131,7 +131,8 @@ fn check_rvalue<'tcx>( CastKind::PointerCoercion( PointerCoercion::UnsafeFnPointer | PointerCoercion::ClosureFnPointer(_) - | PointerCoercion::ReifyFnPointer, _ + | PointerCoercion::ReifyFnPointer, + _, ), _, _, diff --git a/src/tools/clippy/clippy_utils/src/source.rs b/src/tools/clippy/clippy_utils/src/source.rs index 482e1e0147b..eecbfb3936a 100644 --- a/src/tools/clippy/clippy_utils/src/source.rs +++ b/src/tools/clippy/clippy_utils/src/source.rs @@ -9,10 +9,10 @@ use rustc_hir::{BlockCheckMode, Expr, ExprKind, UnsafeSource}; use rustc_lint::{EarlyContext, LateContext}; use rustc_middle::ty::TyCtxt; use rustc_session::Session; -use rustc_span::source_map::{original_sp, SourceMap}; +use rustc_span::source_map::{SourceMap, original_sp}; use rustc_span::{ - hygiene, BytePos, FileNameDisplayPreference, Pos, SourceFile, SourceFileAndLine, Span, SpanData, SyntaxContext, - DUMMY_SP, + BytePos, DUMMY_SP, FileNameDisplayPreference, Pos, SourceFile, SourceFileAndLine, Span, SpanData, SyntaxContext, + hygiene, }; use std::borrow::Cow; use std::fmt; @@ -287,6 +287,7 @@ impl SourceFileRange { self.sf .src .as_ref() + .map(|src| src.as_str()) .or_else(|| self.sf.external_src.get().and_then(|src| src.get_source())) .and_then(|x| x.get(self.range.clone())) } @@ -666,39 +667,6 @@ pub fn walk_span_to_context(span: Span, outer: SyntaxContext) -> Option<Span> { (outer_span.ctxt() == outer).then_some(outer_span) } -/// Removes block comments from the given `Vec` of lines. -/// -/// # Examples -/// -/// ```rust,ignore -/// without_block_comments(vec!["/*", "foo", "*/"]); -/// // => vec![] -/// -/// without_block_comments(vec!["bar", "/*", "foo", "*/"]); -/// // => vec!["bar"] -/// ``` -pub fn without_block_comments(lines: Vec<&str>) -> Vec<&str> { - let mut without = vec![]; - - let mut nest_level = 0; - - for line in lines { - if line.contains("/*") { - nest_level += 1; - continue; - } else if line.contains("*/") { - nest_level -= 1; - continue; - } - - if nest_level == 0 { - without.push(line); - } - } - - without -} - /// Trims the whitespace from the start and the end of the span. pub fn trim_span(sm: &SourceMap, span: Span) -> Span { let data = span.data(); @@ -758,15 +726,12 @@ pub fn str_literal_to_char_literal( &snip[1..(snip.len() - 1)] }; - let hint = format!( - "'{}'", - match ch { - "'" => "\\'", - r"\" => "\\\\", - "\\\"" => "\"", // no need to escape `"` in `'"'` - _ => ch, - } - ); + let hint = format!("'{}'", match ch { + "'" => "\\'", + r"\" => "\\\\", + "\\\"" => "\"", // no need to escape `"` in `'"'` + _ => ch, + }); Some(hint) } else { @@ -776,7 +741,7 @@ pub fn str_literal_to_char_literal( #[cfg(test)] mod test { - use super::{reindent_multiline, without_block_comments}; + use super::reindent_multiline; #[test] fn test_reindent_multiline_single_line() { @@ -844,29 +809,4 @@ mod test { z }".into(), true, Some(8))); } - - #[test] - fn test_without_block_comments_lines_without_block_comments() { - let result = without_block_comments(vec!["/*", "", "*/"]); - println!("result: {result:?}"); - assert!(result.is_empty()); - - let result = without_block_comments(vec!["", "/*", "", "*/", "#[crate_type = \"lib\"]", "/*", "", "*/", ""]); - assert_eq!(result, vec!["", "#[crate_type = \"lib\"]", ""]); - - let result = without_block_comments(vec!["/* rust", "", "*/"]); - assert!(result.is_empty()); - - let result = without_block_comments(vec!["/* one-line comment */"]); - assert!(result.is_empty()); - - let result = without_block_comments(vec!["/* nested", "/* multi-line", "comment", "*/", "test", "*/"]); - assert!(result.is_empty()); - - let result = without_block_comments(vec!["/* nested /* inline /* comment */ test */ */"]); - assert!(result.is_empty()); - - let result = without_block_comments(vec!["foo", "bar", "baz"]); - assert_eq!(result, vec!["foo", "bar", "baz"]); - } } diff --git a/src/tools/clippy/clippy_utils/src/str_utils.rs b/src/tools/clippy/clippy_utils/src/str_utils.rs index 421b25a77fe..1588ee452da 100644 --- a/src/tools/clippy/clippy_utils/src/str_utils.rs +++ b/src/tools/clippy/clippy_utils/src/str_utils.rs @@ -370,9 +370,11 @@ mod test { assert_eq!(camel_case_split("AbcDef"), vec!["Abc", "Def"]); assert_eq!(camel_case_split("Abc"), vec!["Abc"]); assert_eq!(camel_case_split("abcDef"), vec!["abc", "Def"]); - assert_eq!( - camel_case_split("\u{f6}\u{f6}AabABcd"), - vec!["\u{f6}\u{f6}", "Aab", "A", "Bcd"] - ); + assert_eq!(camel_case_split("\u{f6}\u{f6}AabABcd"), vec![ + "\u{f6}\u{f6}", + "Aab", + "A", + "Bcd" + ]); } } diff --git a/src/tools/clippy/clippy_utils/src/sugg.rs b/src/tools/clippy/clippy_utils/src/sugg.rs index 0f86d89c980..3255c51d009 100644 --- a/src/tools/clippy/clippy_utils/src/sugg.rs +++ b/src/tools/clippy/clippy_utils/src/sugg.rs @@ -180,8 +180,10 @@ impl<'a> Sugg<'a> { ) -> Self { use rustc_ast::ast::RangeLimits; + let mut snippet = |span: Span| snippet_with_context(cx, span, ctxt, default, app).0; + match expr.kind { - _ if expr.span.ctxt() != ctxt => Sugg::NonParen(snippet_with_context(cx, expr.span, ctxt, default, app).0), + _ if expr.span.ctxt() != ctxt => Sugg::NonParen(snippet(expr.span)), ast::ExprKind::AddrOf(..) | ast::ExprKind::Closure { .. } | ast::ExprKind::If(..) @@ -224,46 +226,38 @@ impl<'a> Sugg<'a> { | ast::ExprKind::While(..) | ast::ExprKind::Await(..) | ast::ExprKind::Err(_) - | ast::ExprKind::Dummy => Sugg::NonParen(snippet_with_context(cx, expr.span, ctxt, default, app).0), + | ast::ExprKind::Dummy => Sugg::NonParen(snippet(expr.span)), ast::ExprKind::Range(ref lhs, ref rhs, RangeLimits::HalfOpen) => Sugg::BinOp( AssocOp::DotDot, - lhs.as_ref().map_or("".into(), |lhs| { - snippet_with_context(cx, lhs.span, ctxt, default, app).0 - }), - rhs.as_ref().map_or("".into(), |rhs| { - snippet_with_context(cx, rhs.span, ctxt, default, app).0 - }), + lhs.as_ref().map_or("".into(), |lhs| snippet(lhs.span)), + rhs.as_ref().map_or("".into(), |rhs| snippet(rhs.span)), ), ast::ExprKind::Range(ref lhs, ref rhs, RangeLimits::Closed) => Sugg::BinOp( AssocOp::DotDotEq, - lhs.as_ref().map_or("".into(), |lhs| { - snippet_with_context(cx, lhs.span, ctxt, default, app).0 - }), - rhs.as_ref().map_or("".into(), |rhs| { - snippet_with_context(cx, rhs.span, ctxt, default, app).0 - }), + lhs.as_ref().map_or("".into(), |lhs| snippet(lhs.span)), + rhs.as_ref().map_or("".into(), |rhs| snippet(rhs.span)), ), ast::ExprKind::Assign(ref lhs, ref rhs, _) => Sugg::BinOp( AssocOp::Assign, - snippet_with_context(cx, lhs.span, ctxt, default, app).0, - snippet_with_context(cx, rhs.span, ctxt, default, app).0, + snippet(lhs.span), + snippet(rhs.span), ), ast::ExprKind::AssignOp(op, ref lhs, ref rhs) => Sugg::BinOp( astbinop2assignop(op), - snippet_with_context(cx, lhs.span, ctxt, default, app).0, - snippet_with_context(cx, rhs.span, ctxt, default, app).0, + snippet(lhs.span), + snippet(rhs.span), ), ast::ExprKind::Binary(op, ref lhs, ref rhs) => Sugg::BinOp( AssocOp::from_ast_binop(op.node), - snippet_with_context(cx, lhs.span, ctxt, default, app).0, - snippet_with_context(cx, rhs.span, ctxt, default, app).0, + snippet(lhs.span), + snippet(rhs.span), ), ast::ExprKind::Cast(ref lhs, ref ty) | //FIXME(chenyukang), remove this after type ascription is removed from AST ast::ExprKind::Type(ref lhs, ref ty) => Sugg::BinOp( AssocOp::As, - snippet_with_context(cx, lhs.span, ctxt, default, app).0, - snippet_with_context(cx, ty.span, ctxt, default, app).0, + snippet(lhs.span), + snippet(ty.span), ), } } diff --git a/src/tools/clippy/clippy_utils/src/ty.rs b/src/tools/clippy/clippy_utils/src/ty.rs index 22aaaa1b734..21c2b19f4bd 100644 --- a/src/tools/clippy/clippy_utils/src/ty.rs +++ b/src/tools/clippy/clippy_utils/src/ty.rs @@ -12,8 +12,8 @@ use rustc_hir::def_id::DefId; use rustc_hir::{Expr, FnDecl, LangItem, Safety, TyKind}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::LateContext; -use rustc_middle::mir::interpret::Scalar; use rustc_middle::mir::ConstValue; +use rustc_middle::mir::interpret::Scalar; use rustc_middle::traits::EvaluationResult; use rustc_middle::ty::layout::ValidityRequirement; use rustc_middle::ty::{ @@ -22,7 +22,7 @@ use rustc_middle::ty::{ TypeVisitable, TypeVisitableExt, TypeVisitor, UintTy, Upcast, VariantDef, VariantDiscr, }; use rustc_span::symbol::Ident; -use rustc_span::{sym, Span, Symbol, DUMMY_SP}; +use rustc_span::{DUMMY_SP, Span, Symbol, sym}; use rustc_target::abi::VariantIdx; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt; @@ -606,10 +606,13 @@ fn is_uninit_value_valid_for_ty_fallback<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'t ty::Tuple(types) => types.iter().all(|ty| is_uninit_value_valid_for_ty(cx, ty)), // Unions are always fine right now. // This includes MaybeUninit, the main way people use uninitialized memory. - // For ADTs, we could look at all fields just like for tuples, but that's potentially - // exponential, so let's avoid doing that for now. Code doing that is sketchy enough to - // just use an `#[allow()]`. - ty::Adt(adt, _) => adt.is_union(), + ty::Adt(adt, _) if adt.is_union() => true, + // Types (e.g. `UnsafeCell<MaybeUninit<T>>`) that recursively contain only types that can be uninit + // can themselves be uninit too. + // This purposefully ignores enums as they may have a discriminant that can't be uninit. + ty::Adt(adt, args) if adt.is_struct() => adt + .all_fields() + .all(|field| is_uninit_value_valid_for_ty(cx, field.ty(cx.tcx, args))), // For the rest, conservatively assume that they cannot be uninit. _ => false, } @@ -1316,7 +1319,7 @@ pub fn deref_chain<'cx, 'tcx>(cx: &'cx LateContext<'tcx>, ty: Ty<'tcx>) -> impl /// If you need this, you should wrap this call in `clippy_utils::ty::deref_chain().any(...)`. pub fn get_adt_inherent_method<'a>(cx: &'a LateContext<'_>, ty: Ty<'_>, method_name: Symbol) -> Option<&'a AssocItem> { if let Some(ty_did) = ty.ty_adt_def().map(AdtDef::did) { - cx.tcx.inherent_impls(ty_did).into_iter().find_map(|&did| { + cx.tcx.inherent_impls(ty_did).iter().find_map(|&did| { cx.tcx .associated_items(did) .filter_by_name_unhygienic(method_name) diff --git a/src/tools/clippy/clippy_utils/src/ty/type_certainty/mod.rs b/src/tools/clippy/clippy_utils/src/ty/type_certainty/mod.rs index 875ddec259e..91ec120adbf 100644 --- a/src/tools/clippy/clippy_utils/src/ty/type_certainty/mod.rs +++ b/src/tools/clippy/clippy_utils/src/ty/type_certainty/mod.rs @@ -14,14 +14,14 @@ use crate::def_path_res; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; -use rustc_hir::intravisit::{walk_qpath, walk_ty, Visitor}; +use rustc_hir::intravisit::{Visitor, walk_qpath, walk_ty}; use rustc_hir::{self as hir, Expr, ExprKind, GenericArgs, HirId, Node, PathSegment, QPath, TyKind}; use rustc_lint::LateContext; use rustc_middle::ty::{self, AdtDef, GenericArgKind, Ty}; use rustc_span::{Span, Symbol}; mod certainty; -use certainty::{join, meet, Certainty, Meet}; +use certainty::{Certainty, Meet, join, meet}; pub fn expr_type_is_certain(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { expr_type_certainty(cx, expr).is_certain() @@ -108,7 +108,7 @@ impl<'cx, 'tcx> CertaintyVisitor<'cx, 'tcx> { } } -impl<'cx, 'tcx> Visitor<'cx> for CertaintyVisitor<'cx, 'tcx> { +impl<'cx> Visitor<'cx> for CertaintyVisitor<'cx, '_> { fn visit_qpath(&mut self, qpath: &'cx QPath<'_>, hir_id: HirId, _: Span) { self.certainty = self.certainty.meet(qpath_certainty(self.cx, qpath, true)); if self.certainty != Certainty::Uncertain { diff --git a/src/tools/clippy/clippy_utils/src/usage.rs b/src/tools/clippy/clippy_utils/src/usage.rs index fbf3d95365a..8af3bdccaa1 100644 --- a/src/tools/clippy/clippy_utils/src/usage.rs +++ b/src/tools/clippy/clippy_utils/src/usage.rs @@ -1,4 +1,4 @@ -use crate::visitors::{for_each_expr, for_each_expr_without_closures, Descend, Visitable}; +use crate::visitors::{Descend, Visitable, for_each_expr, for_each_expr_without_closures}; use crate::{self as utils, get_enclosing_loop_or_multi_call_closure}; use core::ops::ControlFlow; use hir::def::Res; @@ -46,8 +46,8 @@ struct MutVarsDelegate { skip: bool, } -impl<'tcx> MutVarsDelegate { - fn update(&mut self, cat: &PlaceWithHirId<'tcx>) { +impl MutVarsDelegate { + fn update(&mut self, cat: &PlaceWithHirId<'_>) { match cat.place.base { PlaceBase::Local(id) => { self.used_mutably.insert(id); @@ -122,7 +122,7 @@ impl<'a, 'tcx> BindingUsageFinder<'a, 'tcx> { finder.usage_found } } -impl<'a, 'tcx> Visitor<'tcx> for BindingUsageFinder<'a, 'tcx> { +impl<'tcx> Visitor<'tcx> for BindingUsageFinder<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_expr(&mut self, expr: &'tcx Expr<'tcx>) { diff --git a/src/tools/clippy/clippy_utils/src/visitors.rs b/src/tools/clippy/clippy_utils/src/visitors.rs index e5b6d3965e9..02931306f16 100644 --- a/src/tools/clippy/clippy_utils/src/visitors.rs +++ b/src/tools/clippy/clippy_utils/src/visitors.rs @@ -1,10 +1,10 @@ use crate::ty::needs_ordered_drop; use crate::{get_enclosing_block, path_to_local_id}; use core::ops::ControlFlow; -use rustc_ast::visit::{try_visit, VisitorResult}; +use rustc_ast::visit::{VisitorResult, try_visit}; use rustc_hir as hir; use rustc_hir::def::{CtorKind, DefKind, Res}; -use rustc_hir::intravisit::{self, walk_block, walk_expr, Visitor}; +use rustc_hir::intravisit::{self, Visitor, walk_block, walk_expr}; use rustc_hir::{ AnonConst, Arm, Block, BlockCheckMode, Body, BodyId, Expr, ExprKind, HirId, ItemId, ItemKind, LetExpr, Pat, QPath, Safety, Stmt, UnOp, UnsafeSource, @@ -552,7 +552,7 @@ pub fn for_each_local_use_after_expr<'tcx, B>( res: ControlFlow<B>, f: F, } - impl<'cx, 'tcx, F: FnMut(&'tcx Expr<'tcx>) -> ControlFlow<B>, B> Visitor<'tcx> for V<'cx, 'tcx, F, B> { + impl<'tcx, F: FnMut(&'tcx Expr<'tcx>) -> ControlFlow<B>, B> Visitor<'tcx> for V<'_, 'tcx, F, B> { type NestedFilter = nested_filter::OnlyBodies; fn nested_visit_map(&mut self) -> Self::Map { self.cx.tcx.hir() @@ -734,7 +734,7 @@ pub fn for_each_local_assignment<'tcx, B>( res: ControlFlow<B>, f: F, } - impl<'cx, 'tcx, F: FnMut(&'tcx Expr<'tcx>) -> ControlFlow<B>, B> Visitor<'tcx> for V<'cx, 'tcx, F, B> { + impl<'tcx, F: FnMut(&'tcx Expr<'tcx>) -> ControlFlow<B>, B> Visitor<'tcx> for V<'_, 'tcx, F, B> { type NestedFilter = nested_filter::OnlyBodies; fn nested_visit_map(&mut self) -> Self::Map { self.cx.tcx.hir() diff --git a/src/tools/clippy/declare_clippy_lint/Cargo.toml b/src/tools/clippy/declare_clippy_lint/Cargo.toml index 31270241b0b..67a1f7cc72c 100644 --- a/src/tools/clippy/declare_clippy_lint/Cargo.toml +++ b/src/tools/clippy/declare_clippy_lint/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "declare_clippy_lint" -version = "0.1.82" +version = "0.1.83" edition = "2021" publish = false diff --git a/src/tools/clippy/declare_clippy_lint/src/lib.rs b/src/tools/clippy/declare_clippy_lint/src/lib.rs index 6aa24329b06..fefc1a0a6c4 100644 --- a/src/tools/clippy/declare_clippy_lint/src/lib.rs +++ b/src/tools/clippy/declare_clippy_lint/src/lib.rs @@ -5,7 +5,7 @@ use proc_macro::TokenStream; use quote::{format_ident, quote}; use syn::parse::{Parse, ParseStream}; -use syn::{parse_macro_input, Attribute, Error, Expr, ExprLit, Ident, Lit, LitStr, Meta, Result, Token}; +use syn::{Attribute, Error, Expr, ExprLit, Ident, Lit, LitStr, Meta, Result, Token, parse_macro_input}; fn parse_attr<const LEN: usize>(path: [&'static str; LEN], attr: &Attribute) -> Option<LitStr> { if let Meta::NameValue(name_value) = &attr.meta { @@ -140,15 +140,12 @@ pub fn declare_clippy_lint(input: TokenStream) -> TokenStream { let mut category = category.to_string(); - let level = format_ident!( - "{}", - match category.as_str() { - "correctness" => "Deny", - "style" | "suspicious" | "complexity" | "perf" => "Warn", - "pedantic" | "restriction" | "cargo" | "nursery" | "internal" => "Allow", - _ => panic!("unknown category {category}"), - }, - ); + let level = format_ident!("{}", match category.as_str() { + "correctness" => "Deny", + "style" | "suspicious" | "complexity" | "perf" => "Warn", + "pedantic" | "restriction" | "cargo" | "nursery" | "internal" => "Allow", + _ => panic!("unknown category {category}"), + },); let info_name = format_ident!("{name}_INFO"); diff --git a/src/tools/clippy/lintcheck/src/driver.rs b/src/tools/clippy/lintcheck/src/driver.rs index 2fda2b00f87..87ab14ba0cf 100644 --- a/src/tools/clippy/lintcheck/src/driver.rs +++ b/src/tools/clippy/lintcheck/src/driver.rs @@ -1,4 +1,4 @@ -use crate::recursive::{deserialize_line, serialize_line, DriverInfo}; +use crate::recursive::{DriverInfo, deserialize_line, serialize_line}; use std::io::{self, BufReader, Write}; use std::net::TcpStream; diff --git a/src/tools/clippy/lintcheck/src/main.rs b/src/tools/clippy/lintcheck/src/main.rs index acb6eaa5278..8c62dd3ed38 100644 --- a/src/tools/clippy/lintcheck/src/main.rs +++ b/src/tools/clippy/lintcheck/src/main.rs @@ -68,7 +68,7 @@ impl Crate { total_crates_to_lint: usize, config: &LintcheckConfig, lint_levels_args: &[String], - server: &Option<LintcheckServer>, + server: Option<&LintcheckServer>, ) -> Vec<ClippyCheckOutput> { // advance the atomic index by one let index = target_dir_index.fetch_add(1, Ordering::SeqCst); @@ -359,7 +359,7 @@ fn lintcheck(config: LintcheckConfig) { crates.len(), &config, &lint_level_args, - &server, + server.as_ref(), ) }) .collect(); diff --git a/src/tools/clippy/lintcheck/src/recursive.rs b/src/tools/clippy/lintcheck/src/recursive.rs index 6a662970ae8..57073f52364 100644 --- a/src/tools/clippy/lintcheck/src/recursive.rs +++ b/src/tools/clippy/lintcheck/src/recursive.rs @@ -3,8 +3,8 @@ //! [`LintcheckServer`] to ask if it should be skipped, and if not sends the stderr of running //! clippy on the crate to the server -use crate::input::RecursiveOptions; use crate::ClippyWarning; +use crate::input::RecursiveOptions; use std::collections::HashSet; use std::io::{BufRead, BufReader, Read, Write}; diff --git a/src/tools/clippy/rust-toolchain b/src/tools/clippy/rust-toolchain index 0be2e81810e..f0c8651efce 100644 --- a/src/tools/clippy/rust-toolchain +++ b/src/tools/clippy/rust-toolchain @@ -1,4 +1,4 @@ [toolchain] -channel = "nightly-2024-08-23" +channel = "nightly-2024-10-03" components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" diff --git a/src/tools/clippy/src/driver.rs b/src/tools/clippy/src/driver.rs index 0ac3f35b446..c66837dc998 100644 --- a/src/tools/clippy/src/driver.rs +++ b/src/tools/clippy/src/driver.rs @@ -15,14 +15,13 @@ extern crate rustc_session; extern crate rustc_span; use rustc_interface::interface; +use rustc_session::EarlyDiagCtxt; use rustc_session::config::ErrorOutputType; use rustc_session::parse::ParseSess; -use rustc_session::EarlyDiagCtxt; use rustc_span::symbol::Symbol; use std::env; use std::fs::read_to_string; -use std::ops::Deref; use std::path::Path; use std::process::exit; @@ -30,12 +29,8 @@ use anstream::println; /// If a command-line option matches `find_arg`, then apply the predicate `pred` on its value. If /// true, then return it. The parameter is assumed to be either `--arg=value` or `--arg value`. -fn arg_value<'a, T: Deref<Target = str>>( - args: &'a [T], - find_arg: &str, - pred: impl Fn(&str) -> bool, -) -> Option<&'a str> { - let mut args = args.iter().map(Deref::deref); +fn arg_value<'a>(args: &'a [String], find_arg: &str, pred: impl Fn(&str) -> bool) -> Option<&'a str> { + let mut args = args.iter().map(String::as_str); while let Some(arg) = args.next() { let mut arg = arg.splitn(2, '='); if arg.next() != Some(find_arg) { @@ -50,11 +45,15 @@ fn arg_value<'a, T: Deref<Target = str>>( None } +fn has_arg(args: &[String], find_arg: &str) -> bool { + args.iter().any(|arg| find_arg == arg.split('=').next().unwrap()) +} + #[test] fn test_arg_value() { - let args = &["--bar=bar", "--foobar", "123", "--foo"]; + let args = &["--bar=bar", "--foobar", "123", "--foo"].map(String::from); - assert_eq!(arg_value(&[] as &[&str], "--foobar", |_| true), None); + assert_eq!(arg_value(&[], "--foobar", |_| true), None); assert_eq!(arg_value(args, "--bar", |_| false), None); assert_eq!(arg_value(args, "--bar", |_| true), Some("bar")); assert_eq!(arg_value(args, "--bar", |p| p == "bar"), Some("bar")); @@ -65,11 +64,21 @@ fn test_arg_value() { assert_eq!(arg_value(args, "--foo", |_| true), None); } -fn track_clippy_args(psess: &mut ParseSess, args_env_var: &Option<String>) { - psess.env_depinfo.get_mut().insert(( - Symbol::intern("CLIPPY_ARGS"), - args_env_var.as_deref().map(Symbol::intern), - )); +#[test] +fn test_has_arg() { + let args = &["--foo=bar", "-vV", "--baz"].map(String::from); + assert!(has_arg(args, "--foo")); + assert!(has_arg(args, "--baz")); + assert!(has_arg(args, "-vV")); + + assert!(!has_arg(args, "--bar")); +} + +fn track_clippy_args(psess: &mut ParseSess, args_env_var: Option<&str>) { + psess + .env_depinfo + .get_mut() + .insert((Symbol::intern("CLIPPY_ARGS"), args_env_var.map(Symbol::intern))); } /// Track files that may be accessed at runtime in `file_depinfo` so that cargo will re-run clippy @@ -113,7 +122,7 @@ impl rustc_driver::Callbacks for RustcCallbacks { fn config(&mut self, config: &mut interface::Config) { let clippy_args_var = self.clippy_args_var.take(); config.psess_created = Some(Box::new(move |psess| { - track_clippy_args(psess, &clippy_args_var); + track_clippy_args(psess, clippy_args_var.as_deref()); })); } } @@ -130,7 +139,7 @@ impl rustc_driver::Callbacks for ClippyCallbacks { let previous = config.register_lints.take(); let clippy_args_var = self.clippy_args_var.take(); config.psess_created = Some(Box::new(move |psess| { - track_clippy_args(psess, &clippy_args_var); + track_clippy_args(psess, clippy_args_var.as_deref()); track_files(psess); // Trigger a rebuild if CLIPPY_CONF_DIR changes. The value must be a valid string so @@ -189,7 +198,7 @@ pub fn main() { let mut orig_args = rustc_driver::args::raw_args(&early_dcx)?; let has_sysroot_arg = |args: &mut [String]| -> bool { - if arg_value(args, "--sysroot", |_| true).is_some() { + if has_arg(args, "--sysroot") { return true; } // https://doc.rust-lang.org/rustc/command-line-arguments.html#path-load-command-line-flags-from-a-path @@ -199,7 +208,7 @@ pub fn main() { if let Some(arg_file_path) = arg.strip_prefix('@') { if let Ok(arg_file) = read_to_string(arg_file_path) { let split_arg_file: Vec<String> = arg_file.lines().map(ToString::to_string).collect(); - if arg_value(&split_arg_file, "--sysroot", |_| true).is_some() { + if has_arg(&split_arg_file, "--sysroot") { return true; } } @@ -268,21 +277,21 @@ pub fn main() { }, _ => Some(s.to_string()), }) - // FIXME: remove this line in 1.79 to only keep `--cfg clippy`. - .chain(vec!["--cfg".into(), r#"feature="cargo-clippy""#.into()]) .chain(vec!["--cfg".into(), "clippy".into()]) .collect::<Vec<String>>(); - // We enable Clippy if one of the following conditions is met - // - IF Clippy is run on its test suite OR - // - IF Clippy is run on the main crate, not on deps (`!cap_lints_allow`) THEN - // - IF `--no-deps` is not set (`!no_deps`) OR - // - IF `--no-deps` is set and Clippy is run on the specified primary package + // If no Clippy lints will be run we do not need to run Clippy let cap_lints_allow = arg_value(&orig_args, "--cap-lints", |val| val == "allow").is_some() && arg_value(&orig_args, "--force-warn", |val| val.contains("clippy::")).is_none(); - let in_primary_package = env::var("CARGO_PRIMARY_PACKAGE").is_ok(); - let clippy_enabled = !cap_lints_allow && (!no_deps || in_primary_package); + // If `--no-deps` is enabled only lint the primary pacakge + let relevant_package = !no_deps || env::var("CARGO_PRIMARY_PACKAGE").is_ok(); + + // Do not run Clippy for Cargo's info queries so that invalid CLIPPY_ARGS are not cached + // https://github.com/rust-lang/cargo/issues/14385 + let info_query = has_arg(&orig_args, "-vV") || has_arg(&orig_args, "--print"); + + let clippy_enabled = !cap_lints_allow && relevant_package && !info_query; if clippy_enabled { args.extend(clippy_args); rustc_driver::RunCompiler::new(&args, &mut ClippyCallbacks { clippy_args_var }) diff --git a/src/tools/clippy/tests/compile-test.rs b/src/tools/clippy/tests/compile-test.rs index 9754254cdd0..af2aa519257 100644 --- a/src/tools/clippy/tests/compile-test.rs +++ b/src/tools/clippy/tests/compile-test.rs @@ -2,26 +2,25 @@ #![warn(rust_2018_idioms, unused_lifetimes)] #![allow(unused_extern_crates)] -use cargo_metadata::diagnostic::{Applicability, Diagnostic}; use cargo_metadata::Message; +use cargo_metadata::diagnostic::{Applicability, Diagnostic}; use clippy_config::ClippyConfiguration; +use clippy_lints::LintInfo; use clippy_lints::declared_lints::LINTS; use clippy_lints::deprecated_lints::{DEPRECATED, DEPRECATED_VERSION, RENAMED}; -use clippy_lints::LintInfo; use serde::{Deserialize, Serialize}; use test_utils::IS_RUSTC_TEST_SUITE; -use ui_test::custom_flags::rustfix::RustfixMode; use ui_test::custom_flags::Flag; +use ui_test::custom_flags::rustfix::RustfixMode; use ui_test::spanned::Spanned; -use ui_test::test_result::TestRun; -use ui_test::{status_emitter, Args, CommandBuilder, Config, Match, OutputConflictHandling}; +use ui_test::{Args, CommandBuilder, Config, Match, OutputConflictHandling, status_emitter}; use std::collections::{BTreeMap, HashMap}; use std::env::{self, set_var, var_os}; use std::ffi::{OsStr, OsString}; use std::fmt::Write; use std::path::{Path, PathBuf}; -use std::sync::mpsc::{channel, Sender}; +use std::sync::mpsc::{Sender, channel}; use std::{fs, iter, thread}; // Test dependencies may need an `extern crate` here to ensure that they show up @@ -469,15 +468,14 @@ fn applicability_ord(applicability: &Applicability) -> u8 { impl Flag for DiagnosticCollector { fn post_test_action( &self, - _config: &ui_test::per_test_config::TestConfig<'_>, - _cmd: &mut std::process::Command, + _config: &ui_test::per_test_config::TestConfig, output: &std::process::Output, - _build_manager: &ui_test::build_manager::BuildManager<'_>, - ) -> Result<Vec<TestRun>, ui_test::Errored> { + _build_manager: &ui_test::build_manager::BuildManager, + ) -> Result<(), ui_test::Errored> { if !output.stderr.is_empty() { self.sender.send(output.stderr.clone()).unwrap(); } - Ok(Vec::new()) + Ok(()) } fn clone_inner(&self) -> Box<dyn Flag> { diff --git a/src/tools/clippy/tests/config-metadata.rs b/src/tools/clippy/tests/config-metadata.rs index 3e3711873ba..628dfc8f758 100644 --- a/src/tools/clippy/tests/config-metadata.rs +++ b/src/tools/clippy/tests/config-metadata.rs @@ -1,6 +1,6 @@ #![feature(rustc_private)] -use clippy_config::{get_configuration_metadata, ClippyConfiguration}; +use clippy_config::{ClippyConfiguration, get_configuration_metadata}; use itertools::Itertools; use regex::Regex; use std::borrow::Cow; diff --git a/src/tools/clippy/tests/dogfood.rs b/src/tools/clippy/tests/dogfood.rs index 8d10d5e7161..858be389a9e 100644 --- a/src/tools/clippy/tests/dogfood.rs +++ b/src/tools/clippy/tests/dogfood.rs @@ -6,11 +6,9 @@ #![warn(rust_2018_idioms, unused_lifetimes)] use itertools::Itertools; -use std::fs::File; use std::io::{self, IsTerminal}; use std::path::PathBuf; use std::process::Command; -use std::time::SystemTime; use test_utils::IS_RUSTC_TEST_SUITE; use ui_test::Args; @@ -28,11 +26,7 @@ fn main() { println!("dogfood: test"); } } else if !args.skip.iter().any(|arg| arg == "dogfood") { - if args.filters.iter().any(|arg| arg == "collect_metadata") { - collect_metadata(); - } else { - dogfood(); - } + dogfood(); } } @@ -61,47 +55,6 @@ fn dogfood() { ); } -fn collect_metadata() { - assert!(cfg!(feature = "internal")); - - // Setup for validation - let metadata_output_path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("util/gh-pages/lints.json"); - let start_time = SystemTime::now(); - - // Run collection as is - std::env::set_var("ENABLE_METADATA_COLLECTION", "1"); - assert!(run_clippy_for_package( - "clippy_lints", - &["-A", "unfulfilled_lint_expectations"] - )); - - // Check if cargo caching got in the way - if let Ok(file) = File::open(metadata_output_path) { - if let Ok(metadata) = file.metadata() { - if let Ok(last_modification) = metadata.modified() { - if last_modification > start_time { - // The output file has been modified. Most likely by a hungry - // metadata collection monster. So We'll return. - return; - } - } - } - } - - // Force cargo to invalidate the caches - filetime::set_file_mtime( - PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("clippy_lints/src/lib.rs"), - filetime::FileTime::now(), - ) - .unwrap(); - - // Running the collection again - assert!(run_clippy_for_package( - "clippy_lints", - &["-A", "unfulfilled_lint_expectations"] - )); -} - #[must_use] fn run_clippy_for_package(project: &str, args: &[&str]) -> bool { let root_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")); diff --git a/src/tools/clippy/tests/ui-internal/unnecessary_def_path.fixed b/src/tools/clippy/tests/ui-internal/unnecessary_def_path.fixed index 3908411da82..0a994842834 100644 --- a/src/tools/clippy/tests/ui-internal/unnecessary_def_path.fixed +++ b/src/tools/clippy/tests/ui-internal/unnecessary_def_path.fixed @@ -13,7 +13,7 @@ extern crate rustc_span; use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item, match_type}; #[allow(unused)] use clippy_utils::{ - is_expr_path_def_path, is_path_diagnostic_item, is_res_diagnostic_ctor, is_res_lang_ctor, is_trait_method, + is_enum_variant_ctor, is_expr_path_def_path, is_path_diagnostic_item, is_res_lang_ctor, is_trait_method, match_def_path, match_trait_method, path_res, }; @@ -22,8 +22,8 @@ use rustc_hir::LangItem; #[allow(unused)] use rustc_span::sym; -use rustc_hir::def_id::DefId; use rustc_hir::Expr; +use rustc_hir::def_id::DefId; use rustc_lint::LateContext; use rustc_middle::ty::Ty; diff --git a/src/tools/clippy/tests/ui-internal/unnecessary_def_path.rs b/src/tools/clippy/tests/ui-internal/unnecessary_def_path.rs index 632e26215a4..ba68de6c6d0 100644 --- a/src/tools/clippy/tests/ui-internal/unnecessary_def_path.rs +++ b/src/tools/clippy/tests/ui-internal/unnecessary_def_path.rs @@ -13,7 +13,7 @@ extern crate rustc_span; use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item, match_type}; #[allow(unused)] use clippy_utils::{ - is_expr_path_def_path, is_path_diagnostic_item, is_res_diagnostic_ctor, is_res_lang_ctor, is_trait_method, + is_enum_variant_ctor, is_expr_path_def_path, is_path_diagnostic_item, is_res_lang_ctor, is_trait_method, match_def_path, match_trait_method, path_res, }; @@ -22,8 +22,8 @@ use rustc_hir::LangItem; #[allow(unused)] use rustc_span::sym; -use rustc_hir::def_id::DefId; use rustc_hir::Expr; +use rustc_hir::def_id::DefId; use rustc_lint::LateContext; use rustc_middle::ty::Ty; diff --git a/src/tools/clippy/tests/ui-toml/disallowed_names_append/disallowed_names.rs b/src/tools/clippy/tests/ui-toml/disallowed_names_append/disallowed_names.rs index a2e2b46c426..61ae8de8e33 100644 --- a/src/tools/clippy/tests/ui-toml/disallowed_names_append/disallowed_names.rs +++ b/src/tools/clippy/tests/ui-toml/disallowed_names_append/disallowed_names.rs @@ -1,4 +1,4 @@ -#[warn(clippy::disallowed_names)] +#![warn(clippy::disallowed_names)] fn main() { // `foo` is part of the default configuration diff --git a/src/tools/clippy/tests/ui-toml/disallowed_names_replace/disallowed_names.rs b/src/tools/clippy/tests/ui-toml/disallowed_names_replace/disallowed_names.rs index a2e2b46c426..61ae8de8e33 100644 --- a/src/tools/clippy/tests/ui-toml/disallowed_names_replace/disallowed_names.rs +++ b/src/tools/clippy/tests/ui-toml/disallowed_names_replace/disallowed_names.rs @@ -1,4 +1,4 @@ -#[warn(clippy::disallowed_names)] +#![warn(clippy::disallowed_names)] fn main() { // `foo` is part of the default configuration diff --git a/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.fixed b/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.fixed index 5f4f007cf5c..a6072111dc0 100644 --- a/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.fixed +++ b/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.fixed @@ -2,7 +2,7 @@ use std::alloc as colla; use std::option::Option as Maybe; -use std::process::{exit as goodbye, Child as Kid}; +use std::process::{Child as Kid, exit as goodbye}; use std::thread::sleep as thread_sleep; #[rustfmt::skip] use std::{ diff --git a/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.rs b/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.rs index f60058c8628..c2b61aab5b3 100644 --- a/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.rs +++ b/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.rs @@ -2,7 +2,7 @@ use std::alloc as colla; use std::option::Option as Maybe; -use std::process::{exit as wrong_exit, Child as Kid}; +use std::process::{Child as Kid, exit as wrong_exit}; use std::thread::sleep; #[rustfmt::skip] use std::{ diff --git a/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.stderr b/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.stderr index f66938c83fb..d3bb07ec47f 100644 --- a/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.stderr +++ b/src/tools/clippy/tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.stderr @@ -1,8 +1,8 @@ error: this import should be renamed - --> tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.rs:5:20 + --> tests/ui-toml/missing_enforced_import_rename/conf_missing_enforced_import_rename.rs:5:34 | -LL | use std::process::{exit as wrong_exit, Child as Kid}; - | ^^^^^^^^^^^^^^^^^^ help: try: `exit as goodbye` +LL | use std::process::{Child as Kid, exit as wrong_exit}; + | ^^^^^^^^^^^^^^^^^^ help: try: `exit as goodbye` | = note: `-D clippy::missing-enforced-import-renames` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::missing_enforced_import_renames)]` diff --git a/src/tools/clippy/tests/ui-toml/panic/panic.rs b/src/tools/clippy/tests/ui-toml/panic/panic.rs index 618a37ddfc5..b6264c950e4 100644 --- a/src/tools/clippy/tests/ui-toml/panic/panic.rs +++ b/src/tools/clippy/tests/ui-toml/panic/panic.rs @@ -1,5 +1,6 @@ //@compile-flags: --test #![warn(clippy::panic)] +use std::panic::panic_any; fn main() { enum Enam { @@ -12,6 +13,10 @@ fn main() { } } +fn issue_13292() { + panic_any("should lint") +} + #[test] fn lonely_test() { enum Enam { diff --git a/src/tools/clippy/tests/ui-toml/panic/panic.stderr b/src/tools/clippy/tests/ui-toml/panic/panic.stderr index bf7503e086c..a034207d919 100644 --- a/src/tools/clippy/tests/ui-toml/panic/panic.stderr +++ b/src/tools/clippy/tests/ui-toml/panic/panic.stderr @@ -1,5 +1,5 @@ error: `panic` should not be present in production code - --> tests/ui-toml/panic/panic.rs:11:14 + --> tests/ui-toml/panic/panic.rs:12:14 | LL | _ => panic!(""), | ^^^^^^^^^^ @@ -7,5 +7,11 @@ LL | _ => panic!(""), = note: `-D clippy::panic` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::panic)]` -error: aborting due to 1 previous error +error: `panic_any` should not be present in production code + --> tests/ui-toml/panic/panic.rs:17:5 + | +LL | panic_any("should lint") + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 2 previous errors diff --git a/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.rs b/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.rs index 232bccf6a15..4613a74b85d 100644 --- a/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.rs +++ b/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.rs @@ -7,7 +7,8 @@ clippy::no_effect, clippy::unnecessary_operation, clippy::useless_vec, - clippy::out_of_bounds_indexing + clippy::out_of_bounds_indexing, + clippy::needless_lifetimes )] const ARR: [i32; 2] = [1, 2]; diff --git a/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.stderr b/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.stderr index 5ce2ed2ffae..120f5c35cb0 100644 --- a/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.stderr +++ b/src/tools/clippy/tests/ui-toml/suppress_lint_in_const/test.stderr @@ -1,5 +1,5 @@ error: indexing may panic - --> tests/ui-toml/suppress_lint_in_const/test.rs:26:5 + --> tests/ui-toml/suppress_lint_in_const/test.rs:27:5 | LL | x[index]; | ^^^^^^^^ @@ -9,7 +9,7 @@ LL | x[index]; = help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]` error: indexing may panic - --> tests/ui-toml/suppress_lint_in_const/test.rs:41:5 + --> tests/ui-toml/suppress_lint_in_const/test.rs:42:5 | LL | v[0]; | ^^^^ @@ -17,7 +17,7 @@ LL | v[0]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui-toml/suppress_lint_in_const/test.rs:42:5 + --> tests/ui-toml/suppress_lint_in_const/test.rs:43:5 | LL | v[10]; | ^^^^^ @@ -25,7 +25,7 @@ LL | v[10]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui-toml/suppress_lint_in_const/test.rs:43:5 + --> tests/ui-toml/suppress_lint_in_const/test.rs:44:5 | LL | v[1 << 3]; | ^^^^^^^^^ @@ -33,7 +33,7 @@ LL | v[1 << 3]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui-toml/suppress_lint_in_const/test.rs:49:5 + --> tests/ui-toml/suppress_lint_in_const/test.rs:50:5 | LL | v[N]; | ^^^^ @@ -41,7 +41,7 @@ LL | v[N]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui-toml/suppress_lint_in_const/test.rs:50:5 + --> tests/ui-toml/suppress_lint_in_const/test.rs:51:5 | LL | v[M]; | ^^^^ diff --git a/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.fixed b/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.fixed index baf939af24e..cdb8fa0454c 100644 --- a/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.fixed +++ b/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.fixed @@ -86,6 +86,7 @@ mod issue9612 { util(); } + #[allow(unconditional_panic)] fn util() { let _a: u8 = 4.try_into().unwrap(); let _a: u8 = 5.try_into().expect(""); diff --git a/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.rs b/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.rs index e300ba18c33..e53d53db5f7 100644 --- a/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.rs +++ b/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.rs @@ -86,6 +86,7 @@ mod issue9612 { util(); } + #[allow(unconditional_panic)] fn util() { let _a: u8 = 4.try_into().unwrap(); let _a: u8 = 5.try_into().expect(""); diff --git a/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.stderr b/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.stderr index 320578bfabc..b58ce9b8af3 100644 --- a/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.stderr +++ b/src/tools/clippy/tests/ui-toml/unwrap_used/unwrap_used.stderr @@ -274,7 +274,7 @@ LL | let _ = &boxed_slice[1]; | ~~~~~~~~~~~~~~~ error: called `.get().unwrap()` on a slice - --> tests/ui-toml/unwrap_used/unwrap_used.rs:93:17 + --> tests/ui-toml/unwrap_used/unwrap_used.rs:94:17 | LL | let _ = Box::new([0]).get(1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/allow_attributes.fixed b/src/tools/clippy/tests/ui/allow_attributes.fixed index 49ee3ee17c7..058dbb77a32 100644 --- a/src/tools/clippy/tests/ui/allow_attributes.fixed +++ b/src/tools/clippy/tests/ui/allow_attributes.fixed @@ -58,3 +58,10 @@ fn msrv_1_80() { #[allow(unused)] let x = 1; } + +#[deny(clippy::allow_attributes)] +fn deny_allow_attributes() -> Option<u8> { + let allow = None; + allow?; + Some(42) +} diff --git a/src/tools/clippy/tests/ui/allow_attributes.rs b/src/tools/clippy/tests/ui/allow_attributes.rs index 854acf8348d..6d94ce50e4c 100644 --- a/src/tools/clippy/tests/ui/allow_attributes.rs +++ b/src/tools/clippy/tests/ui/allow_attributes.rs @@ -58,3 +58,10 @@ fn msrv_1_80() { #[allow(unused)] let x = 1; } + +#[deny(clippy::allow_attributes)] +fn deny_allow_attributes() -> Option<u8> { + let allow = None; + allow?; + Some(42) +} diff --git a/src/tools/clippy/tests/ui/allow_attributes_without_reason.rs b/src/tools/clippy/tests/ui/allow_attributes_without_reason.rs index 86f6b2c5742..334e7ddd9d2 100644 --- a/src/tools/clippy/tests/ui/allow_attributes_without_reason.rs +++ b/src/tools/clippy/tests/ui/allow_attributes_without_reason.rs @@ -15,7 +15,6 @@ use proc_macros::{external, with_span}; #[warn(deref_nullptr)] #[deny(deref_nullptr)] #[forbid(deref_nullptr)] - fn main() { external! { #[allow(dead_code)] diff --git a/src/tools/clippy/tests/ui/allow_attributes_without_reason.stderr b/src/tools/clippy/tests/ui/allow_attributes_without_reason.stderr index 9bc3ca0f2af..86d7845df04 100644 --- a/src/tools/clippy/tests/ui/allow_attributes_without_reason.stderr +++ b/src/tools/clippy/tests/ui/allow_attributes_without_reason.stderr @@ -36,7 +36,7 @@ LL | #[expect(dead_code)] = help: try adding a reason at the end with `, reason = ".."` error: `allow` attribute without specifying a reason - --> tests/ui/allow_attributes_without_reason.rs:47:5 + --> tests/ui/allow_attributes_without_reason.rs:46:5 | LL | #[allow(unused)] | ^^^^^^^^^^^^^^^^ @@ -44,7 +44,7 @@ LL | #[allow(unused)] = help: try adding a reason at the end with `, reason = ".."` error: `allow` attribute without specifying a reason - --> tests/ui/allow_attributes_without_reason.rs:47:5 + --> tests/ui/allow_attributes_without_reason.rs:46:5 | LL | #[allow(unused)] | ^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/arithmetic_side_effects.rs b/src/tools/clippy/tests/ui/arithmetic_side_effects.rs index 0838d064a5f..3f204073085 100644 --- a/src/tools/clippy/tests/ui/arithmetic_side_effects.rs +++ b/src/tools/clippy/tests/ui/arithmetic_side_effects.rs @@ -2,7 +2,6 @@ #![feature(f128)] #![feature(f16)] - #![allow( clippy::assign_op_pattern, clippy::erasing_op, diff --git a/src/tools/clippy/tests/ui/arithmetic_side_effects.stderr b/src/tools/clippy/tests/ui/arithmetic_side_effects.stderr index 78914667bf3..78b1aca4b8a 100644 --- a/src/tools/clippy/tests/ui/arithmetic_side_effects.stderr +++ b/src/tools/clippy/tests/ui/arithmetic_side_effects.stderr @@ -1,5 +1,5 @@ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:167:13 + --> tests/ui/arithmetic_side_effects.rs:166:13 | LL | let _ = 1f16 + 1f16; | ^^^^^^^^^^^ @@ -8,733 +8,733 @@ LL | let _ = 1f16 + 1f16; = help: to override `-D warnings` add `#[allow(clippy::arithmetic_side_effects)]` error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:170:13 + --> tests/ui/arithmetic_side_effects.rs:169:13 | LL | let _ = 1f128 + 1f128; | ^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:308:5 + --> tests/ui/arithmetic_side_effects.rs:307:5 | LL | _n += 1; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:309:5 + --> tests/ui/arithmetic_side_effects.rs:308:5 | LL | _n += &1; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:310:5 + --> tests/ui/arithmetic_side_effects.rs:309:5 | LL | _n -= 1; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:311:5 + --> tests/ui/arithmetic_side_effects.rs:310:5 | LL | _n -= &1; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:312:5 + --> tests/ui/arithmetic_side_effects.rs:311:5 | LL | _n /= 0; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:313:5 + --> tests/ui/arithmetic_side_effects.rs:312:5 | LL | _n /= &0; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:314:5 + --> tests/ui/arithmetic_side_effects.rs:313:5 | LL | _n %= 0; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:315:5 + --> tests/ui/arithmetic_side_effects.rs:314:5 | LL | _n %= &0; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:316:5 + --> tests/ui/arithmetic_side_effects.rs:315:5 | LL | _n *= 2; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:317:5 + --> tests/ui/arithmetic_side_effects.rs:316:5 | LL | _n *= &2; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:318:5 + --> tests/ui/arithmetic_side_effects.rs:317:5 | LL | _n += -1; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:319:5 + --> tests/ui/arithmetic_side_effects.rs:318:5 | LL | _n += &-1; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:320:5 + --> tests/ui/arithmetic_side_effects.rs:319:5 | LL | _n -= -1; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:321:5 + --> tests/ui/arithmetic_side_effects.rs:320:5 | LL | _n -= &-1; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:322:5 + --> tests/ui/arithmetic_side_effects.rs:321:5 | LL | _n /= -0; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:323:5 + --> tests/ui/arithmetic_side_effects.rs:322:5 | LL | _n /= &-0; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:324:5 + --> tests/ui/arithmetic_side_effects.rs:323:5 | LL | _n %= -0; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:325:5 + --> tests/ui/arithmetic_side_effects.rs:324:5 | LL | _n %= &-0; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:326:5 + --> tests/ui/arithmetic_side_effects.rs:325:5 | LL | _n *= -2; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:327:5 + --> tests/ui/arithmetic_side_effects.rs:326:5 | LL | _n *= &-2; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:328:5 + --> tests/ui/arithmetic_side_effects.rs:327:5 | LL | _custom += Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:329:5 + --> tests/ui/arithmetic_side_effects.rs:328:5 | LL | _custom += &Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:330:5 + --> tests/ui/arithmetic_side_effects.rs:329:5 | LL | _custom -= Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:331:5 + --> tests/ui/arithmetic_side_effects.rs:330:5 | LL | _custom -= &Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:332:5 + --> tests/ui/arithmetic_side_effects.rs:331:5 | LL | _custom /= Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:333:5 + --> tests/ui/arithmetic_side_effects.rs:332:5 | LL | _custom /= &Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:334:5 + --> tests/ui/arithmetic_side_effects.rs:333:5 | LL | _custom %= Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:335:5 + --> tests/ui/arithmetic_side_effects.rs:334:5 | LL | _custom %= &Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:336:5 + --> tests/ui/arithmetic_side_effects.rs:335:5 | LL | _custom *= Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:337:5 + --> tests/ui/arithmetic_side_effects.rs:336:5 | LL | _custom *= &Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:338:5 + --> tests/ui/arithmetic_side_effects.rs:337:5 | LL | _custom >>= Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:339:5 + --> tests/ui/arithmetic_side_effects.rs:338:5 | LL | _custom >>= &Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:340:5 + --> tests/ui/arithmetic_side_effects.rs:339:5 | LL | _custom <<= Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:341:5 + --> tests/ui/arithmetic_side_effects.rs:340:5 | LL | _custom <<= &Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:342:5 + --> tests/ui/arithmetic_side_effects.rs:341:5 | LL | _custom += -Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:343:5 + --> tests/ui/arithmetic_side_effects.rs:342:5 | LL | _custom += &-Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:344:5 + --> tests/ui/arithmetic_side_effects.rs:343:5 | LL | _custom -= -Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:345:5 + --> tests/ui/arithmetic_side_effects.rs:344:5 | LL | _custom -= &-Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:346:5 + --> tests/ui/arithmetic_side_effects.rs:345:5 | LL | _custom /= -Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:347:5 + --> tests/ui/arithmetic_side_effects.rs:346:5 | LL | _custom /= &-Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:348:5 + --> tests/ui/arithmetic_side_effects.rs:347:5 | LL | _custom %= -Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:349:5 + --> tests/ui/arithmetic_side_effects.rs:348:5 | LL | _custom %= &-Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:350:5 + --> tests/ui/arithmetic_side_effects.rs:349:5 | LL | _custom *= -Custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:351:5 + --> tests/ui/arithmetic_side_effects.rs:350:5 | LL | _custom *= &-Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:352:5 + --> tests/ui/arithmetic_side_effects.rs:351:5 | LL | _custom >>= -Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:353:5 + --> tests/ui/arithmetic_side_effects.rs:352:5 | LL | _custom >>= &-Custom; | ^^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:354:5 + --> tests/ui/arithmetic_side_effects.rs:353:5 | LL | _custom <<= -Custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:355:5 + --> tests/ui/arithmetic_side_effects.rs:354:5 | LL | _custom <<= &-Custom; | ^^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:358:10 + --> tests/ui/arithmetic_side_effects.rs:357:10 | LL | _n = _n + 1; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:359:10 + --> tests/ui/arithmetic_side_effects.rs:358:10 | LL | _n = _n + &1; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:360:10 + --> tests/ui/arithmetic_side_effects.rs:359:10 | LL | _n = 1 + _n; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:361:10 + --> tests/ui/arithmetic_side_effects.rs:360:10 | LL | _n = &1 + _n; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:362:10 + --> tests/ui/arithmetic_side_effects.rs:361:10 | LL | _n = _n - 1; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:363:10 + --> tests/ui/arithmetic_side_effects.rs:362:10 | LL | _n = _n - &1; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:364:10 + --> tests/ui/arithmetic_side_effects.rs:363:10 | LL | _n = 1 - _n; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:365:10 + --> tests/ui/arithmetic_side_effects.rs:364:10 | LL | _n = &1 - _n; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:366:10 + --> tests/ui/arithmetic_side_effects.rs:365:10 | LL | _n = _n / 0; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:367:10 + --> tests/ui/arithmetic_side_effects.rs:366:10 | LL | _n = _n / &0; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:368:10 + --> tests/ui/arithmetic_side_effects.rs:367:10 | LL | _n = _n % 0; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:369:10 + --> tests/ui/arithmetic_side_effects.rs:368:10 | LL | _n = _n % &0; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:370:10 + --> tests/ui/arithmetic_side_effects.rs:369:10 | LL | _n = _n * 2; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:371:10 + --> tests/ui/arithmetic_side_effects.rs:370:10 | LL | _n = _n * &2; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:372:10 + --> tests/ui/arithmetic_side_effects.rs:371:10 | LL | _n = 2 * _n; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:373:10 + --> tests/ui/arithmetic_side_effects.rs:372:10 | LL | _n = &2 * _n; | ^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:374:10 + --> tests/ui/arithmetic_side_effects.rs:373:10 | LL | _n = 23 + &85; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:375:10 + --> tests/ui/arithmetic_side_effects.rs:374:10 | LL | _n = &23 + 85; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:376:10 + --> tests/ui/arithmetic_side_effects.rs:375:10 | LL | _n = &23 + &85; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:377:15 + --> tests/ui/arithmetic_side_effects.rs:376:15 | LL | _custom = _custom + _custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:378:15 + --> tests/ui/arithmetic_side_effects.rs:377:15 | LL | _custom = _custom + &_custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:379:15 + --> tests/ui/arithmetic_side_effects.rs:378:15 | LL | _custom = Custom + _custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:380:15 + --> tests/ui/arithmetic_side_effects.rs:379:15 | LL | _custom = &Custom + _custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:381:15 + --> tests/ui/arithmetic_side_effects.rs:380:15 | LL | _custom = _custom - Custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:382:15 + --> tests/ui/arithmetic_side_effects.rs:381:15 | LL | _custom = _custom - &Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:383:15 + --> tests/ui/arithmetic_side_effects.rs:382:15 | LL | _custom = Custom - _custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:384:15 + --> tests/ui/arithmetic_side_effects.rs:383:15 | LL | _custom = &Custom - _custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:385:15 + --> tests/ui/arithmetic_side_effects.rs:384:15 | LL | _custom = _custom / Custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:386:15 + --> tests/ui/arithmetic_side_effects.rs:385:15 | LL | _custom = _custom / &Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:387:15 + --> tests/ui/arithmetic_side_effects.rs:386:15 | LL | _custom = _custom % Custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:388:15 + --> tests/ui/arithmetic_side_effects.rs:387:15 | LL | _custom = _custom % &Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:389:15 + --> tests/ui/arithmetic_side_effects.rs:388:15 | LL | _custom = _custom * Custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:390:15 + --> tests/ui/arithmetic_side_effects.rs:389:15 | LL | _custom = _custom * &Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:391:15 + --> tests/ui/arithmetic_side_effects.rs:390:15 | LL | _custom = Custom * _custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:392:15 + --> tests/ui/arithmetic_side_effects.rs:391:15 | LL | _custom = &Custom * _custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:393:15 + --> tests/ui/arithmetic_side_effects.rs:392:15 | LL | _custom = Custom + &Custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:394:15 + --> tests/ui/arithmetic_side_effects.rs:393:15 | LL | _custom = &Custom + Custom; | ^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:395:15 + --> tests/ui/arithmetic_side_effects.rs:394:15 | LL | _custom = &Custom + &Custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:396:15 + --> tests/ui/arithmetic_side_effects.rs:395:15 | LL | _custom = _custom >> _custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:397:15 + --> tests/ui/arithmetic_side_effects.rs:396:15 | LL | _custom = _custom >> &_custom; | ^^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:398:15 + --> tests/ui/arithmetic_side_effects.rs:397:15 | LL | _custom = Custom << _custom; | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:399:15 + --> tests/ui/arithmetic_side_effects.rs:398:15 | LL | _custom = &Custom << _custom; | ^^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:402:23 + --> tests/ui/arithmetic_side_effects.rs:401:23 | LL | _n.saturating_div(0); | ^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:403:21 + --> tests/ui/arithmetic_side_effects.rs:402:21 | LL | _n.wrapping_div(0); | ^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:404:21 + --> tests/ui/arithmetic_side_effects.rs:403:21 | LL | _n.wrapping_rem(0); | ^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:405:28 + --> tests/ui/arithmetic_side_effects.rs:404:28 | LL | _n.wrapping_rem_euclid(0); | ^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:407:23 + --> tests/ui/arithmetic_side_effects.rs:406:23 | LL | _n.saturating_div(_n); | ^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:408:21 + --> tests/ui/arithmetic_side_effects.rs:407:21 | LL | _n.wrapping_div(_n); | ^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:409:21 + --> tests/ui/arithmetic_side_effects.rs:408:21 | LL | _n.wrapping_rem(_n); | ^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:410:28 + --> tests/ui/arithmetic_side_effects.rs:409:28 | LL | _n.wrapping_rem_euclid(_n); | ^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:413:10 + --> tests/ui/arithmetic_side_effects.rs:412:10 | LL | _n = -_n; | ^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:414:10 + --> tests/ui/arithmetic_side_effects.rs:413:10 | LL | _n = -&_n; | ^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:415:15 + --> tests/ui/arithmetic_side_effects.rs:414:15 | LL | _custom = -_custom; | ^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:416:15 + --> tests/ui/arithmetic_side_effects.rs:415:15 | LL | _custom = -&_custom; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:425:5 + --> tests/ui/arithmetic_side_effects.rs:424:5 | LL | 1 + i; | ^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:426:5 + --> tests/ui/arithmetic_side_effects.rs:425:5 | LL | i * 2; | ^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:427:5 + --> tests/ui/arithmetic_side_effects.rs:426:5 | LL | 1 % i / 2; | ^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:428:5 + --> tests/ui/arithmetic_side_effects.rs:427:5 | LL | i - 2 + 2 - i; | ^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:429:5 + --> tests/ui/arithmetic_side_effects.rs:428:5 | LL | -i; | ^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:440:5 + --> tests/ui/arithmetic_side_effects.rs:439:5 | LL | i += 1; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:441:5 + --> tests/ui/arithmetic_side_effects.rs:440:5 | LL | i -= 1; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:442:5 + --> tests/ui/arithmetic_side_effects.rs:441:5 | LL | i *= 2; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:444:5 + --> tests/ui/arithmetic_side_effects.rs:443:5 | LL | i /= 0; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:446:5 + --> tests/ui/arithmetic_side_effects.rs:445:5 | LL | i /= var1; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:447:5 + --> tests/ui/arithmetic_side_effects.rs:446:5 | LL | i /= var2; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:449:5 + --> tests/ui/arithmetic_side_effects.rs:448:5 | LL | i %= 0; | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:451:5 + --> tests/ui/arithmetic_side_effects.rs:450:5 | LL | i %= var1; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:452:5 + --> tests/ui/arithmetic_side_effects.rs:451:5 | LL | i %= var2; | ^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:462:5 + --> tests/ui/arithmetic_side_effects.rs:461:5 | LL | 10 / a | ^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:516:9 + --> tests/ui/arithmetic_side_effects.rs:515:9 | LL | x / maybe_zero | ^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:520:9 + --> tests/ui/arithmetic_side_effects.rs:519:9 | LL | x % maybe_zero | ^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:531:5 + --> tests/ui/arithmetic_side_effects.rs:530:5 | LL | one.add_assign(1); | ^^^^^^^^^^^^^^^^^ error: arithmetic operation that can potentially result in unexpected side-effects - --> tests/ui/arithmetic_side_effects.rs:535:5 + --> tests/ui/arithmetic_side_effects.rs:534:5 | LL | one.sub_assign(1); | ^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/as_ptr_cast_mut.rs b/src/tools/clippy/tests/ui/as_ptr_cast_mut.rs index 297a53b1bbf..9e862320f4e 100644 --- a/src/tools/clippy/tests/ui/as_ptr_cast_mut.rs +++ b/src/tools/clippy/tests/ui/as_ptr_cast_mut.rs @@ -1,7 +1,7 @@ #![allow(unused)] #![warn(clippy::as_ptr_cast_mut)] #![allow(clippy::wrong_self_convention, clippy::unnecessary_cast)] -//@no-rustfix +//@no-rustfix: incorrect suggestion struct MutPtrWrapper(Vec<u8>); impl MutPtrWrapper { diff --git a/src/tools/clippy/tests/ui/asm_syntax_not_x86.rs b/src/tools/clippy/tests/ui/asm_syntax_not_x86.rs index 33cea480681..a7d29cc239e 100644 --- a/src/tools/clippy/tests/ui/asm_syntax_not_x86.rs +++ b/src/tools/clippy/tests/ui/asm_syntax_not_x86.rs @@ -1,5 +1,4 @@ -//@ignore-target-i686 -//@ignore-target-x86 +//@ignore-target: i686 x86 //@needs-asm-support #[warn(clippy::inline_asm_x86_intel_syntax)] diff --git a/src/tools/clippy/tests/ui/asm_syntax_x86.rs b/src/tools/clippy/tests/ui/asm_syntax_x86.rs index 835943b4389..5ceaceb7527 100644 --- a/src/tools/clippy/tests/ui/asm_syntax_x86.rs +++ b/src/tools/clippy/tests/ui/asm_syntax_x86.rs @@ -1,6 +1,4 @@ -//@revisions: i686 x86_64 -//@[i686] only-target-i686 -//@[x86_64] only-target-x86_64 +//@only-target: i686 x86_64 #[warn(clippy::inline_asm_x86_intel_syntax)] mod warn_intel { diff --git a/src/tools/clippy/tests/ui/asm_syntax_x86.stderr b/src/tools/clippy/tests/ui/asm_syntax_x86.stderr new file mode 100644 index 00000000000..1911ef66e23 --- /dev/null +++ b/src/tools/clippy/tests/ui/asm_syntax_x86.stderr @@ -0,0 +1,70 @@ +error: Intel x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:8:9 + | +LL | asm!(""); + | ^^^^^^^^ + | + = help: use AT&T x86 assembly syntax + = note: `-D clippy::inline-asm-x86-intel-syntax` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::inline_asm_x86_intel_syntax)]` + +error: Intel x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:10:9 + | +LL | asm!("", options()); + | ^^^^^^^^^^^^^^^^^^^ + | + = help: use AT&T x86 assembly syntax + +error: Intel x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:12:9 + | +LL | asm!("", options(nostack)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: use AT&T x86 assembly syntax + +error: Intel x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:18:5 + | +LL | global_asm!(""); + | ^^^^^^^^^^^^^^^ + | + = help: use AT&T x86 assembly syntax + +error: Intel x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:20:5 + | +LL | global_asm!("", options()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: use AT&T x86 assembly syntax + +error: AT&T x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:33:9 + | +LL | asm!("", options(att_syntax)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: use Intel x86 assembly syntax + = note: `-D clippy::inline-asm-x86-att-syntax` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::inline_asm_x86_att_syntax)]` + +error: AT&T x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:35:9 + | +LL | asm!("", options(nostack, att_syntax)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: use Intel x86 assembly syntax + +error: AT&T x86 assembly syntax used + --> tests/ui/asm_syntax_x86.rs:41:5 + | +LL | global_asm!("", options(att_syntax)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: use Intel x86 assembly syntax + +error: aborting due to 8 previous errors + diff --git a/src/tools/clippy/tests/ui/auxiliary/external_item.rs b/src/tools/clippy/tests/ui/auxiliary/external_item.rs new file mode 100644 index 00000000000..ca4bc369e44 --- /dev/null +++ b/src/tools/clippy/tests/ui/auxiliary/external_item.rs @@ -0,0 +1,7 @@ +pub struct _ExternalStruct {} + +impl _ExternalStruct { + pub fn _foo(self) {} +} + +pub fn _exernal_foo() {} diff --git a/src/tools/clippy/tests/ui/auxiliary/proc_macro_attr.rs b/src/tools/clippy/tests/ui/auxiliary/proc_macro_attr.rs index f6fdebaf252..e72d6b6cead 100644 --- a/src/tools/clippy/tests/ui/auxiliary/proc_macro_attr.rs +++ b/src/tools/clippy/tests/ui/auxiliary/proc_macro_attr.rs @@ -11,8 +11,8 @@ use quote::{quote, quote_spanned}; use syn::spanned::Spanned; use syn::token::Star; use syn::{ - parse_macro_input, parse_quote, FnArg, ImplItem, ItemFn, ItemImpl, ItemStruct, ItemTrait, Lifetime, Pat, PatIdent, - PatType, Signature, TraitItem, Type, Visibility, + FnArg, ImplItem, ItemFn, ItemImpl, ItemStruct, ItemTrait, Lifetime, Pat, PatIdent, PatType, Signature, TraitItem, + Type, Visibility, parse_macro_input, parse_quote, }; #[proc_macro_attribute] diff --git a/src/tools/clippy/tests/ui/auxiliary/proc_macro_derive.rs b/src/tools/clippy/tests/ui/auxiliary/proc_macro_derive.rs index 4c3df472269..bd90042c1da 100644 --- a/src/tools/clippy/tests/ui/auxiliary/proc_macro_derive.rs +++ b/src/tools/clippy/tests/ui/auxiliary/proc_macro_derive.rs @@ -5,7 +5,7 @@ extern crate proc_macro; -use proc_macro::{quote, Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree}; +use proc_macro::{Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree, quote}; #[proc_macro_derive(DeriveSomething)] pub fn derive(_: TokenStream) -> TokenStream { diff --git a/src/tools/clippy/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs b/src/tools/clippy/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs index 79e8eff3aa1..3d6f164d358 100644 --- a/src/tools/clippy/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs +++ b/src/tools/clippy/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs @@ -1,5 +1,5 @@ extern crate proc_macro; -use proc_macro::{token_stream, Delimiter, Group, Ident, Span, TokenStream, TokenTree}; +use proc_macro::{Delimiter, Group, Ident, Span, TokenStream, TokenTree, token_stream}; fn read_ident(iter: &mut token_stream::IntoIter) -> Ident { match iter.next() { diff --git a/src/tools/clippy/tests/ui/auxiliary/proc_macros.rs b/src/tools/clippy/tests/ui/auxiliary/proc_macros.rs index ed7412f7c40..1a2a4ec2311 100644 --- a/src/tools/clippy/tests/ui/auxiliary/proc_macros.rs +++ b/src/tools/clippy/tests/ui/auxiliary/proc_macros.rs @@ -5,9 +5,9 @@ extern crate proc_macro; use core::mem; -use proc_macro::token_stream::IntoIter; use proc_macro::Delimiter::{self, Brace, Parenthesis}; use proc_macro::Spacing::{self, Alone, Joint}; +use proc_macro::token_stream::IntoIter; use proc_macro::{Group, Ident, Literal, Punct, Span, TokenStream, TokenTree as TT}; use syn::spanned::Spanned; diff --git a/src/tools/clippy/tests/ui/borrow_box.fixed b/src/tools/clippy/tests/ui/borrow_box.fixed new file mode 100644 index 00000000000..08ea60583ea --- /dev/null +++ b/src/tools/clippy/tests/ui/borrow_box.fixed @@ -0,0 +1,133 @@ +#![deny(clippy::borrowed_box)] +#![allow(dead_code, unused_variables)] +#![allow( + clippy::uninlined_format_args, + clippy::disallowed_names, + clippy::needless_pass_by_ref_mut, + clippy::needless_lifetimes +)] + +use std::fmt::Display; + +pub fn test1(foo: &mut Box<bool>) { + // Although this function could be changed to "&mut bool", + // avoiding the Box, mutable references to boxes are not + // flagged by this lint. + // + // This omission is intentional: By passing a mutable Box, + // the memory location of the pointed-to object could be + // modified. By passing a mutable reference, the contents + // could change, but not the location. + println!("{:?}", foo) +} + +pub fn test2() { + let foo: &bool; + //~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +} + +struct Test3<'a> { + foo: &'a bool, + //~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +} + +trait Test4 { + fn test4(a: &bool); + //~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +} + +use std::any::Any; + +pub fn test5(foo: &mut Box<dyn Any>) { + println!("{:?}", foo) +} + +pub fn test6() { + let foo: &Box<dyn Any>; +} + +struct Test7<'a> { + foo: &'a Box<dyn Any>, +} + +trait Test8 { + fn test8(a: &Box<dyn Any>); +} + +impl<'a> Test8 for Test7<'a> { + fn test8(a: &Box<dyn Any>) { + unimplemented!(); + } +} + +pub fn test9(foo: &mut Box<dyn Any + Send + Sync>) { + let _ = foo; +} + +pub fn test10() { + let foo: &Box<dyn Any + Send + 'static>; +} + +struct Test11<'a> { + foo: &'a Box<dyn Any + Send>, +} + +trait Test12 { + fn test4(a: &Box<dyn Any + 'static>); +} + +impl<'a> Test12 for Test11<'a> { + fn test4(a: &Box<dyn Any + 'static>) { + unimplemented!(); + } +} + +pub fn test13(boxed_slice: &mut Box<[i32]>) { + // Unconditionally replaces the box pointer. + // + // This cannot be accomplished if "&mut [i32]" is passed, + // and provides a test case where passing a reference to + // a Box is valid. + let mut data = vec![12]; + *boxed_slice = data.into_boxed_slice(); +} + +// The suggestion should include proper parentheses to avoid a syntax error. +pub fn test14(_display: &dyn Display) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +pub fn test15(_display: &(dyn Display + Send)) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +pub fn test16<'a>(_display: &'a (dyn Display + 'a)) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` + +pub fn test17(_display: &impl Display) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +pub fn test18(_display: &(impl Display + Send)) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +pub fn test19<'a>(_display: &'a (impl Display + 'a)) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` + +// This exists only to check what happens when parentheses are already present. +// Even though the current implementation doesn't put extra parentheses, +// it's fine that unnecessary parentheses appear in the future for some reason. +pub fn test20(_display: &(dyn Display + Send)) {} +//~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` + +#[allow(clippy::borrowed_box)] +trait Trait { + fn f(b: &Box<bool>); +} + +// Trait impls are not linted +impl Trait for () { + fn f(_: &Box<bool>) {} +} + +fn main() { + test1(&mut Box::new(false)); + test2(); + test5(&mut (Box::new(false) as Box<dyn Any>)); + test6(); + test9(&mut (Box::new(false) as Box<dyn Any + Send + Sync>)); + test10(); +} diff --git a/src/tools/clippy/tests/ui/borrow_box.rs b/src/tools/clippy/tests/ui/borrow_box.rs index e9994aac845..b55de1701da 100644 --- a/src/tools/clippy/tests/ui/borrow_box.rs +++ b/src/tools/clippy/tests/ui/borrow_box.rs @@ -3,9 +3,9 @@ #![allow( clippy::uninlined_format_args, clippy::disallowed_names, - clippy::needless_pass_by_ref_mut + clippy::needless_pass_by_ref_mut, + clippy::needless_lifetimes )] -//@no-rustfix use std::fmt::Display; @@ -36,12 +36,6 @@ trait Test4 { //~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` } -impl<'a> Test4 for Test3<'a> { - fn test4(a: &Box<bool>) { - unimplemented!(); - } -} - use std::any::Any; pub fn test5(foo: &mut Box<dyn Any>) { @@ -119,6 +113,16 @@ pub fn test19<'a>(_display: &'a Box<impl Display + 'a>) {} pub fn test20(_display: &Box<(dyn Display + Send)>) {} //~^ ERROR: you seem to be trying to use `&Box<T>`. Consider using just `&T` +#[allow(clippy::borrowed_box)] +trait Trait { + fn f(b: &Box<bool>); +} + +// Trait impls are not linted +impl Trait for () { + fn f(_: &Box<bool>) {} +} + fn main() { test1(&mut Box::new(false)); test2(); diff --git a/src/tools/clippy/tests/ui/borrow_box.stderr b/src/tools/clippy/tests/ui/borrow_box.stderr index 34e8f11dfd7..6f80f86c3b3 100644 --- a/src/tools/clippy/tests/ui/borrow_box.stderr +++ b/src/tools/clippy/tests/ui/borrow_box.stderr @@ -23,43 +23,43 @@ LL | fn test4(a: &Box<bool>); | ^^^^^^^^^^ help: try: `&bool` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:102:25 + --> tests/ui/borrow_box.rs:96:25 | LL | pub fn test14(_display: &Box<dyn Display>) {} | ^^^^^^^^^^^^^^^^^ help: try: `&dyn Display` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:104:25 + --> tests/ui/borrow_box.rs:98:25 | LL | pub fn test15(_display: &Box<dyn Display + Send>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&(dyn Display + Send)` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:106:29 + --> tests/ui/borrow_box.rs:100:29 | LL | pub fn test16<'a>(_display: &'a Box<dyn Display + 'a>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&'a (dyn Display + 'a)` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:109:25 + --> tests/ui/borrow_box.rs:103:25 | LL | pub fn test17(_display: &Box<impl Display>) {} | ^^^^^^^^^^^^^^^^^^ help: try: `&impl Display` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:111:25 + --> tests/ui/borrow_box.rs:105:25 | LL | pub fn test18(_display: &Box<impl Display + Send>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&(impl Display + Send)` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:113:29 + --> tests/ui/borrow_box.rs:107:29 | LL | pub fn test19<'a>(_display: &'a Box<impl Display + 'a>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&'a (impl Display + 'a)` error: you seem to be trying to use `&Box<T>`. Consider using just `&T` - --> tests/ui/borrow_box.rs:119:25 + --> tests/ui/borrow_box.rs:113:25 | LL | pub fn test20(_display: &Box<(dyn Display + Send)>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&(dyn Display + Send)` diff --git a/src/tools/clippy/tests/ui/borrow_interior_mutable_const/others.rs b/src/tools/clippy/tests/ui/borrow_interior_mutable_const/others.rs index 452d1b19813..de220505c3e 100644 --- a/src/tools/clippy/tests/ui/borrow_interior_mutable_const/others.rs +++ b/src/tools/clippy/tests/ui/borrow_interior_mutable_const/others.rs @@ -5,8 +5,8 @@ use std::borrow::Cow; use std::cell::{Cell, UnsafeCell}; use std::fmt::Display; -use std::sync::atomic::{AtomicUsize, Ordering}; use std::sync::Once; +use std::sync::atomic::{AtomicUsize, Ordering}; const ATOMIC: AtomicUsize = AtomicUsize::new(5); const CELL: Cell<usize> = Cell::new(6); diff --git a/src/tools/clippy/tests/ui/boxed_local.rs b/src/tools/clippy/tests/ui/boxed_local.rs index fbd9e12fc18..e2c27e585fc 100644 --- a/src/tools/clippy/tests/ui/boxed_local.rs +++ b/src/tools/clippy/tests/ui/boxed_local.rs @@ -3,7 +3,8 @@ clippy::needless_pass_by_value, clippy::unused_unit, clippy::redundant_clone, - clippy::match_single_binding + clippy::match_single_binding, + clippy::needless_lifetimes )] #![warn(clippy::boxed_local)] diff --git a/src/tools/clippy/tests/ui/boxed_local.stderr b/src/tools/clippy/tests/ui/boxed_local.stderr index 7710233fa4d..d3156c820b2 100644 --- a/src/tools/clippy/tests/ui/boxed_local.stderr +++ b/src/tools/clippy/tests/ui/boxed_local.stderr @@ -1,5 +1,5 @@ error: local variable doesn't need to be boxed here - --> tests/ui/boxed_local.rs:39:13 + --> tests/ui/boxed_local.rs:40:13 | LL | fn warn_arg(x: Box<A>) { | ^ @@ -8,19 +8,19 @@ LL | fn warn_arg(x: Box<A>) { = help: to override `-D warnings` add `#[allow(clippy::boxed_local)]` error: local variable doesn't need to be boxed here - --> tests/ui/boxed_local.rs:122:12 + --> tests/ui/boxed_local.rs:123:12 | LL | pub fn new(_needs_name: Box<PeekableSeekable<&()>>) -> () {} | ^^^^^^^^^^^ error: local variable doesn't need to be boxed here - --> tests/ui/boxed_local.rs:187:44 + --> tests/ui/boxed_local.rs:188:44 | LL | fn default_impl_x(self: Box<Self>, x: Box<u32>) -> u32 { | ^ error: local variable doesn't need to be boxed here - --> tests/ui/boxed_local.rs:195:16 + --> tests/ui/boxed_local.rs:196:16 | LL | fn foo(x: Box<u32>) {} | ^ diff --git a/src/tools/clippy/tests/ui/bytecount.rs b/src/tools/clippy/tests/ui/bytecount.rs index 3794fc5d441..f3b02fda8a8 100644 --- a/src/tools/clippy/tests/ui/bytecount.rs +++ b/src/tools/clippy/tests/ui/bytecount.rs @@ -1,4 +1,4 @@ -//@no-rustfix +//@no-rustfix: suggests external crate #![allow(clippy::needless_borrow, clippy::useless_vec)] diff --git a/src/tools/clippy/tests/ui/cast_alignment.rs b/src/tools/clippy/tests/ui/cast_alignment.rs index 98ef5e36f94..72f5d4268cc 100644 --- a/src/tools/clippy/tests/ui/cast_alignment.rs +++ b/src/tools/clippy/tests/ui/cast_alignment.rs @@ -2,16 +2,16 @@ #![feature(rustc_private)] #![feature(core_intrinsics)] -extern crate libc; - -#[warn(clippy::cast_ptr_alignment)] -#[allow( +#![warn(clippy::cast_ptr_alignment)] +#![allow( clippy::no_effect, clippy::unnecessary_operation, clippy::cast_lossless, clippy::borrow_as_ptr )] +extern crate libc; + fn main() { /* These should be warned against */ diff --git a/src/tools/clippy/tests/ui/cmp_owned/without_suggestion.rs b/src/tools/clippy/tests/ui/cmp_owned/without_suggestion.rs index ec45d635c17..913aab72747 100644 --- a/src/tools/clippy/tests/ui/cmp_owned/without_suggestion.rs +++ b/src/tools/clippy/tests/ui/cmp_owned/without_suggestion.rs @@ -1,5 +1,5 @@ -#[allow(clippy::unnecessary_operation)] -#[allow(clippy::implicit_clone)] +#![allow(clippy::unnecessary_operation)] +#![allow(clippy::implicit_clone)] fn main() { let x = &Baz; diff --git a/src/tools/clippy/tests/ui/collapsible_else_if.fixed b/src/tools/clippy/tests/ui/collapsible_else_if.fixed index 3b410b2f17b..c2d76146c64 100644 --- a/src/tools/clippy/tests/ui/collapsible_else_if.fixed +++ b/src/tools/clippy/tests/ui/collapsible_else_if.fixed @@ -1,9 +1,7 @@ #![allow(clippy::assertions_on_constants, clippy::equatable_if_let, clippy::needless_if)] +#![warn(clippy::collapsible_if, clippy::collapsible_else_if)] #[rustfmt::skip] -#[warn(clippy::collapsible_if)] -#[warn(clippy::collapsible_else_if)] - fn main() { let x = "hello"; let y = "world"; @@ -76,7 +74,6 @@ fn main() { } #[rustfmt::skip] -#[allow(dead_code)] fn issue_7318() { if true { println!("I've been resolved!") }else if false {} diff --git a/src/tools/clippy/tests/ui/collapsible_else_if.rs b/src/tools/clippy/tests/ui/collapsible_else_if.rs index 772ef6f9fc6..3579e46cd44 100644 --- a/src/tools/clippy/tests/ui/collapsible_else_if.rs +++ b/src/tools/clippy/tests/ui/collapsible_else_if.rs @@ -1,9 +1,7 @@ #![allow(clippy::assertions_on_constants, clippy::equatable_if_let, clippy::needless_if)] +#![warn(clippy::collapsible_if, clippy::collapsible_else_if)] #[rustfmt::skip] -#[warn(clippy::collapsible_if)] -#[warn(clippy::collapsible_else_if)] - fn main() { let x = "hello"; let y = "world"; @@ -90,7 +88,6 @@ fn main() { } #[rustfmt::skip] -#[allow(dead_code)] fn issue_7318() { if true { println!("I've been resolved!") }else{ diff --git a/src/tools/clippy/tests/ui/collapsible_else_if.stderr b/src/tools/clippy/tests/ui/collapsible_else_if.stderr index dc19d90b4d1..395c2dcf68d 100644 --- a/src/tools/clippy/tests/ui/collapsible_else_if.stderr +++ b/src/tools/clippy/tests/ui/collapsible_else_if.stderr @@ -1,5 +1,5 @@ error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:13:12 + --> tests/ui/collapsible_else_if.rs:11:12 | LL | } else { | ____________^ @@ -19,7 +19,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:21:12 + --> tests/ui/collapsible_else_if.rs:19:12 | LL | } else { | ____________^ @@ -37,7 +37,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:29:12 + --> tests/ui/collapsible_else_if.rs:27:12 | LL | } else { | ____________^ @@ -60,7 +60,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:40:12 + --> tests/ui/collapsible_else_if.rs:38:12 | LL | } else { | ____________^ @@ -83,7 +83,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:51:12 + --> tests/ui/collapsible_else_if.rs:49:12 | LL | } else { | ____________^ @@ -106,7 +106,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:62:12 + --> tests/ui/collapsible_else_if.rs:60:12 | LL | } else { | ____________^ @@ -129,7 +129,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:73:12 + --> tests/ui/collapsible_else_if.rs:71:12 | LL | } else { | ____________^ @@ -152,7 +152,7 @@ LL + } | error: this `else { if .. }` block can be collapsed - --> tests/ui/collapsible_else_if.rs:96:10 + --> tests/ui/collapsible_else_if.rs:93:10 | LL | }else{ | __________^ diff --git a/src/tools/clippy/tests/ui/comparison_to_empty.fixed b/src/tools/clippy/tests/ui/comparison_to_empty.fixed index e102b13a761..a2a3dd9086d 100644 --- a/src/tools/clippy/tests/ui/comparison_to_empty.fixed +++ b/src/tools/clippy/tests/ui/comparison_to_empty.fixed @@ -33,4 +33,12 @@ fn main() { if let [0] = &*s && s == [0] {} + + // Also lint the `PartialEq` methods + let s = String::new(); + let _ = s.is_empty(); + let _ = !s.is_empty(); + let v = vec![0]; + let _ = v.is_empty(); + let _ = !v.is_empty(); } diff --git a/src/tools/clippy/tests/ui/comparison_to_empty.rs b/src/tools/clippy/tests/ui/comparison_to_empty.rs index 69a6c967d38..7c5689a4bbe 100644 --- a/src/tools/clippy/tests/ui/comparison_to_empty.rs +++ b/src/tools/clippy/tests/ui/comparison_to_empty.rs @@ -33,4 +33,12 @@ fn main() { if let [0] = &*s && s == [0] {} + + // Also lint the `PartialEq` methods + let s = String::new(); + let _ = s.eq(""); + let _ = s.ne(""); + let v = vec![0]; + let _ = v.eq(&[]); + let _ = v.ne(&[]); } diff --git a/src/tools/clippy/tests/ui/comparison_to_empty.stderr b/src/tools/clippy/tests/ui/comparison_to_empty.stderr index 6b027459ed3..2ee0efc7dbb 100644 --- a/src/tools/clippy/tests/ui/comparison_to_empty.stderr +++ b/src/tools/clippy/tests/ui/comparison_to_empty.stderr @@ -55,5 +55,29 @@ error: comparison to empty slice LL | && s == [] | ^^^^^^^ help: using `is_empty` is clearer and more explicit: `s.is_empty()` -error: aborting due to 9 previous errors +error: comparison to empty slice + --> tests/ui/comparison_to_empty.rs:39:13 + | +LL | let _ = s.eq(""); + | ^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s.is_empty()` + +error: comparison to empty slice + --> tests/ui/comparison_to_empty.rs:40:13 + | +LL | let _ = s.ne(""); + | ^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!s.is_empty()` + +error: comparison to empty slice + --> tests/ui/comparison_to_empty.rs:42:13 + | +LL | let _ = v.eq(&[]); + | ^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `v.is_empty()` + +error: comparison to empty slice + --> tests/ui/comparison_to_empty.rs:43:13 + | +LL | let _ = v.ne(&[]); + | ^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!v.is_empty()` + +error: aborting due to 13 previous errors diff --git a/src/tools/clippy/tests/ui/crashes/associated-constant-ice.rs b/src/tools/clippy/tests/ui/crashes/associated-constant-ice.rs index 948deba3ea6..fec16671eeb 100644 --- a/src/tools/clippy/tests/ui/crashes/associated-constant-ice.rs +++ b/src/tools/clippy/tests/ui/crashes/associated-constant-ice.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/1698 +// Test for https://github.com/rust-lang/rust-clippy/issues/1698 pub trait Trait { const CONSTANT: u8; diff --git a/src/tools/clippy/tests/ui/crashes/cc_seme.rs b/src/tools/clippy/tests/ui/crashes/cc_seme.rs index 98588be9cf8..98897d6d7aa 100644 --- a/src/tools/clippy/tests/ui/crashes/cc_seme.rs +++ b/src/tools/clippy/tests/ui/crashes/cc_seme.rs @@ -1,6 +1,4 @@ -#[allow(dead_code)] - -/// Test for https://github.com/rust-lang/rust-clippy/issues/478 +// Test for https://github.com/rust-lang/rust-clippy/issues/478 enum Baz { One, diff --git a/src/tools/clippy/tests/ui/crashes/ice-11230.rs b/src/tools/clippy/tests/ui/crashes/ice-11230.rs index 5761882273e..94044e9435e 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-11230.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-11230.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/11230 +// Test for https://github.com/rust-lang/rust-clippy/issues/11230 fn main() { const A: &[for<'a> fn(&'a ())] = &[]; diff --git a/src/tools/clippy/tests/ui/crashes/ice-1588.rs b/src/tools/clippy/tests/ui/crashes/ice-1588.rs index b0a3d11bce4..9ec093721c1 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-1588.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-1588.rs @@ -1,6 +1,6 @@ #![allow(clippy::all)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/1588 +// Test for https://github.com/rust-lang/rust-clippy/issues/1588 fn main() { match 1 { diff --git a/src/tools/clippy/tests/ui/crashes/ice-1969.rs b/src/tools/clippy/tests/ui/crashes/ice-1969.rs index 96a8fe6c24d..eb901c76729 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-1969.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-1969.rs @@ -1,6 +1,6 @@ #![allow(clippy::all)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/1969 +// Test for https://github.com/rust-lang/rust-clippy/issues/1969 fn main() {} diff --git a/src/tools/clippy/tests/ui/crashes/ice-2499.rs b/src/tools/clippy/tests/ui/crashes/ice-2499.rs index 45b3b1869dd..732f331ad14 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-2499.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-2499.rs @@ -1,8 +1,8 @@ #![allow(dead_code, clippy::char_lit_as_u8, clippy::needless_bool)] -/// Should not trigger an ICE in `SpanlessHash` / `consts::constant` -/// -/// Issue: https://github.com/rust-lang/rust-clippy/issues/2499 +// Should not trigger an ICE in `SpanlessHash` / `consts::constant` +// +// Issue: https://github.com/rust-lang/rust-clippy/issues/2499 fn f(s: &[u8]) -> bool { let t = s[0] as char; diff --git a/src/tools/clippy/tests/ui/crashes/ice-2594.rs b/src/tools/clippy/tests/ui/crashes/ice-2594.rs index 3f3986b6fc6..dddf860bd17 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-2594.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-2594.rs @@ -3,7 +3,6 @@ /// Should not trigger an ICE in `SpanlessHash` / `consts::constant` /// /// Issue: https://github.com/rust-lang/rust-clippy/issues/2594 - fn spanless_hash_ice() { let txt = "something"; let empty_header: [u8; 1] = [1; 1]; diff --git a/src/tools/clippy/tests/ui/crashes/ice-2727.rs b/src/tools/clippy/tests/ui/crashes/ice-2727.rs index 56024abc8f5..59fb9b04b86 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-2727.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-2727.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/2727 +// Test for https://github.com/rust-lang/rust-clippy/issues/2727 pub fn f(new: fn()) { new(); diff --git a/src/tools/clippy/tests/ui/crashes/ice-2760.rs b/src/tools/clippy/tests/ui/crashes/ice-2760.rs index 61ef2480498..5f7d91abf99 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-2760.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-2760.rs @@ -5,10 +5,10 @@ dead_code )] -/// This should not compile-fail with: -/// -/// error[E0277]: the trait bound `T: Foo` is not satisfied -// See rust-lang/rust-clippy#2760. +// This should not compile-fail with: +// +// error[E0277]: the trait bound `T: Foo` is not satisfied +// See https://github.com/rust-lang/rust-clippy/issues/2760 trait Foo { type Bar; diff --git a/src/tools/clippy/tests/ui/crashes/ice-2862.rs b/src/tools/clippy/tests/ui/crashes/ice-2862.rs index 8326e3663b0..2573b571f55 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-2862.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-2862.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/2862 +// Test for https://github.com/rust-lang/rust-clippy/issues/2862 pub trait FooMap { fn map<B, F: Fn() -> B>(&self, f: F) -> B; diff --git a/src/tools/clippy/tests/ui/crashes/ice-2865.rs b/src/tools/clippy/tests/ui/crashes/ice-2865.rs index c6298139601..28363707acc 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-2865.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-2865.rs @@ -1,6 +1,6 @@ #![allow(dead_code, clippy::extra_unused_lifetimes)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/2865 +// Test for https://github.com/rust-lang/rust-clippy/issues/2865 struct Ice { size: String, diff --git a/src/tools/clippy/tests/ui/crashes/ice-3151.rs b/src/tools/clippy/tests/ui/crashes/ice-3151.rs index 268ba86fc7a..f88a26cb485 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-3151.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-3151.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/3151 +// Test for https://github.com/rust-lang/rust-clippy/issues/3151 #[derive(Clone)] pub struct HashMap<V, S> { diff --git a/src/tools/clippy/tests/ui/crashes/ice-3462.rs b/src/tools/clippy/tests/ui/crashes/ice-3462.rs index 21cd9d337cd..ccd617e305d 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-3462.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-3462.rs @@ -2,7 +2,7 @@ #![allow(clippy::disallowed_names, clippy::equatable_if_let, clippy::needless_if)] #![allow(unused)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/3462 +// Test for https://github.com/rust-lang/rust-clippy/issues/3462 enum Foo { Bar, diff --git a/src/tools/clippy/tests/ui/crashes/ice-3747.rs b/src/tools/clippy/tests/ui/crashes/ice-3747.rs index cdf018cbc88..44b1d7ed1b2 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-3747.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-3747.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/3747 +// Test for https://github.com/rust-lang/rust-clippy/issues/3747 macro_rules! a { ( $pub:tt $($attr:tt)* ) => { diff --git a/src/tools/clippy/tests/ui/crashes/ice-3969.rs b/src/tools/clippy/tests/ui/crashes/ice-3969.rs index d5676cbd91d..ac09ce08753 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-3969.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-3969.rs @@ -1,7 +1,7 @@ // https://github.com/rust-lang/rust-clippy/issues/3969 // used to crash: error: internal compiler error: // src/librustc_traits/normalize_erasing_regions.rs:43: could not fully normalize `<i32 as -// std::iter::Iterator>::Item test from rustc ./ui/trivial-bounds/trivial-bounds-inconsistent.rs +// std::iter::Iterator>::Item` test from rustc ./ui/trivial-bounds/trivial-bounds-inconsistent.rs // Check that tautalogically false bounds are accepted, and are used // in type inference. @@ -18,7 +18,7 @@ struct Dst<X: ?Sized> { struct TwoStrs(str, str) where str: Sized; -//~^ ERROR: trait bound str: std::marker::Sized does not depend on any type or lifetim +//~^ ERROR: trait bound str: std::marker::Sized does not depend on any type or lifetime //~| NOTE: `-D trivial-bounds` implied by `-D warnings` fn unsized_local() diff --git a/src/tools/clippy/tests/ui/crashes/ice-6251.rs b/src/tools/clippy/tests/ui/crashes/ice-6251.rs index a81137a6465..73e919b6dd2 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-6251.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-6251.rs @@ -1,5 +1,5 @@ // originally from glacier/fixed/77329.rs -// assertion failed: `(left == right) ; different DefIds +// assertion failed: `(left == right)` ; different DefIds //@no-rustfix fn bug<T>() -> impl Iterator<Item = [(); { |x: [u8]| x }]> { std::iter::empty() diff --git a/src/tools/clippy/tests/ui/crashes/ice-6251.stderr b/src/tools/clippy/tests/ui/crashes/ice-6251.stderr index 82e7d723586..77c3e6288ce 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-6251.stderr +++ b/src/tools/clippy/tests/ui/crashes/ice-6251.stderr @@ -1,8 +1,8 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> tests/ui/crashes/ice-6251.rs:4:45 + --> tests/ui/crashes/ice-6251.rs:4:48 | LL | fn bug<T>() -> impl Iterator<Item = [(); { |x: [u8]| x }]> { - | ^ doesn't have a size known at compile-time + | ^^^^ doesn't have a size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `[u8]` = help: unsized fn params are gated as an unstable feature diff --git a/src/tools/clippy/tests/ui/crashes/ice-700.rs b/src/tools/clippy/tests/ui/crashes/ice-700.rs index 0cbceedbd6b..5e004b94330 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-700.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-700.rs @@ -1,6 +1,6 @@ #![deny(clippy::all)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/700 +// Test for https://github.com/rust-lang/rust-clippy/issues/700 fn core() {} diff --git a/src/tools/clippy/tests/ui/crashes/ice-7410.rs b/src/tools/clippy/tests/ui/crashes/ice-7410.rs index a2683b3ce34..ccf6d7ff94f 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-7410.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-7410.rs @@ -1,6 +1,5 @@ //@compile-flags: -Clink-arg=-nostartfiles -//@ignore-target-apple -//@ignore-target-windows +//@ignore-target: apple windows #![feature(lang_items, start, libc)] #![no_std] diff --git a/src/tools/clippy/tests/ui/crashes/ice_exact_size.rs b/src/tools/clippy/tests/ui/crashes/ice_exact_size.rs index 30e4b11ec0b..c0671eaff14 100644 --- a/src/tools/clippy/tests/ui/crashes/ice_exact_size.rs +++ b/src/tools/clippy/tests/ui/crashes/ice_exact_size.rs @@ -1,6 +1,6 @@ #![deny(clippy::all)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/1336 +// Test for https://github.com/rust-lang/rust-clippy/issues/1336 #[allow(dead_code)] struct Foo; diff --git a/src/tools/clippy/tests/ui/crashes/if_same_then_else.rs b/src/tools/clippy/tests/ui/crashes/if_same_then_else.rs index 2f913292995..a900fe5e6bc 100644 --- a/src/tools/clippy/tests/ui/crashes/if_same_then_else.rs +++ b/src/tools/clippy/tests/ui/crashes/if_same_then_else.rs @@ -1,7 +1,7 @@ #![allow(clippy::comparison_chain)] #![deny(clippy::if_same_then_else)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/2426 +// Test for https://github.com/rust-lang/rust-clippy/issues/2426 fn main() {} diff --git a/src/tools/clippy/tests/ui/crashes/inherent_impl.rs b/src/tools/clippy/tests/ui/crashes/inherent_impl.rs index aeb27b5ba8c..800a5a383f6 100644 --- a/src/tools/clippy/tests/ui/crashes/inherent_impl.rs +++ b/src/tools/clippy/tests/ui/crashes/inherent_impl.rs @@ -1,6 +1,6 @@ #![deny(clippy::multiple_inherent_impl)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/4578 +// Test for https://github.com/rust-lang/rust-clippy/issues/4578 macro_rules! impl_foo { ($struct:ident) => { diff --git a/src/tools/clippy/tests/ui/crashes/issue-825.rs b/src/tools/clippy/tests/ui/crashes/issue-825.rs index 05696e3d7d5..e8b455a0ec6 100644 --- a/src/tools/clippy/tests/ui/crashes/issue-825.rs +++ b/src/tools/clippy/tests/ui/crashes/issue-825.rs @@ -1,6 +1,6 @@ #![allow(warnings)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/825 +// Test for https://github.com/rust-lang/rust-clippy/issues/825 // this should compile in a reasonable amount of time fn rust_type_id(name: &str) { diff --git a/src/tools/clippy/tests/ui/crashes/match_same_arms_const.rs b/src/tools/clippy/tests/ui/crashes/match_same_arms_const.rs index 94c939665e6..626179c0015 100644 --- a/src/tools/clippy/tests/ui/crashes/match_same_arms_const.rs +++ b/src/tools/clippy/tests/ui/crashes/match_same_arms_const.rs @@ -1,6 +1,6 @@ #![deny(clippy::match_same_arms)] -/// Test for https://github.com/rust-lang/rust-clippy/issues/2427 +// Test for https://github.com/rust-lang/rust-clippy/issues/2427 const PRICE_OF_SWEETS: u32 = 5; const PRICE_OF_KINDNESS: u32 = 0; diff --git a/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.fixed b/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.fixed index 8bd9eea75bb..837069cae6d 100644 --- a/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.fixed +++ b/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.fixed @@ -9,7 +9,7 @@ struct Baz<'a> { bar: &'a Bar, } -impl<'a> Foo for Baz<'a> {} +impl Foo for Baz<'_> {} impl Bar { fn baz(&self) -> impl Foo + '_ { diff --git a/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.stderr b/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.stderr index 3a2d1f4410e..bed6aab25c4 100644 --- a/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.stderr +++ b/src/tools/clippy/tests/ui/crashes/needless_lifetimes_impl_trait.stderr @@ -1,8 +1,8 @@ error: the following explicit lifetimes could be elided: 'a - --> tests/ui/crashes/needless_lifetimes_impl_trait.rs:15:12 + --> tests/ui/crashes/needless_lifetimes_impl_trait.rs:12:6 | -LL | fn baz<'a>(&'a self) -> impl Foo + 'a { - | ^^ ^^ ^^ +LL | impl<'a> Foo for Baz<'a> {} + | ^^ ^^ | note: the lint level is defined here --> tests/ui/crashes/needless_lifetimes_impl_trait.rs:1:9 @@ -11,9 +11,21 @@ LL | #![deny(clippy::needless_lifetimes)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: elide the lifetimes | +LL - impl<'a> Foo for Baz<'a> {} +LL + impl Foo for Baz<'_> {} + | + +error: the following explicit lifetimes could be elided: 'a + --> tests/ui/crashes/needless_lifetimes_impl_trait.rs:15:12 + | +LL | fn baz<'a>(&'a self) -> impl Foo + 'a { + | ^^ ^^ ^^ + | +help: elide the lifetimes + | LL - fn baz<'a>(&'a self) -> impl Foo + 'a { LL + fn baz(&self) -> impl Foo + '_ { | -error: aborting due to 1 previous error +error: aborting due to 2 previous errors diff --git a/src/tools/clippy/tests/ui/crashes/needless_pass_by_value-w-late-bound.stderr b/src/tools/clippy/tests/ui/crashes/needless_pass_by_value-w-late-bound.stderr index 90076d4338a..28479570006 100644 --- a/src/tools/clippy/tests/ui/crashes/needless_pass_by_value-w-late-bound.stderr +++ b/src/tools/clippy/tests/ui/crashes/needless_pass_by_value-w-late-bound.stderr @@ -4,7 +4,7 @@ error: this argument is passed by value, but not consumed in the function body LL | fn test(x: Foo<'_>) {} | ^^^^^^^ help: consider taking a reference instead: `&Foo<'_>` | -help: consider marking this type as `Copy` +help: or consider marking this type as `Copy` --> tests/ui/crashes/needless_pass_by_value-w-late-bound.rs:5:1 | LL | struct Foo<'a>(&'a [(); 100]); diff --git a/src/tools/clippy/tests/ui/crashes/returns.rs b/src/tools/clippy/tests/ui/crashes/returns.rs index 8021ed4607d..91cdb5306c8 100644 --- a/src/tools/clippy/tests/ui/crashes/returns.rs +++ b/src/tools/clippy/tests/ui/crashes/returns.rs @@ -1,4 +1,4 @@ -/// Test for https://github.com/rust-lang/rust-clippy/issues/1346 +// Test for https://github.com/rust-lang/rust-clippy/issues/1346 #[deny(warnings)] fn cfg_return() -> i32 { diff --git a/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs b/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs index aa76688d801..5d853d97bc3 100644 --- a/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs +++ b/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs @@ -1,4 +1,4 @@ -//@ignore-target-apple +//@ignore-target: apple #![feature(rustc_attrs)] diff --git a/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs b/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs index 32eba969592..9e5b2a48903 100644 --- a/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs +++ b/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs @@ -1,5 +1,5 @@ //@compile-flags: -Clink-arg=-nostartfiles -//@ignore-target-apple +//@ignore-target: apple #![feature(lang_items, start, libc)] #![no_std] diff --git a/src/tools/clippy/tests/ui/declare_interior_mutable_const/others.rs b/src/tools/clippy/tests/ui/declare_interior_mutable_const/others.rs index 9dafad8b784..0dccf18c493 100644 --- a/src/tools/clippy/tests/ui/declare_interior_mutable_const/others.rs +++ b/src/tools/clippy/tests/ui/declare_interior_mutable_const/others.rs @@ -4,8 +4,8 @@ use std::borrow::Cow; use std::cell::Cell; use std::fmt::Display; use std::ptr; -use std::sync::atomic::AtomicUsize; use std::sync::Once; +use std::sync::atomic::AtomicUsize; const ATOMIC: AtomicUsize = AtomicUsize::new(5); //~ ERROR: interior mutable const CELL: Cell<usize> = Cell::new(6); //~ ERROR: interior mutable diff --git a/src/tools/clippy/tests/ui/def_id_nocore.rs b/src/tools/clippy/tests/ui/def_id_nocore.rs index 190d636ebf3..c9650312db8 100644 --- a/src/tools/clippy/tests/ui/def_id_nocore.rs +++ b/src/tools/clippy/tests/ui/def_id_nocore.rs @@ -1,4 +1,4 @@ -//@ignore-target-apple +//@ignore-target: apple #![feature(no_core, lang_items, start)] #![no_core] diff --git a/src/tools/clippy/tests/ui/deref_addrof_double_trigger.rs b/src/tools/clippy/tests/ui/deref_addrof_double_trigger.rs index 32582a3a8bf..6f997875777 100644 --- a/src/tools/clippy/tests/ui/deref_addrof_double_trigger.rs +++ b/src/tools/clippy/tests/ui/deref_addrof_double_trigger.rs @@ -1,5 +1,5 @@ -// This test can't work with run-rustfix because it needs two passes of test+fix -//@no-rustfix +//@no-rustfix: this test can't work with run-rustfix because it needs two passes of test+fix + #[warn(clippy::deref_addrof)] #[allow(unused_variables, unused_mut)] fn main() { diff --git a/src/tools/clippy/tests/ui/derive.rs b/src/tools/clippy/tests/ui/derive.rs index 20ac8a6e6be..b06dd78608f 100644 --- a/src/tools/clippy/tests/ui/derive.rs +++ b/src/tools/clippy/tests/ui/derive.rs @@ -1,4 +1,9 @@ -#![allow(clippy::non_canonical_clone_impl, clippy::non_canonical_partial_ord_impl, dead_code)] +#![allow( + clippy::non_canonical_clone_impl, + clippy::non_canonical_partial_ord_impl, + clippy::needless_lifetimes, + dead_code +)] #![warn(clippy::expl_impl_clone_on_copy)] diff --git a/src/tools/clippy/tests/ui/derive.stderr b/src/tools/clippy/tests/ui/derive.stderr index d5f9d7cf2a2..0eb4b3c1ada 100644 --- a/src/tools/clippy/tests/ui/derive.stderr +++ b/src/tools/clippy/tests/ui/derive.stderr @@ -1,5 +1,5 @@ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:8:1 + --> tests/ui/derive.rs:13:1 | LL | / impl Clone for Qux { LL | | @@ -10,7 +10,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:8:1 + --> tests/ui/derive.rs:13:1 | LL | / impl Clone for Qux { LL | | @@ -23,7 +23,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::expl_impl_clone_on_copy)]` error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:33:1 + --> tests/ui/derive.rs:38:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -34,7 +34,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:33:1 + --> tests/ui/derive.rs:38:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -45,7 +45,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:45:1 + --> tests/ui/derive.rs:50:1 | LL | / impl Clone for BigArray { LL | | @@ -56,7 +56,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:45:1 + --> tests/ui/derive.rs:50:1 | LL | / impl Clone for BigArray { LL | | @@ -67,7 +67,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:57:1 + --> tests/ui/derive.rs:62:1 | LL | / impl Clone for FnPtr { LL | | @@ -78,7 +78,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:57:1 + --> tests/ui/derive.rs:62:1 | LL | / impl Clone for FnPtr { LL | | @@ -89,7 +89,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:78:1 + --> tests/ui/derive.rs:83:1 | LL | / impl<T: Clone> Clone for Generic2<T> { LL | | @@ -100,7 +100,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:78:1 + --> tests/ui/derive.rs:83:1 | LL | / impl<T: Clone> Clone for Generic2<T> { LL | | diff --git a/src/tools/clippy/tests/ui/diverging_sub_expression.rs b/src/tools/clippy/tests/ui/diverging_sub_expression.rs index e0acf050949..1abba60fd34 100644 --- a/src/tools/clippy/tests/ui/diverging_sub_expression.rs +++ b/src/tools/clippy/tests/ui/diverging_sub_expression.rs @@ -67,3 +67,9 @@ fn foobar() { }; } } + +#[allow(unused)] +fn ignore_todo() { + let x: u32 = todo!(); + println!("{x}"); +} diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.fixed b/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.fixed deleted file mode 100644 index 1aaa26afe7f..00000000000 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.fixed +++ /dev/null @@ -1,47 +0,0 @@ -// https://github.com/rust-lang/rust-clippy/issues/12917 -#![warn(clippy::doc_lazy_continuation)] - -/// This is a constant. -/// -/// The meaning of which should not be explained. -pub const A: i32 = 42; - -/// This is another constant, no longer used. -/// -/// This block of documentation has a long -/// explanation and derivation to explain -/// why it is what it is, and how it's used. -/// -/// It is left here for historical reasons, and -/// for reference. -/// -/// Reasons it's great: -/// - First reason -/// - Second reason -/// -//pub const B: i32 = 1337; - -/// This is yet another constant. -/// -/// This has a similar fate as `B`. -/// -/// Reasons it's useful: -/// 1. First reason -/// 2. Second reason -/// -//pub const C: i32 = 8008; - -/// This is still in use. -pub const D: i32 = 20; - -/// > blockquote code path -/// - -/// bottom text -pub const E: i32 = 20; - -/// > blockquote code path -/// -#[repr(C)] -/// bottom text -pub struct Foo(i32); diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.rs b/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.rs deleted file mode 100644 index e1ab8fc8389..00000000000 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.rs +++ /dev/null @@ -1,43 +0,0 @@ -// https://github.com/rust-lang/rust-clippy/issues/12917 -#![warn(clippy::doc_lazy_continuation)] - -/// This is a constant. -/// -/// The meaning of which should not be explained. -pub const A: i32 = 42; - -/// This is another constant, no longer used. -/// -/// This block of documentation has a long -/// explanation and derivation to explain -/// why it is what it is, and how it's used. -/// -/// It is left here for historical reasons, and -/// for reference. -/// -/// Reasons it's great: -/// - First reason -/// - Second reason -//pub const B: i32 = 1337; - -/// This is yet another constant. -/// -/// This has a similar fate as `B`. -/// -/// Reasons it's useful: -/// 1. First reason -/// 2. Second reason -//pub const C: i32 = 8008; - -/// This is still in use. -pub const D: i32 = 20; - -/// > blockquote code path - -/// bottom text -pub const E: i32 = 20; - -/// > blockquote code path -#[repr(C)] -/// bottom text -pub struct Foo(i32); diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.stderr b/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.stderr deleted file mode 100644 index 854906a7474..00000000000 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.stderr +++ /dev/null @@ -1,56 +0,0 @@ -error: doc list item without indentation - --> tests/ui/doc/doc_lazy_blank_line.rs:23:5 - | -LL | /// This is yet another constant. - | ^ - | - = help: if this is intended to be part of the list, indent 3 spaces - = note: `-D clippy::doc-lazy-continuation` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::doc_lazy_continuation)]` -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// - Second reason -LL + /// - | - -error: doc list item without indentation - --> tests/ui/doc/doc_lazy_blank_line.rs:32:5 - | -LL | /// This is still in use. - | ^ - | - = help: if this is intended to be part of the list, indent 4 spaces -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// 2. Second reason -LL + /// - | - -error: doc quote line without `>` marker - --> tests/ui/doc/doc_lazy_blank_line.rs:37:5 - | -LL | /// bottom text - | ^ - | - = help: if this not intended to be a quote at all, escape it with `\>` -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// > blockquote code path -LL + /// - | - -error: doc quote line without `>` marker - --> tests/ui/doc/doc_lazy_blank_line.rs:42:5 - | -LL | /// bottom text - | ^ - | - = help: if this not intended to be a quote at all, escape it with `\>` -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// > blockquote code path -LL + /// - | - -error: aborting due to 4 previous errors - diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_list.fixed b/src/tools/clippy/tests/ui/doc/doc_lazy_list.fixed index ea59ae4c01c..da537518a2b 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_list.fixed +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_list.fixed @@ -7,9 +7,8 @@ fn one() {} /// 1. first line /// lazy list continuations don't make warnings with this lint -/// //~^ ERROR: doc list item without indentation -/// because they don't have the +/// because they don't have the //~^ ERROR: doc list item without indentation fn two() {} @@ -20,9 +19,8 @@ fn three() {} /// - first line /// lazy list continuations don't make warnings with this lint -/// //~^ ERROR: doc list item without indentation -/// because they don't have the +/// because they don't have the //~^ ERROR: doc list item without indentation fn four() {} @@ -33,9 +31,8 @@ fn five() {} /// - - first line /// this will warn on the lazy continuation -/// //~^ ERROR: doc list item without indentation -/// and so should this +/// and so should this //~^ ERROR: doc list item without indentation fn six() {} diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_list.stderr b/src/tools/clippy/tests/ui/doc/doc_lazy_list.stderr index 52aa74df894..b38f43b7555 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_list.stderr +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_list.stderr @@ -30,12 +30,11 @@ error: doc list item without indentation LL | /// because they don't have the | ^ | - = help: if this is intended to be part of the list, indent 3 spaces -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// lazy list continuations don't make warnings with this lint -LL + /// + = help: if this is supposed to be its own paragraph, add a blank line +help: indent this line | +LL | /// because they don't have the + | +++ error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:16:5 @@ -67,12 +66,11 @@ error: doc list item without indentation LL | /// because they don't have the | ^ | - = help: if this is intended to be part of the list, indent 4 spaces -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// lazy list continuations don't make warnings with this lint -LL + /// + = help: if this is supposed to be its own paragraph, add a blank line +help: indent this line | +LL | /// because they don't have the + | ++++ error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:28:5 @@ -104,12 +102,11 @@ error: doc list item without indentation LL | /// and so should this | ^^^^ | - = help: if this is intended to be part of the list, indent 2 spaces -help: if this should be its own paragraph, add a blank doc comment line - | -LL ~ /// this will warn on the lazy continuation -LL + /// + = help: if this is supposed to be its own paragraph, add a blank line +help: indent this line | +LL | /// and so should this + | ++ error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:56:5 diff --git a/src/tools/clippy/tests/ui/duplicate_underscore_argument.rs b/src/tools/clippy/tests/ui/duplicate_underscore_argument.rs index 118f6e4a34c..a725538436c 100644 --- a/src/tools/clippy/tests/ui/duplicate_underscore_argument.rs +++ b/src/tools/clippy/tests/ui/duplicate_underscore_argument.rs @@ -1,5 +1,4 @@ #![warn(clippy::duplicate_underscore_argument)] -#[allow(dead_code, unused)] fn join_the_dark_side(darth: i32, _darth: i32) {} //~^ ERROR: `darth` already exists, having another argument having almost the same name ma diff --git a/src/tools/clippy/tests/ui/duplicate_underscore_argument.stderr b/src/tools/clippy/tests/ui/duplicate_underscore_argument.stderr index 40a24b823d1..74979b15788 100644 --- a/src/tools/clippy/tests/ui/duplicate_underscore_argument.stderr +++ b/src/tools/clippy/tests/ui/duplicate_underscore_argument.stderr @@ -1,5 +1,5 @@ error: `darth` already exists, having another argument having almost the same name makes code comprehension and documentation more difficult - --> tests/ui/duplicate_underscore_argument.rs:4:23 + --> tests/ui/duplicate_underscore_argument.rs:3:23 | LL | fn join_the_dark_side(darth: i32, _darth: i32) {} | ^^^^^ diff --git a/src/tools/clippy/tests/ui/duplicated_attributes.rs b/src/tools/clippy/tests/ui/duplicated_attributes.rs index 97cf4a69682..874f5d22075 100644 --- a/src/tools/clippy/tests/ui/duplicated_attributes.rs +++ b/src/tools/clippy/tests/ui/duplicated_attributes.rs @@ -27,4 +27,8 @@ trait Abc {} #[proc_macro_attr::duplicated_attr()] // Should not warn! fn babar() {} +#[allow(missing_docs, reason = "library for internal use only")] +#[allow(exported_private_dependencies, reason = "library for internal use only")] +fn duplicate_reason() {} + fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/doc_comments.1.fixed b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.1.fixed new file mode 100644 index 00000000000..fd6a94b6a80 --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.1.fixed @@ -0,0 +1,135 @@ +#![warn(clippy::empty_line_after_outer_attr, clippy::empty_line_after_doc_comments)] + +//~vvv empty_line_after_doc_comments +/// Meant to be an +/// inner doc comment +/// for the crate +fn first_in_crate() {} + +mod m { + //~vvv empty_line_after_doc_comments + /// Meant to be an + /// inner doc comment + /// for the module + fn first_in_module() {} +} + +mod some_mod { + //! This doc comment should *NOT* produce a warning + + mod some_inner_mod { + fn some_noop() {} + } + + //~v empty_line_after_doc_comments + /// # Indented + /// Blank line + fn indented() {} +} + +//~v empty_line_after_doc_comments +/// This should produce a warning +fn with_doc_and_newline() {} + +// This should *NOT* produce a warning +#[crate_type = "lib"] +/// some comment +fn with_no_newline_and_comment() {} + +//~v empty_line_after_doc_comments +/// This doc comment should produce a warning +/** This is also a doc comment and is part of the warning + */ +#[allow(non_camel_case_types)] +#[allow(missing_docs)] +#[allow(dead_code)] +fn three_attributes() {} + +mod misattributed { + //~v empty_line_after_doc_comments + /// docs for `old_code` + // fn old_code() {} + fn new_code() {} + + //~vv empty_line_after_doc_comments + /// Docs + /// for OldA + // struct OldA; + /// Docs + /// for OldB + // struct OldB; + /// Docs + /// for Multiple + #[allow(dead_code)] + struct Multiple; +} + +mod block_comments { + //~v empty_line_after_doc_comments + /** + * Meant to be inner doc comment + */ + fn first_in_module() {} + + //~v empty_line_after_doc_comments + /** + * Docs for `old_code` + */ + /* fn old_code() {} */ + /** + * Docs for `new_code` + */ + fn new_code() {} + + //~v empty_line_after_doc_comments + /// Docs for `old_code2` + /* fn old_code2() {} */ + /// Docs for `new_code2` + fn new_code2() {} +} + +// This should *NOT* produce a warning +#[doc = " +Returns the escaped value of the textual representation of + +"] +pub fn function() -> bool { + true +} + +// This should *NOT* produce a warning +#[derive(Clone, Copy)] +pub enum FooFighter { + Bar1, + + Bar2, + + Bar3, + + Bar4, +} + +/// Should not lint +// some line comment +/// gaps without an empty line +struct LineComment; + +/// This should *NOT* produce a warning because the empty line is inside a block comment +/* + +*/ +pub struct EmptyInBlockComment; + +/// This should *NOT* produce a warning +/* test */ +pub struct BlockComment; + +/// Ignore the empty line inside a cfg_attr'd out attribute +#[cfg_attr(any(), multiline( + foo = 1 + + bar = 2 +))] +fn empty_line_in_cfg_attr() {} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/doc_comments.2.fixed b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.2.fixed new file mode 100644 index 00000000000..7a57dcd9233 --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.2.fixed @@ -0,0 +1,144 @@ +#![warn(clippy::empty_line_after_outer_attr, clippy::empty_line_after_doc_comments)] + +//~vvv empty_line_after_doc_comments +//! Meant to be an +//! inner doc comment +//! for the crate + +fn first_in_crate() {} + +mod m { + //~vvv empty_line_after_doc_comments + //! Meant to be an + //! inner doc comment + //! for the module + + fn first_in_module() {} +} + +mod some_mod { + //! This doc comment should *NOT* produce a warning + + mod some_inner_mod { + fn some_noop() {} + } + + //~v empty_line_after_doc_comments + /// # Indented + /// + /// Blank line + fn indented() {} +} + +//~v empty_line_after_doc_comments +/// This should produce a warning +fn with_doc_and_newline() {} + +// This should *NOT* produce a warning +#[crate_type = "lib"] +/// some comment +fn with_no_newline_and_comment() {} + +//~v empty_line_after_doc_comments +/// This doc comment should produce a warning +/** This is also a doc comment and is part of the warning + */ +#[allow(non_camel_case_types)] +#[allow(missing_docs)] +#[allow(dead_code)] +fn three_attributes() {} + +mod misattributed { + //~v empty_line_after_doc_comments + // /// docs for `old_code` + // fn old_code() {} + + fn new_code() {} + + //~vv empty_line_after_doc_comments + // /// Docs + // /// for OldA + // struct OldA; + + // /// Docs + // /// for OldB + // struct OldB; + + /// Docs + /// for Multiple + #[allow(dead_code)] + struct Multiple; +} + +mod block_comments { + //~v empty_line_after_doc_comments + /*! + * Meant to be inner doc comment + */ + + fn first_in_module() {} + + //~v empty_line_after_doc_comments + /* + * Docs for `old_code` + */ + /* fn old_code() {} */ + + /** + * Docs for `new_code` + */ + fn new_code() {} + + //~v empty_line_after_doc_comments + // /// Docs for `old_code2` + /* fn old_code2() {} */ + + /// Docs for `new_code2` + fn new_code2() {} +} + +// This should *NOT* produce a warning +#[doc = " +Returns the escaped value of the textual representation of + +"] +pub fn function() -> bool { + true +} + +// This should *NOT* produce a warning +#[derive(Clone, Copy)] +pub enum FooFighter { + Bar1, + + Bar2, + + Bar3, + + Bar4, +} + +/// Should not lint +// some line comment +/// gaps without an empty line +struct LineComment; + +/// This should *NOT* produce a warning because the empty line is inside a block comment +/* + +*/ +pub struct EmptyInBlockComment; + +/// This should *NOT* produce a warning +/* test */ +pub struct BlockComment; + +/// Ignore the empty line inside a cfg_attr'd out attribute +#[cfg_attr(any(), multiline( + foo = 1 + + bar = 2 +))] +fn empty_line_in_cfg_attr() {} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/doc_comments.rs b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.rs new file mode 100644 index 00000000000..1da761a5c3d --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.rs @@ -0,0 +1,147 @@ +#![warn(clippy::empty_line_after_outer_attr, clippy::empty_line_after_doc_comments)] + +//~vvv empty_line_after_doc_comments +/// Meant to be an +/// inner doc comment +/// for the crate + +fn first_in_crate() {} + +mod m { + //~vvv empty_line_after_doc_comments + /// Meant to be an + /// inner doc comment + /// for the module + + fn first_in_module() {} +} + +mod some_mod { + //! This doc comment should *NOT* produce a warning + + mod some_inner_mod { + fn some_noop() {} + } + + //~v empty_line_after_doc_comments + /// # Indented + + /// Blank line + fn indented() {} +} + +//~v empty_line_after_doc_comments +/// This should produce a warning + +fn with_doc_and_newline() {} + +// This should *NOT* produce a warning +#[crate_type = "lib"] +/// some comment +fn with_no_newline_and_comment() {} + +//~v empty_line_after_doc_comments +/// This doc comment should produce a warning + +/** This is also a doc comment and is part of the warning + */ + +#[allow(non_camel_case_types)] +#[allow(missing_docs)] +#[allow(dead_code)] +fn three_attributes() {} + +mod misattributed { + //~v empty_line_after_doc_comments + /// docs for `old_code` + // fn old_code() {} + + fn new_code() {} + + //~vv empty_line_after_doc_comments + /// Docs + /// for OldA + // struct OldA; + + /// Docs + /// for OldB + // struct OldB; + + /// Docs + /// for Multiple + #[allow(dead_code)] + struct Multiple; +} + +mod block_comments { + //~v empty_line_after_doc_comments + /** + * Meant to be inner doc comment + */ + + fn first_in_module() {} + + //~v empty_line_after_doc_comments + /** + * Docs for `old_code` + */ + /* fn old_code() {} */ + + /** + * Docs for `new_code` + */ + fn new_code() {} + + //~v empty_line_after_doc_comments + /// Docs for `old_code2` + /* fn old_code2() {} */ + + /// Docs for `new_code2` + fn new_code2() {} +} + +// This should *NOT* produce a warning +#[doc = " +Returns the escaped value of the textual representation of + +"] +pub fn function() -> bool { + true +} + +// This should *NOT* produce a warning +#[derive(Clone, Copy)] +pub enum FooFighter { + Bar1, + + Bar2, + + Bar3, + + Bar4, +} + +/// Should not lint +// some line comment +/// gaps without an empty line +struct LineComment; + +/// This should *NOT* produce a warning because the empty line is inside a block comment +/* + +*/ +pub struct EmptyInBlockComment; + +/// This should *NOT* produce a warning +/* test */ +pub struct BlockComment; + +/// Ignore the empty line inside a cfg_attr'd out attribute +#[cfg_attr(any(), multiline( + foo = 1 + + bar = 2 +))] +fn empty_line_in_cfg_attr() {} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/doc_comments.stderr b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.stderr new file mode 100644 index 00000000000..c238b4c9a17 --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/doc_comments.stderr @@ -0,0 +1,176 @@ +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:6:1 + | +LL | / /// for the crate +LL | | + | |_ +LL | fn first_in_crate() {} + | ------------------- the comment documents this function + | + = note: `-D clippy::empty-line-after-doc-comments` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::empty_line_after_doc_comments)]` + = help: if the empty line is unintentional remove it +help: if the comment should document the crate use an inner doc comment + | +LL ~ //! Meant to be an +LL ~ //! inner doc comment +LL ~ //! for the crate + | + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:14:5 + | +LL | / /// for the module +LL | | + | |_ +LL | fn first_in_module() {} + | -------------------- the comment documents this function + | + = help: if the empty line is unintentional remove it +help: if the comment should document the parent module use an inner doc comment + | +LL ~ //! Meant to be an +LL ~ //! inner doc comment +LL ~ //! for the module + | + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:27:5 + | +LL | / /// # Indented +LL | | + | |_ +LL | /// Blank line +LL | fn indented() {} + | ------------- the comment documents this function + | + = help: if the empty line is unintentional remove it +help: if the documentation should include the empty line include it in the comment + | +LL | /// + | + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:34:1 + | +LL | / /// This should produce a warning +LL | | + | |_ +LL | fn with_doc_and_newline() {} + | ------------------------- the comment documents this function + | + = help: if the empty line is unintentional remove it + +error: empty lines after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:44:1 + | +LL | / /// This doc comment should produce a warning +LL | | +LL | | /** This is also a doc comment and is part of the warning +LL | | */ +LL | | + | |_ +... +LL | fn three_attributes() {} + | --------------------- the comment documents this function + | + = help: if the empty lines are unintentional remove them + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:56:5 + | +LL | / /// docs for `old_code` +LL | | // fn old_code() {} +LL | | + | |_ +LL | fn new_code() {} + | ------------- the comment documents this function + | + = help: if the empty line is unintentional remove it +help: if the doc comment should not document `new_code` comment it out + | +LL | // /// docs for `old_code` + | ++ + +error: empty lines after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:63:5 + | +LL | / /// for OldA +LL | | // struct OldA; +LL | | +LL | | /// Docs +LL | | /// for OldB +LL | | // struct OldB; +LL | | + | |_ +... +LL | struct Multiple; + | --------------- the comment documents this struct + | + = help: if the empty lines are unintentional remove them +help: if the doc comment should not document `Multiple` comment it out + | +LL ~ // /// Docs +LL ~ // /// for OldA +LL | // struct OldA; +LL | +LL ~ // /// Docs +LL ~ // /// for OldB + | + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:78:5 + | +LL | / /** +LL | | * Meant to be inner doc comment +LL | | */ +LL | | + | |_ +LL | fn first_in_module() {} + | -------------------- the comment documents this function + | + = help: if the empty line is unintentional remove it +help: if the comment should document the parent module use an inner doc comment + | +LL | /*! + | ~ + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:85:5 + | +LL | / /** +LL | | * Docs for `old_code` +LL | | */ +LL | | /* fn old_code() {} */ +LL | | + | |_ +... +LL | fn new_code() {} + | ------------- the comment documents this function + | + = help: if the empty line is unintentional remove it +help: if the doc comment should not document `new_code` comment it out + | +LL - /** +LL + /* + | + +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:96:5 + | +LL | / /// Docs for `old_code2` +LL | | /* fn old_code2() {} */ +LL | | + | |_ +LL | /// Docs for `new_code2` +LL | fn new_code2() {} + | -------------- the comment documents this function + | + = help: if the empty line is unintentional remove it +help: if the doc comment should not document `new_code2` comment it out + | +LL | // /// Docs for `old_code2` + | ++ + +error: aborting due to 10 previous errors + diff --git a/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.1.fixed b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.1.fixed new file mode 100644 index 00000000000..36d80a2c95b --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.1.fixed @@ -0,0 +1,108 @@ +//@aux-build:../auxiliary/proc_macro_attr.rs +#![warn(clippy::empty_line_after_outer_attr, clippy::empty_line_after_doc_comments)] + +//~v empty_line_after_outer_attr +#[crate_type = "lib"] +fn first_in_crate() {} + +#[macro_use] +extern crate proc_macro_attr; + +//~v empty_line_after_outer_attr +#[inline] +/// some comment +fn with_one_newline_and_comment() {} + +#[inline] +/// some comment +fn with_no_newline_and_comment() {} + +//~v empty_line_after_outer_attr +#[inline] +fn with_one_newline() {} + +#[rustfmt::skip] +mod two_lines { + //~v empty_line_after_outer_attr + #[crate_type = "lib"] + fn with_two_newlines() {} +} + +//~v empty_line_after_outer_attr +#[doc = "doc attributes should be considered attributes"] +enum Baz { + One, + Two, +} + +//~v empty_line_after_outer_attr +#[repr(C)] +struct Foo { + one: isize, + two: isize, +} + +//~v empty_line_after_outer_attr +#[allow(dead_code)] +mod foo {} + +//~v empty_line_after_outer_attr +#[inline] +// Still lint cases where the empty line does not immediately follow the attribute +fn comment_before_empty_line() {} + +//~v empty_line_after_outer_attr +#[allow(unused)] +// This comment is isolated +pub fn isolated_comment() {} + +#[doc = " +Returns the escaped value of the textual representation of + +"] +pub fn function() -> bool { + true +} + +#[derive(Clone, Copy)] +pub enum FooFighter { + Bar1, + + Bar2, + + Bar3, + + Bar4, +} + +#[crate_type = "lib"] +/* + +*/ +pub struct EmptyLineInBlockComment; + +#[crate_type = "lib"] +/* test */ +pub struct BlockComment; + +// See https://github.com/rust-lang/rust-clippy/issues/5567 +#[rustfmt::skip] +#[fake_async_trait] +pub trait Bazz { + fn foo() -> Vec<u8> { + let _i = ""; + + + + vec![] + } +} + +#[derive(Clone, Copy)] +#[dummy(string = "first line + +second line +")] +pub struct Args; + +fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.2.fixed b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.2.fixed new file mode 100644 index 00000000000..0e8e4129e85 --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.2.fixed @@ -0,0 +1,111 @@ +//@aux-build:../auxiliary/proc_macro_attr.rs +#![warn(clippy::empty_line_after_outer_attr, clippy::empty_line_after_doc_comments)] + +//~v empty_line_after_outer_attr +#![crate_type = "lib"] + +fn first_in_crate() {} + +#[macro_use] +extern crate proc_macro_attr; + +//~v empty_line_after_outer_attr +#[inline] +/// some comment +fn with_one_newline_and_comment() {} + +#[inline] +/// some comment +fn with_no_newline_and_comment() {} + +//~v empty_line_after_outer_attr +#[inline] +fn with_one_newline() {} + +#[rustfmt::skip] +mod two_lines { + //~v empty_line_after_outer_attr + #![crate_type = "lib"] + + + fn with_two_newlines() {} +} + +//~v empty_line_after_outer_attr +#[doc = "doc attributes should be considered attributes"] +enum Baz { + One, + Two, +} + +//~v empty_line_after_outer_attr +#[repr(C)] +struct Foo { + one: isize, + two: isize, +} + +//~v empty_line_after_outer_attr +#[allow(dead_code)] +mod foo {} + +//~v empty_line_after_outer_attr +#[inline] +// Still lint cases where the empty line does not immediately follow the attribute +fn comment_before_empty_line() {} + +//~v empty_line_after_outer_attr +#[allow(unused)] +// This comment is isolated +pub fn isolated_comment() {} + +#[doc = " +Returns the escaped value of the textual representation of + +"] +pub fn function() -> bool { + true +} + +#[derive(Clone, Copy)] +pub enum FooFighter { + Bar1, + + Bar2, + + Bar3, + + Bar4, +} + +#[crate_type = "lib"] +/* + +*/ +pub struct EmptyLineInBlockComment; + +#[crate_type = "lib"] +/* test */ +pub struct BlockComment; + +// See https://github.com/rust-lang/rust-clippy/issues/5567 +#[rustfmt::skip] +#[fake_async_trait] +pub trait Bazz { + fn foo() -> Vec<u8> { + let _i = ""; + + + + vec![] + } +} + +#[derive(Clone, Copy)] +#[dummy(string = "first line + +second line +")] +pub struct Args; + +fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.rs b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.rs new file mode 100644 index 00000000000..1295088ac00 --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.rs @@ -0,0 +1,119 @@ +//@aux-build:../auxiliary/proc_macro_attr.rs +#![warn(clippy::empty_line_after_outer_attr, clippy::empty_line_after_doc_comments)] + +//~v empty_line_after_outer_attr +#[crate_type = "lib"] + +fn first_in_crate() {} + +#[macro_use] +extern crate proc_macro_attr; + +//~v empty_line_after_outer_attr +#[inline] + +/// some comment +fn with_one_newline_and_comment() {} + +#[inline] +/// some comment +fn with_no_newline_and_comment() {} + +//~v empty_line_after_outer_attr +#[inline] + +fn with_one_newline() {} + +#[rustfmt::skip] +mod two_lines { + //~v empty_line_after_outer_attr + #[crate_type = "lib"] + + + fn with_two_newlines() {} +} + +//~v empty_line_after_outer_attr +#[doc = "doc attributes should be considered attributes"] + +enum Baz { + One, + Two, +} + +//~v empty_line_after_outer_attr +#[repr(C)] + +struct Foo { + one: isize, + two: isize, +} + +//~v empty_line_after_outer_attr +#[allow(dead_code)] + +mod foo {} + +//~v empty_line_after_outer_attr +#[inline] +// Still lint cases where the empty line does not immediately follow the attribute + +fn comment_before_empty_line() {} + +//~v empty_line_after_outer_attr +#[allow(unused)] + +// This comment is isolated + +pub fn isolated_comment() {} + +#[doc = " +Returns the escaped value of the textual representation of + +"] +pub fn function() -> bool { + true +} + +#[derive(Clone, Copy)] +pub enum FooFighter { + Bar1, + + Bar2, + + Bar3, + + Bar4, +} + +#[crate_type = "lib"] +/* + +*/ +pub struct EmptyLineInBlockComment; + +#[crate_type = "lib"] +/* test */ +pub struct BlockComment; + +// See https://github.com/rust-lang/rust-clippy/issues/5567 +#[rustfmt::skip] +#[fake_async_trait] +pub trait Bazz { + fn foo() -> Vec<u8> { + let _i = ""; + + + + vec![] + } +} + +#[derive(Clone, Copy)] +#[dummy(string = "first line + +second line +")] +pub struct Args; + +fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.stderr b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.stderr new file mode 100644 index 00000000000..958b40424a9 --- /dev/null +++ b/src/tools/clippy/tests/ui/empty_line_after/outer_attribute.stderr @@ -0,0 +1,116 @@ +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:5:1 + | +LL | / #[crate_type = "lib"] +LL | | + | |_ +LL | fn first_in_crate() {} + | ------------------- the attribute applies to this function + | + = note: `-D clippy::empty-line-after-outer-attr` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::empty_line_after_outer_attr)]` + = help: if the empty line is unintentional remove it +help: if the attribute should apply to the crate use an inner attribute + | +LL | #![crate_type = "lib"] + | + + +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:13:1 + | +LL | / #[inline] +LL | | + | |_ +LL | /// some comment +LL | fn with_one_newline_and_comment() {} + | --------------------------------- the attribute applies to this function + | + = help: if the empty line is unintentional remove it + +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:23:1 + | +LL | / #[inline] +LL | | + | |_ +LL | fn with_one_newline() {} + | --------------------- the attribute applies to this function + | + = help: if the empty line is unintentional remove it + +error: empty lines after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:30:5 + | +LL | / #[crate_type = "lib"] +LL | | +LL | | + | |_ +LL | fn with_two_newlines() {} + | ---------------------- the attribute applies to this function + | + = help: if the empty lines are unintentional remove them +help: if the attribute should apply to the parent module use an inner attribute + | +LL | #![crate_type = "lib"] + | + + +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:37:1 + | +LL | / #[doc = "doc attributes should be considered attributes"] +LL | | + | |_ +LL | enum Baz { + | -------- the attribute applies to this enum + | + = help: if the empty line is unintentional remove it + +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:45:1 + | +LL | / #[repr(C)] +LL | | + | |_ +LL | struct Foo { + | ---------- the attribute applies to this struct + | + = help: if the empty line is unintentional remove it + +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:53:1 + | +LL | / #[allow(dead_code)] +LL | | + | |_ +LL | mod foo {} + | ------- the attribute applies to this module + | + = help: if the empty line is unintentional remove it + +error: empty line after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:58:1 + | +LL | / #[inline] +LL | | // Still lint cases where the empty line does not immediately follow the attribute +LL | | + | |_ +LL | fn comment_before_empty_line() {} + | ------------------------------ the attribute applies to this function + | + = help: if the empty line is unintentional remove it + +error: empty lines after outer attribute + --> tests/ui/empty_line_after/outer_attribute.rs:64:1 + | +LL | / #[allow(unused)] +LL | | +LL | | // This comment is isolated +LL | | + | |_ +LL | pub fn isolated_comment() {} + | ------------------------- the attribute applies to this function + | + = help: if the empty lines are unintentional remove them + +error: aborting due to 9 previous errors + diff --git a/src/tools/clippy/tests/ui/empty_line_after_doc_comments.rs b/src/tools/clippy/tests/ui/empty_line_after_doc_comments.rs deleted file mode 100644 index dd78491749c..00000000000 --- a/src/tools/clippy/tests/ui/empty_line_after_doc_comments.rs +++ /dev/null @@ -1,132 +0,0 @@ -//@aux-build:proc_macro_attr.rs -#![warn(clippy::empty_line_after_doc_comments)] -#![allow(clippy::assertions_on_constants, clippy::duplicated_attributes)] -#![feature(custom_inner_attributes)] -#![rustfmt::skip] - -#[macro_use] -extern crate proc_macro_attr; - -mod some_mod { - //! This doc comment should *NOT* produce a warning - - mod some_inner_mod { - fn some_noop() {} - } -} - -/// This should produce a warning - -fn with_doc_and_newline() { assert!(true)} - -// This should *NOT* produce a warning -#[crate_type = "lib"] - -/// some comment -fn with_one_newline_and_comment() { assert!(true) } - -// This should *NOT* produce a warning -#[crate_type = "lib"] -/// some comment -fn with_no_newline_and_comment() { assert!(true) } - - -// This should *NOT* produce a warning -#[crate_type = "lib"] - -fn with_one_newline() { assert!(true) } - -// This should *NOT* produce a warning -#[crate_type = "lib"] - - -fn with_two_newlines() { assert!(true) } - - -// This should *NOT* produce a warning -#[crate_type = "lib"] - -enum Baz { - One, - Two -} - -// This should *NOT* produce a warning -#[crate_type = "lib"] - -struct Foo { - one: isize, - two: isize -} - -// This should *NOT* produce a warning -#[crate_type = "lib"] - -mod foo { -} - -/// This doc comment should produce a warning - -/** This is also a doc comment and should produce a warning - */ - -// This should *NOT* produce a warning -#[allow(non_camel_case_types)] -#[allow(missing_docs)] -#[allow(missing_docs)] -fn three_attributes() { assert!(true) } - -// This should *NOT* produce a warning -#[doc = " -Returns the escaped value of the textual representation of - -"] -pub fn function() -> bool { - true -} - -// This should *NOT* produce a warning -#[derive(Clone, Copy)] -pub enum FooFighter { - Bar1, - - Bar2, - - Bar3, - - Bar4 -} - -// This should *NOT* produce a warning because the empty line is inside a block comment -#[crate_type = "lib"] -/* - -*/ -pub struct S; - -// This should *NOT* produce a warning -#[crate_type = "lib"] -/* test */ -pub struct T; - -// This should *NOT* produce a warning -// See https://github.com/rust-lang/rust-clippy/issues/5567 -#[fake_async_trait] -pub trait Bazz { - fn foo() -> Vec<u8> { - let _i = ""; - - - - vec![] - } -} - -#[derive(Clone, Copy)] -#[dummy(string = "first line - -second line -")] -pub struct Args; - -fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after_doc_comments.stderr b/src/tools/clippy/tests/ui/empty_line_after_doc_comments.stderr deleted file mode 100644 index 889ccf6ba19..00000000000 --- a/src/tools/clippy/tests/ui/empty_line_after_doc_comments.stderr +++ /dev/null @@ -1,37 +0,0 @@ -error: found an empty line after a doc comment. Perhaps you need to use `//!` to make a comment on a module, remove the empty line, or make a regular comment with `//`? - --> tests/ui/empty_line_after_doc_comments.rs:18:1 - | -LL | / /// This should produce a warning -LL | | -LL | | fn with_doc_and_newline() { assert!(true)} - | |_ - | - = note: `-D clippy::empty-line-after-doc-comments` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::empty_line_after_doc_comments)]` - -error: found an empty line after a doc comment. Perhaps you need to use `//!` to make a comment on a module, remove the empty line, or make a regular comment with `//`? - --> tests/ui/empty_line_after_doc_comments.rs:68:1 - | -LL | / /// This doc comment should produce a warning -LL | | -LL | | /** This is also a doc comment and should produce a warning -LL | | */ -... | -LL | | #[allow(missing_docs)] -LL | | fn three_attributes() { assert!(true) } - | |_ - -error: found an empty line after a doc comment. Perhaps you need to use `//!` to make a comment on a module, remove the empty line, or make a regular comment with `//`? - --> tests/ui/empty_line_after_doc_comments.rs:70:1 - | -LL | / /** This is also a doc comment and should produce a warning -LL | | */ -LL | | -LL | | // This should *NOT* produce a warning -... | -LL | | #[allow(missing_docs)] -LL | | fn three_attributes() { assert!(true) } - | |_ - -error: aborting due to 3 previous errors - diff --git a/src/tools/clippy/tests/ui/empty_line_after_outer_attribute.rs b/src/tools/clippy/tests/ui/empty_line_after_outer_attribute.rs deleted file mode 100644 index f147cf2cd5d..00000000000 --- a/src/tools/clippy/tests/ui/empty_line_after_outer_attribute.rs +++ /dev/null @@ -1,120 +0,0 @@ -//@aux-build:proc_macro_attr.rs -#![warn(clippy::empty_line_after_outer_attr)] -#![allow(clippy::assertions_on_constants, clippy::duplicated_attributes)] -#![feature(custom_inner_attributes)] -#![rustfmt::skip] - -#[macro_use] -extern crate proc_macro_attr; - -// This should produce a warning -#[crate_type = "lib"] - -/// some comment -fn with_one_newline_and_comment() { assert!(true) } - -// This should not produce a warning -#[crate_type = "lib"] -/// some comment -fn with_no_newline_and_comment() { assert!(true) } - - -// This should produce a warning -#[crate_type = "lib"] - -fn with_one_newline() { assert!(true) } - -// This should produce a warning, too -#[crate_type = "lib"] - - -fn with_two_newlines() { assert!(true) } - - -// This should produce a warning -#[crate_type = "lib"] - -enum Baz { - One, - Two -} - -// This should produce a warning -#[crate_type = "lib"] - -struct Foo { - one: isize, - two: isize -} - -// This should produce a warning -#[crate_type = "lib"] - -mod foo { -} - -/// This doc comment should not produce a warning - -/** This is also a doc comment and should not produce a warning - */ - -// This should not produce a warning -#[allow(non_camel_case_types)] -#[allow(missing_docs)] -#[allow(missing_docs)] -fn three_attributes() { assert!(true) } - -// This should not produce a warning -#[doc = " -Returns the escaped value of the textual representation of - -"] -pub fn function() -> bool { - true -} - -// This should not produce a warning -#[derive(Clone, Copy)] -pub enum FooFighter { - Bar1, - - Bar2, - - Bar3, - - Bar4 -} - -// This should not produce a warning because the empty line is inside a block comment -#[crate_type = "lib"] -/* - -*/ -pub struct S; - -// This should not produce a warning -#[crate_type = "lib"] -/* test */ -pub struct T; - -// This should not produce a warning -// See https://github.com/rust-lang/rust-clippy/issues/5567 -#[fake_async_trait] -pub trait Bazz { - fn foo() -> Vec<u8> { - let _i = ""; - - - - vec![] - } -} - -#[derive(Clone, Copy)] -#[dummy(string = "first line - -second line -")] -pub struct Args; - -fn main() {} diff --git a/src/tools/clippy/tests/ui/empty_line_after_outer_attribute.stderr b/src/tools/clippy/tests/ui/empty_line_after_outer_attribute.stderr deleted file mode 100644 index b43e6e30da2..00000000000 --- a/src/tools/clippy/tests/ui/empty_line_after_outer_attribute.stderr +++ /dev/null @@ -1,54 +0,0 @@ -error: found an empty line after an outer attribute. Perhaps you forgot to add a `!` to make it an inner attribute? - --> tests/ui/empty_line_after_outer_attribute.rs:11:1 - | -LL | / #[crate_type = "lib"] -LL | | -LL | | /// some comment -LL | | fn with_one_newline_and_comment() { assert!(true) } - | |_ - | - = note: `-D clippy::empty-line-after-outer-attr` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::empty_line_after_outer_attr)]` - -error: found an empty line after an outer attribute. Perhaps you forgot to add a `!` to make it an inner attribute? - --> tests/ui/empty_line_after_outer_attribute.rs:23:1 - | -LL | / #[crate_type = "lib"] -LL | | -LL | | fn with_one_newline() { assert!(true) } - | |_ - -error: found an empty line after an outer attribute. Perhaps you forgot to add a `!` to make it an inner attribute? - --> tests/ui/empty_line_after_outer_attribute.rs:28:1 - | -LL | / #[crate_type = "lib"] -... | -LL | | fn with_two_newlines() { assert!(true) } - | |_ - -error: found an empty line after an outer attribute. Perhaps you forgot to add a `!` to make it an inner attribute? - --> tests/ui/empty_line_after_outer_attribute.rs:35:1 - | -LL | / #[crate_type = "lib"] -LL | | -LL | | enum Baz { - | |_ - -error: found an empty line after an outer attribute. Perhaps you forgot to add a `!` to make it an inner attribute? - --> tests/ui/empty_line_after_outer_attribute.rs:43:1 - | -LL | / #[crate_type = "lib"] -LL | | -LL | | struct Foo { - | |_ - -error: found an empty line after an outer attribute. Perhaps you forgot to add a `!` to make it an inner attribute? - --> tests/ui/empty_line_after_outer_attribute.rs:51:1 - | -LL | / #[crate_type = "lib"] -LL | | -LL | | mod foo { - | |_ - -error: aborting due to 6 previous errors - diff --git a/src/tools/clippy/tests/ui/empty_loop_no_std.rs b/src/tools/clippy/tests/ui/empty_loop_no_std.rs index 5fe32351ed4..1bb895bda75 100644 --- a/src/tools/clippy/tests/ui/empty_loop_no_std.rs +++ b/src/tools/clippy/tests/ui/empty_loop_no_std.rs @@ -1,5 +1,5 @@ //@compile-flags: -Clink-arg=-nostartfiles -//@ignore-target-apple +//@ignore-target: apple #![warn(clippy::empty_loop)] #![feature(lang_items, start, libc)] diff --git a/src/tools/clippy/tests/ui/enum_clike_unportable_variant.rs b/src/tools/clippy/tests/ui/enum_clike_unportable_variant.rs index c50404c5047..37849179d6a 100644 --- a/src/tools/clippy/tests/ui/enum_clike_unportable_variant.rs +++ b/src/tools/clippy/tests/ui/enum_clike_unportable_variant.rs @@ -1,4 +1,4 @@ -//@ignore-32bit +//@ignore-bitwidth: 32 #![warn(clippy::enum_clike_unportable_variant)] #![allow(unused, non_upper_case_globals)] diff --git a/src/tools/clippy/tests/ui/eta.fixed b/src/tools/clippy/tests/ui/eta.fixed index ca422ee29c1..f1baf28200e 100644 --- a/src/tools/clippy/tests/ui/eta.fixed +++ b/src/tools/clippy/tests/ui/eta.fixed @@ -9,7 +9,8 @@ clippy::redundant_closure_call, clippy::uninlined_format_args, clippy::useless_vec, - clippy::unnecessary_map_on_constructor + clippy::unnecessary_map_on_constructor, + clippy::needless_lifetimes )] use std::path::{Path, PathBuf}; diff --git a/src/tools/clippy/tests/ui/eta.rs b/src/tools/clippy/tests/ui/eta.rs index c0db91c03ef..c52a51880bf 100644 --- a/src/tools/clippy/tests/ui/eta.rs +++ b/src/tools/clippy/tests/ui/eta.rs @@ -9,7 +9,8 @@ clippy::redundant_closure_call, clippy::uninlined_format_args, clippy::useless_vec, - clippy::unnecessary_map_on_constructor + clippy::unnecessary_map_on_constructor, + clippy::needless_lifetimes )] use std::path::{Path, PathBuf}; diff --git a/src/tools/clippy/tests/ui/eta.stderr b/src/tools/clippy/tests/ui/eta.stderr index 5540261fc57..1731a4377f5 100644 --- a/src/tools/clippy/tests/ui/eta.stderr +++ b/src/tools/clippy/tests/ui/eta.stderr @@ -1,5 +1,5 @@ error: redundant closure - --> tests/ui/eta.rs:30:27 + --> tests/ui/eta.rs:31:27 | LL | let a = Some(1u8).map(|a| foo(a)); | ^^^^^^^^^^ help: replace the closure with the function itself: `foo` @@ -8,31 +8,31 @@ LL | let a = Some(1u8).map(|a| foo(a)); = help: to override `-D warnings` add `#[allow(clippy::redundant_closure)]` error: redundant closure - --> tests/ui/eta.rs:34:40 + --> tests/ui/eta.rs:35:40 | LL | let _: Option<Vec<u8>> = true.then(|| vec![]); // special case vec! | ^^^^^^^^^ help: replace the closure with `Vec::new`: `std::vec::Vec::new` error: redundant closure - --> tests/ui/eta.rs:35:35 + --> tests/ui/eta.rs:36:35 | LL | let d = Some(1u8).map(|a| foo((|b| foo2(b))(a))); //is adjusted? | ^^^^^^^^^^^^^ help: replace the closure with the function itself: `foo2` error: redundant closure - --> tests/ui/eta.rs:36:26 + --> tests/ui/eta.rs:37:26 | LL | all(&[1, 2, 3], &&2, |x, y| below(x, y)); //is adjusted | ^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `below` error: redundant closure - --> tests/ui/eta.rs:43:27 + --> tests/ui/eta.rs:44:27 | LL | let e = Some(1u8).map(|a| generic(a)); | ^^^^^^^^^^^^^^ help: replace the closure with the function itself: `generic` error: redundant closure - --> tests/ui/eta.rs:95:51 + --> tests/ui/eta.rs:96:51 | LL | let e = Some(TestStruct { some_ref: &i }).map(|a| a.foo()); | ^^^^^^^^^^^ help: replace the closure with the method itself: `TestStruct::foo` @@ -41,169 +41,169 @@ LL | let e = Some(TestStruct { some_ref: &i }).map(|a| a.foo()); = help: to override `-D warnings` add `#[allow(clippy::redundant_closure_for_method_calls)]` error: redundant closure - --> tests/ui/eta.rs:96:51 + --> tests/ui/eta.rs:97:51 | LL | let e = Some(TestStruct { some_ref: &i }).map(|a| a.trait_foo()); | ^^^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `TestTrait::trait_foo` error: redundant closure - --> tests/ui/eta.rs:98:42 + --> tests/ui/eta.rs:99:42 | LL | let e = Some(&mut vec![1, 2, 3]).map(|v| v.clear()); | ^^^^^^^^^^^^^ help: replace the closure with the method itself: `std::vec::Vec::clear` error: redundant closure - --> tests/ui/eta.rs:102:29 + --> tests/ui/eta.rs:103:29 | LL | let e = Some("str").map(|s| s.to_string()); | ^^^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `std::string::ToString::to_string` error: redundant closure - --> tests/ui/eta.rs:103:27 + --> tests/ui/eta.rs:104:27 | LL | let e = Some('a').map(|s| s.to_uppercase()); | ^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `char::to_uppercase` error: redundant closure - --> tests/ui/eta.rs:105:65 + --> tests/ui/eta.rs:106:65 | LL | let e: std::vec::Vec<char> = vec!['a', 'b', 'c'].iter().map(|c| c.to_ascii_uppercase()).collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `char::to_ascii_uppercase` error: redundant closure - --> tests/ui/eta.rs:168:22 + --> tests/ui/eta.rs:169:22 | LL | requires_fn_once(|| x()); | ^^^^^^ help: replace the closure with the function itself: `x` error: redundant closure - --> tests/ui/eta.rs:175:27 + --> tests/ui/eta.rs:176:27 | LL | let a = Some(1u8).map(|a| foo_ptr(a)); | ^^^^^^^^^^^^^^ help: replace the closure with the function itself: `foo_ptr` error: redundant closure - --> tests/ui/eta.rs:180:27 + --> tests/ui/eta.rs:181:27 | LL | let a = Some(1u8).map(|a| closure(a)); | ^^^^^^^^^^^^^^ help: replace the closure with the function itself: `closure` error: redundant closure - --> tests/ui/eta.rs:212:28 + --> tests/ui/eta.rs:213:28 | LL | x.into_iter().for_each(|x| add_to_res(x)); | ^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `&mut add_to_res` error: redundant closure - --> tests/ui/eta.rs:213:28 + --> tests/ui/eta.rs:214:28 | LL | y.into_iter().for_each(|x| add_to_res(x)); | ^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `&mut add_to_res` error: redundant closure - --> tests/ui/eta.rs:214:28 + --> tests/ui/eta.rs:215:28 | LL | z.into_iter().for_each(|x| add_to_res(x)); | ^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `add_to_res` error: redundant closure - --> tests/ui/eta.rs:221:21 + --> tests/ui/eta.rs:222:21 | LL | Some(1).map(|n| closure(n)); | ^^^^^^^^^^^^^^ help: replace the closure with the function itself: `&mut closure` error: redundant closure - --> tests/ui/eta.rs:225:21 + --> tests/ui/eta.rs:226:21 | LL | Some(1).map(|n| in_loop(n)); | ^^^^^^^^^^^^^^ help: replace the closure with the function itself: `in_loop` error: redundant closure - --> tests/ui/eta.rs:318:18 + --> tests/ui/eta.rs:319:18 | LL | takes_fn_mut(|| f()); | ^^^^^^ help: replace the closure with the function itself: `&mut f` error: redundant closure - --> tests/ui/eta.rs:321:19 + --> tests/ui/eta.rs:322:19 | LL | takes_fn_once(|| f()); | ^^^^^^ help: replace the closure with the function itself: `&mut f` error: redundant closure - --> tests/ui/eta.rs:325:26 + --> tests/ui/eta.rs:326:26 | LL | move || takes_fn_mut(|| f_used_once()) | ^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `&mut f_used_once` error: redundant closure - --> tests/ui/eta.rs:337:19 + --> tests/ui/eta.rs:338:19 | LL | array_opt.map(|a| a.as_slice()); | ^^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `<[u8; 3]>::as_slice` error: redundant closure - --> tests/ui/eta.rs:340:19 + --> tests/ui/eta.rs:341:19 | LL | slice_opt.map(|s| s.len()); | ^^^^^^^^^^^ help: replace the closure with the method itself: `<[u8]>::len` error: redundant closure - --> tests/ui/eta.rs:343:17 + --> tests/ui/eta.rs:344:17 | LL | ptr_opt.map(|p| p.is_null()); | ^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `<*const usize>::is_null` error: redundant closure - --> tests/ui/eta.rs:347:17 + --> tests/ui/eta.rs:348:17 | LL | dyn_opt.map(|d| d.method_on_dyn()); | ^^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the method itself: `<dyn TestTrait>::method_on_dyn` error: redundant closure - --> tests/ui/eta.rs:407:19 + --> tests/ui/eta.rs:408:19 | LL | let _ = f(&0, |x, y| f2(x, y)); | ^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `f2` error: redundant closure - --> tests/ui/eta.rs:435:22 + --> tests/ui/eta.rs:436:22 | LL | test.map(|t| t.method()) | ^^^^^^^^^^^^^^ help: replace the closure with the method itself: `Test::method` error: redundant closure - --> tests/ui/eta.rs:439:22 + --> tests/ui/eta.rs:440:22 | LL | test.map(|t| t.method()) | ^^^^^^^^^^^^^^ help: replace the closure with the method itself: `super::Outer::method` error: redundant closure - --> tests/ui/eta.rs:452:18 + --> tests/ui/eta.rs:453:18 | LL | test.map(|t| t.method()) | ^^^^^^^^^^^^^^ help: replace the closure with the method itself: `test_mod::Test::method` error: redundant closure - --> tests/ui/eta.rs:459:30 + --> tests/ui/eta.rs:460:30 | LL | test.map(|t| t.method()) | ^^^^^^^^^^^^^^ help: replace the closure with the method itself: `crate::issue_10854::d::Test::method` error: redundant closure - --> tests/ui/eta.rs:478:38 + --> tests/ui/eta.rs:479:38 | LL | let x = Box::new(|| None.map(|x| f(x))); | ^^^^^^^^ help: replace the closure with the function itself: `&f` error: redundant closure - --> tests/ui/eta.rs:482:38 + --> tests/ui/eta.rs:483:38 | LL | let x = Box::new(|| None.map(|x| f(x))); | ^^^^^^^^ help: replace the closure with the function itself: `f` error: redundant closure - --> tests/ui/eta.rs:499:35 + --> tests/ui/eta.rs:500:35 | LL | let _field = bind.or_else(|| get_default()).unwrap(); | ^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `get_default` diff --git a/src/tools/clippy/tests/ui/exit1.rs b/src/tools/clippy/tests/ui/exit1.rs index a89f6dd4ca0..36b3c42fd99 100644 --- a/src/tools/clippy/tests/ui/exit1.rs +++ b/src/tools/clippy/tests/ui/exit1.rs @@ -1,4 +1,4 @@ -#[warn(clippy::exit)] +#![warn(clippy::exit)] fn not_main() { if true { diff --git a/src/tools/clippy/tests/ui/exit2.rs b/src/tools/clippy/tests/ui/exit2.rs index d5ff93fb9cc..9bbb7b073a4 100644 --- a/src/tools/clippy/tests/ui/exit2.rs +++ b/src/tools/clippy/tests/ui/exit2.rs @@ -1,4 +1,4 @@ -#[warn(clippy::exit)] +#![warn(clippy::exit)] fn also_not_main() { std::process::exit(3); diff --git a/src/tools/clippy/tests/ui/exit3.rs b/src/tools/clippy/tests/ui/exit3.rs index 9dc0e1015a4..cab908aafd3 100644 --- a/src/tools/clippy/tests/ui/exit3.rs +++ b/src/tools/clippy/tests/ui/exit3.rs @@ -1,4 +1,4 @@ -#[warn(clippy::exit)] +#![warn(clippy::exit)] fn main() { if true { diff --git a/src/tools/clippy/tests/ui/expect_fun_call.fixed b/src/tools/clippy/tests/ui/expect_fun_call.fixed index 6ac3c43ad29..8f800c71941 100644 --- a/src/tools/clippy/tests/ui/expect_fun_call.fixed +++ b/src/tools/clippy/tests/ui/expect_fun_call.fixed @@ -5,8 +5,6 @@ clippy::unnecessary_literal_unwrap )] -/// Checks implementation of the `EXPECT_FUN_CALL` lint - macro_rules! one { () => { 1 diff --git a/src/tools/clippy/tests/ui/expect_fun_call.rs b/src/tools/clippy/tests/ui/expect_fun_call.rs index 22ea2db504f..b5cfafb2993 100644 --- a/src/tools/clippy/tests/ui/expect_fun_call.rs +++ b/src/tools/clippy/tests/ui/expect_fun_call.rs @@ -5,8 +5,6 @@ clippy::unnecessary_literal_unwrap )] -/// Checks implementation of the `EXPECT_FUN_CALL` lint - macro_rules! one { () => { 1 diff --git a/src/tools/clippy/tests/ui/expect_fun_call.stderr b/src/tools/clippy/tests/ui/expect_fun_call.stderr index b41904d04fa..bae853ac5c1 100644 --- a/src/tools/clippy/tests/ui/expect_fun_call.stderr +++ b/src/tools/clippy/tests/ui/expect_fun_call.stderr @@ -1,5 +1,5 @@ error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:37:26 + --> tests/ui/expect_fun_call.rs:35:26 | LL | with_none_and_format.expect(&format!("Error {}: fake error", error_code)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))` @@ -8,85 +8,85 @@ LL | with_none_and_format.expect(&format!("Error {}: fake error", error_code = help: to override `-D warnings` add `#[allow(clippy::expect_fun_call)]` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:40:26 + --> tests/ui/expect_fun_call.rs:38:26 | LL | with_none_and_as_str.expect(format!("Error {}: fake error", error_code).as_str()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:43:37 + --> tests/ui/expect_fun_call.rs:41:37 | LL | with_none_and_format_with_macro.expect(format!("Error {}: fake error", one!()).as_str()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("Error {}: fake error", one!()))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:53:25 + --> tests/ui/expect_fun_call.rs:51:25 | LL | with_err_and_format.expect(&format!("Error {}: fake error", error_code)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:56:25 + --> tests/ui/expect_fun_call.rs:54:25 | LL | with_err_and_as_str.expect(format!("Error {}: fake error", error_code).as_str()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:68:17 + --> tests/ui/expect_fun_call.rs:66:17 | LL | Some("foo").expect(format!("{} {}", 1, 2).as_ref()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("{} {}", 1, 2))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:89:21 + --> tests/ui/expect_fun_call.rs:87:21 | LL | Some("foo").expect(&get_string()); | ^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| { panic!("{}", get_string()) })` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:90:21 + --> tests/ui/expect_fun_call.rs:88:21 | LL | Some("foo").expect(get_string().as_ref()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| { panic!("{}", get_string()) })` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:91:21 + --> tests/ui/expect_fun_call.rs:89:21 | LL | Some("foo").expect(get_string().as_str()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| { panic!("{}", get_string()) })` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:93:21 + --> tests/ui/expect_fun_call.rs:91:21 | LL | Some("foo").expect(get_static_str()); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| { panic!("{}", get_static_str()) })` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:94:21 + --> tests/ui/expect_fun_call.rs:92:21 | LL | Some("foo").expect(get_non_static_str(&0)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| { panic!("{}", get_non_static_str(&0).to_string()) })` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:98:16 + --> tests/ui/expect_fun_call.rs:96:16 | LL | Some(true).expect(&format!("key {}, {}", 1, 2)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("key {}, {}", 1, 2))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:104:17 + --> tests/ui/expect_fun_call.rs:102:17 | LL | opt_ref.expect(&format!("{:?}", opt_ref)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("{:?}", opt_ref))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:108:20 + --> tests/ui/expect_fun_call.rs:106:20 | LL | format_capture.expect(&format!("{error_code}")); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("{error_code}"))` error: use of `expect` followed by a function call - --> tests/ui/expect_fun_call.rs:111:30 + --> tests/ui/expect_fun_call.rs:109:30 | LL | format_capture_and_value.expect(&format!("{error_code}, {}", 1)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| panic!("{error_code}, {}", 1))` diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.fixed b/src/tools/clippy/tests/ui/explicit_auto_deref.fixed index 255b2c5a220..9d476259b87 100644 --- a/src/tools/clippy/tests/ui/explicit_auto_deref.fixed +++ b/src/tools/clippy/tests/ui/explicit_auto_deref.fixed @@ -10,7 +10,8 @@ clippy::redundant_field_names, clippy::too_many_arguments, clippy::borrow_deref_ref, - clippy::let_unit_value + clippy::let_unit_value, + clippy::needless_lifetimes )] trait CallableStr { diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.rs b/src/tools/clippy/tests/ui/explicit_auto_deref.rs index 99906999f01..23307c837f0 100644 --- a/src/tools/clippy/tests/ui/explicit_auto_deref.rs +++ b/src/tools/clippy/tests/ui/explicit_auto_deref.rs @@ -10,7 +10,8 @@ clippy::redundant_field_names, clippy::too_many_arguments, clippy::borrow_deref_ref, - clippy::let_unit_value + clippy::let_unit_value, + clippy::needless_lifetimes )] trait CallableStr { diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.stderr b/src/tools/clippy/tests/ui/explicit_auto_deref.stderr index 53784934f63..0b05a554eb1 100644 --- a/src/tools/clippy/tests/ui/explicit_auto_deref.stderr +++ b/src/tools/clippy/tests/ui/explicit_auto_deref.stderr @@ -1,5 +1,5 @@ error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:68:19 + --> tests/ui/explicit_auto_deref.rs:69:19 | LL | let _: &str = &*s; | ^^^ help: try: `&s` @@ -8,271 +8,271 @@ LL | let _: &str = &*s; = help: to override `-D warnings` add `#[allow(clippy::explicit_auto_deref)]` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:69:19 + --> tests/ui/explicit_auto_deref.rs:70:19 | LL | let _: &str = &*{ String::new() }; | ^^^^^^^^^^^^^^^^^^^ help: try: `&{ String::new() }` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:70:19 + --> tests/ui/explicit_auto_deref.rs:71:19 | LL | let _: &str = &mut *{ String::new() }; | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut { String::new() }` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:74:11 + --> tests/ui/explicit_auto_deref.rs:75:11 | LL | f_str(&*s); | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:78:13 + --> tests/ui/explicit_auto_deref.rs:79:13 | LL | f_str_t(&*s, &*s); // Don't lint second param. | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:81:24 + --> tests/ui/explicit_auto_deref.rs:82:24 | LL | let _: &Box<i32> = &**b; | ^^^^ help: try: `&b` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:87:7 + --> tests/ui/explicit_auto_deref.rs:88:7 | LL | c(&*s); | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:93:9 + --> tests/ui/explicit_auto_deref.rs:94:9 | LL | &**x | ^^^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:97:11 + --> tests/ui/explicit_auto_deref.rs:98:11 | LL | { &**x } | ^^^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:101:9 + --> tests/ui/explicit_auto_deref.rs:102:9 | LL | &**{ x } | ^^^^^^^^ help: try: `{ x }` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:105:9 + --> tests/ui/explicit_auto_deref.rs:106:9 | LL | &***x | ^^^^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:122:12 + --> tests/ui/explicit_auto_deref.rs:123:12 | LL | f1(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:123:12 + --> tests/ui/explicit_auto_deref.rs:124:12 | LL | f2(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:124:12 + --> tests/ui/explicit_auto_deref.rs:125:12 | LL | f3(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:125:27 + --> tests/ui/explicit_auto_deref.rs:126:27 | LL | f4.callable_str()(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:126:12 + --> tests/ui/explicit_auto_deref.rs:127:12 | LL | f5(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:127:12 + --> tests/ui/explicit_auto_deref.rs:128:12 | LL | f6(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:128:27 + --> tests/ui/explicit_auto_deref.rs:129:27 | LL | f7.callable_str()(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:129:25 + --> tests/ui/explicit_auto_deref.rs:130:25 | LL | f8.callable_t()(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:130:12 + --> tests/ui/explicit_auto_deref.rs:131:12 | LL | f9(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:131:13 + --> tests/ui/explicit_auto_deref.rs:132:13 | LL | f10(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:132:26 + --> tests/ui/explicit_auto_deref.rs:133:26 | LL | f11.callable_t()(&*x); | ^^^ help: try: `&x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:136:16 + --> tests/ui/explicit_auto_deref.rs:137:16 | LL | let _ = S1(&*s); | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:141:21 + --> tests/ui/explicit_auto_deref.rs:142:21 | LL | let _ = S2 { s: &*s }; | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:157:30 + --> tests/ui/explicit_auto_deref.rs:158:30 | LL | let _ = Self::S1(&**s); | ^^^^ help: try: `s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:158:35 + --> tests/ui/explicit_auto_deref.rs:159:35 | LL | let _ = Self::S2 { s: &**s }; | ^^^^ help: try: `s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:161:20 + --> tests/ui/explicit_auto_deref.rs:162:20 | LL | let _ = E1::S1(&*s); | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:162:25 + --> tests/ui/explicit_auto_deref.rs:163:25 | LL | let _ = E1::S2 { s: &*s }; | ^^^ help: try: `&s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:180:13 + --> tests/ui/explicit_auto_deref.rs:181:13 | LL | let _ = (*b).foo; | ^^^^ help: try: `b` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:181:13 + --> tests/ui/explicit_auto_deref.rs:182:13 | LL | let _ = (**b).foo; | ^^^^^ help: try: `b` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:196:19 + --> tests/ui/explicit_auto_deref.rs:197:19 | LL | let _ = f_str(*ref_str); | ^^^^^^^^ help: try: `ref_str` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:198:19 + --> tests/ui/explicit_auto_deref.rs:199:19 | LL | let _ = f_str(**ref_ref_str); | ^^^^^^^^^^^^^ help: try: `ref_ref_str` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:208:12 + --> tests/ui/explicit_auto_deref.rs:209:12 | LL | f_str(&&*ref_str); // `needless_borrow` will suggest removing both references | ^^^^^^^^^ help: try: `ref_str` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:209:12 + --> tests/ui/explicit_auto_deref.rs:210:12 | LL | f_str(&&**ref_str); // `needless_borrow` will suggest removing only one reference | ^^^^^^^^^^ help: try: `ref_str` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:218:41 + --> tests/ui/explicit_auto_deref.rs:219:41 | LL | let _ = || -> &'static str { return *s }; | ^^ help: try: `s` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:237:9 + --> tests/ui/explicit_auto_deref.rs:238:9 | LL | &**x | ^^^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:260:8 + --> tests/ui/explicit_auto_deref.rs:261:8 | LL | c1(*x); | ^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:263:20 + --> tests/ui/explicit_auto_deref.rs:264:20 | LL | return *x; | ^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:265:9 + --> tests/ui/explicit_auto_deref.rs:266:9 | LL | *x | ^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:299:20 + --> tests/ui/explicit_auto_deref.rs:300:20 | LL | Some(x) => &mut *x, | ^^^^^^^ help: try: `x` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:332:22 + --> tests/ui/explicit_auto_deref.rs:333:22 | LL | let _ = &mut (*{ x.u }).x; | ^^^^^^^^^^ help: try: `{ x.u }` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:338:22 + --> tests/ui/explicit_auto_deref.rs:339:22 | LL | let _ = &mut (**x.u).x; | ^^^^^^^ help: try: `(*x.u)` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:339:22 + --> tests/ui/explicit_auto_deref.rs:340:22 | LL | let _ = &mut (**{ x.u }).x; | ^^^^^^^^^^^ help: try: `{ x.u }` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:343:22 + --> tests/ui/explicit_auto_deref.rs:344:22 | LL | let _ = &mut (*x.u).x; | ^^^^^^ help: try: `x.u` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:344:22 + --> tests/ui/explicit_auto_deref.rs:345:22 | LL | let _ = &mut (*{ x.u }).x; | ^^^^^^^^^^ help: try: `{ x.u }` error: deref which would be done by auto-deref - --> tests/ui/explicit_auto_deref.rs:367:13 + --> tests/ui/explicit_auto_deref.rs:368:13 | LL | foo(&*wrapped_bar); | ^^^^^^^^^^^^^ help: try: `&wrapped_bar` diff --git a/src/tools/clippy/tests/ui/extra_unused_lifetimes.rs b/src/tools/clippy/tests/ui/extra_unused_lifetimes.rs index cdfaf8d3afe..17d2ed9f50c 100644 --- a/src/tools/clippy/tests/ui/extra_unused_lifetimes.rs +++ b/src/tools/clippy/tests/ui/extra_unused_lifetimes.rs @@ -114,9 +114,17 @@ mod second_case { fn hey(); } + // Should lint. The response to the above comment incorrectly called this a false positive. The + // lifetime `'a` can be removed, as demonstrated below. impl<'a, T: Source + ?Sized + 'a> Source for Box<T> { fn hey() {} } + + struct OtherBox<T: ?Sized>(Box<T>); + + impl<T: Source + ?Sized> Source for OtherBox<T> { + fn hey() {} + } } // Should not lint diff --git a/src/tools/clippy/tests/ui/extra_unused_lifetimes.stderr b/src/tools/clippy/tests/ui/extra_unused_lifetimes.stderr index 56292cb5d1a..85fbb7568ff 100644 --- a/src/tools/clippy/tests/ui/extra_unused_lifetimes.stderr +++ b/src/tools/clippy/tests/ui/extra_unused_lifetimes.stderr @@ -37,5 +37,11 @@ error: this lifetime isn't used in the function definition LL | pub fn something<'c>() -> Self { | ^^ -error: aborting due to 6 previous errors +error: this lifetime isn't used in the impl + --> tests/ui/extra_unused_lifetimes.rs:119:10 + | +LL | impl<'a, T: Source + ?Sized + 'a> Source for Box<T> { + | ^^ + +error: aborting due to 7 previous errors diff --git a/src/tools/clippy/tests/ui/field_reassign_with_default.rs b/src/tools/clippy/tests/ui/field_reassign_with_default.rs index 620cffb4f04..2a432751952 100644 --- a/src/tools/clippy/tests/ui/field_reassign_with_default.rs +++ b/src/tools/clippy/tests/ui/field_reassign_with_default.rs @@ -192,8 +192,8 @@ struct WrapperMulti<T, U> { } mod issue6312 { - use std::sync::atomic::AtomicBool; use std::sync::Arc; + use std::sync::atomic::AtomicBool; // do not lint: type implements `Drop` but not all fields are `Copy` #[derive(Clone, Default)] diff --git a/src/tools/clippy/tests/ui/float_cmp.rs b/src/tools/clippy/tests/ui/float_cmp.rs index 78dd2c6c01c..a1dfd1954fc 100644 --- a/src/tools/clippy/tests/ui/float_cmp.rs +++ b/src/tools/clippy/tests/ui/float_cmp.rs @@ -8,7 +8,7 @@ clippy::unnecessary_operation, clippy::cast_lossless )] -//@no-rustfix +//@no-rustfix: suggestions have an error margin placeholder use std::ops::Add; const ZERO: f32 = 0.0; diff --git a/src/tools/clippy/tests/ui/float_cmp_const.rs b/src/tools/clippy/tests/ui/float_cmp_const.rs index 08180556437..ba760a18f28 100644 --- a/src/tools/clippy/tests/ui/float_cmp_const.rs +++ b/src/tools/clippy/tests/ui/float_cmp_const.rs @@ -1,5 +1,4 @@ -// does not test any rustfixable lints -//@no-rustfix +//@no-rustfix: suggestions have an error margin placeholder #![warn(clippy::float_cmp_const)] #![allow(clippy::float_cmp)] #![allow(unused, clippy::no_effect, clippy::unnecessary_operation)] diff --git a/src/tools/clippy/tests/ui/float_cmp_const.stderr b/src/tools/clippy/tests/ui/float_cmp_const.stderr index 4f88746e958..e0cd6faf4b3 100644 --- a/src/tools/clippy/tests/ui/float_cmp_const.stderr +++ b/src/tools/clippy/tests/ui/float_cmp_const.stderr @@ -1,5 +1,5 @@ error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:16:5 + --> tests/ui/float_cmp_const.rs:15:5 | LL | 1f32 == ONE; | ^^^^^^^^^^^ help: consider comparing them within some margin of error: `(1f32 - ONE).abs() < error_margin` @@ -8,43 +8,43 @@ LL | 1f32 == ONE; = help: to override `-D warnings` add `#[allow(clippy::float_cmp_const)]` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:18:5 + --> tests/ui/float_cmp_const.rs:17:5 | LL | TWO == ONE; | ^^^^^^^^^^ help: consider comparing them within some margin of error: `(TWO - ONE).abs() < error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:20:5 + --> tests/ui/float_cmp_const.rs:19:5 | LL | TWO != ONE; | ^^^^^^^^^^ help: consider comparing them within some margin of error: `(TWO - ONE).abs() > error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:22:5 + --> tests/ui/float_cmp_const.rs:21:5 | LL | ONE + ONE == TWO; | ^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(ONE + ONE - TWO).abs() < error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:25:5 + --> tests/ui/float_cmp_const.rs:24:5 | LL | x as f32 == ONE; | ^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(x as f32 - ONE).abs() < error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:29:5 + --> tests/ui/float_cmp_const.rs:28:5 | LL | v == ONE; | ^^^^^^^^ help: consider comparing them within some margin of error: `(v - ONE).abs() < error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:31:5 + --> tests/ui/float_cmp_const.rs:30:5 | LL | v != ONE; | ^^^^^^^^ help: consider comparing them within some margin of error: `(v - ONE).abs() > error_margin` error: strict comparison of `f32` or `f64` constant arrays - --> tests/ui/float_cmp_const.rs:64:5 + --> tests/ui/float_cmp_const.rs:63:5 | LL | NON_ZERO_ARRAY == NON_ZERO_ARRAY2; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/float_equality_without_abs.rs b/src/tools/clippy/tests/ui/float_equality_without_abs.rs index 2b67c8bec10..500b3035390 100644 --- a/src/tools/clippy/tests/ui/float_equality_without_abs.rs +++ b/src/tools/clippy/tests/ui/float_equality_without_abs.rs @@ -1,5 +1,5 @@ #![warn(clippy::float_equality_without_abs)] -//@no-rustfix +//@no-rustfix: suggestions cause type ambiguity // FIXME(f16_f128): add tests for these types when abs is available diff --git a/src/tools/clippy/tests/ui/floating_point_arithmetic_nostd.rs b/src/tools/clippy/tests/ui/floating_point_arithmetic_nostd.rs index 47c113d61c0..8ea75fae89b 100644 --- a/src/tools/clippy/tests/ui/floating_point_arithmetic_nostd.rs +++ b/src/tools/clippy/tests/ui/floating_point_arithmetic_nostd.rs @@ -4,7 +4,7 @@ #![no_std] // The following should not lint, as the suggested methods `{f16,f32,f64,f128}.mul_add()` -// and ``{f16,f32,f64,f128}::abs()` are not available in no_std +// and `{f16,f32,f64,f128}::abs()` are not available in no_std pub fn mul_add() { let a: f64 = 1234.567; diff --git a/src/tools/clippy/tests/ui/format_args.fixed b/src/tools/clippy/tests/ui/format_args.fixed index 4d812f6bf1d..20d1e3d9050 100644 --- a/src/tools/clippy/tests/ui/format_args.fixed +++ b/src/tools/clippy/tests/ui/format_args.fixed @@ -8,7 +8,7 @@ clippy::uninlined_format_args )] -use std::io::{stdout, Write}; +use std::io::{Write, stdout}; use std::ops::Deref; use std::panic::Location; diff --git a/src/tools/clippy/tests/ui/format_args.rs b/src/tools/clippy/tests/ui/format_args.rs index d242623feb6..18ab223db78 100644 --- a/src/tools/clippy/tests/ui/format_args.rs +++ b/src/tools/clippy/tests/ui/format_args.rs @@ -8,7 +8,7 @@ clippy::uninlined_format_args )] -use std::io::{stdout, Write}; +use std::io::{Write, stdout}; use std::ops::Deref; use std::panic::Location; diff --git a/src/tools/clippy/tests/ui/format_args_unfixable.rs b/src/tools/clippy/tests/ui/format_args_unfixable.rs index b7492e38b25..f04715f4f01 100644 --- a/src/tools/clippy/tests/ui/format_args_unfixable.rs +++ b/src/tools/clippy/tests/ui/format_args_unfixable.rs @@ -2,7 +2,7 @@ #![allow(unused)] #![allow(clippy::assertions_on_constants, clippy::eq_op, clippy::uninlined_format_args)] -use std::io::{stdout, Error, ErrorKind, Write}; +use std::io::{Error, ErrorKind, Write, stdout}; use std::ops::Deref; use std::panic::Location; diff --git a/src/tools/clippy/tests/ui/get_unwrap.fixed b/src/tools/clippy/tests/ui/get_unwrap.fixed index 62beb195939..2dd3c30a4e2 100644 --- a/src/tools/clippy/tests/ui/get_unwrap.fixed +++ b/src/tools/clippy/tests/ui/get_unwrap.fixed @@ -70,6 +70,7 @@ fn main() { mod issue9909 { #![allow(clippy::identity_op, clippy::unwrap_used, dead_code)] + #[allow(unconditional_panic)] fn reduced() { let f = &[1, 2, 3]; diff --git a/src/tools/clippy/tests/ui/get_unwrap.rs b/src/tools/clippy/tests/ui/get_unwrap.rs index 1e09ff5c67e..94226564cac 100644 --- a/src/tools/clippy/tests/ui/get_unwrap.rs +++ b/src/tools/clippy/tests/ui/get_unwrap.rs @@ -70,6 +70,7 @@ fn main() { mod issue9909 { #![allow(clippy::identity_op, clippy::unwrap_used, dead_code)] + #[allow(unconditional_panic)] fn reduced() { let f = &[1, 2, 3]; diff --git a/src/tools/clippy/tests/ui/get_unwrap.stderr b/src/tools/clippy/tests/ui/get_unwrap.stderr index 0f8b279da1e..8eacb249c60 100644 --- a/src/tools/clippy/tests/ui/get_unwrap.stderr +++ b/src/tools/clippy/tests/ui/get_unwrap.stderr @@ -266,7 +266,7 @@ LL | let _ = some_vec.get_mut(0..1).unwrap().to_vec(); = help: consider using `expect()` to provide a better panic message error: called `.get().unwrap()` on a slice - --> tests/ui/get_unwrap.rs:77:24 + --> tests/ui/get_unwrap.rs:78:24 | LL | let _x: &i32 = f.get(1 + 2).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^ @@ -277,7 +277,7 @@ LL | let _x: &i32 = &f[1 + 2]; | ~~~~~~~~~ error: called `.get().unwrap()` on a slice - --> tests/ui/get_unwrap.rs:80:18 + --> tests/ui/get_unwrap.rs:81:18 | LL | let _x = f.get(1 + 2).unwrap().to_string(); | ^^^^^^^^^^^^^^^^^^^^^ @@ -288,7 +288,7 @@ LL | let _x = f[1 + 2].to_string(); | ~~~~~~~~ error: called `.get().unwrap()` on a slice - --> tests/ui/get_unwrap.rs:83:18 + --> tests/ui/get_unwrap.rs:84:18 | LL | let _x = f.get(1 + 2).unwrap().abs(); | ^^^^^^^^^^^^^^^^^^^^^ @@ -299,7 +299,7 @@ LL | let _x = f[1 + 2].abs(); | ~~~~~~~~ error: called `.get_mut().unwrap()` on a slice - --> tests/ui/get_unwrap.rs:100:33 + --> tests/ui/get_unwrap.rs:101:33 | LL | let b = rest.get_mut(linidx(j, k) - linidx(i, k) - 1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/if_then_some_else_none.fixed b/src/tools/clippy/tests/ui/if_then_some_else_none.fixed index ad13372a68b..1f47dddcbc4 100644 --- a/src/tools/clippy/tests/ui/if_then_some_else_none.fixed +++ b/src/tools/clippy/tests/ui/if_then_some_else_none.fixed @@ -113,6 +113,10 @@ fn issue11394(b: bool, v: Result<(), ()>) -> Result<(), ()> { Ok(()) } +fn issue13407(s: &str) -> Option<bool> { + (s == "1").then(|| true) +} + const fn issue12103(x: u32) -> Option<u32> { // Should not issue an error in `const` context if x > 42 { Some(150) } else { None } diff --git a/src/tools/clippy/tests/ui/if_then_some_else_none.rs b/src/tools/clippy/tests/ui/if_then_some_else_none.rs index 73edbb7da2a..499f008fb87 100644 --- a/src/tools/clippy/tests/ui/if_then_some_else_none.rs +++ b/src/tools/clippy/tests/ui/if_then_some_else_none.rs @@ -131,6 +131,10 @@ fn issue11394(b: bool, v: Result<(), ()>) -> Result<(), ()> { Ok(()) } +fn issue13407(s: &str) -> Option<bool> { + if s == "1" { Some(true) } else { None } +} + const fn issue12103(x: u32) -> Option<u32> { // Should not issue an error in `const` context if x > 42 { Some(150) } else { None } diff --git a/src/tools/clippy/tests/ui/if_then_some_else_none.stderr b/src/tools/clippy/tests/ui/if_then_some_else_none.stderr index aed01e026cb..e7bc66b3ee8 100644 --- a/src/tools/clippy/tests/ui/if_then_some_else_none.stderr +++ b/src/tools/clippy/tests/ui/if_then_some_else_none.stderr @@ -52,5 +52,11 @@ LL | | None LL | | }; | |_____^ help: try: `foo().then(|| { println!("true!"); 150 })` -error: aborting due to 5 previous errors +error: this could be simplified with `bool::then` + --> tests/ui/if_then_some_else_none.rs:135:5 + | +LL | if s == "1" { Some(true) } else { None } + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(s == "1").then(|| true)` + +error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/ignored_unit_patterns.fixed b/src/tools/clippy/tests/ui/ignored_unit_patterns.fixed index 118f0b48895..fde40437309 100644 --- a/src/tools/clippy/tests/ui/ignored_unit_patterns.fixed +++ b/src/tools/clippy/tests/ui/ignored_unit_patterns.fixed @@ -21,15 +21,12 @@ fn main() { let _ = foo().map_err(|()| todo!()); //~^ ERROR: matching over `()` is more explicit - println!( - "{:?}", - match foo() { - Ok(()) => {}, - //~^ ERROR: matching over `()` is more explicit - Err(()) => {}, - //~^ ERROR: matching over `()` is more explicit - } - ); + println!("{:?}", match foo() { + Ok(()) => {}, + //~^ ERROR: matching over `()` is more explicit + Err(()) => {}, + //~^ ERROR: matching over `()` is more explicit + }); } // ignored_unit_patterns in derive macro should be ok diff --git a/src/tools/clippy/tests/ui/ignored_unit_patterns.rs b/src/tools/clippy/tests/ui/ignored_unit_patterns.rs index 92feb9e6c28..528844d76e0 100644 --- a/src/tools/clippy/tests/ui/ignored_unit_patterns.rs +++ b/src/tools/clippy/tests/ui/ignored_unit_patterns.rs @@ -21,15 +21,12 @@ fn main() { let _ = foo().map_err(|_| todo!()); //~^ ERROR: matching over `()` is more explicit - println!( - "{:?}", - match foo() { - Ok(_) => {}, - //~^ ERROR: matching over `()` is more explicit - Err(_) => {}, - //~^ ERROR: matching over `()` is more explicit - } - ); + println!("{:?}", match foo() { + Ok(_) => {}, + //~^ ERROR: matching over `()` is more explicit + Err(_) => {}, + //~^ ERROR: matching over `()` is more explicit + }); } // ignored_unit_patterns in derive macro should be ok diff --git a/src/tools/clippy/tests/ui/ignored_unit_patterns.stderr b/src/tools/clippy/tests/ui/ignored_unit_patterns.stderr index 00a254e3919..54ff4454d6b 100644 --- a/src/tools/clippy/tests/ui/ignored_unit_patterns.stderr +++ b/src/tools/clippy/tests/ui/ignored_unit_patterns.stderr @@ -26,31 +26,31 @@ LL | let _ = foo().map_err(|_| todo!()); | ^ help: use `()` instead of `_`: `()` error: matching over `()` is more explicit - --> tests/ui/ignored_unit_patterns.rs:27:16 + --> tests/ui/ignored_unit_patterns.rs:25:12 | -LL | Ok(_) => {}, - | ^ help: use `()` instead of `_`: `()` +LL | Ok(_) => {}, + | ^ help: use `()` instead of `_`: `()` error: matching over `()` is more explicit - --> tests/ui/ignored_unit_patterns.rs:29:17 + --> tests/ui/ignored_unit_patterns.rs:27:13 | -LL | Err(_) => {}, - | ^ help: use `()` instead of `_`: `()` +LL | Err(_) => {}, + | ^ help: use `()` instead of `_`: `()` error: matching over `()` is more explicit - --> tests/ui/ignored_unit_patterns.rs:41:9 + --> tests/ui/ignored_unit_patterns.rs:38:9 | LL | let _ = foo().unwrap(); | ^ help: use `()` instead of `_`: `()` error: matching over `()` is more explicit - --> tests/ui/ignored_unit_patterns.rs:50:13 + --> tests/ui/ignored_unit_patterns.rs:47:13 | LL | (1, _) => unimplemented!(), | ^ help: use `()` instead of `_`: `()` error: matching over `()` is more explicit - --> tests/ui/ignored_unit_patterns.rs:57:13 + --> tests/ui/ignored_unit_patterns.rs:54:13 | LL | for (x, _) in v { | ^ help: use `()` instead of `_`: `()` diff --git a/src/tools/clippy/tests/ui/implicit_saturating_sub.fixed b/src/tools/clippy/tests/ui/implicit_saturating_sub.fixed index 27f679797dd..81cc1494914 100644 --- a/src/tools/clippy/tests/ui/implicit_saturating_sub.fixed +++ b/src/tools/clippy/tests/ui/implicit_saturating_sub.fixed @@ -184,18 +184,18 @@ fn main() { let mut m = Mock; let mut u_32 = 3000; let a = 200; - let mut _b = 8; + let mut b = 8; if m != 0 { m -= 1; } if a > 0 { - _b -= 1; + b -= 1; } if 0 > a { - _b -= 1; + b -= 1; } if u_32 > 0 { @@ -214,4 +214,11 @@ fn main() { } else if u_32 > 0 { u_32 -= 1; } + + let result = if a < b { + println!("we shouldn't remove this"); + 0 + } else { + a - b + }; } diff --git a/src/tools/clippy/tests/ui/implicit_saturating_sub.rs b/src/tools/clippy/tests/ui/implicit_saturating_sub.rs index 5d7b95d2c65..f73396ebd27 100644 --- a/src/tools/clippy/tests/ui/implicit_saturating_sub.rs +++ b/src/tools/clippy/tests/ui/implicit_saturating_sub.rs @@ -230,18 +230,18 @@ fn main() { let mut m = Mock; let mut u_32 = 3000; let a = 200; - let mut _b = 8; + let mut b = 8; if m != 0 { m -= 1; } if a > 0 { - _b -= 1; + b -= 1; } if 0 > a { - _b -= 1; + b -= 1; } if u_32 > 0 { @@ -260,4 +260,11 @@ fn main() { } else if u_32 > 0 { u_32 -= 1; } + + let result = if a < b { + println!("we shouldn't remove this"); + 0 + } else { + a - b + }; } diff --git a/src/tools/clippy/tests/ui/incompatible_msrv.rs b/src/tools/clippy/tests/ui/incompatible_msrv.rs index 8ef1f554bc3..c23df223d50 100644 --- a/src/tools/clippy/tests/ui/incompatible_msrv.rs +++ b/src/tools/clippy/tests/ui/incompatible_msrv.rs @@ -2,8 +2,8 @@ #![feature(custom_inner_attributes)] #![clippy::msrv = "1.3.0"] -use std::collections::hash_map::Entry; use std::collections::HashMap; +use std::collections::hash_map::Entry; use std::future::Future; use std::thread::sleep; use std::time::Duration; diff --git a/src/tools/clippy/tests/ui/index_refutable_slice/if_let_slice_binding.rs b/src/tools/clippy/tests/ui/index_refutable_slice/if_let_slice_binding.rs index 5bbdabcaad1..a4cb50bd682 100644 --- a/src/tools/clippy/tests/ui/index_refutable_slice/if_let_slice_binding.rs +++ b/src/tools/clippy/tests/ui/index_refutable_slice/if_let_slice_binding.rs @@ -1,5 +1,5 @@ #![deny(clippy::index_refutable_slice)] -#![allow(clippy::uninlined_format_args)] +#![allow(clippy::uninlined_format_args, clippy::needless_lifetimes)] //@no-rustfix: need to change the suggestion to a multipart suggestion diff --git a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.fixed b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.fixed index eeddc2349a1..092e875a255 100644 --- a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.fixed +++ b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.fixed @@ -24,11 +24,8 @@ fn main() { let _a: A = std::ptr::read_volatile(core::ptr::NonNull::dangling().as_ptr()); let _a: A = std::ptr::replace(core::ptr::NonNull::dangling().as_ptr(), A); - - let _slice: *const [usize] = std::ptr::slice_from_raw_parts(core::ptr::NonNull::dangling().as_ptr(), 0); - let _slice: *const [usize] = std::ptr::slice_from_raw_parts(core::ptr::NonNull::dangling().as_ptr(), 0); - - let _slice: *const [usize] = std::ptr::slice_from_raw_parts_mut(core::ptr::NonNull::dangling().as_ptr(), 0); + let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null_mut(), 0); // shouldn't lint + let _slice: *const [usize] = std::ptr::slice_from_raw_parts_mut(std::ptr::null_mut(), 0); std::ptr::swap::<A>(core::ptr::NonNull::dangling().as_ptr(), &mut A); std::ptr::swap::<A>(&mut A, core::ptr::NonNull::dangling().as_ptr()); diff --git a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs index 8569b774084..480b6642a3e 100644 --- a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs +++ b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs @@ -24,10 +24,7 @@ fn main() { let _a: A = std::ptr::read_volatile(std::ptr::null_mut()); let _a: A = std::ptr::replace(std::ptr::null_mut(), A); - - let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null(), 0); - let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null_mut(), 0); - + let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null_mut(), 0); // shouldn't lint let _slice: *const [usize] = std::ptr::slice_from_raw_parts_mut(std::ptr::null_mut(), 0); std::ptr::swap::<A>(std::ptr::null_mut(), &mut A); diff --git a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.stderr b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.stderr index 54d79ba1aeb..a0be2c0ad75 100644 --- a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.stderr +++ b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.stderr @@ -85,70 +85,52 @@ LL | let _a: A = std::ptr::replace(std::ptr::null_mut(), A); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:28:69 - | -LL | let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null(), 0); - | ^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` - -error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:29:69 - | -LL | let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null_mut(), 0); - | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` - -error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:31:73 - | -LL | let _slice: *const [usize] = std::ptr::slice_from_raw_parts_mut(std::ptr::null_mut(), 0); - | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` - -error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:33:29 + --> tests/ui/invalid_null_ptr_usage.rs:30:29 | LL | std::ptr::swap::<A>(std::ptr::null_mut(), &mut A); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:34:37 + --> tests/ui/invalid_null_ptr_usage.rs:31:37 | LL | std::ptr::swap::<A>(&mut A, std::ptr::null_mut()); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:36:44 + --> tests/ui/invalid_null_ptr_usage.rs:33:44 | LL | std::ptr::swap_nonoverlapping::<A>(std::ptr::null_mut(), &mut A, 0); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:37:52 + --> tests/ui/invalid_null_ptr_usage.rs:34:52 | LL | std::ptr::swap_nonoverlapping::<A>(&mut A, std::ptr::null_mut(), 0); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:39:25 + --> tests/ui/invalid_null_ptr_usage.rs:36:25 | LL | std::ptr::write(std::ptr::null_mut(), A); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:41:35 + --> tests/ui/invalid_null_ptr_usage.rs:38:35 | LL | std::ptr::write_unaligned(std::ptr::null_mut(), A); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:43:34 + --> tests/ui/invalid_null_ptr_usage.rs:40:34 | LL | std::ptr::write_volatile(std::ptr::null_mut(), A); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` error: pointer must be non-null - --> tests/ui/invalid_null_ptr_usage.rs:45:40 + --> tests/ui/invalid_null_ptr_usage.rs:42:40 | LL | std::ptr::write_bytes::<usize>(std::ptr::null_mut(), 42, 0); | ^^^^^^^^^^^^^^^^^^^^ help: change this to: `core::ptr::NonNull::dangling().as_ptr()` -error: aborting due to 25 previous errors +error: aborting due to 22 previous errors diff --git a/src/tools/clippy/tests/ui/iter_without_into_iter.rs b/src/tools/clippy/tests/ui/iter_without_into_iter.rs index 3054d848efb..d5b28e45453 100644 --- a/src/tools/clippy/tests/ui/iter_without_into_iter.rs +++ b/src/tools/clippy/tests/ui/iter_without_into_iter.rs @@ -1,6 +1,7 @@ //@no-rustfix //@aux-build:proc_macros.rs #![warn(clippy::iter_without_into_iter)] +#![allow(clippy::needless_lifetimes)] extern crate proc_macros; pub struct S1; diff --git a/src/tools/clippy/tests/ui/iter_without_into_iter.stderr b/src/tools/clippy/tests/ui/iter_without_into_iter.stderr index 382a7606f48..7c42fa1dd89 100644 --- a/src/tools/clippy/tests/ui/iter_without_into_iter.stderr +++ b/src/tools/clippy/tests/ui/iter_without_into_iter.stderr @@ -1,5 +1,5 @@ error: `iter` method without an `IntoIterator` impl for `&S1` - --> tests/ui/iter_without_into_iter.rs:8:5 + --> tests/ui/iter_without_into_iter.rs:9:5 | LL | / pub fn iter(&self) -> std::slice::Iter<'_, u8> { LL | | @@ -22,7 +22,7 @@ LL + } | error: `iter_mut` method without an `IntoIterator` impl for `&mut S1` - --> tests/ui/iter_without_into_iter.rs:12:5 + --> tests/ui/iter_without_into_iter.rs:13:5 | LL | / pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, u8> { LL | | @@ -43,7 +43,7 @@ LL + } | error: `iter` method without an `IntoIterator` impl for `&S3<'a>` - --> tests/ui/iter_without_into_iter.rs:28:5 + --> tests/ui/iter_without_into_iter.rs:29:5 | LL | / pub fn iter(&self) -> std::slice::Iter<'_, u8> { LL | | @@ -64,7 +64,7 @@ LL + } | error: `iter_mut` method without an `IntoIterator` impl for `&mut S3<'a>` - --> tests/ui/iter_without_into_iter.rs:32:5 + --> tests/ui/iter_without_into_iter.rs:33:5 | LL | / pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, u8> { LL | | @@ -85,7 +85,7 @@ LL + } | error: `iter` method without an `IntoIterator` impl for `&S8<T>` - --> tests/ui/iter_without_into_iter.rs:69:5 + --> tests/ui/iter_without_into_iter.rs:70:5 | LL | / pub fn iter(&self) -> std::slice::Iter<'static, T> { LL | | todo!() @@ -105,7 +105,7 @@ LL + } | error: `iter` method without an `IntoIterator` impl for `&S9<T>` - --> tests/ui/iter_without_into_iter.rs:77:5 + --> tests/ui/iter_without_into_iter.rs:78:5 | LL | / pub fn iter(&self) -> std::slice::Iter<'_, T> { LL | | @@ -126,7 +126,7 @@ LL + } | error: `iter_mut` method without an `IntoIterator` impl for `&mut S9<T>` - --> tests/ui/iter_without_into_iter.rs:81:5 + --> tests/ui/iter_without_into_iter.rs:82:5 | LL | / pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, T> { LL | | @@ -147,7 +147,7 @@ LL + } | error: `iter` method without an `IntoIterator` impl for `&Issue12037` - --> tests/ui/iter_without_into_iter.rs:130:13 + --> tests/ui/iter_without_into_iter.rs:131:13 | LL | / fn iter(&self) -> std::slice::Iter<'_, u8> { LL | | todo!() diff --git a/src/tools/clippy/tests/ui/legacy_numeric_constants.fixed b/src/tools/clippy/tests/ui/legacy_numeric_constants.fixed index a6ef8f8c119..3a2294ef4c5 100644 --- a/src/tools/clippy/tests/ui/legacy_numeric_constants.fixed +++ b/src/tools/clippy/tests/ui/legacy_numeric_constants.fixed @@ -22,8 +22,8 @@ macro_rules! b { }; } -use std::u32::MAX; use std::u8::MIN; +use std::u32::MAX; use std::{f64, u32}; #[warn(clippy::legacy_numeric_constants)] @@ -99,8 +99,8 @@ fn allow() { ::std::primitive::u8::MIN; ::std::u8::MIN; ::std::primitive::u8::min_value(); - use std::u64; use std::u8::MIN; + use std::u64; } #[warn(clippy::legacy_numeric_constants)] diff --git a/src/tools/clippy/tests/ui/legacy_numeric_constants.rs b/src/tools/clippy/tests/ui/legacy_numeric_constants.rs index cd633545372..6cb3e694ea1 100644 --- a/src/tools/clippy/tests/ui/legacy_numeric_constants.rs +++ b/src/tools/clippy/tests/ui/legacy_numeric_constants.rs @@ -22,8 +22,8 @@ macro_rules! b { }; } -use std::u32::MAX; use std::u8::MIN; +use std::u32::MAX; use std::{f64, u32}; #[warn(clippy::legacy_numeric_constants)] @@ -99,8 +99,8 @@ fn allow() { ::std::primitive::u8::MIN; ::std::u8::MIN; ::std::primitive::u8::min_value(); - use std::u64; use std::u8::MIN; + use std::u64; } #[warn(clippy::legacy_numeric_constants)] diff --git a/src/tools/clippy/tests/ui/macro_use_imports.fixed b/src/tools/clippy/tests/ui/macro_use_imports.fixed index 38ed5a957e7..28844fab747 100644 --- a/src/tools/clippy/tests/ui/macro_use_imports.fixed +++ b/src/tools/clippy/tests/ui/macro_use_imports.fixed @@ -2,7 +2,7 @@ //@aux-build:macro_use_helper.rs //@aux-build:proc_macro_derive.rs -//@ignore-32bit +//@ignore-bitwidth: 32 #![allow(unused_imports, unreachable_code, unused_variables, dead_code, unused_attributes)] #![allow(clippy::single_component_path_imports)] diff --git a/src/tools/clippy/tests/ui/macro_use_imports.rs b/src/tools/clippy/tests/ui/macro_use_imports.rs index ae6cc16ed27..5381f295989 100644 --- a/src/tools/clippy/tests/ui/macro_use_imports.rs +++ b/src/tools/clippy/tests/ui/macro_use_imports.rs @@ -2,7 +2,7 @@ //@aux-build:macro_use_helper.rs //@aux-build:proc_macro_derive.rs -//@ignore-32bit +//@ignore-bitwidth: 32 #![allow(unused_imports, unreachable_code, unused_variables, dead_code, unused_attributes)] #![allow(clippy::single_component_path_imports)] diff --git a/src/tools/clippy/tests/ui/macro_use_imports_expect.rs b/src/tools/clippy/tests/ui/macro_use_imports_expect.rs index df6d5b9fbab..60cce1d24a2 100644 --- a/src/tools/clippy/tests/ui/macro_use_imports_expect.rs +++ b/src/tools/clippy/tests/ui/macro_use_imports_expect.rs @@ -1,7 +1,7 @@ //@aux-build:macro_rules.rs //@aux-build:macro_use_helper.rs //@aux-build:proc_macro_derive.rs -//@ignore-32bit +//@ignore-bitwidth: 32 #![allow(unused_imports, unreachable_code, unused_variables, dead_code, unused_attributes)] #![allow(clippy::single_component_path_imports)] diff --git a/src/tools/clippy/tests/ui/manual_arithmetic_check-2.rs b/src/tools/clippy/tests/ui/manual_arithmetic_check-2.rs new file mode 100644 index 00000000000..e97e3bdfef7 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_arithmetic_check-2.rs @@ -0,0 +1,35 @@ +//@no-rustfix +#![warn(clippy::implicit_saturating_sub)] +#![allow(arithmetic_overflow)] + +fn main() { + let a = 12u32; + let b = 13u32; + + let result = if a > b { b - a } else { 0 }; + //~^ ERROR: inverted arithmetic check before subtraction + let result = if b < a { b - a } else { 0 }; + //~^ ERROR: inverted arithmetic check before subtraction + + let result = if a > b { 0 } else { a - b }; + //~^ ERROR: inverted arithmetic check before subtraction + let result = if a >= b { 0 } else { a - b }; + //~^ ERROR: inverted arithmetic check before subtraction + let result = if b < a { 0 } else { a - b }; + //~^ ERROR: inverted arithmetic check before subtraction + let result = if b <= a { 0 } else { a - b }; + //~^ ERROR: inverted arithmetic check before subtraction + + let af = 12f32; + let bf = 13f32; + // Should not lint! + let result = if bf < af { 0. } else { af - bf }; + + // Should not lint! + let result = if a < b { + println!("we shouldn't remove this"); + 0 + } else { + a - b + }; +} diff --git a/src/tools/clippy/tests/ui/manual_arithmetic_check-2.stderr b/src/tools/clippy/tests/ui/manual_arithmetic_check-2.stderr new file mode 100644 index 00000000000..4121aa7464f --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_arithmetic_check-2.stderr @@ -0,0 +1,75 @@ +error: inverted arithmetic check before subtraction + --> tests/ui/manual_arithmetic_check-2.rs:9:23 + | +LL | let result = if a > b { b - a } else { 0 }; + | ^ ----- help: try replacing it with: `a - b` + | +note: this subtraction underflows when `b < a` + --> tests/ui/manual_arithmetic_check-2.rs:9:29 + | +LL | let result = if a > b { b - a } else { 0 }; + | ^^^^^ + = note: `#[deny(clippy::inverted_saturating_sub)]` on by default + +error: inverted arithmetic check before subtraction + --> tests/ui/manual_arithmetic_check-2.rs:11:23 + | +LL | let result = if b < a { b - a } else { 0 }; + | ^ ----- help: try replacing it with: `a - b` + | +note: this subtraction underflows when `b < a` + --> tests/ui/manual_arithmetic_check-2.rs:11:29 + | +LL | let result = if b < a { b - a } else { 0 }; + | ^^^^^ + +error: inverted arithmetic check before subtraction + --> tests/ui/manual_arithmetic_check-2.rs:14:23 + | +LL | let result = if a > b { 0 } else { a - b }; + | ^ ----- help: try replacing it with: `b - a` + | +note: this subtraction underflows when `a < b` + --> tests/ui/manual_arithmetic_check-2.rs:14:40 + | +LL | let result = if a > b { 0 } else { a - b }; + | ^^^^^ + +error: inverted arithmetic check before subtraction + --> tests/ui/manual_arithmetic_check-2.rs:16:23 + | +LL | let result = if a >= b { 0 } else { a - b }; + | ^^ ----- help: try replacing it with: `b - a` + | +note: this subtraction underflows when `a < b` + --> tests/ui/manual_arithmetic_check-2.rs:16:41 + | +LL | let result = if a >= b { 0 } else { a - b }; + | ^^^^^ + +error: inverted arithmetic check before subtraction + --> tests/ui/manual_arithmetic_check-2.rs:18:23 + | +LL | let result = if b < a { 0 } else { a - b }; + | ^ ----- help: try replacing it with: `b - a` + | +note: this subtraction underflows when `a < b` + --> tests/ui/manual_arithmetic_check-2.rs:18:40 + | +LL | let result = if b < a { 0 } else { a - b }; + | ^^^^^ + +error: inverted arithmetic check before subtraction + --> tests/ui/manual_arithmetic_check-2.rs:20:23 + | +LL | let result = if b <= a { 0 } else { a - b }; + | ^^ ----- help: try replacing it with: `b - a` + | +note: this subtraction underflows when `a < b` + --> tests/ui/manual_arithmetic_check-2.rs:20:41 + | +LL | let result = if b <= a { 0 } else { a - b }; + | ^^^^^ + +error: aborting due to 6 previous errors + diff --git a/src/tools/clippy/tests/ui/manual_arithmetic_check.fixed b/src/tools/clippy/tests/ui/manual_arithmetic_check.fixed new file mode 100644 index 00000000000..29ecbb9ad2a --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_arithmetic_check.fixed @@ -0,0 +1,24 @@ +#![warn(clippy::implicit_saturating_sub, clippy::inverted_saturating_sub)] +#![allow(clippy::if_same_then_else)] + +fn main() { + let a = 12u32; + let b = 13u32; + let c = 8u32; + + let result = a.saturating_sub(b); + //~^ ERROR: manual arithmetic check found + let result = a.saturating_sub(b); + //~^ ERROR: manual arithmetic check found + + let result = a.saturating_sub(b); + //~^ ERROR: manual arithmetic check found + let result = a.saturating_sub(b); + //~^ ERROR: manual arithmetic check found + + // Should not warn! + let result = if a > b { a - b } else { a - c }; + + // Just to check it won't break clippy. + let result = if b > a { 0 } else { 0 }; +} diff --git a/src/tools/clippy/tests/ui/manual_arithmetic_check.rs b/src/tools/clippy/tests/ui/manual_arithmetic_check.rs new file mode 100644 index 00000000000..69554c6b61c --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_arithmetic_check.rs @@ -0,0 +1,24 @@ +#![warn(clippy::implicit_saturating_sub, clippy::inverted_saturating_sub)] +#![allow(clippy::if_same_then_else)] + +fn main() { + let a = 12u32; + let b = 13u32; + let c = 8u32; + + let result = if a > b { a - b } else { 0 }; + //~^ ERROR: manual arithmetic check found + let result = if b < a { a - b } else { 0 }; + //~^ ERROR: manual arithmetic check found + + let result = if a < b { 0 } else { a - b }; + //~^ ERROR: manual arithmetic check found + let result = if b > a { 0 } else { a - b }; + //~^ ERROR: manual arithmetic check found + + // Should not warn! + let result = if a > b { a - b } else { a - c }; + + // Just to check it won't break clippy. + let result = if b > a { 0 } else { 0 }; +} diff --git a/src/tools/clippy/tests/ui/manual_arithmetic_check.stderr b/src/tools/clippy/tests/ui/manual_arithmetic_check.stderr new file mode 100644 index 00000000000..b0cf73cd915 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_arithmetic_check.stderr @@ -0,0 +1,29 @@ +error: manual arithmetic check found + --> tests/ui/manual_arithmetic_check.rs:9:18 + | +LL | let result = if a > b { a - b } else { 0 }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)` + | + = note: `-D clippy::implicit-saturating-sub` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::implicit_saturating_sub)]` + +error: manual arithmetic check found + --> tests/ui/manual_arithmetic_check.rs:11:18 + | +LL | let result = if b < a { a - b } else { 0 }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)` + +error: manual arithmetic check found + --> tests/ui/manual_arithmetic_check.rs:14:18 + | +LL | let result = if a < b { 0 } else { a - b }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)` + +error: manual arithmetic check found + --> tests/ui/manual_arithmetic_check.rs:16:18 + | +LL | let result = if b > a { 0 } else { a - b }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `a.saturating_sub(b)` + +error: aborting due to 4 previous errors + diff --git a/src/tools/clippy/tests/ui/manual_div_ceil.fixed b/src/tools/clippy/tests/ui/manual_div_ceil.fixed new file mode 100644 index 00000000000..e7801f7376a --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_div_ceil.fixed @@ -0,0 +1,30 @@ +#![warn(clippy::manual_div_ceil)] + +fn main() { + let x = 7_u32; + let y = 4_u32; + let z = 11_u32; + + // Lint + let _ = x.div_ceil(y); //~ ERROR: manually reimplementing `div_ceil` + let _ = x.div_ceil(y); //~ ERROR: manually reimplementing `div_ceil` + let _ = x.div_ceil(y); //~ ERROR: manually reimplementing `div_ceil` + + let _ = 7_u32.div_ceil(4); //~ ERROR: manually reimplementing `div_ceil` + let _ = (7_i32 as u32).div_ceil(4); //~ ERROR: manually reimplementing `div_ceil` + + // No lint + let _ = (x + (y - 2)) / y; + let _ = (x + (y + 1)) / y; + + let _ = (x + (y - 1)) / z; + + let x_i = 7_i32; + let y_i = 4_i32; + let z_i = 11_i32; + + // No lint because `int_roundings` feature is not enabled. + let _ = (z as i32 + (y_i - 1)) / y_i; + let _ = (7_u32 as i32 + (y_i - 1)) / y_i; + let _ = (7_u32 as i32 + (4 - 1)) / 4; +} diff --git a/src/tools/clippy/tests/ui/manual_div_ceil.rs b/src/tools/clippy/tests/ui/manual_div_ceil.rs new file mode 100644 index 00000000000..2de74c7eaa8 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_div_ceil.rs @@ -0,0 +1,30 @@ +#![warn(clippy::manual_div_ceil)] + +fn main() { + let x = 7_u32; + let y = 4_u32; + let z = 11_u32; + + // Lint + let _ = (x + (y - 1)) / y; //~ ERROR: manually reimplementing `div_ceil` + let _ = ((y - 1) + x) / y; //~ ERROR: manually reimplementing `div_ceil` + let _ = (x + y - 1) / y; //~ ERROR: manually reimplementing `div_ceil` + + let _ = (7_u32 + (4 - 1)) / 4; //~ ERROR: manually reimplementing `div_ceil` + let _ = (7_i32 as u32 + (4 - 1)) / 4; //~ ERROR: manually reimplementing `div_ceil` + + // No lint + let _ = (x + (y - 2)) / y; + let _ = (x + (y + 1)) / y; + + let _ = (x + (y - 1)) / z; + + let x_i = 7_i32; + let y_i = 4_i32; + let z_i = 11_i32; + + // No lint because `int_roundings` feature is not enabled. + let _ = (z as i32 + (y_i - 1)) / y_i; + let _ = (7_u32 as i32 + (y_i - 1)) / y_i; + let _ = (7_u32 as i32 + (4 - 1)) / 4; +} diff --git a/src/tools/clippy/tests/ui/manual_div_ceil.stderr b/src/tools/clippy/tests/ui/manual_div_ceil.stderr new file mode 100644 index 00000000000..dc652dff405 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_div_ceil.stderr @@ -0,0 +1,35 @@ +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:9:13 + | +LL | let _ = (x + (y - 1)) / y; + | ^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` + | + = note: `-D clippy::manual-div-ceil` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_div_ceil)]` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:10:13 + | +LL | let _ = ((y - 1) + x) / y; + | ^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:11:13 + | +LL | let _ = (x + y - 1) / y; + | ^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:13:13 + | +LL | let _ = (7_u32 + (4 - 1)) / 4; + | ^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `7_u32.div_ceil(4)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:14:13 + | +LL | let _ = (7_i32 as u32 + (4 - 1)) / 4; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `(7_i32 as u32).div_ceil(4)` + +error: aborting due to 5 previous errors + diff --git a/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.fixed b/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.fixed new file mode 100644 index 00000000000..a1d678c6689 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.fixed @@ -0,0 +1,25 @@ +#![warn(clippy::manual_div_ceil)] +#![feature(int_roundings)] + +fn main() { + let x = 7_i32; + let y = 4_i32; + let z = 3_i32; + let z_u: u32 = 11; + + // Lint. + let _ = x.div_ceil(y); + let _ = x.div_ceil(y); + let _ = x.div_ceil(y); + + let _ = 7_i32.div_ceil(4); + let _ = (7_i32 as u32).div_ceil(4); + let _ = (7_u32 as i32).div_ceil(4); + let _ = z_u.div_ceil(4); + + // No lint. + let _ = (x + (y - 2)) / y; + let _ = (x + (y + 1)) / y; + + let _ = (x + (y - 1)) / z; +} diff --git a/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.rs b/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.rs new file mode 100644 index 00000000000..58cb1dbe34d --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.rs @@ -0,0 +1,25 @@ +#![warn(clippy::manual_div_ceil)] +#![feature(int_roundings)] + +fn main() { + let x = 7_i32; + let y = 4_i32; + let z = 3_i32; + let z_u: u32 = 11; + + // Lint. + let _ = (x + (y - 1)) / y; + let _ = ((y - 1) + x) / y; + let _ = (x + y - 1) / y; + + let _ = (7_i32 + (4 - 1)) / 4; + let _ = (7_i32 as u32 + (4 - 1)) / 4; + let _ = (7_u32 as i32 + (4 - 1)) / 4; + let _ = (z_u + (4 - 1)) / 4; + + // No lint. + let _ = (x + (y - 2)) / y; + let _ = (x + (y + 1)) / y; + + let _ = (x + (y - 1)) / z; +} diff --git a/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.stderr b/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.stderr new file mode 100644 index 00000000000..361ef9bd9f4 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_div_ceil_with_feature.stderr @@ -0,0 +1,47 @@ +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:11:13 + | +LL | let _ = (x + (y - 1)) / y; + | ^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` + | + = note: `-D clippy::manual-div-ceil` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_div_ceil)]` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:12:13 + | +LL | let _ = ((y - 1) + x) / y; + | ^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:13:13 + | +LL | let _ = (x + y - 1) / y; + | ^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:15:13 + | +LL | let _ = (7_i32 + (4 - 1)) / 4; + | ^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `7_i32.div_ceil(4)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:16:13 + | +LL | let _ = (7_i32 as u32 + (4 - 1)) / 4; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `(7_i32 as u32).div_ceil(4)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:17:13 + | +LL | let _ = (7_u32 as i32 + (4 - 1)) / 4; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `(7_u32 as i32).div_ceil(4)` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil_with_feature.rs:18:13 + | +LL | let _ = (z_u + (4 - 1)) / 4; + | ^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `z_u.div_ceil(4)` + +error: aborting due to 7 previous errors + diff --git a/src/tools/clippy/tests/ui/manual_is_power_of_two.fixed b/src/tools/clippy/tests/ui/manual_is_power_of_two.fixed new file mode 100644 index 00000000000..dda5fe0ec3e --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_is_power_of_two.fixed @@ -0,0 +1,20 @@ +#![warn(clippy::manual_is_power_of_two)] + +fn main() { + let a = 16_u64; + + let _ = a.is_power_of_two(); + let _ = a.is_power_of_two(); + + // Test different orders of expression + let _ = a.is_power_of_two(); + let _ = a.is_power_of_two(); + let _ = a.is_power_of_two(); + let _ = a.is_power_of_two(); + + let b = 4_i64; + + // is_power_of_two only works for unsigned integers + let _ = b.count_ones() == 1; + let _ = b & (b - 1) == 0; +} diff --git a/src/tools/clippy/tests/ui/manual_is_power_of_two.rs b/src/tools/clippy/tests/ui/manual_is_power_of_two.rs new file mode 100644 index 00000000000..a1d3a95c410 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_is_power_of_two.rs @@ -0,0 +1,20 @@ +#![warn(clippy::manual_is_power_of_two)] + +fn main() { + let a = 16_u64; + + let _ = a.count_ones() == 1; + let _ = a & (a - 1) == 0; + + // Test different orders of expression + let _ = 1 == a.count_ones(); + let _ = (a - 1) & a == 0; + let _ = 0 == a & (a - 1); + let _ = 0 == (a - 1) & a; + + let b = 4_i64; + + // is_power_of_two only works for unsigned integers + let _ = b.count_ones() == 1; + let _ = b & (b - 1) == 0; +} diff --git a/src/tools/clippy/tests/ui/manual_is_power_of_two.stderr b/src/tools/clippy/tests/ui/manual_is_power_of_two.stderr new file mode 100644 index 00000000000..3cfc6297abf --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_is_power_of_two.stderr @@ -0,0 +1,41 @@ +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:6:13 + | +LL | let _ = a.count_ones() == 1; + | ^^^^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + | + = note: `-D clippy::manual-is-power-of-two` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_is_power_of_two)]` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:7:13 + | +LL | let _ = a & (a - 1) == 0; + | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:10:13 + | +LL | let _ = 1 == a.count_ones(); + | ^^^^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:11:13 + | +LL | let _ = (a - 1) & a == 0; + | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:12:13 + | +LL | let _ = 0 == a & (a - 1); + | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:13:13 + | +LL | let _ = 0 == (a - 1) & a; + | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: aborting due to 6 previous errors + diff --git a/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs b/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs index 31c3cc80137..ffe2bb92467 100644 --- a/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs +++ b/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs @@ -1,8 +1,8 @@ #![warn(clippy::manual_non_exhaustive)] #![allow(unused)] //@no-rustfix -enum E { - //~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern +pub enum E { + //~^ manual_non_exhaustive A, B, #[doc(hidden)] @@ -11,7 +11,7 @@ enum E { // if the user explicitly marks as nonexhaustive we shouldn't warn them #[non_exhaustive] -enum Ep { +pub enum Ep { A, B, #[doc(hidden)] @@ -19,14 +19,14 @@ enum Ep { } // marker variant does not have doc hidden attribute, should be ignored -enum NoDocHidden { +pub enum NoDocHidden { A, B, _C, } // name of variant with doc hidden does not start with underscore -enum NoUnderscore { +pub enum NoUnderscore { A, B, #[doc(hidden)] @@ -34,7 +34,7 @@ enum NoUnderscore { } // variant with doc hidden is not unit, should be ignored -enum NotUnit { +pub enum NotUnit { A, B, #[doc(hidden)] @@ -42,13 +42,13 @@ enum NotUnit { } // variant with doc hidden is the only one, should be ignored -enum OnlyMarker { +pub enum OnlyMarker { #[doc(hidden)] _A, } // variant with multiple markers, should be ignored -enum MultipleMarkers { +pub enum MultipleMarkers { A, #[doc(hidden)] _B, @@ -58,13 +58,13 @@ enum MultipleMarkers { // already non_exhaustive and no markers, should be ignored #[non_exhaustive] -enum NonExhaustive { +pub enum NonExhaustive { A, B, } // marked is used, don't lint -enum UsedHidden { +pub enum UsedHidden { #[doc(hidden)] _A, B, @@ -77,11 +77,9 @@ fn foo(x: &mut UsedHidden) { } #[expect(clippy::manual_non_exhaustive)] -enum ExpectLint { +pub enum ExpectLint { A, B, #[doc(hidden)] _C, } - -fn main() {} diff --git a/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.stderr b/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.stderr index dc669568dd2..0a9ac157f85 100644 --- a/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.stderr +++ b/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.stderr @@ -1,11 +1,7 @@ error: this seems like a manual implementation of the non-exhaustive pattern --> tests/ui/manual_non_exhaustive_enum.rs:4:1 | -LL | enum E { - | ^----- - | | - | _help: add the attribute: `#[non_exhaustive] enum E` - | | +LL | / pub enum E { LL | | LL | | A, LL | | B, @@ -21,15 +17,16 @@ LL | _C, | ^^ = note: `-D clippy::manual-non-exhaustive` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::manual_non_exhaustive)]` +help: use the `#[non_exhaustive]` attribute instead + | +LL + #[non_exhaustive] +LL | pub enum E { + | error: this seems like a manual implementation of the non-exhaustive pattern --> tests/ui/manual_non_exhaustive_enum.rs:29:1 | -LL | enum NoUnderscore { - | ^---------------- - | | - | _help: add the attribute: `#[non_exhaustive] enum NoUnderscore` - | | +LL | / pub enum NoUnderscore { LL | | A, LL | | B, LL | | #[doc(hidden)] @@ -42,6 +39,11 @@ help: remove this variant | LL | C, | ^ +help: use the `#[non_exhaustive]` attribute instead + | +LL + #[non_exhaustive] +LL | pub enum NoUnderscore { + | error: aborting due to 2 previous errors diff --git a/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.rs b/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.rs index 4b2803ccc4a..31dd50281fa 100644 --- a/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.rs +++ b/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.rs @@ -1,9 +1,9 @@ #![warn(clippy::manual_non_exhaustive)] #![allow(unused)] //@no-rustfix -mod structs { - struct S { - //~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern +pub mod structs { + pub struct S { + //~^ manual_non_exhaustive pub a: i32, pub b: i32, _c: (), @@ -11,68 +11,76 @@ mod structs { // user forgot to remove the private field #[non_exhaustive] - struct Sp { - //~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern + pub struct Sp { + //~^ manual_non_exhaustive pub a: i32, pub b: i32, _c: (), } // some other fields are private, should be ignored - struct PrivateFields { + pub struct PrivateFields { a: i32, pub b: i32, _c: (), } - // private field name does not start with underscore, should be ignored - struct NoUnderscore { + pub struct NoUnderscore { + //~^ manual_non_exhaustive pub a: i32, pub b: i32, c: (), } // private field is not unit type, should be ignored - struct NotUnit { + pub struct NotUnit { pub a: i32, pub b: i32, _c: i32, } // private field is the only field, should be ignored - struct OnlyMarker { + pub struct OnlyMarker { _a: (), } // already non exhaustive and no private fields, should be ignored #[non_exhaustive] - struct NonExhaustive { + pub struct NonExhaustive { pub a: i32, pub b: i32, } } -mod tuple_structs { - struct T(pub i32, pub i32, ()); - //~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern +pub mod tuple_structs { + pub struct T(pub i32, pub i32, ()); + //~^ manual_non_exhaustive // user forgot to remove the private field #[non_exhaustive] - struct Tp(pub i32, pub i32, ()); - //~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern + pub struct Tp(pub i32, pub i32, ()); + //~^ manual_non_exhaustive // some other fields are private, should be ignored - struct PrivateFields(pub i32, i32, ()); + pub struct PrivateFields(pub i32, i32, ()); // private field is not unit type, should be ignored - struct NotUnit(pub i32, pub i32, i32); + pub struct NotUnit(pub i32, pub i32, i32); // private field is the only field, should be ignored - struct OnlyMarker(()); + pub struct OnlyMarker(()); // already non exhaustive and no private fields, should be ignored #[non_exhaustive] - struct NonExhaustive(pub i32, pub i32); + pub struct NonExhaustive(pub i32, pub i32); } -fn main() {} +mod private { + // Don't lint structs that are not actually public as `#[non_exhaustive]` only applies to + // external crates. The manual pattern can still be used to get module local non exhaustiveness + pub struct NotPublic { + pub a: i32, + pub b: i32, + _c: (), + } +} diff --git a/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.stderr b/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.stderr index 1cab812988a..81de1e4f271 100644 --- a/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.stderr +++ b/src/tools/clippy/tests/ui/manual_non_exhaustive_struct.stderr @@ -1,11 +1,7 @@ error: this seems like a manual implementation of the non-exhaustive pattern --> tests/ui/manual_non_exhaustive_struct.rs:5:5 | -LL | struct S { - | ^------- - | | - | _____help: add the attribute: `#[non_exhaustive] struct S` - | | +LL | / pub struct S { LL | | LL | | pub a: i32, LL | | pub b: i32, @@ -20,11 +16,16 @@ LL | _c: (), | ^^^^^^ = note: `-D clippy::manual-non-exhaustive` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::manual_non_exhaustive)]` +help: use the `#[non_exhaustive]` attribute instead + | +LL ~ #[non_exhaustive] +LL ~ pub struct S { + | error: this seems like a manual implementation of the non-exhaustive pattern --> tests/ui/manual_non_exhaustive_struct.rs:14:5 | -LL | / struct Sp { +LL | / pub struct Sp { LL | | LL | | pub a: i32, LL | | pub b: i32, @@ -32,6 +33,11 @@ LL | | _c: (), LL | | } | |_____^ | +note: the struct is already non-exhaustive + --> tests/ui/manual_non_exhaustive_struct.rs:13:5 + | +LL | #[non_exhaustive] + | ^^^^^^^^^^^^^^^^^ help: remove this field --> tests/ui/manual_non_exhaustive_struct.rs:18:9 | @@ -39,13 +45,10 @@ LL | _c: (), | ^^^^^^ error: this seems like a manual implementation of the non-exhaustive pattern - --> tests/ui/manual_non_exhaustive_struct.rs:29:5 + --> tests/ui/manual_non_exhaustive_struct.rs:28:5 | -LL | struct NoUnderscore { - | ^------------------ - | | - | _____help: add the attribute: `#[non_exhaustive] struct NoUnderscore` - | | +LL | / pub struct NoUnderscore { +LL | | LL | | pub a: i32, LL | | pub b: i32, LL | | c: (), @@ -57,32 +60,45 @@ help: remove this field | LL | c: (), | ^^^^^ +help: use the `#[non_exhaustive]` attribute instead + | +LL ~ #[non_exhaustive] +LL ~ pub struct NoUnderscore { + | error: this seems like a manual implementation of the non-exhaustive pattern --> tests/ui/manual_non_exhaustive_struct.rs:56:5 | -LL | struct T(pub i32, pub i32, ()); - | --------^^^^^^^^^^^^^^^^^^^^^^^ - | | - | help: add the attribute: `#[non_exhaustive] struct T` +LL | pub struct T(pub i32, pub i32, ()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: remove this field - --> tests/ui/manual_non_exhaustive_struct.rs:56:32 + --> tests/ui/manual_non_exhaustive_struct.rs:56:36 + | +LL | pub struct T(pub i32, pub i32, ()); + | ^^ +help: use the `#[non_exhaustive]` attribute instead + | +LL ~ #[non_exhaustive] +LL ~ pub struct T(pub i32, pub i32, ()); | -LL | struct T(pub i32, pub i32, ()); - | ^^ error: this seems like a manual implementation of the non-exhaustive pattern --> tests/ui/manual_non_exhaustive_struct.rs:61:5 | -LL | struct Tp(pub i32, pub i32, ()); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | pub struct Tp(pub i32, pub i32, ()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: the struct is already non-exhaustive + --> tests/ui/manual_non_exhaustive_struct.rs:60:5 | +LL | #[non_exhaustive] + | ^^^^^^^^^^^^^^^^^ help: remove this field - --> tests/ui/manual_non_exhaustive_struct.rs:61:33 + --> tests/ui/manual_non_exhaustive_struct.rs:61:37 | -LL | struct Tp(pub i32, pub i32, ()); - | ^^ +LL | pub struct Tp(pub i32, pub i32, ()); + | ^^ error: aborting due to 5 previous errors diff --git a/src/tools/clippy/tests/ui/manual_range_patterns.fixed b/src/tools/clippy/tests/ui/manual_range_patterns.fixed index f1b99637afd..60467bf9e88 100644 --- a/src/tools/clippy/tests/ui/manual_range_patterns.fixed +++ b/src/tools/clippy/tests/ui/manual_range_patterns.fixed @@ -45,4 +45,12 @@ fn main() { }; } mac!(f); + + #[rustfmt::skip] + let _ = match f { + | 2..=15 => 4, + | 241..=254 => 5, + | 255 => 6, + | _ => 7, + }; } diff --git a/src/tools/clippy/tests/ui/manual_range_patterns.rs b/src/tools/clippy/tests/ui/manual_range_patterns.rs index 869ffbe80b9..9cd80333449 100644 --- a/src/tools/clippy/tests/ui/manual_range_patterns.rs +++ b/src/tools/clippy/tests/ui/manual_range_patterns.rs @@ -45,4 +45,12 @@ fn main() { }; } mac!(f); + + #[rustfmt::skip] + let _ = match f { + | 2..=15 => 4, + | 241..=254 => 5, + | 255 => 6, + | _ => 7, + }; } diff --git a/src/tools/clippy/tests/ui/manual_saturating_arithmetic.fixed b/src/tools/clippy/tests/ui/manual_saturating_arithmetic.fixed index 41a32df32ee..528a65790c4 100644 --- a/src/tools/clippy/tests/ui/manual_saturating_arithmetic.fixed +++ b/src/tools/clippy/tests/ui/manual_saturating_arithmetic.fixed @@ -1,6 +1,6 @@ #![allow(clippy::legacy_numeric_constants, unused_imports)] -use std::{i128, i32, u128, u32}; +use std::{i32, i128, u32, u128}; fn main() { let _ = 1u32.saturating_add(1); diff --git a/src/tools/clippy/tests/ui/manual_saturating_arithmetic.rs b/src/tools/clippy/tests/ui/manual_saturating_arithmetic.rs index 3a6b32d8069..55f3720dfcc 100644 --- a/src/tools/clippy/tests/ui/manual_saturating_arithmetic.rs +++ b/src/tools/clippy/tests/ui/manual_saturating_arithmetic.rs @@ -1,6 +1,6 @@ #![allow(clippy::legacy_numeric_constants, unused_imports)] -use std::{i128, i32, u128, u32}; +use std::{i32, i128, u32, u128}; fn main() { let _ = 1u32.checked_add(1).unwrap_or(u32::max_value()); diff --git a/src/tools/clippy/tests/ui/match_overlapping_arm.rs b/src/tools/clippy/tests/ui/match_overlapping_arm.rs index 4457ae73da2..a056fdeaa5d 100644 --- a/src/tools/clippy/tests/ui/match_overlapping_arm.rs +++ b/src/tools/clippy/tests/ui/match_overlapping_arm.rs @@ -2,8 +2,6 @@ #![allow(clippy::redundant_pattern_matching)] #![allow(clippy::if_same_then_else, clippy::equatable_if_let, clippy::needless_if)] -/// Tests for match_overlapping_arm - fn overlapping() { const FOO: u64 = 2; diff --git a/src/tools/clippy/tests/ui/match_overlapping_arm.stderr b/src/tools/clippy/tests/ui/match_overlapping_arm.stderr index 65092ffbb55..a60a09a0799 100644 --- a/src/tools/clippy/tests/ui/match_overlapping_arm.stderr +++ b/src/tools/clippy/tests/ui/match_overlapping_arm.stderr @@ -1,11 +1,11 @@ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:11:9 + --> tests/ui/match_overlapping_arm.rs:9:9 | LL | 0..=10 => println!("0..=10"), | ^^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:13:9 + --> tests/ui/match_overlapping_arm.rs:11:9 | LL | 0..=11 => println!("0..=11"), | ^^^^^^ @@ -13,85 +13,85 @@ LL | 0..=11 => println!("0..=11"), = help: to override `-D warnings` add `#[allow(clippy::match_overlapping_arm)]` error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:18:9 + --> tests/ui/match_overlapping_arm.rs:16:9 | LL | 0..=5 => println!("0..=5"), | ^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:21:9 + --> tests/ui/match_overlapping_arm.rs:19:9 | LL | FOO..=11 => println!("FOO..=11"), | ^^^^^^^^ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:56:9 + --> tests/ui/match_overlapping_arm.rs:54:9 | LL | 0..11 => println!("0..11"), | ^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:58:9 + --> tests/ui/match_overlapping_arm.rs:56:9 | LL | 0..=11 => println!("0..=11"), | ^^^^^^ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:82:9 + --> tests/ui/match_overlapping_arm.rs:80:9 | LL | 0..=10 => println!("0..=10"), | ^^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:81:9 + --> tests/ui/match_overlapping_arm.rs:79:9 | LL | 5..14 => println!("5..14"), | ^^^^^ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:88:9 + --> tests/ui/match_overlapping_arm.rs:86:9 | LL | 0..7 => println!("0..7"), | ^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:90:9 + --> tests/ui/match_overlapping_arm.rs:88:9 | LL | 0..=10 => println!("0..=10"), | ^^^^^^ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:101:9 + --> tests/ui/match_overlapping_arm.rs:99:9 | LL | ..=23 => println!("..=23"), | ^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:103:9 + --> tests/ui/match_overlapping_arm.rs:101:9 | LL | ..26 => println!("..26"), | ^^^^ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:111:9 + --> tests/ui/match_overlapping_arm.rs:109:9 | LL | 21..=30 => (), | ^^^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:113:9 + --> tests/ui/match_overlapping_arm.rs:111:9 | LL | 21..=40 => (), | ^^^^^^^ error: some ranges overlap - --> tests/ui/match_overlapping_arm.rs:126:9 + --> tests/ui/match_overlapping_arm.rs:124:9 | LL | 0..=0x0000_0000_0000_00ff => (), | ^^^^^^^^^^^^^^^^^^^^^^^^^ | note: overlaps with this - --> tests/ui/match_overlapping_arm.rs:128:9 + --> tests/ui/match_overlapping_arm.rs:126:9 | LL | 0..=0x0000_0000_0000_ffff => (), | ^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/mem_replace.fixed b/src/tools/clippy/tests/ui/mem_replace.fixed index 78d8b3e9bce..4210dbbe82d 100644 --- a/src/tools/clippy/tests/ui/mem_replace.fixed +++ b/src/tools/clippy/tests/ui/mem_replace.fixed @@ -1,6 +1,5 @@ -#![allow(unused)] +#![allow(unused, clippy::needless_lifetimes)] #![warn( - clippy::all, clippy::style, clippy::mem_replace_option_with_none, clippy::mem_replace_with_default diff --git a/src/tools/clippy/tests/ui/mem_replace.rs b/src/tools/clippy/tests/ui/mem_replace.rs index 28915bf6dae..bd7ad78b2af 100644 --- a/src/tools/clippy/tests/ui/mem_replace.rs +++ b/src/tools/clippy/tests/ui/mem_replace.rs @@ -1,6 +1,5 @@ -#![allow(unused)] +#![allow(unused, clippy::needless_lifetimes)] #![warn( - clippy::all, clippy::style, clippy::mem_replace_option_with_none, clippy::mem_replace_with_default diff --git a/src/tools/clippy/tests/ui/mem_replace.stderr b/src/tools/clippy/tests/ui/mem_replace.stderr index 44be2c9b63d..c33f80b01b8 100644 --- a/src/tools/clippy/tests/ui/mem_replace.stderr +++ b/src/tools/clippy/tests/ui/mem_replace.stderr @@ -1,5 +1,5 @@ error: replacing an `Option` with `None` - --> tests/ui/mem_replace.rs:14:13 + --> tests/ui/mem_replace.rs:13:13 | LL | let _ = mem::replace(&mut an_option, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `an_option.take()` @@ -8,13 +8,13 @@ LL | let _ = mem::replace(&mut an_option, None); = help: to override `-D warnings` add `#[allow(clippy::mem_replace_option_with_none)]` error: replacing an `Option` with `None` - --> tests/ui/mem_replace.rs:16:13 + --> tests/ui/mem_replace.rs:15:13 | LL | let _ = mem::replace(an_option, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `an_option.take()` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:21:13 + --> tests/ui/mem_replace.rs:20:13 | LL | let _ = std::mem::replace(&mut s, String::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut s)` @@ -23,127 +23,127 @@ LL | let _ = std::mem::replace(&mut s, String::default()); = help: to override `-D warnings` add `#[allow(clippy::mem_replace_with_default)]` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:24:13 + --> tests/ui/mem_replace.rs:23:13 | LL | let _ = std::mem::replace(s, String::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(s)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:25:13 + --> tests/ui/mem_replace.rs:24:13 | LL | let _ = std::mem::replace(s, Default::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(s)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:28:13 + --> tests/ui/mem_replace.rs:27:13 | LL | let _ = std::mem::replace(&mut v, Vec::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut v)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:29:13 + --> tests/ui/mem_replace.rs:28:13 | LL | let _ = std::mem::replace(&mut v, Default::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut v)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:30:13 + --> tests/ui/mem_replace.rs:29:13 | LL | let _ = std::mem::replace(&mut v, Vec::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut v)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:31:13 + --> tests/ui/mem_replace.rs:30:13 | LL | let _ = std::mem::replace(&mut v, vec![]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut v)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:34:13 + --> tests/ui/mem_replace.rs:33:13 | LL | let _ = std::mem::replace(&mut hash_map, HashMap::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut hash_map)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:37:13 + --> tests/ui/mem_replace.rs:36:13 | LL | let _ = std::mem::replace(&mut btree_map, BTreeMap::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut btree_map)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:40:13 + --> tests/ui/mem_replace.rs:39:13 | LL | let _ = std::mem::replace(&mut vd, VecDeque::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut vd)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:43:13 + --> tests/ui/mem_replace.rs:42:13 | LL | let _ = std::mem::replace(&mut hash_set, HashSet::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut hash_set)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:46:13 + --> tests/ui/mem_replace.rs:45:13 | LL | let _ = std::mem::replace(&mut btree_set, BTreeSet::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut btree_set)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:49:13 + --> tests/ui/mem_replace.rs:48:13 | LL | let _ = std::mem::replace(&mut list, LinkedList::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut list)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:52:13 + --> tests/ui/mem_replace.rs:51:13 | LL | let _ = std::mem::replace(&mut binary_heap, BinaryHeap::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut binary_heap)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:55:13 + --> tests/ui/mem_replace.rs:54:13 | LL | let _ = std::mem::replace(&mut tuple, (vec![], BinaryHeap::new())); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut tuple)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:58:13 + --> tests/ui/mem_replace.rs:57:13 | LL | let _ = std::mem::replace(&mut refstr, ""); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut refstr)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:61:13 + --> tests/ui/mem_replace.rs:60:13 | LL | let _ = std::mem::replace(&mut slice, &[]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut slice)` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:97:13 + --> tests/ui/mem_replace.rs:96:13 | LL | let _ = std::mem::replace(&mut s, String::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut s)` error: replacing an `Option` with `None` - --> tests/ui/mem_replace.rs:127:13 + --> tests/ui/mem_replace.rs:126:13 | LL | let _ = std::mem::replace(&mut f.0, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `f.0.take()` error: replacing an `Option` with `None` - --> tests/ui/mem_replace.rs:128:13 + --> tests/ui/mem_replace.rs:127:13 | LL | let _ = std::mem::replace(&mut *f, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `(*f).take()` error: replacing an `Option` with `None` - --> tests/ui/mem_replace.rs:129:13 + --> tests/ui/mem_replace.rs:128:13 | LL | let _ = std::mem::replace(&mut b.opt, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `b.opt.take()` error: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` - --> tests/ui/mem_replace.rs:131:13 + --> tests/ui/mem_replace.rs:130:13 | LL | let _ = std::mem::replace(&mut b.val, String::default()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut b.val)` diff --git a/src/tools/clippy/tests/ui/mem_replace_no_std.fixed b/src/tools/clippy/tests/ui/mem_replace_no_std.fixed index c970f2ba281..60f523c8ef1 100644 --- a/src/tools/clippy/tests/ui/mem_replace_no_std.fixed +++ b/src/tools/clippy/tests/ui/mem_replace_no_std.fixed @@ -1,6 +1,5 @@ -#![allow(unused)] +#![allow(unused, clippy::needless_lifetimes)] #![warn( - clippy::all, clippy::style, clippy::mem_replace_option_with_none, clippy::mem_replace_with_default diff --git a/src/tools/clippy/tests/ui/mem_replace_no_std.rs b/src/tools/clippy/tests/ui/mem_replace_no_std.rs index 673d5c7b4f4..d1cb9a5817b 100644 --- a/src/tools/clippy/tests/ui/mem_replace_no_std.rs +++ b/src/tools/clippy/tests/ui/mem_replace_no_std.rs @@ -1,6 +1,5 @@ -#![allow(unused)] +#![allow(unused, clippy::needless_lifetimes)] #![warn( - clippy::all, clippy::style, clippy::mem_replace_option_with_none, clippy::mem_replace_with_default diff --git a/src/tools/clippy/tests/ui/mem_replace_no_std.stderr b/src/tools/clippy/tests/ui/mem_replace_no_std.stderr index eea538da427..6ba6d2162a7 100644 --- a/src/tools/clippy/tests/ui/mem_replace_no_std.stderr +++ b/src/tools/clippy/tests/ui/mem_replace_no_std.stderr @@ -1,5 +1,5 @@ error: replacing an `Option` with `None` - --> tests/ui/mem_replace_no_std.rs:24:13 + --> tests/ui/mem_replace_no_std.rs:23:13 | LL | let _ = mem::replace(&mut an_option, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `an_option.take()` @@ -8,13 +8,13 @@ LL | let _ = mem::replace(&mut an_option, None); = help: to override `-D warnings` add `#[allow(clippy::mem_replace_option_with_none)]` error: replacing an `Option` with `None` - --> tests/ui/mem_replace_no_std.rs:26:13 + --> tests/ui/mem_replace_no_std.rs:25:13 | LL | let _ = mem::replace(an_option, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `an_option.take()` error: replacing a value of type `T` with `T::default()` is better expressed using `core::mem::take` - --> tests/ui/mem_replace_no_std.rs:31:13 + --> tests/ui/mem_replace_no_std.rs:30:13 | LL | let _ = mem::replace(&mut refstr, ""); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `core::mem::take(&mut refstr)` @@ -23,25 +23,25 @@ LL | let _ = mem::replace(&mut refstr, ""); = help: to override `-D warnings` add `#[allow(clippy::mem_replace_with_default)]` error: replacing a value of type `T` with `T::default()` is better expressed using `core::mem::take` - --> tests/ui/mem_replace_no_std.rs:34:13 + --> tests/ui/mem_replace_no_std.rs:33:13 | LL | let _ = mem::replace(&mut slice, &[]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `core::mem::take(&mut slice)` error: replacing an `Option` with `None` - --> tests/ui/mem_replace_no_std.rs:77:13 + --> tests/ui/mem_replace_no_std.rs:76:13 | LL | let _ = mem::replace(&mut f.0, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `f.0.take()` error: replacing an `Option` with `None` - --> tests/ui/mem_replace_no_std.rs:78:13 + --> tests/ui/mem_replace_no_std.rs:77:13 | LL | let _ = mem::replace(&mut *f, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `(*f).take()` error: replacing an `Option` with `None` - --> tests/ui/mem_replace_no_std.rs:79:13 + --> tests/ui/mem_replace_no_std.rs:78:13 | LL | let _ = mem::replace(&mut b.opt, None); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `b.opt.take()` diff --git a/src/tools/clippy/tests/ui/mismatching_type_param_order.rs b/src/tools/clippy/tests/ui/mismatching_type_param_order.rs index af2882e41fb..a4560f9e9a9 100644 --- a/src/tools/clippy/tests/ui/mismatching_type_param_order.rs +++ b/src/tools/clippy/tests/ui/mismatching_type_param_order.rs @@ -1,5 +1,5 @@ #![warn(clippy::mismatching_type_param_order)] -#![allow(clippy::disallowed_names)] +#![allow(clippy::disallowed_names, clippy::needless_lifetimes)] fn main() { struct Foo<A, B> { diff --git a/src/tools/clippy/tests/ui/mixed_attributes_style.rs b/src/tools/clippy/tests/ui/mixed_attributes_style.rs index 1a646c26522..93ab9392cf8 100644 --- a/src/tools/clippy/tests/ui/mixed_attributes_style.rs +++ b/src/tools/clippy/tests/ui/mixed_attributes_style.rs @@ -82,7 +82,8 @@ mod issue_12530 { #![allow(dead_code)] } } - /// Nested mod //~ ERROR: item has both inner and outer attributes + /// Nested mod + //~^ ERROR: item has both inner and outer attributes #[allow(unused)] mod nest_mod_2 { #![allow(unused)] diff --git a/src/tools/clippy/tests/ui/mixed_attributes_style.stderr b/src/tools/clippy/tests/ui/mixed_attributes_style.stderr index a1d3fc430f6..abdc2df23cf 100644 --- a/src/tools/clippy/tests/ui/mixed_attributes_style.stderr +++ b/src/tools/clippy/tests/ui/mixed_attributes_style.stderr @@ -46,13 +46,14 @@ error: item has both inner and outer attributes --> tests/ui/mixed_attributes_style.rs:85:5 | LL | / /// Nested mod +LL | | LL | | #[allow(unused)] LL | | mod nest_mod_2 { LL | | #![allow(unused)] | |_________________________^ error: item has both inner and outer attributes - --> tests/ui/mixed_attributes_style.rs:90:9 + --> tests/ui/mixed_attributes_style.rs:91:9 | LL | / #[allow(dead_code)] LL | | mod inner_mod { diff --git a/src/tools/clippy/tests/ui/must_use_candidates.fixed b/src/tools/clippy/tests/ui/must_use_candidates.fixed index adb266ffbc8..2459af60688 100644 --- a/src/tools/clippy/tests/ui/must_use_candidates.fixed +++ b/src/tools/clippy/tests/ui/must_use_candidates.fixed @@ -7,8 +7,8 @@ )] #![warn(clippy::must_use_candidate)] use std::rc::Rc; -use std::sync::atomic::{AtomicBool, Ordering}; use std::sync::Arc; +use std::sync::atomic::{AtomicBool, Ordering}; pub struct MyAtomic(AtomicBool); pub struct MyPure; diff --git a/src/tools/clippy/tests/ui/must_use_candidates.rs b/src/tools/clippy/tests/ui/must_use_candidates.rs index 49bb16af788..5f9b2449552 100644 --- a/src/tools/clippy/tests/ui/must_use_candidates.rs +++ b/src/tools/clippy/tests/ui/must_use_candidates.rs @@ -7,8 +7,8 @@ )] #![warn(clippy::must_use_candidate)] use std::rc::Rc; -use std::sync::atomic::{AtomicBool, Ordering}; use std::sync::Arc; +use std::sync::atomic::{AtomicBool, Ordering}; pub struct MyAtomic(AtomicBool); pub struct MyPure; diff --git a/src/tools/clippy/tests/ui/mut_key.rs b/src/tools/clippy/tests/ui/mut_key.rs index 81d8732b3b2..43ff705c477 100644 --- a/src/tools/clippy/tests/ui/mut_key.rs +++ b/src/tools/clippy/tests/ui/mut_key.rs @@ -2,9 +2,9 @@ use std::cell::Cell; use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet}; use std::hash::{Hash, Hasher}; use std::rc::Rc; +use std::sync::Arc; use std::sync::atomic::AtomicUsize; use std::sync::atomic::Ordering::Relaxed; -use std::sync::Arc; struct Key(AtomicUsize); diff --git a/src/tools/clippy/tests/ui/mut_mutex_lock.fixed b/src/tools/clippy/tests/ui/mut_mutex_lock.fixed index bbedbb2bed2..29c5a27cb62 100644 --- a/src/tools/clippy/tests/ui/mut_mutex_lock.fixed +++ b/src/tools/clippy/tests/ui/mut_mutex_lock.fixed @@ -9,6 +9,11 @@ fn mut_mutex_lock() { let mut value = value_mutex.get_mut().unwrap(); *value += 1; + + let mut value_mutex = Mutex::new(42_u8); + let mut_ref_mut_ref_mutex = &mut &mut value_mutex; + let mut value = mut_ref_mut_ref_mutex.get_mut().unwrap(); + *value += 1; } fn no_owned_mutex_lock() { @@ -24,4 +29,11 @@ fn issue9415() { *guard += 1; } +fn mut_ref_ref_mutex_lock() { + let mutex = Mutex::new(42_u8); + let mut_ref_ref_mutex = &mut &mutex; + let mut guard = mut_ref_ref_mutex.lock().unwrap(); + *guard += 1; +} + fn main() {} diff --git a/src/tools/clippy/tests/ui/mut_mutex_lock.rs b/src/tools/clippy/tests/ui/mut_mutex_lock.rs index 74116100e82..fcdb3ff97db 100644 --- a/src/tools/clippy/tests/ui/mut_mutex_lock.rs +++ b/src/tools/clippy/tests/ui/mut_mutex_lock.rs @@ -9,6 +9,11 @@ fn mut_mutex_lock() { let mut value = value_mutex.lock().unwrap(); *value += 1; + + let mut value_mutex = Mutex::new(42_u8); + let mut_ref_mut_ref_mutex = &mut &mut value_mutex; + let mut value = mut_ref_mut_ref_mutex.lock().unwrap(); + *value += 1; } fn no_owned_mutex_lock() { @@ -24,4 +29,11 @@ fn issue9415() { *guard += 1; } +fn mut_ref_ref_mutex_lock() { + let mutex = Mutex::new(42_u8); + let mut_ref_ref_mutex = &mut &mutex; + let mut guard = mut_ref_ref_mutex.lock().unwrap(); + *guard += 1; +} + fn main() {} diff --git a/src/tools/clippy/tests/ui/mut_mutex_lock.stderr b/src/tools/clippy/tests/ui/mut_mutex_lock.stderr index a3d4905c04c..92601c4c612 100644 --- a/src/tools/clippy/tests/ui/mut_mutex_lock.stderr +++ b/src/tools/clippy/tests/ui/mut_mutex_lock.stderr @@ -7,5 +7,11 @@ LL | let mut value = value_mutex.lock().unwrap(); = note: `-D clippy::mut-mutex-lock` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::mut_mutex_lock)]` -error: aborting due to 1 previous error +error: calling `&mut Mutex::lock` unnecessarily locks an exclusive (mutable) reference + --> tests/ui/mut_mutex_lock.rs:15:43 + | +LL | let mut value = mut_ref_mut_ref_mutex.lock().unwrap(); + | ^^^^ help: change this to: `get_mut` + +error: aborting due to 2 previous errors diff --git a/src/tools/clippy/tests/ui/needless_borrow.fixed b/src/tools/clippy/tests/ui/needless_borrow.fixed index cabdc22bda8..2763830e09c 100644 --- a/src/tools/clippy/tests/ui/needless_borrow.fixed +++ b/src/tools/clippy/tests/ui/needless_borrow.fixed @@ -4,7 +4,8 @@ clippy::uninlined_format_args, clippy::unnecessary_mut_passed, clippy::unnecessary_to_owned, - clippy::unnecessary_literal_unwrap + clippy::unnecessary_literal_unwrap, + clippy::needless_lifetimes )] #![warn(clippy::needless_borrow)] diff --git a/src/tools/clippy/tests/ui/needless_borrow.rs b/src/tools/clippy/tests/ui/needless_borrow.rs index 50062589645..b46f82b18c6 100644 --- a/src/tools/clippy/tests/ui/needless_borrow.rs +++ b/src/tools/clippy/tests/ui/needless_borrow.rs @@ -4,7 +4,8 @@ clippy::uninlined_format_args, clippy::unnecessary_mut_passed, clippy::unnecessary_to_owned, - clippy::unnecessary_literal_unwrap + clippy::unnecessary_literal_unwrap, + clippy::needless_lifetimes )] #![warn(clippy::needless_borrow)] diff --git a/src/tools/clippy/tests/ui/needless_borrow.stderr b/src/tools/clippy/tests/ui/needless_borrow.stderr index bf0e265c250..4b2b17e7e57 100644 --- a/src/tools/clippy/tests/ui/needless_borrow.stderr +++ b/src/tools/clippy/tests/ui/needless_borrow.stderr @@ -1,5 +1,5 @@ error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:15:15 + --> tests/ui/needless_borrow.rs:16:15 | LL | let _ = x(&&a); // warn | ^^^ help: change this to: `&a` @@ -8,163 +8,163 @@ LL | let _ = x(&&a); // warn = help: to override `-D warnings` add `#[allow(clippy::needless_borrow)]` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:19:13 + --> tests/ui/needless_borrow.rs:20:13 | LL | mut_ref(&mut &mut b); // warn | ^^^^^^^^^^^ help: change this to: `&mut b` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:31:13 + --> tests/ui/needless_borrow.rs:32:13 | LL | &&a | ^^^ help: change this to: `&a` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:33:15 + --> tests/ui/needless_borrow.rs:34:15 | LL | 46 => &&a, | ^^^ help: change this to: `&a` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:39:27 + --> tests/ui/needless_borrow.rs:40:27 | LL | break &ref_a; | ^^^^^^ help: change this to: `ref_a` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:46:15 + --> tests/ui/needless_borrow.rs:47:15 | LL | let _ = x(&&&a); | ^^^^ help: change this to: `&a` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:47:15 + --> tests/ui/needless_borrow.rs:48:15 | LL | let _ = x(&mut &&a); | ^^^^^^^^ help: change this to: `&a` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:48:15 + --> tests/ui/needless_borrow.rs:49:15 | LL | let _ = x(&&&mut b); | ^^^^^^^^ help: change this to: `&mut b` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:49:15 + --> tests/ui/needless_borrow.rs:50:15 | LL | let _ = x(&&ref_a); | ^^^^^^^ help: change this to: `ref_a` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:52:11 + --> tests/ui/needless_borrow.rs:53:11 | LL | x(&b); | ^^ help: change this to: `b` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:59:13 + --> tests/ui/needless_borrow.rs:60:13 | LL | mut_ref(&mut x); | ^^^^^^ help: change this to: `x` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:60:13 + --> tests/ui/needless_borrow.rs:61:13 | LL | mut_ref(&mut &mut x); | ^^^^^^^^^^^ help: change this to: `x` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:61:23 + --> tests/ui/needless_borrow.rs:62:23 | LL | let y: &mut i32 = &mut x; | ^^^^^^ help: change this to: `x` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:62:23 + --> tests/ui/needless_borrow.rs:63:23 | LL | let y: &mut i32 = &mut &mut x; | ^^^^^^^^^^^ help: change this to: `x` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:71:14 + --> tests/ui/needless_borrow.rs:72:14 | LL | 0 => &mut x, | ^^^^^^ help: change this to: `x` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:77:14 + --> tests/ui/needless_borrow.rs:78:14 | LL | 0 => &mut x, | ^^^^^^ help: change this to: `x` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:89:13 + --> tests/ui/needless_borrow.rs:90:13 | LL | let _ = (&x).0; | ^^^^ help: change this to: `x` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:91:22 + --> tests/ui/needless_borrow.rs:92:22 | LL | let _ = unsafe { (&*x).0 }; | ^^^^^ help: change this to: `(*x)` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:101:5 + --> tests/ui/needless_borrow.rs:102:5 | LL | (&&()).foo(); | ^^^^^^ help: change this to: `(&())` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:110:5 + --> tests/ui/needless_borrow.rs:111:5 | LL | (&&5).foo(); | ^^^^^ help: change this to: `(&5)` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:136:23 + --> tests/ui/needless_borrow.rs:137:23 | LL | let x: (&str,) = (&"",); | ^^^ help: change this to: `""` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:178:13 + --> tests/ui/needless_borrow.rs:179:13 | LL | (&self.f)() | ^^^^^^^^^ help: change this to: `(self.f)` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:187:13 + --> tests/ui/needless_borrow.rs:188:13 | LL | (&mut self.f)() | ^^^^^^^^^^^^^ help: change this to: `(self.f)` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:224:22 + --> tests/ui/needless_borrow.rs:225:22 | LL | let _ = &mut (&mut { x.u }).x; | ^^^^^^^^^^^^^^ help: change this to: `{ x.u }` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:231:22 + --> tests/ui/needless_borrow.rs:232:22 | LL | let _ = &mut (&mut { x.u }).x; | ^^^^^^^^^^^^^^ help: change this to: `{ x.u }` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:235:22 + --> tests/ui/needless_borrow.rs:236:22 | LL | let _ = &mut (&mut x.u).x; | ^^^^^^^^^^ help: change this to: `x.u` error: this expression borrows a value the compiler would automatically borrow - --> tests/ui/needless_borrow.rs:236:22 + --> tests/ui/needless_borrow.rs:237:22 | LL | let _ = &mut (&mut { x.u }).x; | ^^^^^^^^^^^^^^ help: change this to: `{ x.u }` error: this expression creates a reference which is immediately dereferenced by the compiler - --> tests/ui/needless_borrow.rs:257:23 + --> tests/ui/needless_borrow.rs:258:23 | LL | option.unwrap_or((&x.0,)); | ^^^^ help: change this to: `x.0` diff --git a/src/tools/clippy/tests/ui/needless_lifetimes.fixed b/src/tools/clippy/tests/ui/needless_lifetimes.fixed index d1787b35abd..cfa4cf9da3c 100644 --- a/src/tools/clippy/tests/ui/needless_lifetimes.fixed +++ b/src/tools/clippy/tests/ui/needless_lifetimes.fixed @@ -329,7 +329,7 @@ mod issue2944 { bar: &'a Bar, } - impl<'a> Foo for Baz<'a> {} + impl Foo for Baz<'_> {} impl Bar { fn baz(&self) -> impl Foo + '_ { Baz { bar: self } @@ -384,7 +384,7 @@ mod nested_elision_sites { f() } // lint - fn where_clause_elidadable<T>(i: &i32, f: T) -> &i32 + fn where_clause_elidable<T>(i: &i32, f: T) -> &i32 where T: Fn(&i32) -> &i32, { @@ -543,4 +543,23 @@ mod issue5787 { } } +// https://github.com/rust-lang/rust-clippy/pull/13286#issuecomment-2374245772 +mod rayon { + trait ParallelIterator { + type Item; + } + + struct Copied<I: ParallelIterator> { + base: I, + } + + impl<'a, T, I> ParallelIterator for Copied<I> + where + I: ParallelIterator<Item = &'a T>, + T: 'a + Copy + Send + Sync, + { + type Item = T; + } +} + fn main() {} diff --git a/src/tools/clippy/tests/ui/needless_lifetimes.rs b/src/tools/clippy/tests/ui/needless_lifetimes.rs index 03d6f201358..5e9d5116426 100644 --- a/src/tools/clippy/tests/ui/needless_lifetimes.rs +++ b/src/tools/clippy/tests/ui/needless_lifetimes.rs @@ -384,7 +384,7 @@ mod nested_elision_sites { f() } // lint - fn where_clause_elidadable<'a, T>(i: &'a i32, f: T) -> &'a i32 + fn where_clause_elidable<'a, T>(i: &'a i32, f: T) -> &'a i32 where T: Fn(&i32) -> &i32, { @@ -543,4 +543,23 @@ mod issue5787 { } } +// https://github.com/rust-lang/rust-clippy/pull/13286#issuecomment-2374245772 +mod rayon { + trait ParallelIterator { + type Item; + } + + struct Copied<I: ParallelIterator> { + base: I, + } + + impl<'a, T, I> ParallelIterator for Copied<I> + where + I: ParallelIterator<Item = &'a T>, + T: 'a + Copy + Send + Sync, + { + type Item = T; + } +} + fn main() {} diff --git a/src/tools/clippy/tests/ui/needless_lifetimes.stderr b/src/tools/clippy/tests/ui/needless_lifetimes.stderr index 50f845e2d92..e56c914cc86 100644 --- a/src/tools/clippy/tests/ui/needless_lifetimes.stderr +++ b/src/tools/clippy/tests/ui/needless_lifetimes.stderr @@ -336,6 +336,18 @@ LL + fn needless_lt(_x: &u8) {} | error: the following explicit lifetimes could be elided: 'a + --> tests/ui/needless_lifetimes.rs:332:10 + | +LL | impl<'a> Foo for Baz<'a> {} + | ^^ ^^ + | +help: elide the lifetimes + | +LL - impl<'a> Foo for Baz<'a> {} +LL + impl Foo for Baz<'_> {} + | + +error: the following explicit lifetimes could be elided: 'a --> tests/ui/needless_lifetimes.rs:334:16 | LL | fn baz<'a>(&'a self) -> impl Foo + 'a { @@ -372,15 +384,15 @@ LL + fn generics_elidable<T: Fn(&i32) -> &i32>(i: &i32, f: T) -> &i32 { | error: the following explicit lifetimes could be elided: 'a - --> tests/ui/needless_lifetimes.rs:387:32 + --> tests/ui/needless_lifetimes.rs:387:30 | -LL | fn where_clause_elidadable<'a, T>(i: &'a i32, f: T) -> &'a i32 - | ^^ ^^ ^^ +LL | fn where_clause_elidable<'a, T>(i: &'a i32, f: T) -> &'a i32 + | ^^ ^^ ^^ | help: elide the lifetimes | -LL - fn where_clause_elidadable<'a, T>(i: &'a i32, f: T) -> &'a i32 -LL + fn where_clause_elidadable<T>(i: &i32, f: T) -> &i32 +LL - fn where_clause_elidable<'a, T>(i: &'a i32, f: T) -> &'a i32 +LL + fn where_clause_elidable<T>(i: &i32, f: T) -> &i32 | error: the following explicit lifetimes could be elided: 'a @@ -564,5 +576,5 @@ LL - fn one_input<'a>(x: &'a u8) -> &'a u8 { LL + fn one_input(x: &u8) -> &u8 { | -error: aborting due to 47 previous errors +error: aborting due to 48 previous errors diff --git a/src/tools/clippy/tests/ui/needless_pass_by_value.rs b/src/tools/clippy/tests/ui/needless_pass_by_value.rs index 14cba5a7eb5..a8d9db95dcc 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_value.rs +++ b/src/tools/clippy/tests/ui/needless_pass_by_value.rs @@ -5,7 +5,8 @@ clippy::redundant_clone, clippy::redundant_pattern_matching, clippy::single_match, - clippy::uninlined_format_args + clippy::uninlined_format_args, + clippy::needless_lifetimes )] //@no-rustfix use std::borrow::Borrow; @@ -84,7 +85,7 @@ trait Serialize {} impl<'a, T> Serialize for &'a T where T: Serialize {} impl Serialize for i32 {} -fn test_blanket_ref<T: Foo, S: Serialize>(_foo: T, _serializable: S) {} +fn test_blanket_ref<T: Foo, S: Serialize>(vals: T, serializable: S) {} //~^ ERROR: this argument is passed by value, but not consumed in the function body fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) { @@ -116,7 +117,7 @@ impl<T: Serialize, U> S<T, U> { ) { } - fn baz(&self, _u: U, _s: Self) {} + fn baz(&self, uu: U, ss: Self) {} //~^ ERROR: this argument is passed by value, but not consumed in the function body //~| ERROR: this argument is passed by value, but not consumed in the function body } @@ -162,13 +163,13 @@ fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { // The following 3 lines should not cause an ICE. See #2831 trait Bar<'a, A> {} impl<'b, T> Bar<'b, T> for T {} -fn some_fun<'b, S: Bar<'b, ()>>(_item: S) {} +fn some_fun<'b, S: Bar<'b, ()>>(items: S) {} //~^ ERROR: this argument is passed by value, but not consumed in the function body // Also this should not cause an ICE. See #2831 trait Club<'a, A> {} impl<T> Club<'static, T> for T {} -fn more_fun(_item: impl Club<'static, i32>) {} +fn more_fun(items: impl Club<'static, i32>) {} //~^ ERROR: this argument is passed by value, but not consumed in the function body fn is_sync<T>(_: T) @@ -177,6 +178,10 @@ where { } +struct Obj(String); + +fn prefix_test(_unused_with_prefix: Obj) {} + fn main() { // This should not cause an ICE either // https://github.com/rust-lang/rust-clippy/issues/3144 diff --git a/src/tools/clippy/tests/ui/needless_pass_by_value.stderr b/src/tools/clippy/tests/ui/needless_pass_by_value.stderr index 827a200ba68..2587d3f8c52 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_value.stderr +++ b/src/tools/clippy/tests/ui/needless_pass_by_value.stderr @@ -1,5 +1,5 @@ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:18:23 + --> tests/ui/needless_pass_by_value.rs:19:23 | LL | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> { | ^^^^^^ help: consider changing the type to: `&[T]` @@ -8,55 +8,55 @@ LL | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T = help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_value)]` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:34:11 + --> tests/ui/needless_pass_by_value.rs:35:11 | LL | fn bar(x: String, y: Wrapper) { | ^^^^^^ help: consider changing the type to: `&str` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:34:22 + --> tests/ui/needless_pass_by_value.rs:35:22 | LL | fn bar(x: String, y: Wrapper) { | ^^^^^^^ help: consider taking a reference instead: `&Wrapper` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:42:71 + --> tests/ui/needless_pass_by_value.rs:43:71 | LL | fn test_borrow_trait<T: Borrow<str>, U: AsRef<str>, V>(t: T, u: U, v: V) { | ^ help: consider taking a reference instead: `&V` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:55:18 + --> tests/ui/needless_pass_by_value.rs:56:18 | LL | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) { | ^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&Option<Option<String>>` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:69:24 + --> tests/ui/needless_pass_by_value.rs:70:24 | LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) { | ^^^^^^^ help: consider taking a reference instead: `&Wrapper` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:69:36 + --> tests/ui/needless_pass_by_value.rs:70:36 | LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) { | ^^^^^^^ help: consider taking a reference instead: `&Wrapper` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:87:49 + --> tests/ui/needless_pass_by_value.rs:88:49 | -LL | fn test_blanket_ref<T: Foo, S: Serialize>(_foo: T, _serializable: S) {} +LL | fn test_blanket_ref<T: Foo, S: Serialize>(vals: T, serializable: S) {} | ^ help: consider taking a reference instead: `&T` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:90:18 + --> tests/ui/needless_pass_by_value.rs:91:18 | LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) { | ^^^^^^ help: consider taking a reference instead: `&String` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:90:29 + --> tests/ui/needless_pass_by_value.rs:91:29 | LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) { | ^^^^^^ @@ -71,13 +71,13 @@ LL | let _ = t.to_string(); | ~~~~~~~~~~~~~ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:90:40 + --> tests/ui/needless_pass_by_value.rs:91:40 | LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) { | ^^^^^^^^ help: consider taking a reference instead: `&Vec<i32>` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:90:53 + --> tests/ui/needless_pass_by_value.rs:91:53 | LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) { | ^^^^^^^^ @@ -92,87 +92,87 @@ LL | let _ = v.to_owned(); | ~~~~~~~~~~~~ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:107:12 + --> tests/ui/needless_pass_by_value.rs:108:12 | LL | s: String, | ^^^^^^ help: consider changing the type to: `&str` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:109:12 + --> tests/ui/needless_pass_by_value.rs:110:12 | LL | t: String, | ^^^^^^ help: consider taking a reference instead: `&String` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:119:23 + --> tests/ui/needless_pass_by_value.rs:120:23 | -LL | fn baz(&self, _u: U, _s: Self) {} +LL | fn baz(&self, uu: U, ss: Self) {} | ^ help: consider taking a reference instead: `&U` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:119:30 + --> tests/ui/needless_pass_by_value.rs:120:30 | -LL | fn baz(&self, _u: U, _s: Self) {} +LL | fn baz(&self, uu: U, ss: Self) {} | ^^^^ help: consider taking a reference instead: `&Self` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:143:24 + --> tests/ui/needless_pass_by_value.rs:144:24 | LL | fn bar_copy(x: u32, y: CopyWrapper) { | ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper` | -help: consider marking this type as `Copy` - --> tests/ui/needless_pass_by_value.rs:141:1 +help: or consider marking this type as `Copy` + --> tests/ui/needless_pass_by_value.rs:142:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:150:29 + --> tests/ui/needless_pass_by_value.rs:151:29 | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { | ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper` | -help: consider marking this type as `Copy` - --> tests/ui/needless_pass_by_value.rs:141:1 +help: or consider marking this type as `Copy` + --> tests/ui/needless_pass_by_value.rs:142:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:150:45 + --> tests/ui/needless_pass_by_value.rs:151:45 | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { | ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper` | -help: consider marking this type as `Copy` - --> tests/ui/needless_pass_by_value.rs:141:1 +help: or consider marking this type as `Copy` + --> tests/ui/needless_pass_by_value.rs:142:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:150:61 + --> tests/ui/needless_pass_by_value.rs:151:61 | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { | ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper` | -help: consider marking this type as `Copy` - --> tests/ui/needless_pass_by_value.rs:141:1 +help: or consider marking this type as `Copy` + --> tests/ui/needless_pass_by_value.rs:142:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:165:40 + --> tests/ui/needless_pass_by_value.rs:166:40 | -LL | fn some_fun<'b, S: Bar<'b, ()>>(_item: S) {} +LL | fn some_fun<'b, S: Bar<'b, ()>>(items: S) {} | ^ help: consider taking a reference instead: `&S` error: this argument is passed by value, but not consumed in the function body - --> tests/ui/needless_pass_by_value.rs:171:20 + --> tests/ui/needless_pass_by_value.rs:172:20 | -LL | fn more_fun(_item: impl Club<'static, i32>) {} +LL | fn more_fun(items: impl Club<'static, i32>) {} | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&impl Club<'static, i32>` error: aborting due to 22 previous errors diff --git a/src/tools/clippy/tests/ui/needless_return.fixed b/src/tools/clippy/tests/ui/needless_return.fixed index fc4129e1db8..ca422e605d6 100644 --- a/src/tools/clippy/tests/ui/needless_return.fixed +++ b/src/tools/clippy/tests/ui/needless_return.fixed @@ -355,4 +355,28 @@ fn conjunctive_blocks() -> String { ({ "a".to_string() } + "b" + { "c" }) } +fn issue12907() -> String { + "".split("").next().unwrap().to_string() +} + fn main() {} + +fn a(x: Option<u8>) -> Option<u8> { + match x { + Some(_) => None, + None => { + #[expect(clippy::needless_return, reason = "Use early return for errors.")] + return None; + }, + } +} + +fn b(x: Option<u8>) -> Option<u8> { + match x { + Some(_) => None, + None => { + #[expect(clippy::needless_return)] + return None; + }, + } +} diff --git a/src/tools/clippy/tests/ui/needless_return.rs b/src/tools/clippy/tests/ui/needless_return.rs index 61c7a02008f..aad6e13136f 100644 --- a/src/tools/clippy/tests/ui/needless_return.rs +++ b/src/tools/clippy/tests/ui/needless_return.rs @@ -365,4 +365,28 @@ fn conjunctive_blocks() -> String { return { "a".to_string() } + "b" + { "c" }; } +fn issue12907() -> String { + return "".split("").next().unwrap().to_string(); +} + fn main() {} + +fn a(x: Option<u8>) -> Option<u8> { + match x { + Some(_) => None, + None => { + #[expect(clippy::needless_return, reason = "Use early return for errors.")] + return None; + }, + } +} + +fn b(x: Option<u8>) -> Option<u8> { + match x { + Some(_) => None, + None => { + #[expect(clippy::needless_return)] + return None; + }, + } +} diff --git a/src/tools/clippy/tests/ui/needless_return.stderr b/src/tools/clippy/tests/ui/needless_return.stderr index ea9c230eafd..da0fa220d8c 100644 --- a/src/tools/clippy/tests/ui/needless_return.stderr +++ b/src/tools/clippy/tests/ui/needless_return.stderr @@ -665,5 +665,17 @@ LL - return { "a".to_string() } + "b" + { "c" }; LL + ({ "a".to_string() } + "b" + { "c" }) | -error: aborting due to 53 previous errors +error: unneeded `return` statement + --> tests/ui/needless_return.rs:369:5 + | +LL | return "".split("").next().unwrap().to_string(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove `return` + | +LL - return "".split("").next().unwrap().to_string(); +LL + "".split("").next().unwrap().to_string() + | + +error: aborting due to 54 previous errors diff --git a/src/tools/clippy/tests/ui/new_without_default.fixed b/src/tools/clippy/tests/ui/new_without_default.fixed index 85408c4e17f..5a6a92394a7 100644 --- a/src/tools/clippy/tests/ui/new_without_default.fixed +++ b/src/tools/clippy/tests/ui/new_without_default.fixed @@ -2,7 +2,8 @@ dead_code, clippy::missing_safety_doc, clippy::extra_unused_lifetimes, - clippy::extra_unused_type_parameters + clippy::extra_unused_type_parameters, + clippy::needless_lifetimes )] #![warn(clippy::new_without_default)] diff --git a/src/tools/clippy/tests/ui/new_without_default.rs b/src/tools/clippy/tests/ui/new_without_default.rs index 3ac7292c236..12ea729253a 100644 --- a/src/tools/clippy/tests/ui/new_without_default.rs +++ b/src/tools/clippy/tests/ui/new_without_default.rs @@ -2,7 +2,8 @@ dead_code, clippy::missing_safety_doc, clippy::extra_unused_lifetimes, - clippy::extra_unused_type_parameters + clippy::extra_unused_type_parameters, + clippy::needless_lifetimes )] #![warn(clippy::new_without_default)] diff --git a/src/tools/clippy/tests/ui/new_without_default.stderr b/src/tools/clippy/tests/ui/new_without_default.stderr index a30830ae7b2..57bf4bd847c 100644 --- a/src/tools/clippy/tests/ui/new_without_default.stderr +++ b/src/tools/clippy/tests/ui/new_without_default.stderr @@ -1,5 +1,5 @@ error: you should consider adding a `Default` implementation for `Foo` - --> tests/ui/new_without_default.rs:12:5 + --> tests/ui/new_without_default.rs:13:5 | LL | / pub fn new() -> Foo { LL | | @@ -20,7 +20,7 @@ LL + } | error: you should consider adding a `Default` implementation for `Bar` - --> tests/ui/new_without_default.rs:22:5 + --> tests/ui/new_without_default.rs:23:5 | LL | / pub fn new() -> Self { LL | | @@ -38,7 +38,7 @@ LL + } | error: you should consider adding a `Default` implementation for `LtKo<'c>` - --> tests/ui/new_without_default.rs:87:5 + --> tests/ui/new_without_default.rs:88:5 | LL | / pub fn new() -> LtKo<'c> { LL | | @@ -56,7 +56,7 @@ LL + } | error: you should consider adding a `Default` implementation for `Const` - --> tests/ui/new_without_default.rs:120:5 + --> tests/ui/new_without_default.rs:121:5 | LL | / pub const fn new() -> Const { LL | | Const @@ -73,7 +73,7 @@ LL + } | error: you should consider adding a `Default` implementation for `NewNotEqualToDerive` - --> tests/ui/new_without_default.rs:180:5 + --> tests/ui/new_without_default.rs:181:5 | LL | / pub fn new() -> Self { LL | | @@ -91,7 +91,7 @@ LL + } | error: you should consider adding a `Default` implementation for `FooGenerics<T>` - --> tests/ui/new_without_default.rs:189:5 + --> tests/ui/new_without_default.rs:190:5 | LL | / pub fn new() -> Self { LL | | @@ -109,7 +109,7 @@ LL + } | error: you should consider adding a `Default` implementation for `BarGenerics<T>` - --> tests/ui/new_without_default.rs:197:5 + --> tests/ui/new_without_default.rs:198:5 | LL | / pub fn new() -> Self { LL | | @@ -127,7 +127,7 @@ LL + } | error: you should consider adding a `Default` implementation for `Foo<T>` - --> tests/ui/new_without_default.rs:209:9 + --> tests/ui/new_without_default.rs:210:9 | LL | / pub fn new() -> Self { LL | | @@ -147,7 +147,7 @@ LL ~ impl<T> Foo<T> { | error: you should consider adding a `Default` implementation for `MyStruct<K, V>` - --> tests/ui/new_without_default.rs:255:5 + --> tests/ui/new_without_default.rs:256:5 | LL | / pub fn new() -> Self { LL | | Self { _kv: None } diff --git a/src/tools/clippy/tests/ui/non_octal_unix_permissions.fixed b/src/tools/clippy/tests/ui/non_octal_unix_permissions.fixed index 237f5f5b97a..f68d5e30d27 100644 --- a/src/tools/clippy/tests/ui/non_octal_unix_permissions.fixed +++ b/src/tools/clippy/tests/ui/non_octal_unix_permissions.fixed @@ -1,4 +1,4 @@ -//@ignore-target-windows +//@ignore-target: windows #![warn(clippy::non_octal_unix_permissions)] use std::fs::{DirBuilder, File, OpenOptions, Permissions}; diff --git a/src/tools/clippy/tests/ui/non_octal_unix_permissions.rs b/src/tools/clippy/tests/ui/non_octal_unix_permissions.rs index c8da5dbcec2..647c3769d2c 100644 --- a/src/tools/clippy/tests/ui/non_octal_unix_permissions.rs +++ b/src/tools/clippy/tests/ui/non_octal_unix_permissions.rs @@ -1,4 +1,4 @@ -//@ignore-target-windows +//@ignore-target: windows #![warn(clippy::non_octal_unix_permissions)] use std::fs::{DirBuilder, File, OpenOptions, Permissions}; diff --git a/src/tools/clippy/tests/ui/non_zero_suggestions.fixed b/src/tools/clippy/tests/ui/non_zero_suggestions.fixed new file mode 100644 index 00000000000..e67c992fdde --- /dev/null +++ b/src/tools/clippy/tests/ui/non_zero_suggestions.fixed @@ -0,0 +1,65 @@ +#![warn(clippy::non_zero_suggestions)] +use std::num::{NonZeroI8, NonZeroI16, NonZeroU8, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroUsize}; + +fn main() { + /// Positive test cases (lint should trigger) + // U32 -> U64 + let x: u64 = 100; + let y = NonZeroU32::new(10).unwrap(); + let r1 = x / NonZeroU64::from(y); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + let r2 = x % NonZeroU64::from(y); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + // U16 -> U32 + let a: u32 = 50; + let b = NonZeroU16::new(5).unwrap(); + let r3 = a / NonZeroU32::from(b); + //~^ ERROR: consider using `NonZeroU32::from()` for more efficient and type-safe conversion + + let x = NonZeroU64::from(NonZeroU32::new(5).unwrap()); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + /// Negative test cases (lint should not trigger) + // Left hand side expressions should not be triggered + let c: u32 = 50; + let d = NonZeroU16::new(5).unwrap(); + let r4 = u32::from(b.get()) / a; + + // Should not trigger for any other operand other than `/` and `%` + let r5 = a + u32::from(b.get()); + let r6 = a - u32::from(b.get()); + + // Same size types + let e: u32 = 200; + let f = NonZeroU32::new(20).unwrap(); + let r7 = e / f.get(); + + // Smaller to larger, but not NonZero + let g: u64 = 1000; + let h: u32 = 50; + let r8 = g / u64::from(h); + + // Using From correctly + let k: u64 = 300; + let l = NonZeroU32::new(15).unwrap(); + let r9 = k / NonZeroU64::from(l); +} + +// Additional function to test the lint in a different context +fn divide_numbers(x: u64, y: NonZeroU32) -> u64 { + x / NonZeroU64::from(y) + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion +} + +struct Calculator { + value: u64, +} + +impl Calculator { + fn divide(&self, divisor: NonZeroU32) -> u64 { + self.value / NonZeroU64::from(divisor) + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + } +} diff --git a/src/tools/clippy/tests/ui/non_zero_suggestions.rs b/src/tools/clippy/tests/ui/non_zero_suggestions.rs new file mode 100644 index 00000000000..de82371a8f2 --- /dev/null +++ b/src/tools/clippy/tests/ui/non_zero_suggestions.rs @@ -0,0 +1,65 @@ +#![warn(clippy::non_zero_suggestions)] +use std::num::{NonZeroI8, NonZeroI16, NonZeroU8, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroUsize}; + +fn main() { + /// Positive test cases (lint should trigger) + // U32 -> U64 + let x: u64 = 100; + let y = NonZeroU32::new(10).unwrap(); + let r1 = x / u64::from(y.get()); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + let r2 = x % u64::from(y.get()); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + // U16 -> U32 + let a: u32 = 50; + let b = NonZeroU16::new(5).unwrap(); + let r3 = a / u32::from(b.get()); + //~^ ERROR: consider using `NonZeroU32::from()` for more efficient and type-safe conversion + + let x = u64::from(NonZeroU32::new(5).unwrap().get()); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + /// Negative test cases (lint should not trigger) + // Left hand side expressions should not be triggered + let c: u32 = 50; + let d = NonZeroU16::new(5).unwrap(); + let r4 = u32::from(b.get()) / a; + + // Should not trigger for any other operand other than `/` and `%` + let r5 = a + u32::from(b.get()); + let r6 = a - u32::from(b.get()); + + // Same size types + let e: u32 = 200; + let f = NonZeroU32::new(20).unwrap(); + let r7 = e / f.get(); + + // Smaller to larger, but not NonZero + let g: u64 = 1000; + let h: u32 = 50; + let r8 = g / u64::from(h); + + // Using From correctly + let k: u64 = 300; + let l = NonZeroU32::new(15).unwrap(); + let r9 = k / NonZeroU64::from(l); +} + +// Additional function to test the lint in a different context +fn divide_numbers(x: u64, y: NonZeroU32) -> u64 { + x / u64::from(y.get()) + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion +} + +struct Calculator { + value: u64, +} + +impl Calculator { + fn divide(&self, divisor: NonZeroU32) -> u64 { + self.value / u64::from(divisor.get()) + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + } +} diff --git a/src/tools/clippy/tests/ui/non_zero_suggestions.stderr b/src/tools/clippy/tests/ui/non_zero_suggestions.stderr new file mode 100644 index 00000000000..7a57f7983be --- /dev/null +++ b/src/tools/clippy/tests/ui/non_zero_suggestions.stderr @@ -0,0 +1,41 @@ +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions.rs:9:18 + | +LL | let r1 = x / u64::from(y.get()); + | ^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(y)` + | + = note: `-D clippy::non-zero-suggestions` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::non_zero_suggestions)]` + +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions.rs:12:18 + | +LL | let r2 = x % u64::from(y.get()); + | ^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(y)` + +error: consider using `NonZeroU32::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions.rs:18:18 + | +LL | let r3 = a / u32::from(b.get()); + | ^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU32::from(b)` + +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions.rs:21:13 + | +LL | let x = u64::from(NonZeroU32::new(5).unwrap().get()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(NonZeroU32::new(5).unwrap())` + +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions.rs:52:9 + | +LL | x / u64::from(y.get()) + | ^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(y)` + +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions.rs:62:22 + | +LL | self.value / u64::from(divisor.get()) + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(divisor)` + +error: aborting due to 6 previous errors + diff --git a/src/tools/clippy/tests/ui/non_zero_suggestions_unfixable.rs b/src/tools/clippy/tests/ui/non_zero_suggestions_unfixable.rs new file mode 100644 index 00000000000..193c710e589 --- /dev/null +++ b/src/tools/clippy/tests/ui/non_zero_suggestions_unfixable.rs @@ -0,0 +1,23 @@ +#![warn(clippy::non_zero_suggestions)] +//@no-rustfix +use std::num::{NonZeroI8, NonZeroI16, NonZeroU8, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroUsize}; + +fn main() { + let x: u64 = u64::from(NonZeroU32::new(5).unwrap().get()); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + + let n = NonZeroU32::new(20).unwrap(); + let y = u64::from(n.get()); + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + some_fn_that_only_takes_u64(y); + + let m = NonZeroU32::try_from(1).unwrap(); + let _z: NonZeroU64 = m.into(); +} + +fn return_non_zero(x: u64, y: NonZeroU32) -> u64 { + u64::from(y.get()) + //~^ ERROR: consider using `NonZeroU64::from()` for more efficient and type-safe conversion +} + +fn some_fn_that_only_takes_u64(_: u64) {} diff --git a/src/tools/clippy/tests/ui/non_zero_suggestions_unfixable.stderr b/src/tools/clippy/tests/ui/non_zero_suggestions_unfixable.stderr new file mode 100644 index 00000000000..787179f2a2d --- /dev/null +++ b/src/tools/clippy/tests/ui/non_zero_suggestions_unfixable.stderr @@ -0,0 +1,23 @@ +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions_unfixable.rs:6:18 + | +LL | let x: u64 = u64::from(NonZeroU32::new(5).unwrap().get()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(NonZeroU32::new(5).unwrap())` + | + = note: `-D clippy::non-zero-suggestions` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::non_zero_suggestions)]` + +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions_unfixable.rs:10:13 + | +LL | let y = u64::from(n.get()); + | ^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(n)` + +error: consider using `NonZeroU64::from()` for more efficient and type-safe conversion + --> tests/ui/non_zero_suggestions_unfixable.rs:19:5 + | +LL | u64::from(y.get()) + | ^^^^^^^^^^^^^^^^^^ help: replace with: `NonZeroU64::from(y)` + +error: aborting due to 3 previous errors + diff --git a/src/tools/clippy/tests/ui/nonminimal_bool_methods.fixed b/src/tools/clippy/tests/ui/nonminimal_bool_methods.fixed index cc91ba6ec66..a23310c1ad9 100644 --- a/src/tools/clippy/tests/ui/nonminimal_bool_methods.fixed +++ b/src/tools/clippy/tests/ui/nonminimal_bool_methods.fixed @@ -115,4 +115,66 @@ fn issue_12625() { if a as u64 > b {} //~ ERROR: this boolean expression can be simplified } +fn issue_13436() { + fn not_zero(x: i32) -> bool { + x != 0 + } + + let opt = Some(500); + _ = opt.is_some_and(|x| x < 1000); + _ = opt.is_some_and(|x| x <= 1000); + _ = opt.is_some_and(|x| x > 1000); + _ = opt.is_some_and(|x| x >= 1000); + _ = opt.is_some_and(|x| x == 1000); + _ = opt.is_some_and(|x| x != 1000); + _ = opt.is_some_and(not_zero); + _ = opt.is_none_or(|x| x >= 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x > 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x <= 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x < 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x != 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x == 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(not_zero); + _ = opt.is_none_or(|x| x < 1000); + _ = opt.is_none_or(|x| x <= 1000); + _ = opt.is_none_or(|x| x > 1000); + _ = opt.is_none_or(|x| x >= 1000); + _ = opt.is_none_or(|x| x == 1000); + _ = opt.is_none_or(|x| x != 1000); + _ = opt.is_none_or(not_zero); + _ = opt.is_some_and(|x| x >= 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x > 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x <= 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x < 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x != 1000); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x == 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(not_zero); + + let opt = Some(true); + _ = opt.is_some_and(|x| x); + _ = opt.is_some_and(|x| !x); + _ = !opt.is_some_and(|x| x); + _ = opt.is_none_or(|x| x); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x); + _ = opt.is_none_or(|x| !x); + _ = !opt.is_none_or(|x| x); + _ = opt.is_some_and(|x| x); //~ ERROR: this boolean expression can be simplified + + let opt: Option<Result<i32, i32>> = Some(Ok(123)); + _ = opt.is_some_and(|x| x.is_ok()); + _ = opt.is_some_and(|x| x.is_err()); + _ = opt.is_none_or(|x| x.is_ok()); + _ = opt.is_none_or(|x| x.is_err()); + _ = opt.is_none_or(|x| x.is_err()); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x.is_ok()); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x.is_err()); //~ ERROR: this boolean expression can be simplified + _ = opt.is_some_and(|x| x.is_ok()); //~ ERROR: this boolean expression can be simplified + + #[clippy::msrv = "1.81"] + fn before_stabilization() { + let opt = Some(500); + _ = !opt.is_some_and(|x| x < 1000); + } +} + fn main() {} diff --git a/src/tools/clippy/tests/ui/nonminimal_bool_methods.rs b/src/tools/clippy/tests/ui/nonminimal_bool_methods.rs index c812f6f0ca4..6c844373af7 100644 --- a/src/tools/clippy/tests/ui/nonminimal_bool_methods.rs +++ b/src/tools/clippy/tests/ui/nonminimal_bool_methods.rs @@ -115,4 +115,66 @@ fn issue_12625() { if !(a as u64 <= b) {} //~ ERROR: this boolean expression can be simplified } +fn issue_13436() { + fn not_zero(x: i32) -> bool { + x != 0 + } + + let opt = Some(500); + _ = opt.is_some_and(|x| x < 1000); + _ = opt.is_some_and(|x| x <= 1000); + _ = opt.is_some_and(|x| x > 1000); + _ = opt.is_some_and(|x| x >= 1000); + _ = opt.is_some_and(|x| x == 1000); + _ = opt.is_some_and(|x| x != 1000); + _ = opt.is_some_and(not_zero); + _ = !opt.is_some_and(|x| x < 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(|x| x <= 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(|x| x > 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(|x| x >= 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(|x| x == 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(|x| x != 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(not_zero); + _ = opt.is_none_or(|x| x < 1000); + _ = opt.is_none_or(|x| x <= 1000); + _ = opt.is_none_or(|x| x > 1000); + _ = opt.is_none_or(|x| x >= 1000); + _ = opt.is_none_or(|x| x == 1000); + _ = opt.is_none_or(|x| x != 1000); + _ = opt.is_none_or(not_zero); + _ = !opt.is_none_or(|x| x < 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x <= 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x > 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x >= 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x == 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x != 1000); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(not_zero); + + let opt = Some(true); + _ = opt.is_some_and(|x| x); + _ = opt.is_some_and(|x| !x); + _ = !opt.is_some_and(|x| x); + _ = !opt.is_some_and(|x| !x); //~ ERROR: this boolean expression can be simplified + _ = opt.is_none_or(|x| x); + _ = opt.is_none_or(|x| !x); + _ = !opt.is_none_or(|x| x); + _ = !opt.is_none_or(|x| !x); //~ ERROR: this boolean expression can be simplified + + let opt: Option<Result<i32, i32>> = Some(Ok(123)); + _ = opt.is_some_and(|x| x.is_ok()); + _ = opt.is_some_and(|x| x.is_err()); + _ = opt.is_none_or(|x| x.is_ok()); + _ = opt.is_none_or(|x| x.is_err()); + _ = !opt.is_some_and(|x| x.is_ok()); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_some_and(|x| x.is_err()); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x.is_ok()); //~ ERROR: this boolean expression can be simplified + _ = !opt.is_none_or(|x| x.is_err()); //~ ERROR: this boolean expression can be simplified + + #[clippy::msrv = "1.81"] + fn before_stabilization() { + let opt = Some(500); + _ = !opt.is_some_and(|x| x < 1000); + } +} + fn main() {} diff --git a/src/tools/clippy/tests/ui/nonminimal_bool_methods.stderr b/src/tools/clippy/tests/ui/nonminimal_bool_methods.stderr index d7adc0638b3..52803e828ae 100644 --- a/src/tools/clippy/tests/ui/nonminimal_bool_methods.stderr +++ b/src/tools/clippy/tests/ui/nonminimal_bool_methods.stderr @@ -97,5 +97,113 @@ error: this boolean expression can be simplified LL | if !(a as u64 <= b) {} | ^^^^^^^^^^^^^^^^ help: try: `a as u64 > b` -error: aborting due to 16 previous errors +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:131:9 + | +LL | _ = !opt.is_some_and(|x| x < 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x >= 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:132:9 + | +LL | _ = !opt.is_some_and(|x| x <= 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x > 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:133:9 + | +LL | _ = !opt.is_some_and(|x| x > 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x <= 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:134:9 + | +LL | _ = !opt.is_some_and(|x| x >= 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x < 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:135:9 + | +LL | _ = !opt.is_some_and(|x| x == 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x != 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:136:9 + | +LL | _ = !opt.is_some_and(|x| x != 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x == 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:145:9 + | +LL | _ = !opt.is_none_or(|x| x < 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x >= 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:146:9 + | +LL | _ = !opt.is_none_or(|x| x <= 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x > 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:147:9 + | +LL | _ = !opt.is_none_or(|x| x > 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x <= 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:148:9 + | +LL | _ = !opt.is_none_or(|x| x >= 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x < 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:149:9 + | +LL | _ = !opt.is_none_or(|x| x == 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x != 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:150:9 + | +LL | _ = !opt.is_none_or(|x| x != 1000); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x == 1000)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:157:9 + | +LL | _ = !opt.is_some_and(|x| !x); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:161:9 + | +LL | _ = !opt.is_none_or(|x| !x); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x)` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:168:9 + | +LL | _ = !opt.is_some_and(|x| x.is_ok()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x.is_err())` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:169:9 + | +LL | _ = !opt.is_some_and(|x| x.is_err()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_none_or(|x| x.is_ok())` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:170:9 + | +LL | _ = !opt.is_none_or(|x| x.is_ok()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x.is_err())` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods.rs:171:9 + | +LL | _ = !opt.is_none_or(|x| x.is_err()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt.is_some_and(|x| x.is_ok())` + +error: aborting due to 34 previous errors diff --git a/src/tools/clippy/tests/ui/nonminimal_bool_methods_unfixable.rs b/src/tools/clippy/tests/ui/nonminimal_bool_methods_unfixable.rs new file mode 100644 index 00000000000..60b8da30a2f --- /dev/null +++ b/src/tools/clippy/tests/ui/nonminimal_bool_methods_unfixable.rs @@ -0,0 +1,9 @@ +#![warn(clippy::nonminimal_bool)] +//@no-rustfix + +fn issue_13436() { + let opt_opt = Some(Some(500)); + _ = !opt_opt.is_some_and(|x| !x.is_some_and(|y| y != 1000)); //~ ERROR: this boolean expression can be simplified +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/nonminimal_bool_methods_unfixable.stderr b/src/tools/clippy/tests/ui/nonminimal_bool_methods_unfixable.stderr new file mode 100644 index 00000000000..5a90155844c --- /dev/null +++ b/src/tools/clippy/tests/ui/nonminimal_bool_methods_unfixable.stderr @@ -0,0 +1,17 @@ +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods_unfixable.rs:6:9 + | +LL | _ = !opt_opt.is_some_and(|x| !x.is_some_and(|y| y != 1000)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `opt_opt.is_none_or(|x| x.is_some_and(|y| y != 1000))` + | + = note: `-D clippy::nonminimal-bool` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::nonminimal_bool)]` + +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool_methods_unfixable.rs:6:34 + | +LL | _ = !opt_opt.is_some_and(|x| !x.is_some_and(|y| y != 1000)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `x.is_none_or(|y| y == 1000)` + +error: aborting due to 2 previous errors + diff --git a/src/tools/clippy/tests/ui/panic_in_result_fn.rs b/src/tools/clippy/tests/ui/panic_in_result_fn.rs index aaaf9a109ac..e2375aa996f 100644 --- a/src/tools/clippy/tests/ui/panic_in_result_fn.rs +++ b/src/tools/clippy/tests/ui/panic_in_result_fn.rs @@ -71,6 +71,15 @@ fn function_result_with_custom_todo() -> Result<bool, String> // should not emit Ok(true) } +fn issue_13381<const N: usize>() -> Result<(), String> { + const { + if N == 0 { + panic!(); + } + } + Ok(()) +} + fn main() -> Result<(), String> { todo!("finish main method"); Ok(()) diff --git a/src/tools/clippy/tests/ui/pointers_in_nomem_asm_block.rs b/src/tools/clippy/tests/ui/pointers_in_nomem_asm_block.rs new file mode 100644 index 00000000000..b5abcbb3474 --- /dev/null +++ b/src/tools/clippy/tests/ui/pointers_in_nomem_asm_block.rs @@ -0,0 +1,33 @@ +//@ needs-asm-support +#![warn(clippy::pointers_in_nomem_asm_block)] +#![crate_type = "lib"] +#![no_std] + +use core::arch::asm; + +unsafe fn nomem_bad(p: &i32) { + asm!( + "asdf {p1}, {p2}, {p3}", + p1 = in(reg) p, + //~^ ERROR: passing pointers to nomem asm block + p2 = in(reg) p as *const _ as usize, + p3 = in(reg) p, + options(nomem, nostack, preserves_flags) + ); +} + +unsafe fn nomem_good(p: &i32) { + asm!("asdf {p}", p = in(reg) p, options(readonly, nostack, preserves_flags)); + let p = p as *const i32 as usize; + asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); +} + +unsafe fn nomem_bad2(p: &mut i32) { + asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); + //~^ ERROR: passing pointers to nomem asm block +} + +unsafe fn nomem_fn(p: extern "C" fn()) { + asm!("call {p}", p = in(reg) p, options(nomem)); + //~^ ERROR: passing pointers to nomem asm block +} diff --git a/src/tools/clippy/tests/ui/pointers_in_nomem_asm_block.stderr b/src/tools/clippy/tests/ui/pointers_in_nomem_asm_block.stderr new file mode 100644 index 00000000000..cabeb37344f --- /dev/null +++ b/src/tools/clippy/tests/ui/pointers_in_nomem_asm_block.stderr @@ -0,0 +1,34 @@ +error: passing pointers to nomem asm block + --> tests/ui/pointers_in_nomem_asm_block.rs:11:9 + | +LL | p1 = in(reg) p, + | ^^^^^^^^^^^^^^ +... +LL | p3 = in(reg) p, + | ^^^^^^^^^^^^^^ + | + = note: `nomem` means that no memory write or read happens inside the asm! block + = note: if this is intentional and no pointers are read or written to, consider allowing the lint + = note: `-D clippy::pointers-in-nomem-asm-block` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::pointers_in_nomem_asm_block)]` + +error: passing pointers to nomem asm block + --> tests/ui/pointers_in_nomem_asm_block.rs:26:22 + | +LL | asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); + | ^^^^^^^^^^^^^ + | + = note: `nomem` means that no memory write or read happens inside the asm! block + = note: if this is intentional and no pointers are read or written to, consider allowing the lint + +error: passing pointers to nomem asm block + --> tests/ui/pointers_in_nomem_asm_block.rs:31:22 + | +LL | asm!("call {p}", p = in(reg) p, options(nomem)); + | ^^^^^^^^^^^^^ + | + = note: `nomem` means that no memory write or read happens inside the asm! block + = note: if this is intentional and no pointers are read or written to, consider allowing the lint + +error: aborting due to 3 previous errors + diff --git a/src/tools/clippy/tests/ui/ptr_arg.rs b/src/tools/clippy/tests/ui/ptr_arg.rs index e6ef6268121..e8b42d3b913 100644 --- a/src/tools/clippy/tests/ui/ptr_arg.rs +++ b/src/tools/clippy/tests/ui/ptr_arg.rs @@ -309,3 +309,25 @@ mod issue_11181 { extern "C" fn allowed(_v: &Vec<u32>) {} } } + +mod issue_13308 { + use std::ops::Deref; + + fn repro(source: &str, destination: &mut String) { + source.clone_into(destination); + } + fn repro2(source: &str, destination: &mut String) { + ToOwned::clone_into(source, destination); + } + + fn h1(_: &<String as Deref>::Target) {} + fn h2<T: Deref>(_: T, _: &T::Target) {} + + // Other cases that are still ok to lint and ideally shouldn't regress + fn good(v1: &String, v2: &String) { + //~^ ERROR: writing `&String` instead of `&str` + //~^^ ERROR: writing `&String` instead of `&str` + h1(v1); + h2(String::new(), v2); + } +} diff --git a/src/tools/clippy/tests/ui/ptr_arg.stderr b/src/tools/clippy/tests/ui/ptr_arg.stderr index 4246453e64c..1a6b3aa1f8d 100644 --- a/src/tools/clippy/tests/ui/ptr_arg.stderr +++ b/src/tools/clippy/tests/ui/ptr_arg.stderr @@ -221,5 +221,17 @@ error: using a reference to `Cow` is not recommended LL | fn cow_bad_ret_ty_2<'a, 'b>(input: &'a Cow<'a, str>) -> &'b str { | ^^^^^^^^^^^^^^^^ help: change this to: `&str` -error: aborting due to 25 previous errors +error: writing `&String` instead of `&str` involves a new object where a slice will do + --> tests/ui/ptr_arg.rs:327:17 + | +LL | fn good(v1: &String, v2: &String) { + | ^^^^^^^ help: change this to: `&str` + +error: writing `&String` instead of `&str` involves a new object where a slice will do + --> tests/ui/ptr_arg.rs:327:30 + | +LL | fn good(v1: &String, v2: &String) { + | ^^^^^^^ help: change this to: `&str` + +error: aborting due to 27 previous errors diff --git a/src/tools/clippy/tests/ui/ptr_cast_constness.fixed b/src/tools/clippy/tests/ui/ptr_cast_constness.fixed index 21ac42196e1..9a5272c7adc 100644 --- a/src/tools/clippy/tests/ui/ptr_cast_constness.fixed +++ b/src/tools/clippy/tests/ui/ptr_cast_constness.fixed @@ -68,3 +68,20 @@ fn _msrv_1_65() { let _ = ptr.cast_mut(); let _ = mut_ptr.cast_const(); } + +#[inline_macros] +fn null_pointers() { + use std::ptr; + let _ = std::ptr::null_mut::<String>(); + let _ = std::ptr::null::<u32>(); + let _ = std::ptr::null_mut::<u32>(); + let _ = std::ptr::null::<u32>(); + + // Make sure the lint is triggered inside a macro + let _ = inline!(std::ptr::null_mut::<u32>()); + let _ = inline!(std::ptr::null_mut::<u32>()); + + // Do not lint inside macros from external crates + let _ = external!(ptr::null::<u32>() as *mut u32); + let _ = external!(ptr::null::<u32>().cast_mut()); +} diff --git a/src/tools/clippy/tests/ui/ptr_cast_constness.rs b/src/tools/clippy/tests/ui/ptr_cast_constness.rs index 5ce590b2b7e..43ab5f5ba7c 100644 --- a/src/tools/clippy/tests/ui/ptr_cast_constness.rs +++ b/src/tools/clippy/tests/ui/ptr_cast_constness.rs @@ -68,3 +68,20 @@ fn _msrv_1_65() { let _ = ptr as *mut u32; let _ = mut_ptr as *const u32; } + +#[inline_macros] +fn null_pointers() { + use std::ptr; + let _ = ptr::null::<String>() as *mut String; + let _ = ptr::null_mut::<u32>() as *const u32; + let _ = ptr::null::<u32>().cast_mut(); + let _ = ptr::null_mut::<u32>().cast_const(); + + // Make sure the lint is triggered inside a macro + let _ = inline!(ptr::null::<u32>() as *mut u32); + let _ = inline!(ptr::null::<u32>().cast_mut()); + + // Do not lint inside macros from external crates + let _ = external!(ptr::null::<u32>() as *mut u32); + let _ = external!(ptr::null::<u32>().cast_mut()); +} diff --git a/src/tools/clippy/tests/ui/ptr_cast_constness.stderr b/src/tools/clippy/tests/ui/ptr_cast_constness.stderr index 2c52ebd3464..a693793a4ae 100644 --- a/src/tools/clippy/tests/ui/ptr_cast_constness.stderr +++ b/src/tools/clippy/tests/ui/ptr_cast_constness.stderr @@ -43,5 +43,45 @@ error: `as` casting between raw pointers while changing only its constness LL | let _ = mut_ptr as *const u32; | ^^^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast_const`, a safer alternative: `mut_ptr.cast_const()` -error: aborting due to 7 previous errors +error: `as` casting to make a const null pointer into a mutable null pointer + --> tests/ui/ptr_cast_constness.rs:75:13 + | +LL | let _ = ptr::null::<String>() as *mut String; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::<String>()` + +error: `as` casting to make a mutable null pointer into a const null pointer + --> tests/ui/ptr_cast_constness.rs:76:13 + | +LL | let _ = ptr::null_mut::<u32>() as *const u32; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null()` directly instead: `std::ptr::null::<u32>()` + +error: changing constness of a null pointer + --> tests/ui/ptr_cast_constness.rs:77:13 + | +LL | let _ = ptr::null::<u32>().cast_mut(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::<u32>()` + +error: changing constness of a null pointer + --> tests/ui/ptr_cast_constness.rs:78:13 + | +LL | let _ = ptr::null_mut::<u32>().cast_const(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null()` directly instead: `std::ptr::null::<u32>()` + +error: `as` casting to make a const null pointer into a mutable null pointer + --> tests/ui/ptr_cast_constness.rs:81:21 + | +LL | let _ = inline!(ptr::null::<u32>() as *mut u32); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::<u32>()` + | + = note: this error originates in the macro `__inline_mac_fn_null_pointers` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: changing constness of a null pointer + --> tests/ui/ptr_cast_constness.rs:82:21 + | +LL | let _ = inline!(ptr::null::<u32>().cast_mut()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::<u32>()` + | + = note: this error originates in the macro `__inline_mac_fn_null_pointers` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to 13 previous errors diff --git a/src/tools/clippy/tests/ui/ref_as_ptr.fixed b/src/tools/clippy/tests/ui/ref_as_ptr.fixed index 466a628a002..6048267092f 100644 --- a/src/tools/clippy/tests/ui/ref_as_ptr.fixed +++ b/src/tools/clippy/tests/ui/ref_as_ptr.fixed @@ -1,5 +1,5 @@ #![warn(clippy::ref_as_ptr)] -#![allow(clippy::unnecessary_mut_passed)] +#![allow(clippy::unnecessary_mut_passed, clippy::needless_lifetimes)] fn f<T>(_: T) {} diff --git a/src/tools/clippy/tests/ui/ref_as_ptr.rs b/src/tools/clippy/tests/ui/ref_as_ptr.rs index 0fdc753dc22..7f1d59b856e 100644 --- a/src/tools/clippy/tests/ui/ref_as_ptr.rs +++ b/src/tools/clippy/tests/ui/ref_as_ptr.rs @@ -1,5 +1,5 @@ #![warn(clippy::ref_as_ptr)] -#![allow(clippy::unnecessary_mut_passed)] +#![allow(clippy::unnecessary_mut_passed, clippy::needless_lifetimes)] fn f<T>(_: T) {} diff --git a/src/tools/clippy/tests/ui/ref_option/all/clippy.toml b/src/tools/clippy/tests/ui/ref_option/all/clippy.toml new file mode 100644 index 00000000000..cda8d17eed4 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/all/clippy.toml @@ -0,0 +1 @@ +avoid-breaking-exported-api = false diff --git a/src/tools/clippy/tests/ui/ref_option/private/clippy.toml b/src/tools/clippy/tests/ui/ref_option/private/clippy.toml new file mode 100644 index 00000000000..5f304987aa9 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/private/clippy.toml @@ -0,0 +1 @@ +avoid-breaking-exported-api = true diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option.all.fixed b/src/tools/clippy/tests/ui/ref_option/ref_option.all.fixed new file mode 100644 index 00000000000..47781a97c98 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option.all.fixed @@ -0,0 +1,62 @@ +//@revisions: private all +//@[private] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/private +//@[all] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/all + +#![allow(unused, clippy::needless_lifetimes, clippy::borrowed_box)] +#![warn(clippy::ref_option)] + +fn opt_u8(a: Option<&u8>) {} +fn opt_gen<T>(a: Option<&T>) {} +fn opt_string(a: std::option::Option<&String>) {} +fn ret_string<'a>(p: &'a str) -> Option<&'a u8> { + panic!() +} +fn ret_string_static() -> Option<&'static u8> { + panic!() +} +fn mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {} +fn ret_box<'a>() -> Option<&'a Box<u8>> { + panic!() +} + +pub fn pub_opt_string(a: Option<&String>) {} +pub fn pub_mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {} + +pub trait PubTrait { + fn pub_trait_opt(&self, a: Option<&Vec<u8>>); + fn pub_trait_ret(&self) -> Option<&Vec<u8>>; +} + +trait PrivateTrait { + fn trait_opt(&self, a: Option<&String>); + fn trait_ret(&self) -> Option<&String>; +} + +pub struct PubStruct; + +impl PubStruct { + pub fn pub_opt_params(&self, a: Option<&()>) {} + pub fn pub_opt_ret(&self) -> Option<&String> { + panic!() + } + + fn private_opt_params(&self, a: Option<&()>) {} + fn private_opt_ret(&self) -> Option<&String> { + panic!() + } +} + +// valid, don't change +fn mut_u8(a: &mut Option<u8>) {} +pub fn pub_mut_u8(a: &mut Option<String>) {} + +// might be good to catch in the future +fn mut_u8_ref(a: &mut &Option<u8>) {} +pub fn pub_mut_u8_ref(a: &mut &Option<String>) {} +fn lambdas() { + // Not handled for now, not sure if we should + let x = |a: &Option<String>| {}; + let x = |a: &Option<String>| -> &Option<String> { panic!() }; +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option.all.stderr b/src/tools/clippy/tests/ui/ref_option/ref_option.all.stderr new file mode 100644 index 00000000000..b4c69ac6296 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option.all.stderr @@ -0,0 +1,162 @@ +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:8:1 + | +LL | fn opt_u8(a: &Option<u8>) {} + | ^^^^^^^^^^^^^-----------^^^^ + | | + | help: change this to: `Option<&u8>` + | + = note: `-D clippy::ref-option` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ref_option)]` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:9:1 + | +LL | fn opt_gen<T>(a: &Option<T>) {} + | ^^^^^^^^^^^^^^^^^----------^^^^ + | | + | help: change this to: `Option<&T>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:10:1 + | +LL | fn opt_string(a: &std::option::Option<String>) {} + | ^^^^^^^^^^^^^^^^^----------------------------^^^^ + | | + | help: change this to: `std::option::Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:11:1 + | +LL | fn ret_string<'a>(p: &'a str) -> &'a Option<u8> { + | ^ -------------- help: change this to: `Option<&'a u8>` + | _| + | | +LL | | panic!() +LL | | } + | |_^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:14:1 + | +LL | fn ret_string_static() -> &'static Option<u8> { + | ^ ------------------- help: change this to: `Option<&'static u8>` + | _| + | | +LL | | panic!() +LL | | } + | |_^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:17:1 + | +LL | fn mult_string(a: &Option<String>, b: &Option<Vec<u8>>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL | fn mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {} + | ~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:18:1 + | +LL | fn ret_box<'a>() -> &'a Option<Box<u8>> { + | ^ ------------------- help: change this to: `Option<&'a Box<u8>>` + | _| + | | +LL | | panic!() +LL | | } + | |_^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:22:1 + | +LL | pub fn pub_opt_string(a: &Option<String>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^---------------^^^^ + | | + | help: change this to: `Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:23:1 + | +LL | pub fn pub_mult_string(a: &Option<String>, b: &Option<Vec<u8>>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL | pub fn pub_mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {} + | ~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:26:5 + | +LL | fn pub_trait_opt(&self, a: &Option<Vec<u8>>); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------^^ + | | + | help: change this to: `Option<&Vec<u8>>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:27:5 + | +LL | fn pub_trait_ret(&self) -> &Option<Vec<u8>>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------^ + | | + | help: change this to: `Option<&Vec<u8>>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:31:5 + | +LL | fn trait_opt(&self, a: &Option<String>); + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^^ + | | + | help: change this to: `Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:32:5 + | +LL | fn trait_ret(&self) -> &Option<String>; + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^ + | | + | help: change this to: `Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:38:5 + | +LL | pub fn pub_opt_params(&self, a: &Option<()>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------^^^^ + | | + | help: change this to: `Option<&()>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:39:5 + | +LL | pub fn pub_opt_ret(&self) -> &Option<String> { + | ^ --------------- help: change this to: `Option<&String>` + | _____| + | | +LL | | panic!() +LL | | } + | |_____^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:43:5 + | +LL | fn private_opt_params(&self, a: &Option<()>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------^^^^ + | | + | help: change this to: `Option<&()>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:44:5 + | +LL | fn private_opt_ret(&self) -> &Option<String> { + | ^ --------------- help: change this to: `Option<&String>` + | _____| + | | +LL | | panic!() +LL | | } + | |_____^ + +error: aborting due to 17 previous errors + diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option.private.fixed b/src/tools/clippy/tests/ui/ref_option/ref_option.private.fixed new file mode 100644 index 00000000000..8c42556e9b0 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option.private.fixed @@ -0,0 +1,62 @@ +//@revisions: private all +//@[private] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/private +//@[all] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/all + +#![allow(unused, clippy::needless_lifetimes, clippy::borrowed_box)] +#![warn(clippy::ref_option)] + +fn opt_u8(a: Option<&u8>) {} +fn opt_gen<T>(a: Option<&T>) {} +fn opt_string(a: std::option::Option<&String>) {} +fn ret_string<'a>(p: &'a str) -> Option<&'a u8> { + panic!() +} +fn ret_string_static() -> Option<&'static u8> { + panic!() +} +fn mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {} +fn ret_box<'a>() -> Option<&'a Box<u8>> { + panic!() +} + +pub fn pub_opt_string(a: &Option<String>) {} +pub fn pub_mult_string(a: &Option<String>, b: &Option<Vec<u8>>) {} + +pub trait PubTrait { + fn pub_trait_opt(&self, a: &Option<Vec<u8>>); + fn pub_trait_ret(&self) -> &Option<Vec<u8>>; +} + +trait PrivateTrait { + fn trait_opt(&self, a: Option<&String>); + fn trait_ret(&self) -> Option<&String>; +} + +pub struct PubStruct; + +impl PubStruct { + pub fn pub_opt_params(&self, a: &Option<()>) {} + pub fn pub_opt_ret(&self) -> &Option<String> { + panic!() + } + + fn private_opt_params(&self, a: Option<&()>) {} + fn private_opt_ret(&self) -> Option<&String> { + panic!() + } +} + +// valid, don't change +fn mut_u8(a: &mut Option<u8>) {} +pub fn pub_mut_u8(a: &mut Option<String>) {} + +// might be good to catch in the future +fn mut_u8_ref(a: &mut &Option<u8>) {} +pub fn pub_mut_u8_ref(a: &mut &Option<String>) {} +fn lambdas() { + // Not handled for now, not sure if we should + let x = |a: &Option<String>| {}; + let x = |a: &Option<String>| -> &Option<String> { panic!() }; +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option.private.stderr b/src/tools/clippy/tests/ui/ref_option/ref_option.private.stderr new file mode 100644 index 00000000000..17c90536da3 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option.private.stderr @@ -0,0 +1,108 @@ +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:8:1 + | +LL | fn opt_u8(a: &Option<u8>) {} + | ^^^^^^^^^^^^^-----------^^^^ + | | + | help: change this to: `Option<&u8>` + | + = note: `-D clippy::ref-option` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ref_option)]` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:9:1 + | +LL | fn opt_gen<T>(a: &Option<T>) {} + | ^^^^^^^^^^^^^^^^^----------^^^^ + | | + | help: change this to: `Option<&T>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:10:1 + | +LL | fn opt_string(a: &std::option::Option<String>) {} + | ^^^^^^^^^^^^^^^^^----------------------------^^^^ + | | + | help: change this to: `std::option::Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:11:1 + | +LL | fn ret_string<'a>(p: &'a str) -> &'a Option<u8> { + | ^ -------------- help: change this to: `Option<&'a u8>` + | _| + | | +LL | | panic!() +LL | | } + | |_^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:14:1 + | +LL | fn ret_string_static() -> &'static Option<u8> { + | ^ ------------------- help: change this to: `Option<&'static u8>` + | _| + | | +LL | | panic!() +LL | | } + | |_^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:17:1 + | +LL | fn mult_string(a: &Option<String>, b: &Option<Vec<u8>>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL | fn mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {} + | ~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:18:1 + | +LL | fn ret_box<'a>() -> &'a Option<Box<u8>> { + | ^ ------------------- help: change this to: `Option<&'a Box<u8>>` + | _| + | | +LL | | panic!() +LL | | } + | |_^ + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:31:5 + | +LL | fn trait_opt(&self, a: &Option<String>); + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^^ + | | + | help: change this to: `Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:32:5 + | +LL | fn trait_ret(&self) -> &Option<String>; + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^ + | | + | help: change this to: `Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:43:5 + | +LL | fn private_opt_params(&self, a: &Option<()>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------^^^^ + | | + | help: change this to: `Option<&()>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option.rs:44:5 + | +LL | fn private_opt_ret(&self) -> &Option<String> { + | ^ --------------- help: change this to: `Option<&String>` + | _____| + | | +LL | | panic!() +LL | | } + | |_____^ + +error: aborting due to 11 previous errors + diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option.rs b/src/tools/clippy/tests/ui/ref_option/ref_option.rs new file mode 100644 index 00000000000..05251bcf12c --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option.rs @@ -0,0 +1,62 @@ +//@revisions: private all +//@[private] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/private +//@[all] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/all + +#![allow(unused, clippy::needless_lifetimes, clippy::borrowed_box)] +#![warn(clippy::ref_option)] + +fn opt_u8(a: &Option<u8>) {} +fn opt_gen<T>(a: &Option<T>) {} +fn opt_string(a: &std::option::Option<String>) {} +fn ret_string<'a>(p: &'a str) -> &'a Option<u8> { + panic!() +} +fn ret_string_static() -> &'static Option<u8> { + panic!() +} +fn mult_string(a: &Option<String>, b: &Option<Vec<u8>>) {} +fn ret_box<'a>() -> &'a Option<Box<u8>> { + panic!() +} + +pub fn pub_opt_string(a: &Option<String>) {} +pub fn pub_mult_string(a: &Option<String>, b: &Option<Vec<u8>>) {} + +pub trait PubTrait { + fn pub_trait_opt(&self, a: &Option<Vec<u8>>); + fn pub_trait_ret(&self) -> &Option<Vec<u8>>; +} + +trait PrivateTrait { + fn trait_opt(&self, a: &Option<String>); + fn trait_ret(&self) -> &Option<String>; +} + +pub struct PubStruct; + +impl PubStruct { + pub fn pub_opt_params(&self, a: &Option<()>) {} + pub fn pub_opt_ret(&self) -> &Option<String> { + panic!() + } + + fn private_opt_params(&self, a: &Option<()>) {} + fn private_opt_ret(&self) -> &Option<String> { + panic!() + } +} + +// valid, don't change +fn mut_u8(a: &mut Option<u8>) {} +pub fn pub_mut_u8(a: &mut Option<String>) {} + +// might be good to catch in the future +fn mut_u8_ref(a: &mut &Option<u8>) {} +pub fn pub_mut_u8_ref(a: &mut &Option<String>) {} +fn lambdas() { + // Not handled for now, not sure if we should + let x = |a: &Option<String>| {}; + let x = |a: &Option<String>| -> &Option<String> { panic!() }; +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option_traits.all.stderr b/src/tools/clippy/tests/ui/ref_option/ref_option_traits.all.stderr new file mode 100644 index 00000000000..a9967168c12 --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option_traits.all.stderr @@ -0,0 +1,37 @@ +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option_traits.rs:10:5 + | +LL | fn pub_trait_opt(&self, a: &Option<Vec<u8>>); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------^^ + | | + | help: change this to: `Option<&Vec<u8>>` + | + = note: `-D clippy::ref-option` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ref_option)]` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option_traits.rs:11:5 + | +LL | fn pub_trait_ret(&self) -> &Option<Vec<u8>>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------^ + | | + | help: change this to: `Option<&Vec<u8>>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option_traits.rs:15:5 + | +LL | fn trait_opt(&self, a: &Option<String>); + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^^ + | | + | help: change this to: `Option<&String>` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option_traits.rs:16:5 + | +LL | fn trait_ret(&self) -> &Option<String>; + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^ + | | + | help: change this to: `Option<&String>` + +error: aborting due to 4 previous errors + diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option_traits.private.stderr b/src/tools/clippy/tests/ui/ref_option/ref_option_traits.private.stderr new file mode 100644 index 00000000000..36d0833af8a --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option_traits.private.stderr @@ -0,0 +1,21 @@ +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option_traits.rs:15:5 + | +LL | fn trait_opt(&self, a: &Option<String>); + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^^ + | | + | help: change this to: `Option<&String>` + | + = note: `-D clippy::ref-option` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ref_option)]` + +error: it is more idiomatic to use `Option<&T>` instead of `&Option<T>` + --> tests/ui/ref_option/ref_option_traits.rs:16:5 + | +LL | fn trait_ret(&self) -> &Option<String>; + | ^^^^^^^^^^^^^^^^^^^^^^^---------------^ + | | + | help: change this to: `Option<&String>` + +error: aborting due to 2 previous errors + diff --git a/src/tools/clippy/tests/ui/ref_option/ref_option_traits.rs b/src/tools/clippy/tests/ui/ref_option/ref_option_traits.rs new file mode 100644 index 00000000000..5d5f113c83d --- /dev/null +++ b/src/tools/clippy/tests/ui/ref_option/ref_option_traits.rs @@ -0,0 +1,37 @@ +//@no-rustfix: fixes are only done to traits, not the impls +//@revisions: private all +//@[private] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/private +//@[all] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/all + +#![allow(unused, clippy::all)] +#![warn(clippy::ref_option)] + +pub trait PubTrait { + fn pub_trait_opt(&self, a: &Option<Vec<u8>>); + fn pub_trait_ret(&self) -> &Option<Vec<u8>>; +} + +trait PrivateTrait { + fn trait_opt(&self, a: &Option<String>); + fn trait_ret(&self) -> &Option<String>; +} + +pub struct PubStruct; + +impl PubTrait for PubStruct { + fn pub_trait_opt(&self, a: &Option<Vec<u8>>) {} + fn pub_trait_ret(&self) -> &Option<Vec<u8>> { + panic!() + } +} + +struct PrivateStruct; + +impl PrivateTrait for PrivateStruct { + fn trait_opt(&self, a: &Option<String>) {} + fn trait_ret(&self) -> &Option<String> { + panic!() + } +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/result_large_err.rs b/src/tools/clippy/tests/ui/result_large_err.rs index b25348bf996..9c39f023da2 100644 --- a/src/tools/clippy/tests/ui/result_large_err.rs +++ b/src/tools/clippy/tests/ui/result_large_err.rs @@ -1,4 +1,4 @@ -//@ignore-32bit +//@ignore-bitwidth: 32 #![warn(clippy::result_large_err)] #![allow(clippy::large_enum_variant)] diff --git a/src/tools/clippy/tests/ui/serde.rs b/src/tools/clippy/tests/ui/serde.rs index 610a50020ec..af8b10f3e6a 100644 --- a/src/tools/clippy/tests/ui/serde.rs +++ b/src/tools/clippy/tests/ui/serde.rs @@ -1,5 +1,5 @@ #![warn(clippy::serde_api_misuse)] -#![allow(dead_code)] +#![allow(dead_code, clippy::needless_lifetimes)] extern crate serde; diff --git a/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.rs b/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.rs index 0db6fbfb7be..8468d1d7c7d 100644 --- a/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.rs +++ b/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.rs @@ -2,7 +2,12 @@ //@no-rustfix #![warn(clippy::significant_drop_in_scrutinee)] #![allow(dead_code, unused_assignments)] -#![allow(clippy::match_single_binding, clippy::single_match, clippy::uninlined_format_args)] +#![allow( + clippy::match_single_binding, + clippy::single_match, + clippy::uninlined_format_args, + clippy::needless_lifetimes +)] use std::num::ParseIntError; use std::ops::Deref; diff --git a/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.stderr b/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.stderr index c0c93cd10c0..62030cbe70e 100644 --- a/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.stderr +++ b/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.stderr @@ -1,5 +1,5 @@ error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:55:11 + --> tests/ui/significant_drop_in_scrutinee.rs:60:11 | LL | match mutex.lock().unwrap().foo() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -20,7 +20,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:143:11 + --> tests/ui/significant_drop_in_scrutinee.rs:148:11 | LL | match s.lock_m().get_the_value() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -42,7 +42,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:166:11 + --> tests/ui/significant_drop_in_scrutinee.rs:171:11 | LL | match s.lock_m_m().get_the_value() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -64,7 +64,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:216:11 + --> tests/ui/significant_drop_in_scrutinee.rs:221:11 | LL | match counter.temp_increment().len() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -80,7 +80,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:241:16 + --> tests/ui/significant_drop_in_scrutinee.rs:246:16 | LL | match (mutex1.lock().unwrap().s.len(), true) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -99,7 +99,7 @@ LL ~ match (value, true) { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:252:22 + --> tests/ui/significant_drop_in_scrutinee.rs:257:22 | LL | match (true, mutex1.lock().unwrap().s.len(), true) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -118,7 +118,7 @@ LL ~ match (true, value, true) { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:264:16 + --> tests/ui/significant_drop_in_scrutinee.rs:269:16 | LL | match (mutex1.lock().unwrap().s.len(), true, mutex2.lock().unwrap().s.len()) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -139,7 +139,7 @@ LL ~ match (value, true, mutex2.lock().unwrap().s.len()) { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:264:54 + --> tests/ui/significant_drop_in_scrutinee.rs:269:54 | LL | match (mutex1.lock().unwrap().s.len(), true, mutex2.lock().unwrap().s.len()) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -160,7 +160,7 @@ LL ~ match (mutex1.lock().unwrap().s.len(), true, value) { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:319:11 + --> tests/ui/significant_drop_in_scrutinee.rs:324:11 | LL | match mutex.lock().unwrap().s.len() > 1 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -179,7 +179,7 @@ LL ~ match value > 1 { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:328:15 + --> tests/ui/significant_drop_in_scrutinee.rs:333:15 | LL | match 1 < mutex.lock().unwrap().s.len() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -198,7 +198,7 @@ LL ~ match 1 < value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:348:11 + --> tests/ui/significant_drop_in_scrutinee.rs:353:11 | LL | match mutex1.lock().unwrap().s.len() < mutex2.lock().unwrap().s.len() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -219,7 +219,7 @@ LL ~ match value < mutex2.lock().unwrap().s.len() { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:348:44 + --> tests/ui/significant_drop_in_scrutinee.rs:353:44 | LL | match mutex1.lock().unwrap().s.len() < mutex2.lock().unwrap().s.len() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -240,7 +240,7 @@ LL ~ match mutex1.lock().unwrap().s.len() < value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:361:11 + --> tests/ui/significant_drop_in_scrutinee.rs:366:11 | LL | match mutex1.lock().unwrap().s.len() >= mutex2.lock().unwrap().s.len() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -261,7 +261,7 @@ LL ~ match value >= mutex2.lock().unwrap().s.len() { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:361:45 + --> tests/ui/significant_drop_in_scrutinee.rs:366:45 | LL | match mutex1.lock().unwrap().s.len() >= mutex2.lock().unwrap().s.len() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -282,7 +282,7 @@ LL ~ match mutex1.lock().unwrap().s.len() >= value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:398:11 + --> tests/ui/significant_drop_in_scrutinee.rs:403:11 | LL | match get_mutex_guard().s.len() > 1 { | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -301,7 +301,7 @@ LL ~ match value > 1 { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:417:11 + --> tests/ui/significant_drop_in_scrutinee.rs:422:11 | LL | match match i { | ___________^ @@ -334,7 +334,7 @@ LL ~ match value | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:445:11 + --> tests/ui/significant_drop_in_scrutinee.rs:450:11 | LL | match if i > 1 { | ___________^ @@ -368,7 +368,7 @@ LL ~ match value | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:501:11 + --> tests/ui/significant_drop_in_scrutinee.rs:506:11 | LL | match s.lock().deref().deref() { | ^^^^^^^^^^^^^^^^^^^^^^^^ @@ -386,7 +386,7 @@ LL ~ match (&value) { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:551:11 + --> tests/ui/significant_drop_in_scrutinee.rs:556:11 | LL | match mutex.lock().unwrap().i = i { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -405,7 +405,7 @@ LL ~ match () { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:559:15 + --> tests/ui/significant_drop_in_scrutinee.rs:564:15 | LL | match i = mutex.lock().unwrap().i { | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -424,7 +424,7 @@ LL ~ match i = value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:567:11 + --> tests/ui/significant_drop_in_scrutinee.rs:572:11 | LL | match mutex.lock().unwrap().i += 1 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -443,7 +443,7 @@ LL ~ match () { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:575:16 + --> tests/ui/significant_drop_in_scrutinee.rs:580:16 | LL | match i += mutex.lock().unwrap().i { | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -462,7 +462,7 @@ LL ~ match i += value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:640:11 + --> tests/ui/significant_drop_in_scrutinee.rs:645:11 | LL | match rwlock.read().unwrap().to_number() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -478,7 +478,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:668:11 + --> tests/ui/significant_drop_in_scrutinee.rs:673:11 | LL | match mutex.lock().unwrap().foo() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -494,7 +494,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression - --> tests/ui/significant_drop_in_scrutinee.rs:731:11 + --> tests/ui/significant_drop_in_scrutinee.rs:736:11 | LL | match guard.take().len() { | ^^^^^^^^^^^^^^^^^^ @@ -510,7 +510,7 @@ LL ~ match value { | error: temporary with significant `Drop` in `for` loop condition will live until the end of the `for` expression - --> tests/ui/significant_drop_in_scrutinee.rs:757:16 + --> tests/ui/significant_drop_in_scrutinee.rs:762:16 | LL | for val in mutex.lock().unwrap().copy_old_lifetime() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -526,7 +526,7 @@ LL ~ for val in value { | error: temporary with significant `Drop` in `for` loop condition will live until the end of the `for` expression - --> tests/ui/significant_drop_in_scrutinee.rs:797:17 + --> tests/ui/significant_drop_in_scrutinee.rs:802:17 | LL | for val in [mutex.lock().unwrap()[0], 2] { | ^^^^^^^^^^^^^^^^^^^^^^^^ @@ -542,7 +542,7 @@ LL ~ for val in [value, 2] { | error: temporary with significant `Drop` in `if let` scrutinee will live until the end of the `if let` expression - --> tests/ui/significant_drop_in_scrutinee.rs:807:24 + --> tests/ui/significant_drop_in_scrutinee.rs:812:24 | LL | if let Some(val) = mutex.lock().unwrap().first().copied() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -558,7 +558,7 @@ LL ~ if let Some(val) = value { | error: temporary with significant `Drop` in `while let` scrutinee will live until the end of the `while let` expression - --> tests/ui/significant_drop_in_scrutinee.rs:823:27 + --> tests/ui/significant_drop_in_scrutinee.rs:828:27 | LL | while let Some(val) = mutex.lock().unwrap().pop() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/single_call_fn.rs b/src/tools/clippy/tests/ui/single_call_fn.rs index 55e7508a957..a0597664da5 100644 --- a/src/tools/clippy/tests/ui/single_call_fn.rs +++ b/src/tools/clippy/tests/ui/single_call_fn.rs @@ -1,4 +1,4 @@ -//@ignore-32bit +//@ignore-bitwidth: 32 //@aux-build:proc_macros.rs #![allow(clippy::redundant_closure_call, unused)] #![warn(clippy::single_call_fn)] diff --git a/src/tools/clippy/tests/ui/single_match.fixed b/src/tools/clippy/tests/ui/single_match.fixed index 5249c440889..4016b2699d6 100644 --- a/src/tools/clippy/tests/ui/single_match.fixed +++ b/src/tools/clippy/tests/ui/single_match.fixed @@ -39,8 +39,8 @@ enum Foo { Bar, Baz(u8), } -use std::borrow::Cow; use Foo::*; +use std::borrow::Cow; fn single_match_know_enum() { let x = Some(1u8); @@ -296,3 +296,27 @@ fn issue11365() { if let Some(A | B) = &Some(A) { println!() } } + +#[derive(Eq, PartialEq)] +pub struct Data([u8; 4]); + +const DATA: Data = Data([1, 2, 3, 4]); +const CONST_I32: i32 = 1; + +fn irrefutable_match() { + println!(); + + println!(); + + let i = 0; + { + let a = 1; + let b = 2; + } + + + + + + println!() +} diff --git a/src/tools/clippy/tests/ui/single_match.rs b/src/tools/clippy/tests/ui/single_match.rs index 882098a56e7..75edaa60605 100644 --- a/src/tools/clippy/tests/ui/single_match.rs +++ b/src/tools/clippy/tests/ui/single_match.rs @@ -51,8 +51,8 @@ enum Foo { Bar, Baz(u8), } -use std::borrow::Cow; use Foo::*; +use std::borrow::Cow; fn single_match_know_enum() { let x = Some(1u8); @@ -360,3 +360,45 @@ fn issue11365() { None | Some(_) => {}, } } + +#[derive(Eq, PartialEq)] +pub struct Data([u8; 4]); + +const DATA: Data = Data([1, 2, 3, 4]); +const CONST_I32: i32 = 1; + +fn irrefutable_match() { + match DATA { + DATA => println!(), + _ => {}, + } + + match CONST_I32 { + CONST_I32 => println!(), + _ => {}, + } + + let i = 0; + match i { + i => { + let a = 1; + let b = 2; + }, + _ => {}, + } + + match i { + i => {}, + _ => {}, + } + + match i { + i => (), + _ => (), + } + + match CONST_I32 { + CONST_I32 => println!(), + _ => {}, + } +} diff --git a/src/tools/clippy/tests/ui/single_match.stderr b/src/tools/clippy/tests/ui/single_match.stderr index ceb2a193bf7..9240b09c50a 100644 --- a/src/tools/clippy/tests/ui/single_match.stderr +++ b/src/tools/clippy/tests/ui/single_match.stderr @@ -216,5 +216,70 @@ LL | | None | Some(_) => {}, LL | | } | |_____^ help: try: `if let Some(A | B) = &Some(A) { println!() }` -error: aborting due to 20 previous errors +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match.rs:371:5 + | +LL | / match DATA { +LL | | DATA => println!(), +LL | | _ => {}, +LL | | } + | |_____^ help: try: `println!();` + +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match.rs:376:5 + | +LL | / match CONST_I32 { +LL | | CONST_I32 => println!(), +LL | | _ => {}, +LL | | } + | |_____^ help: try: `println!();` + +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match.rs:382:5 + | +LL | / match i { +LL | | i => { +LL | | let a = 1; +LL | | let b = 2; +LL | | }, +LL | | _ => {}, +LL | | } + | |_____^ + | +help: try + | +LL ~ { +LL + let a = 1; +LL + let b = 2; +LL + } + | + +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match.rs:390:5 + | +LL | / match i { +LL | | i => {}, +LL | | _ => {}, +LL | | } + | |_____^ help: `match` expression can be removed + +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match.rs:395:5 + | +LL | / match i { +LL | | i => (), +LL | | _ => (), +LL | | } + | |_____^ help: `match` expression can be removed + +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match.rs:400:5 + | +LL | / match CONST_I32 { +LL | | CONST_I32 => println!(), +LL | | _ => {}, +LL | | } + | |_____^ help: try: `println!()` + +error: aborting due to 26 previous errors diff --git a/src/tools/clippy/tests/ui/single_match_else.fixed b/src/tools/clippy/tests/ui/single_match_else.fixed index 163be16ad8b..c2ca746976b 100644 --- a/src/tools/clippy/tests/ui/single_match_else.fixed +++ b/src/tools/clippy/tests/ui/single_match_else.fixed @@ -171,3 +171,7 @@ fn issue_10808(bar: Option<i32>) { }, } } + +fn irrefutable_match() -> Option<&'static ExprNode> { + Some(&NODE) +} diff --git a/src/tools/clippy/tests/ui/single_match_else.rs b/src/tools/clippy/tests/ui/single_match_else.rs index 3f1fd2b3183..2d9e877ee0f 100644 --- a/src/tools/clippy/tests/ui/single_match_else.rs +++ b/src/tools/clippy/tests/ui/single_match_else.rs @@ -199,3 +199,13 @@ fn issue_10808(bar: Option<i32>) { }, } } + +fn irrefutable_match() -> Option<&'static ExprNode> { + match ExprNode::Butterflies { + ExprNode::Butterflies => Some(&NODE), + _ => { + let x = 5; + None + }, + } +} diff --git a/src/tools/clippy/tests/ui/single_match_else.stderr b/src/tools/clippy/tests/ui/single_match_else.stderr index 61c348260d0..a2801751a43 100644 --- a/src/tools/clippy/tests/ui/single_match_else.stderr +++ b/src/tools/clippy/tests/ui/single_match_else.stderr @@ -197,5 +197,17 @@ LL + println!("None"); LL + } | -error: aborting due to 9 previous errors +error: this pattern is irrefutable, `match` is useless + --> tests/ui/single_match_else.rs:204:5 + | +LL | / match ExprNode::Butterflies { +LL | | ExprNode::Butterflies => Some(&NODE), +LL | | _ => { +LL | | let x = 5; +LL | | None +LL | | }, +LL | | } + | |_____^ help: try: `Some(&NODE)` + +error: aborting due to 10 previous errors diff --git a/src/tools/clippy/tests/ui/str_split.fixed b/src/tools/clippy/tests/ui/str_split.fixed index 4f33241da7a..57a3c315a87 100644 --- a/src/tools/clippy/tests/ui/str_split.fixed +++ b/src/tools/clippy/tests/ui/str_split.fixed @@ -1,4 +1,5 @@ #![warn(clippy::str_split_at_newline)] +#![allow(clippy::needless_lifetimes)] use core::str::Split; use std::ops::Deref; diff --git a/src/tools/clippy/tests/ui/str_split.rs b/src/tools/clippy/tests/ui/str_split.rs index f24caa61c30..fcff036f264 100644 --- a/src/tools/clippy/tests/ui/str_split.rs +++ b/src/tools/clippy/tests/ui/str_split.rs @@ -1,4 +1,5 @@ #![warn(clippy::str_split_at_newline)] +#![allow(clippy::needless_lifetimes)] use core::str::Split; use std::ops::Deref; diff --git a/src/tools/clippy/tests/ui/str_split.stderr b/src/tools/clippy/tests/ui/str_split.stderr index ebe0d4ef4d3..7b560468f12 100644 --- a/src/tools/clippy/tests/ui/str_split.stderr +++ b/src/tools/clippy/tests/ui/str_split.stderr @@ -1,5 +1,5 @@ error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:59:13 + --> tests/ui/str_split.rs:60:13 | LL | let _ = s1.trim().split('\n'); | ^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s1.lines()` @@ -8,55 +8,55 @@ LL | let _ = s1.trim().split('\n'); = help: to override `-D warnings` add `#[allow(clippy::str_split_at_newline)]` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:61:13 + --> tests/ui/str_split.rs:62:13 | LL | let _ = s1.trim().split("\n"); | ^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s1.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:62:13 + --> tests/ui/str_split.rs:63:13 | LL | let _ = s1.trim().split("\r\n"); | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s1.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:65:13 + --> tests/ui/str_split.rs:66:13 | LL | let _ = s2.trim().split('\n'); | ^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s2.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:67:13 + --> tests/ui/str_split.rs:68:13 | LL | let _ = s2.trim().split("\n"); | ^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s2.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:68:13 + --> tests/ui/str_split.rs:69:13 | LL | let _ = s2.trim().split("\r\n"); | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s2.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:72:13 + --> tests/ui/str_split.rs:73:13 | LL | let _ = s3.trim().split('\n'); | ^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s3.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:74:13 + --> tests/ui/str_split.rs:75:13 | LL | let _ = s3.trim().split("\n"); | ^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s3.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:75:13 + --> tests/ui/str_split.rs:76:13 | LL | let _ = s3.trim().split("\r\n"); | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `s3.lines()` error: using `str.trim().split()` with hard-coded newlines - --> tests/ui/str_split.rs:78:13 + --> tests/ui/str_split.rs:79:13 | LL | let _ = make_str!(s1).trim().split('\n'); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `str.lines()` instead: `make_str!(s1).lines()` diff --git a/src/tools/clippy/tests/ui/string_slice.rs b/src/tools/clippy/tests/ui/string_slice.rs index 1d1911aaa1d..dc519493a4d 100644 --- a/src/tools/clippy/tests/ui/string_slice.rs +++ b/src/tools/clippy/tests/ui/string_slice.rs @@ -1,7 +1,7 @@ -use std::borrow::Cow; +#![warn(clippy::string_slice)] +#![allow(clippy::no_effect)] -#[warn(clippy::string_slice)] -#[allow(clippy::no_effect)] +use std::borrow::Cow; fn main() { &"Ölkanne"[1..]; diff --git a/src/tools/clippy/tests/ui/suspicious_command_arg_space.fixed b/src/tools/clippy/tests/ui/suspicious_command_arg_space.fixed index 5d7b1e0c17f..704d6ea1bb8 100644 --- a/src/tools/clippy/tests/ui/suspicious_command_arg_space.fixed +++ b/src/tools/clippy/tests/ui/suspicious_command_arg_space.fixed @@ -1,3 +1,4 @@ +#![allow(clippy::zombie_processes)] fn main() { // Things it should warn about: std::process::Command::new("echo").args(["-n", "hello"]).spawn().unwrap(); diff --git a/src/tools/clippy/tests/ui/suspicious_command_arg_space.rs b/src/tools/clippy/tests/ui/suspicious_command_arg_space.rs index 8abd9803a0c..2a2a7557381 100644 --- a/src/tools/clippy/tests/ui/suspicious_command_arg_space.rs +++ b/src/tools/clippy/tests/ui/suspicious_command_arg_space.rs @@ -1,3 +1,4 @@ +#![allow(clippy::zombie_processes)] fn main() { // Things it should warn about: std::process::Command::new("echo").arg("-n hello").spawn().unwrap(); diff --git a/src/tools/clippy/tests/ui/suspicious_command_arg_space.stderr b/src/tools/clippy/tests/ui/suspicious_command_arg_space.stderr index d2517b66b56..6fd07d07d7b 100644 --- a/src/tools/clippy/tests/ui/suspicious_command_arg_space.stderr +++ b/src/tools/clippy/tests/ui/suspicious_command_arg_space.stderr @@ -1,5 +1,5 @@ error: single argument that looks like it should be multiple arguments - --> tests/ui/suspicious_command_arg_space.rs:3:44 + --> tests/ui/suspicious_command_arg_space.rs:4:44 | LL | std::process::Command::new("echo").arg("-n hello").spawn().unwrap(); | ^^^^^^^^^^ @@ -12,7 +12,7 @@ LL | std::process::Command::new("echo").args(["-n", "hello"]).spawn().unwrap | ~~~~ ~~~~~~~~~~~~~~~ error: single argument that looks like it should be multiple arguments - --> tests/ui/suspicious_command_arg_space.rs:6:43 + --> tests/ui/suspicious_command_arg_space.rs:7:43 | LL | std::process::Command::new("cat").arg("--number file").spawn().unwrap(); | ^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/suspicious_to_owned.rs b/src/tools/clippy/tests/ui/suspicious_to_owned.rs index f32b07d45f6..794c2e7174a 100644 --- a/src/tools/clippy/tests/ui/suspicious_to_owned.rs +++ b/src/tools/clippy/tests/ui/suspicious_to_owned.rs @@ -3,7 +3,7 @@ #![warn(clippy::implicit_clone)] #![allow(clippy::redundant_clone)] use std::borrow::Cow; -use std::ffi::{c_char, CStr}; +use std::ffi::{CStr, c_char}; fn main() { let moo = "Moooo"; diff --git a/src/tools/clippy/tests/ui/tabs_in_doc_comments.fixed b/src/tools/clippy/tests/ui/tabs_in_doc_comments.fixed index 26cc5c27e88..3536c1746df 100644 --- a/src/tools/clippy/tests/ui/tabs_in_doc_comments.fixed +++ b/src/tools/clippy/tests/ui/tabs_in_doc_comments.fixed @@ -1,5 +1,4 @@ #![warn(clippy::tabs_in_doc_comments)] -#[allow(dead_code)] /// /// Struct to hold two strings: diff --git a/src/tools/clippy/tests/ui/tabs_in_doc_comments.rs b/src/tools/clippy/tests/ui/tabs_in_doc_comments.rs index 14b06966ecc..033a685066e 100644 --- a/src/tools/clippy/tests/ui/tabs_in_doc_comments.rs +++ b/src/tools/clippy/tests/ui/tabs_in_doc_comments.rs @@ -1,5 +1,4 @@ #![warn(clippy::tabs_in_doc_comments)] -#[allow(dead_code)] /// /// Struct to hold two strings: diff --git a/src/tools/clippy/tests/ui/tabs_in_doc_comments.stderr b/src/tools/clippy/tests/ui/tabs_in_doc_comments.stderr index aef6c391452..f8d30b728e5 100644 --- a/src/tools/clippy/tests/ui/tabs_in_doc_comments.stderr +++ b/src/tools/clippy/tests/ui/tabs_in_doc_comments.stderr @@ -1,5 +1,5 @@ error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:6:5 + --> tests/ui/tabs_in_doc_comments.rs:5:5 | LL | /// - first one | ^^^^ help: consider using four spaces per tab @@ -8,43 +8,43 @@ LL | /// - first one = help: to override `-D warnings` add `#[allow(clippy::tabs_in_doc_comments)]` error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:6:13 + --> tests/ui/tabs_in_doc_comments.rs:5:13 | LL | /// - first one | ^^^^^^^^ help: consider using four spaces per tab error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:7:5 + --> tests/ui/tabs_in_doc_comments.rs:6:5 | LL | /// - second one | ^^^^ help: consider using four spaces per tab error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:7:14 + --> tests/ui/tabs_in_doc_comments.rs:6:14 | LL | /// - second one | ^^^^ help: consider using four spaces per tab error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:10:9 + --> tests/ui/tabs_in_doc_comments.rs:9:9 | LL | /// - First String: | ^^^^ help: consider using four spaces per tab error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:11:9 + --> tests/ui/tabs_in_doc_comments.rs:10:9 | LL | /// - needs to be inside here | ^^^^^^^^ help: consider using four spaces per tab error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:14:9 + --> tests/ui/tabs_in_doc_comments.rs:13:9 | LL | /// - Second String: | ^^^^ help: consider using four spaces per tab error: using tabs in doc comments is not recommended - --> tests/ui/tabs_in_doc_comments.rs:15:9 + --> tests/ui/tabs_in_doc_comments.rs:14:9 | LL | /// - needs to be inside here | ^^^^^^^^ help: consider using four spaces per tab diff --git a/src/tools/clippy/tests/ui/temporary_assignment.rs b/src/tools/clippy/tests/ui/temporary_assignment.rs index 383e70be925..d269f91b9fa 100644 --- a/src/tools/clippy/tests/ui/temporary_assignment.rs +++ b/src/tools/clippy/tests/ui/temporary_assignment.rs @@ -1,5 +1,5 @@ #![warn(clippy::temporary_assignment)] -#![allow(const_item_mutation)] +#![allow(clippy::needless_lifetimes)] use std::ops::{Deref, DerefMut}; diff --git a/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.rs b/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.rs index 1042249c5b7..7d0a37cde46 100644 --- a/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.rs +++ b/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.rs @@ -2,6 +2,16 @@ #![warn(clippy::too_long_first_doc_paragraph)] +pub mod foo { + + // in foo.rs + //! A very short summary. + //! A much longer explanation that goes into a lot more detail about + //! how the thing works, possibly with doclinks and so one, + //! and probably spanning a many rows. Blablabla, it needs to be over + //! 200 characters so I needed to write something longeeeeeeer. +} + /// Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris arcu libero, /// gravida non lacinia at, rhoncus eu lacus. diff --git a/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.stderr b/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.stderr index 7f48e5cf884..39926647f54 100644 --- a/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.stderr +++ b/src/tools/clippy/tests/ui/too_long_first_doc_paragraph.stderr @@ -1,16 +1,32 @@ error: first doc comment paragraph is too long - --> tests/ui/too_long_first_doc_paragraph.rs:5:1 + --> tests/ui/too_long_first_doc_paragraph.rs:8:5 + | +LL | / //! A very short summary. +LL | | //! A much longer explanation that goes into a lot more detail about +LL | | //! how the thing works, possibly with doclinks and so one, +LL | | //! and probably spanning a many rows. Blablabla, it needs to be over +LL | | //! 200 characters so I needed to write something longeeeeeeer. + | |____^ + | + = note: `-D clippy::too-long-first-doc-paragraph` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::too_long_first_doc_paragraph)]` +help: add an empty line + | +LL ~ //! A very short summary. +LL + //! +LL ~ //! A much longer explanation that goes into a lot more detail about + | + +error: first doc comment paragraph is too long + --> tests/ui/too_long_first_doc_paragraph.rs:15:1 | LL | / /// Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia LL | | /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris arcu libero, LL | | /// gravida non lacinia at, rhoncus eu lacus. | |_ - | - = note: `-D clippy::too-long-first-doc-paragraph` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::too_long_first_doc_paragraph)]` error: first doc comment paragraph is too long - --> tests/ui/too_long_first_doc_paragraph.rs:26:1 + --> tests/ui/too_long_first_doc_paragraph.rs:36:1 | LL | / /// Lorem LL | | /// ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia @@ -18,5 +34,5 @@ LL | | /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris a LL | | /// gravida non lacinia at, rhoncus eu lacus. | |_ -error: aborting due to 2 previous errors +error: aborting due to 3 previous errors diff --git a/src/tools/clippy/tests/ui/transmute_32bit.rs b/src/tools/clippy/tests/ui/transmute_32bit.rs index 8e1316ca39d..e162bbb2d92 100644 --- a/src/tools/clippy/tests/ui/transmute_32bit.rs +++ b/src/tools/clippy/tests/ui/transmute_32bit.rs @@ -1,4 +1,4 @@ -//@ignore-64bit +//@ignore-bitwidth: 64 #[warn(clippy::wrong_transmute)] fn main() { diff --git a/src/tools/clippy/tests/ui/transmute_64bit.rs b/src/tools/clippy/tests/ui/transmute_64bit.rs index 767cc503a39..fd0ad74bcfa 100644 --- a/src/tools/clippy/tests/ui/transmute_64bit.rs +++ b/src/tools/clippy/tests/ui/transmute_64bit.rs @@ -1,4 +1,4 @@ -//@ignore-32bit +//@ignore-bitwidth: 32 #[warn(clippy::wrong_transmute)] fn main() { diff --git a/src/tools/clippy/tests/ui/transmute_collection.rs b/src/tools/clippy/tests/ui/transmute_collection.rs index e30b34a5d7d..6748b66e0eb 100644 --- a/src/tools/clippy/tests/ui/transmute_collection.rs +++ b/src/tools/clippy/tests/ui/transmute_collection.rs @@ -2,7 +2,7 @@ #![allow(clippy::missing_transmute_annotations)] use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque}; -use std::mem::{transmute, MaybeUninit}; +use std::mem::{MaybeUninit, transmute}; fn main() { unsafe { diff --git a/src/tools/clippy/tests/ui/transmute_float_to_int.fixed b/src/tools/clippy/tests/ui/transmute_float_to_int.fixed index 83814ca43b9..075a198918a 100644 --- a/src/tools/clippy/tests/ui/transmute_float_to_int.fixed +++ b/src/tools/clippy/tests/ui/transmute_float_to_int.fixed @@ -1,7 +1,7 @@ #![warn(clippy::transmute_float_to_int)] #![allow(clippy::missing_transmute_annotations)] -#![feature(f128, f128_const)] -#![feature(f16, f16_const)] +#![feature(f128)] +#![feature(f16)] fn float_to_int() { let _: u32 = unsafe { 1f32.to_bits() }; diff --git a/src/tools/clippy/tests/ui/transmute_float_to_int.rs b/src/tools/clippy/tests/ui/transmute_float_to_int.rs index 64d6e917203..12541b2f7cf 100644 --- a/src/tools/clippy/tests/ui/transmute_float_to_int.rs +++ b/src/tools/clippy/tests/ui/transmute_float_to_int.rs @@ -1,7 +1,7 @@ #![warn(clippy::transmute_float_to_int)] #![allow(clippy::missing_transmute_annotations)] -#![feature(f128, f128_const)] -#![feature(f16, f16_const)] +#![feature(f128)] +#![feature(f16)] fn float_to_int() { let _: u32 = unsafe { std::mem::transmute(1f32) }; diff --git a/src/tools/clippy/tests/ui/transmute_undefined_repr.rs b/src/tools/clippy/tests/ui/transmute_undefined_repr.rs index dd4bac7f1ed..5b16d71f114 100644 --- a/src/tools/clippy/tests/ui/transmute_undefined_repr.rs +++ b/src/tools/clippy/tests/ui/transmute_undefined_repr.rs @@ -8,7 +8,7 @@ use core::any::TypeId; use core::ffi::c_void; -use core::mem::{size_of, transmute, MaybeUninit}; +use core::mem::{MaybeUninit, size_of, transmute}; use core::ptr::NonNull; fn value<T>() -> T { diff --git a/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.fixed b/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.fixed index e95054a7ccb..617d32d1fa7 100644 --- a/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.fixed +++ b/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.fixed @@ -84,8 +84,11 @@ fn issue_10449() { } // Pointers cannot be cast to integers in const contexts +#[allow(ptr_to_integer_transmute_in_consts, reason = "This is tested in the compiler test suite")] const fn issue_12402<P>(ptr: *const P) { - unsafe { transmute::<*const i32, usize>(&42i32) }; - unsafe { transmute::<fn(*const P), usize>(issue_12402) }; - let _ = unsafe { transmute::<_, usize>(ptr) }; + // This test exists even though the compiler lints against it + // to test that clippy's transmute lints do not trigger on this. + unsafe { std::mem::transmute::<*const i32, usize>(&42i32) }; + unsafe { std::mem::transmute::<fn(*const P), usize>(issue_12402) }; + let _ = unsafe { std::mem::transmute::<_, usize>(ptr) }; } diff --git a/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.rs b/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.rs index e5fcdef7a1c..d68db3c2deb 100644 --- a/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.rs +++ b/src/tools/clippy/tests/ui/transmutes_expressible_as_ptr_casts.rs @@ -84,8 +84,11 @@ fn issue_10449() { } // Pointers cannot be cast to integers in const contexts +#[allow(ptr_to_integer_transmute_in_consts, reason = "This is tested in the compiler test suite")] const fn issue_12402<P>(ptr: *const P) { - unsafe { transmute::<*const i32, usize>(&42i32) }; - unsafe { transmute::<fn(*const P), usize>(issue_12402) }; - let _ = unsafe { transmute::<_, usize>(ptr) }; + // This test exists even though the compiler lints against it + // to test that clippy's transmute lints do not trigger on this. + unsafe { std::mem::transmute::<*const i32, usize>(&42i32) }; + unsafe { std::mem::transmute::<fn(*const P), usize>(issue_12402) }; + let _ = unsafe { std::mem::transmute::<_, usize>(ptr) }; } diff --git a/src/tools/clippy/tests/ui/unconditional_recursion.rs b/src/tools/clippy/tests/ui/unconditional_recursion.rs index a51fc567f50..b8476a7088a 100644 --- a/src/tools/clippy/tests/ui/unconditional_recursion.rs +++ b/src/tools/clippy/tests/ui/unconditional_recursion.rs @@ -4,7 +4,8 @@ #![allow( clippy::partialeq_ne_impl, clippy::default_constructed_unit_structs, - clippy::only_used_in_recursion + clippy::only_used_in_recursion, + clippy::needless_lifetimes )] enum Foo { diff --git a/src/tools/clippy/tests/ui/unconditional_recursion.stderr b/src/tools/clippy/tests/ui/unconditional_recursion.stderr index 03c27bd8ed8..6a0078ee090 100644 --- a/src/tools/clippy/tests/ui/unconditional_recursion.stderr +++ b/src/tools/clippy/tests/ui/unconditional_recursion.stderr @@ -1,5 +1,5 @@ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:46:5 + --> tests/ui/unconditional_recursion.rs:47:5 | LL | fn ne(&self, other: &Self) -> bool { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing @@ -12,7 +12,7 @@ LL | self.ne(other) = help: to override `-D warnings` add `#[allow(unconditional_recursion)]` error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:50:5 + --> tests/ui/unconditional_recursion.rs:51:5 | LL | fn eq(&self, other: &Self) -> bool { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing @@ -23,7 +23,7 @@ LL | self.eq(other) = help: a `loop` may express intention better if this is on purpose error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:215:5 + --> tests/ui/unconditional_recursion.rs:216:5 | LL | fn to_string(&self) -> String { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing @@ -34,7 +34,7 @@ LL | self.to_string() = help: a `loop` may express intention better if this is on purpose error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:225:5 + --> tests/ui/unconditional_recursion.rs:226:5 | LL | fn to_string(&self) -> String { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing @@ -45,7 +45,7 @@ LL | x.to_string() = help: a `loop` may express intention better if this is on purpose error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:236:5 + --> tests/ui/unconditional_recursion.rs:237:5 | LL | fn to_string(&self) -> String { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing @@ -56,7 +56,7 @@ LL | (self as &Self).to_string() = help: a `loop` may express intention better if this is on purpose error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:16:5 + --> tests/ui/unconditional_recursion.rs:17:5 | LL | / fn ne(&self, other: &Self) -> bool { LL | | @@ -65,7 +65,7 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:18:9 + --> tests/ui/unconditional_recursion.rs:19:9 | LL | self != other | ^^^^^^^^^^^^^ @@ -73,7 +73,7 @@ LL | self != other = help: to override `-D warnings` add `#[allow(clippy::unconditional_recursion)]` error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:20:5 + --> tests/ui/unconditional_recursion.rs:21:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -82,13 +82,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:22:9 + --> tests/ui/unconditional_recursion.rs:23:9 | LL | self == other | ^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:32:5 + --> tests/ui/unconditional_recursion.rs:33:5 | LL | / fn ne(&self, other: &Self) -> bool { LL | | self != &Foo2::B // no error here @@ -96,13 +96,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:33:9 + --> tests/ui/unconditional_recursion.rs:34:9 | LL | self != &Foo2::B // no error here | ^^^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:35:5 + --> tests/ui/unconditional_recursion.rs:36:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | self == &Foo2::B // no error here @@ -110,13 +110,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:36:9 + --> tests/ui/unconditional_recursion.rs:37:9 | LL | self == &Foo2::B // no error here | ^^^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:46:5 + --> tests/ui/unconditional_recursion.rs:47:5 | LL | / fn ne(&self, other: &Self) -> bool { LL | | @@ -125,13 +125,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:48:9 + --> tests/ui/unconditional_recursion.rs:49:9 | LL | self.ne(other) | ^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:50:5 + --> tests/ui/unconditional_recursion.rs:51:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -140,13 +140,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:52:9 + --> tests/ui/unconditional_recursion.rs:53:9 | LL | self.eq(other) | ^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:94:5 + --> tests/ui/unconditional_recursion.rs:95:5 | LL | / fn ne(&self, other: &Self) -> bool { LL | | @@ -155,13 +155,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:96:9 + --> tests/ui/unconditional_recursion.rs:97:9 | LL | other != self | ^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:98:5 + --> tests/ui/unconditional_recursion.rs:99:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -170,13 +170,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:100:9 + --> tests/ui/unconditional_recursion.rs:101:9 | LL | other == self | ^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:108:5 + --> tests/ui/unconditional_recursion.rs:109:5 | LL | / fn ne(&self, other: &Self) -> bool { LL | | @@ -185,13 +185,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:110:9 + --> tests/ui/unconditional_recursion.rs:111:9 | LL | other != other | ^^^^^^^^^^^^^^ error: equal expressions as operands to `!=` - --> tests/ui/unconditional_recursion.rs:110:9 + --> tests/ui/unconditional_recursion.rs:111:9 | LL | other != other | ^^^^^^^^^^^^^^ @@ -199,7 +199,7 @@ LL | other != other = note: `#[deny(clippy::eq_op)]` on by default error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:112:5 + --> tests/ui/unconditional_recursion.rs:113:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -208,19 +208,19 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:114:9 + --> tests/ui/unconditional_recursion.rs:115:9 | LL | other == other | ^^^^^^^^^^^^^^ error: equal expressions as operands to `==` - --> tests/ui/unconditional_recursion.rs:114:9 + --> tests/ui/unconditional_recursion.rs:115:9 | LL | other == other | ^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:121:5 + --> tests/ui/unconditional_recursion.rs:122:5 | LL | / fn ne(&self, _other: &Self) -> bool { LL | | @@ -229,19 +229,19 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:123:9 + --> tests/ui/unconditional_recursion.rs:124:9 | LL | self != self | ^^^^^^^^^^^^ error: equal expressions as operands to `!=` - --> tests/ui/unconditional_recursion.rs:123:9 + --> tests/ui/unconditional_recursion.rs:124:9 | LL | self != self | ^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:125:5 + --> tests/ui/unconditional_recursion.rs:126:5 | LL | / fn eq(&self, _other: &Self) -> bool { LL | | @@ -250,19 +250,19 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:127:9 + --> tests/ui/unconditional_recursion.rs:128:9 | LL | self == self | ^^^^^^^^^^^^ error: equal expressions as operands to `==` - --> tests/ui/unconditional_recursion.rs:127:9 + --> tests/ui/unconditional_recursion.rs:128:9 | LL | self == self | ^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:153:13 + --> tests/ui/unconditional_recursion.rs:154:13 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -274,7 +274,7 @@ LL | impl_partial_eq!(S5); | -------------------- in this macro invocation | note: recursive call site - --> tests/ui/unconditional_recursion.rs:155:17 + --> tests/ui/unconditional_recursion.rs:156:17 | LL | self == other | ^^^^^^^^^^^^^ @@ -284,7 +284,7 @@ LL | impl_partial_eq!(S5); = note: this error originates in the macro `impl_partial_eq` (in Nightly builds, run with -Z macro-backtrace for more info) error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:182:5 + --> tests/ui/unconditional_recursion.rs:183:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -295,13 +295,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:186:9 + --> tests/ui/unconditional_recursion.rs:187:9 | LL | mine == theirs | ^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:251:5 + --> tests/ui/unconditional_recursion.rs:252:5 | LL | / fn new() -> Self { LL | | @@ -310,13 +310,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:253:9 + --> tests/ui/unconditional_recursion.rs:254:9 | LL | Self::default() | ^^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:290:5 + --> tests/ui/unconditional_recursion.rs:291:5 | LL | / fn eq(&self, other: &Self) -> bool { LL | | @@ -327,13 +327,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:294:9 + --> tests/ui/unconditional_recursion.rs:295:9 | LL | mine.eq(theirs) | ^^^^^^^^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:361:5 + --> tests/ui/unconditional_recursion.rs:362:5 | LL | / fn from(f: BadFromTy1<'a>) -> Self { LL | | f.into() @@ -341,13 +341,13 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:362:9 + --> tests/ui/unconditional_recursion.rs:363:9 | LL | f.into() | ^^^^^^^^ error: function cannot return without recursing - --> tests/ui/unconditional_recursion.rs:370:5 + --> tests/ui/unconditional_recursion.rs:371:5 | LL | / fn from(f: BadFromTy2<'a>) -> Self { LL | | Into::into(f) @@ -355,7 +355,7 @@ LL | | } | |_____^ | note: recursive call site - --> tests/ui/unconditional_recursion.rs:371:9 + --> tests/ui/unconditional_recursion.rs:372:9 | LL | Into::into(f) | ^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/uninit_vec.rs b/src/tools/clippy/tests/ui/uninit_vec.rs index 0cc77a8775d..464f88140bd 100644 --- a/src/tools/clippy/tests/ui/uninit_vec.rs +++ b/src/tools/clippy/tests/ui/uninit_vec.rs @@ -150,4 +150,36 @@ fn main() { vec.set_len(10); } } + + fn nested_union<T>() { + let mut vec: Vec<UnsafeCell<MaybeUninit<T>>> = Vec::with_capacity(1); + unsafe { + vec.set_len(1); + } + } + + struct Recursive<T>(*const Recursive<T>, MaybeUninit<T>); + fn recursive_union<T>() { + // Make sure we don't stack overflow on recursive types. + // The pointer acts as the base case because it can't be uninit regardless of its pointee. + + let mut vec: Vec<Recursive<T>> = Vec::with_capacity(1); + //~^ uninit_vec + unsafe { + vec.set_len(1); + } + } + + #[repr(u8)] + enum Enum<T> { + Variant(T), + } + fn union_in_enum<T>() { + // Enums can have a discriminant that can't be uninit, so this should still warn + let mut vec: Vec<Enum<T>> = Vec::with_capacity(1); + //~^ uninit_vec + unsafe { + vec.set_len(1); + } + } } diff --git a/src/tools/clippy/tests/ui/uninit_vec.stderr b/src/tools/clippy/tests/ui/uninit_vec.stderr index e8b77d653f0..e7c81cf792f 100644 --- a/src/tools/clippy/tests/ui/uninit_vec.stderr +++ b/src/tools/clippy/tests/ui/uninit_vec.stderr @@ -125,5 +125,27 @@ LL | vec.set_len(10); | = help: initialize the buffer or wrap the content in `MaybeUninit` -error: aborting due to 12 previous errors +error: calling `set_len()` immediately after reserving a buffer creates uninitialized values + --> tests/ui/uninit_vec.rs:166:9 + | +LL | let mut vec: Vec<Recursive<T>> = Vec::with_capacity(1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +... +LL | vec.set_len(1); + | ^^^^^^^^^^^^^^ + | + = help: initialize the buffer or wrap the content in `MaybeUninit` + +error: calling `set_len()` immediately after reserving a buffer creates uninitialized values + --> tests/ui/uninit_vec.rs:179:9 + | +LL | let mut vec: Vec<Enum<T>> = Vec::with_capacity(1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +... +LL | vec.set_len(1); + | ^^^^^^^^^^^^^^ + | + = help: initialize the buffer or wrap the content in `MaybeUninit` + +error: aborting due to 14 previous errors diff --git a/src/tools/clippy/tests/ui/unnecessary_first_then_check.fixed b/src/tools/clippy/tests/ui/unnecessary_first_then_check.fixed new file mode 100644 index 00000000000..7202e1bbd17 --- /dev/null +++ b/src/tools/clippy/tests/ui/unnecessary_first_then_check.fixed @@ -0,0 +1,22 @@ +#![warn(clippy::unnecessary_first_then_check)] +#![allow(clippy::useless_vec, clippy::const_is_empty)] + +fn main() { + let s = [1, 2, 3]; + let _: bool = !s.is_empty(); + let _: bool = s.is_empty(); + + let v = vec![1, 2, 3]; + let _: bool = !v.is_empty(); + + let n = [[1, 2, 3], [4, 5, 6]]; + let _: bool = !n[0].is_empty(); + let _: bool = n[0].is_empty(); + + struct Foo { + bar: &'static [i32], + } + let f = [Foo { bar: &[] }]; + let _: bool = !f[0].bar.is_empty(); + let _: bool = f[0].bar.is_empty(); +} diff --git a/src/tools/clippy/tests/ui/unnecessary_first_then_check.rs b/src/tools/clippy/tests/ui/unnecessary_first_then_check.rs new file mode 100644 index 00000000000..762b9599928 --- /dev/null +++ b/src/tools/clippy/tests/ui/unnecessary_first_then_check.rs @@ -0,0 +1,22 @@ +#![warn(clippy::unnecessary_first_then_check)] +#![allow(clippy::useless_vec, clippy::const_is_empty)] + +fn main() { + let s = [1, 2, 3]; + let _: bool = s.first().is_some(); + let _: bool = s.first().is_none(); + + let v = vec![1, 2, 3]; + let _: bool = v.first().is_some(); + + let n = [[1, 2, 3], [4, 5, 6]]; + let _: bool = n[0].first().is_some(); + let _: bool = n[0].first().is_none(); + + struct Foo { + bar: &'static [i32], + } + let f = [Foo { bar: &[] }]; + let _: bool = f[0].bar.first().is_some(); + let _: bool = f[0].bar.first().is_none(); +} diff --git a/src/tools/clippy/tests/ui/unnecessary_first_then_check.stderr b/src/tools/clippy/tests/ui/unnecessary_first_then_check.stderr new file mode 100644 index 00000000000..bbaf7e68eda --- /dev/null +++ b/src/tools/clippy/tests/ui/unnecessary_first_then_check.stderr @@ -0,0 +1,47 @@ +error: unnecessary use of `first().is_some()` to check if slice is not empty + --> tests/ui/unnecessary_first_then_check.rs:6:19 + | +LL | let _: bool = s.first().is_some(); + | ^^^^^^^^^^^^^^^^^^^ help: replace this with: `!s.is_empty()` + | + = note: `-D clippy::unnecessary-first-then-check` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::unnecessary_first_then_check)]` + +error: unnecessary use of `first().is_none()` to check if slice is empty + --> tests/ui/unnecessary_first_then_check.rs:7:21 + | +LL | let _: bool = s.first().is_none(); + | ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()` + +error: unnecessary use of `first().is_some()` to check if slice is not empty + --> tests/ui/unnecessary_first_then_check.rs:10:19 + | +LL | let _: bool = v.first().is_some(); + | ^^^^^^^^^^^^^^^^^^^ help: replace this with: `!v.is_empty()` + +error: unnecessary use of `first().is_some()` to check if slice is not empty + --> tests/ui/unnecessary_first_then_check.rs:13:19 + | +LL | let _: bool = n[0].first().is_some(); + | ^^^^^^^^^^^^^^^^^^^^^^ help: replace this with: `!n[0].is_empty()` + +error: unnecessary use of `first().is_none()` to check if slice is empty + --> tests/ui/unnecessary_first_then_check.rs:14:24 + | +LL | let _: bool = n[0].first().is_none(); + | ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()` + +error: unnecessary use of `first().is_some()` to check if slice is not empty + --> tests/ui/unnecessary_first_then_check.rs:20:19 + | +LL | let _: bool = f[0].bar.first().is_some(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace this with: `!f[0].bar.is_empty()` + +error: unnecessary use of `first().is_none()` to check if slice is empty + --> tests/ui/unnecessary_first_then_check.rs:21:28 + | +LL | let _: bool = f[0].bar.first().is_none(); + | ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()` + +error: aborting due to 7 previous errors + diff --git a/src/tools/clippy/tests/ui/unnecessary_min_or_max.fixed b/src/tools/clippy/tests/ui/unnecessary_min_or_max.fixed index 392f6dd1fee..1f3e131516c 100644 --- a/src/tools/clippy/tests/ui/unnecessary_min_or_max.fixed +++ b/src/tools/clippy/tests/ui/unnecessary_min_or_max.fixed @@ -65,3 +65,32 @@ fn random_u32() -> u32 { // random number generator 0 } + +struct Issue13191 { + min: u16, + max: u16, +} + +impl Issue13191 { + fn new() -> Self { + Self { min: 0, max: 0 } + } + + fn min(mut self, value: u16) -> Self { + self.min = value; + self + } + + fn max(mut self, value: u16) -> Self { + self.max = value; + self + } +} + +fn issue_13191() { + // should not fixed + Issue13191::new().min(0); + + // should not fixed + Issue13191::new().max(0); +} diff --git a/src/tools/clippy/tests/ui/unnecessary_min_or_max.rs b/src/tools/clippy/tests/ui/unnecessary_min_or_max.rs index b03755e6d23..58356b9d49e 100644 --- a/src/tools/clippy/tests/ui/unnecessary_min_or_max.rs +++ b/src/tools/clippy/tests/ui/unnecessary_min_or_max.rs @@ -65,3 +65,32 @@ fn random_u32() -> u32 { // random number generator 0 } + +struct Issue13191 { + min: u16, + max: u16, +} + +impl Issue13191 { + fn new() -> Self { + Self { min: 0, max: 0 } + } + + fn min(mut self, value: u16) -> Self { + self.min = value; + self + } + + fn max(mut self, value: u16) -> Self { + self.max = value; + self + } +} + +fn issue_13191() { + // should not fixed + Issue13191::new().min(0); + + // should not fixed + Issue13191::new().max(0); +} diff --git a/src/tools/clippy/tests/ui/unsafe_removed_from_name.rs b/src/tools/clippy/tests/ui/unsafe_removed_from_name.rs index e0e0ded140f..e9e6c8312f5 100644 --- a/src/tools/clippy/tests/ui/unsafe_removed_from_name.rs +++ b/src/tools/clippy/tests/ui/unsafe_removed_from_name.rs @@ -7,7 +7,7 @@ use std::cell::UnsafeCell as TotallySafeCell; //~| NOTE: `-D clippy::unsafe-removed-from-name` implied by `-D warnings` use std::cell::UnsafeCell as TotallySafeCellAgain; -//~^ ERROR: removed `unsafe` from the name of `UnsafeCell` in use as `TotallySafeCellAgain +//~^ ERROR: removed `unsafe` from the name of `UnsafeCell` in use as `TotallySafeCellAgain` // Shouldn't error use std::cell::RefCell as ProbablyNotUnsafe; diff --git a/src/tools/clippy/tests/ui/unused_async.rs b/src/tools/clippy/tests/ui/unused_async.rs index 7ec8a3adb4c..838d6f0aa97 100644 --- a/src/tools/clippy/tests/ui/unused_async.rs +++ b/src/tools/clippy/tests/ui/unused_async.rs @@ -55,6 +55,22 @@ mod issue9695 { } } +mod issue13466 { + use std::future::Future; + + struct Wrap<F>(F); + impl<F> From<F> for Wrap<F> { + fn from(f: F) -> Self { + Self(f) + } + } + fn takes_fut<F: Fn() -> Fut, Fut: Future>(_: Wrap<F>) {} + async fn unused_async() {} + fn fp() { + takes_fut(unused_async.into()); + } +} + async fn foo() -> i32 { //~^ ERROR: unused `async` for function with no await statements 4 diff --git a/src/tools/clippy/tests/ui/unused_async.stderr b/src/tools/clippy/tests/ui/unused_async.stderr index 337c650e029..4811df63658 100644 --- a/src/tools/clippy/tests/ui/unused_async.stderr +++ b/src/tools/clippy/tests/ui/unused_async.stderr @@ -27,7 +27,7 @@ LL | async fn f3() {} = help: consider removing the `async` from this function error: unused `async` for function with no await statements - --> tests/ui/unused_async.rs:58:1 + --> tests/ui/unused_async.rs:74:1 | LL | / async fn foo() -> i32 { LL | | @@ -38,7 +38,7 @@ LL | | } = help: consider removing the `async` from this function error: unused `async` for function with no await statements - --> tests/ui/unused_async.rs:70:5 + --> tests/ui/unused_async.rs:86:5 | LL | / async fn unused(&self) -> i32 { LL | | diff --git a/src/tools/clippy/tests/ui/unused_format_specs.1.fixed b/src/tools/clippy/tests/ui/unused_format_specs.1.fixed new file mode 100644 index 00000000000..b7d1cce2870 --- /dev/null +++ b/src/tools/clippy/tests/ui/unused_format_specs.1.fixed @@ -0,0 +1,35 @@ +#![warn(clippy::unused_format_specs)] +#![allow(unused)] + +macro_rules! format_args_from_macro { + () => { + format_args!("from macro") + }; +} + +fn main() { + // prints `.`, not ` .` + println!("{:5}.", format!("")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + //~| NOTE: `-D clippy::unused-format-specs` implied by `-D warnings` + //prints `abcde`, not `abc` + println!("{:.3}", format!("abcde")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + println!("{}.", format_args_from_macro!()); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + let args = format_args!(""); + println!("{args}"); + //~^ ERROR: format specifiers have no effect on `format_args!()` +} + +fn should_not_lint() { + println!("{}", format_args!("")); + // Technically the same as `{}`, but the `format_args` docs specifically mention that you can use + // debug formatting so allow it + println!("{:?}", format_args!("")); + + let args = format_args!(""); + println!("{args}"); +} diff --git a/src/tools/clippy/tests/ui/unused_format_specs.2.fixed b/src/tools/clippy/tests/ui/unused_format_specs.2.fixed new file mode 100644 index 00000000000..94bb6b7036b --- /dev/null +++ b/src/tools/clippy/tests/ui/unused_format_specs.2.fixed @@ -0,0 +1,35 @@ +#![warn(clippy::unused_format_specs)] +#![allow(unused)] + +macro_rules! format_args_from_macro { + () => { + format_args!("from macro") + }; +} + +fn main() { + // prints `.`, not ` .` + println!("{}.", format_args!("")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + //~| NOTE: `-D clippy::unused-format-specs` implied by `-D warnings` + //prints `abcde`, not `abc` + println!("{}", format_args!("abcde")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + println!("{}.", format_args_from_macro!()); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + let args = format_args!(""); + println!("{args}"); + //~^ ERROR: format specifiers have no effect on `format_args!()` +} + +fn should_not_lint() { + println!("{}", format_args!("")); + // Technically the same as `{}`, but the `format_args` docs specifically mention that you can use + // debug formatting so allow it + println!("{:?}", format_args!("")); + + let args = format_args!(""); + println!("{args}"); +} diff --git a/src/tools/clippy/tests/ui/unused_format_specs_unfixable.rs b/src/tools/clippy/tests/ui/unused_format_specs.rs index be991935366..2c85e371149 100644 --- a/src/tools/clippy/tests/ui/unused_format_specs_unfixable.rs +++ b/src/tools/clippy/tests/ui/unused_format_specs.rs @@ -1,6 +1,6 @@ #![warn(clippy::unused_format_specs)] #![allow(unused)] -//@no-rustfix + macro_rules! format_args_from_macro { () => { format_args!("from macro") diff --git a/src/tools/clippy/tests/ui/unused_format_specs_unfixable.stderr b/src/tools/clippy/tests/ui/unused_format_specs.stderr index d3b334c6092..2b5c81c63d6 100644 --- a/src/tools/clippy/tests/ui/unused_format_specs_unfixable.stderr +++ b/src/tools/clippy/tests/ui/unused_format_specs.stderr @@ -1,5 +1,5 @@ error: format specifiers have no effect on `format_args!()` - --> tests/ui/unused_format_specs_unfixable.rs:12:15 + --> tests/ui/unused_format_specs.rs:12:15 | LL | println!("{:5}.", format_args!("")); | ^^^^ @@ -17,7 +17,7 @@ LL + println!("{}.", format_args!("")); | error: format specifiers have no effect on `format_args!()` - --> tests/ui/unused_format_specs_unfixable.rs:16:15 + --> tests/ui/unused_format_specs.rs:16:15 | LL | println!("{:.3}", format_args!("abcde")); | ^^^^^ @@ -33,7 +33,7 @@ LL + println!("{}", format_args!("abcde")); | error: format specifiers have no effect on `format_args!()` - --> tests/ui/unused_format_specs_unfixable.rs:19:15 + --> tests/ui/unused_format_specs.rs:19:15 | LL | println!("{:5}.", format_args_from_macro!()); | ^^^^ @@ -46,7 +46,7 @@ LL + println!("{}.", format_args_from_macro!()); | error: format specifiers have no effect on `format_args!()` - --> tests/ui/unused_format_specs_unfixable.rs:23:15 + --> tests/ui/unused_format_specs.rs:23:15 | LL | println!("{args:5}"); | ^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/unused_trait_names.fixed b/src/tools/clippy/tests/ui/unused_trait_names.fixed new file mode 100644 index 00000000000..7dfd0db65aa --- /dev/null +++ b/src/tools/clippy/tests/ui/unused_trait_names.fixed @@ -0,0 +1,286 @@ +//@aux-build:proc_macros.rs + +#![allow(unused)] +#![warn(clippy::unused_trait_names)] +#![feature(decl_macro)] + +extern crate proc_macros; + +fn main() {} + +fn bad() { + use std::any::Any as _; + + println!("{:?}", "foo".type_id()); +} + +fn good() { + use std::any::Any as _; + + println!("{:?}", "foo".type_id()); +} + +fn used_good() { + use std::any::Any; + + println!("{:?}", Any::type_id("foo")); + println!("{:?}", "foo".type_id()); +} + +fn multi_bad() { + use std::any::{self, Any as _, TypeId}; + + println!("{:?}", "foo".type_id()); +} + +fn multi_good() { + use std::any::{self, Any as _, TypeId}; + + println!("{:?}", "foo".type_id()); +} + +fn renamed_bad() { + use std::any::Any as _; + + println!("{:?}", "foo".type_id()); +} + +fn multi_renamed_bad() { + use std::any::{Any as _, TypeId as MyTypeId}; + + println!("{:?}", "foo".type_id()); +} + +mod pub_good { + pub use std::any::Any; + + fn foo() { + println!("{:?}", "foo".type_id()); + } +} + +mod used_mod_good { + use std::any::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } +} + +mod mod_import_bad { + fn mod_import_bad() { + use std::any::Any as _; + + println!("{:?}", "foo".type_id()); + } +} + +mod nested_mod_used_good1 { + use std::any::Any; + + mod foo { + fn foo() { + super::Any::type_id("foo"); + } + } +} + +mod nested_mod_used_good2 { + use std::any::Any; + + mod foo { + use super::Any; + + fn foo() { + Any::type_id("foo"); + } + } +} + +mod nested_mod_used_good3 { + use std::any::Any; + + mod foo { + use crate::nested_mod_used_good3::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } + } +} + +mod nested_mod_used_bad { + use std::any::Any as _; + + fn bar() { + println!("{:?}", "foo".type_id()); + } + + mod foo { + use std::any::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } + } +} + +// More complex example where `use std::any::Any;` should be anonymised but `use std::any::Any as +// MyAny;` should not as it is used by a sub module. Even though if you removed `use std::any::Any;` +// the code would still compile. +mod nested_mod_used_bad1 { + use std::any::Any as _; + + use std::any::Any as MyAny; + + fn baz() { + println!("{:?}", "baz".type_id()); + } + + mod foo { + use crate::nested_mod_used_bad1::MyAny; + + fn foo() { + println!("{:?}", MyAny::type_id("foo")); + } + } +} + +// Example of nested import with an unused import to try and trick it +mod nested_mod_used_good5 { + use std::any::Any; + + mod foo { + use std::any::Any; + + fn baz() { + println!("{:?}", "baz".type_id()); + } + + mod bar { + use crate::nested_mod_used_good5::foo::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } + } + } +} + +mod simple_trait { + pub trait MyTrait { + fn do_things(&self); + } + + pub struct MyStruct; + + impl MyTrait for MyStruct { + fn do_things(&self) {} + } +} + +// Underscore imports were stabilized in 1.33 +#[clippy::msrv = "1.32"] +fn msrv_1_32() { + use simple_trait::{MyStruct, MyTrait}; + MyStruct.do_things(); +} + +#[clippy::msrv = "1.33"] +fn msrv_1_33() { + use simple_trait::{MyStruct, MyTrait as _}; + MyStruct.do_things(); +} + +mod lint_inside_macro_expansion_bad { + macro_rules! foo { + () => { + use std::any::Any as _; + fn bar() { + "bar".type_id(); + } + }; + } + + foo!(); +} + +mod macro_and_trait_same_name { + pub macro Foo() {} + pub trait Foo { + fn bar(&self); + } + impl Foo for () { + fn bar(&self) {} + } +} + +fn call_macro_and_trait_good() { + // importing trait and macro but only using macro by path won't allow us to change this to + // `use macro_and_trait_same_name::Foo as _;` + use macro_and_trait_same_name::Foo; + Foo!(); + ().bar(); +} + +proc_macros::external!( + fn ignore_inside_external_proc_macro() { + use std::any::Any; + "foo".type_id(); + } +); + +proc_macros::with_span!( + span + + fn ignore_inside_with_span_proc_macro() { + use std::any::Any; + "foo".type_id(); + } +); + +// This should warn the import is unused but should not trigger unused_trait_names +#[warn(unused)] +mod unused_import { + +} + +#[allow(clippy::unused_trait_names)] +fn allow_lint_fn() { + use std::any::Any; + + "foo".type_id(); +} + +#[allow(clippy::unused_trait_names)] +mod allow_lint_mod { + use std::any::Any; + + fn foo() { + "foo".type_id(); + } +} + +mod allow_lint_import { + #[allow(clippy::unused_trait_names)] + use std::any::Any; + + fn foo() { + "foo".type_id(); + } +} + +// Limitation: Suggests `use std::any::Any as _::{self};` which looks weird +// fn use_trait_self_good() { +// use std::any::Any::{self}; +// "foo".type_id(); +// } + +// Limitation: Suggests `use std::any::{Any as _, Any as _};` +// mod repeated_renamed { +// use std::any::{Any, Any as MyAny}; + +// fn foo() { +// "foo".type_id(); +// } +// } diff --git a/src/tools/clippy/tests/ui/unused_trait_names.rs b/src/tools/clippy/tests/ui/unused_trait_names.rs new file mode 100644 index 00000000000..ce44eedbc79 --- /dev/null +++ b/src/tools/clippy/tests/ui/unused_trait_names.rs @@ -0,0 +1,286 @@ +//@aux-build:proc_macros.rs + +#![allow(unused)] +#![warn(clippy::unused_trait_names)] +#![feature(decl_macro)] + +extern crate proc_macros; + +fn main() {} + +fn bad() { + use std::any::Any; + + println!("{:?}", "foo".type_id()); +} + +fn good() { + use std::any::Any as _; + + println!("{:?}", "foo".type_id()); +} + +fn used_good() { + use std::any::Any; + + println!("{:?}", Any::type_id("foo")); + println!("{:?}", "foo".type_id()); +} + +fn multi_bad() { + use std::any::{self, Any, TypeId}; + + println!("{:?}", "foo".type_id()); +} + +fn multi_good() { + use std::any::{self, Any as _, TypeId}; + + println!("{:?}", "foo".type_id()); +} + +fn renamed_bad() { + use std::any::Any as MyAny; + + println!("{:?}", "foo".type_id()); +} + +fn multi_renamed_bad() { + use std::any::{Any as MyAny, TypeId as MyTypeId}; + + println!("{:?}", "foo".type_id()); +} + +mod pub_good { + pub use std::any::Any; + + fn foo() { + println!("{:?}", "foo".type_id()); + } +} + +mod used_mod_good { + use std::any::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } +} + +mod mod_import_bad { + fn mod_import_bad() { + use std::any::Any; + + println!("{:?}", "foo".type_id()); + } +} + +mod nested_mod_used_good1 { + use std::any::Any; + + mod foo { + fn foo() { + super::Any::type_id("foo"); + } + } +} + +mod nested_mod_used_good2 { + use std::any::Any; + + mod foo { + use super::Any; + + fn foo() { + Any::type_id("foo"); + } + } +} + +mod nested_mod_used_good3 { + use std::any::Any; + + mod foo { + use crate::nested_mod_used_good3::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } + } +} + +mod nested_mod_used_bad { + use std::any::Any; + + fn bar() { + println!("{:?}", "foo".type_id()); + } + + mod foo { + use std::any::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } + } +} + +// More complex example where `use std::any::Any;` should be anonymised but `use std::any::Any as +// MyAny;` should not as it is used by a sub module. Even though if you removed `use std::any::Any;` +// the code would still compile. +mod nested_mod_used_bad1 { + use std::any::Any; + + use std::any::Any as MyAny; + + fn baz() { + println!("{:?}", "baz".type_id()); + } + + mod foo { + use crate::nested_mod_used_bad1::MyAny; + + fn foo() { + println!("{:?}", MyAny::type_id("foo")); + } + } +} + +// Example of nested import with an unused import to try and trick it +mod nested_mod_used_good5 { + use std::any::Any; + + mod foo { + use std::any::Any; + + fn baz() { + println!("{:?}", "baz".type_id()); + } + + mod bar { + use crate::nested_mod_used_good5::foo::Any; + + fn foo() { + println!("{:?}", Any::type_id("foo")); + } + } + } +} + +mod simple_trait { + pub trait MyTrait { + fn do_things(&self); + } + + pub struct MyStruct; + + impl MyTrait for MyStruct { + fn do_things(&self) {} + } +} + +// Underscore imports were stabilized in 1.33 +#[clippy::msrv = "1.32"] +fn msrv_1_32() { + use simple_trait::{MyStruct, MyTrait}; + MyStruct.do_things(); +} + +#[clippy::msrv = "1.33"] +fn msrv_1_33() { + use simple_trait::{MyStruct, MyTrait}; + MyStruct.do_things(); +} + +mod lint_inside_macro_expansion_bad { + macro_rules! foo { + () => { + use std::any::Any; + fn bar() { + "bar".type_id(); + } + }; + } + + foo!(); +} + +mod macro_and_trait_same_name { + pub macro Foo() {} + pub trait Foo { + fn bar(&self); + } + impl Foo for () { + fn bar(&self) {} + } +} + +fn call_macro_and_trait_good() { + // importing trait and macro but only using macro by path won't allow us to change this to + // `use macro_and_trait_same_name::Foo as _;` + use macro_and_trait_same_name::Foo; + Foo!(); + ().bar(); +} + +proc_macros::external!( + fn ignore_inside_external_proc_macro() { + use std::any::Any; + "foo".type_id(); + } +); + +proc_macros::with_span!( + span + + fn ignore_inside_with_span_proc_macro() { + use std::any::Any; + "foo".type_id(); + } +); + +// This should warn the import is unused but should not trigger unused_trait_names +#[warn(unused)] +mod unused_import { + use std::any::Any; +} + +#[allow(clippy::unused_trait_names)] +fn allow_lint_fn() { + use std::any::Any; + + "foo".type_id(); +} + +#[allow(clippy::unused_trait_names)] +mod allow_lint_mod { + use std::any::Any; + + fn foo() { + "foo".type_id(); + } +} + +mod allow_lint_import { + #[allow(clippy::unused_trait_names)] + use std::any::Any; + + fn foo() { + "foo".type_id(); + } +} + +// Limitation: Suggests `use std::any::Any as _::{self};` which looks weird +// fn use_trait_self_good() { +// use std::any::Any::{self}; +// "foo".type_id(); +// } + +// Limitation: Suggests `use std::any::{Any as _, Any as _};` +// mod repeated_renamed { +// use std::any::{Any, Any as MyAny}; + +// fn foo() { +// "foo".type_id(); +// } +// } diff --git a/src/tools/clippy/tests/ui/unused_trait_names.stderr b/src/tools/clippy/tests/ui/unused_trait_names.stderr new file mode 100644 index 00000000000..f59d8f58a17 --- /dev/null +++ b/src/tools/clippy/tests/ui/unused_trait_names.stderr @@ -0,0 +1,73 @@ +error: unused import: `std::any::Any` + --> tests/ui/unused_trait_names.rs:245:9 + | +LL | use std::any::Any; + | ^^^^^^^^^^^^^ + | + = note: `-D unused-imports` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(unused_imports)]` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:12:19 + | +LL | use std::any::Any; + | ^^^ help: use: `Any as _` + | + = note: `-D clippy::unused-trait-names` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::unused_trait_names)]` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:31:26 + | +LL | use std::any::{self, Any, TypeId}; + | ^^^ help: use: `Any as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:43:19 + | +LL | use std::any::Any as MyAny; + | ^^^^^^^^^^^^ help: use: `Any as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:49:20 + | +LL | use std::any::{Any as MyAny, TypeId as MyTypeId}; + | ^^^^^^^^^^^^ help: use: `Any as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:72:23 + | +LL | use std::any::Any; + | ^^^ help: use: `Any as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:113:19 + | +LL | use std::any::Any; + | ^^^ help: use: `Any as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:132:19 + | +LL | use std::any::Any; + | ^^^ help: use: `Any as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:191:34 + | +LL | use simple_trait::{MyStruct, MyTrait}; + | ^^^^^^^ help: use: `MyTrait as _` + +error: importing trait that is only used anonymously + --> tests/ui/unused_trait_names.rs:198:27 + | +LL | use std::any::Any; + | ^^^ help: use: `Any as _` +... +LL | foo!(); + | ------ in this macro invocation + | + = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to 10 previous errors + diff --git a/src/tools/clippy/tests/ui/used_underscore_binding.stderr b/src/tools/clippy/tests/ui/used_underscore_binding.stderr index 556e1792b3e..f9e8013d3ad 100644 --- a/src/tools/clippy/tests/ui/used_underscore_binding.stderr +++ b/src/tools/clippy/tests/ui/used_underscore_binding.stderr @@ -1,10 +1,10 @@ -error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used +error: used underscore-prefixed binding --> tests/ui/used_underscore_binding.rs:23:5 | LL | _foo + 1 | ^^^^ | -note: `_foo` is defined here +note: binding is defined here --> tests/ui/used_underscore_binding.rs:22:22 | LL | fn prefix_underscore(_foo: u32) -> u32 { @@ -12,61 +12,61 @@ LL | fn prefix_underscore(_foo: u32) -> u32 { = note: `-D clippy::used-underscore-binding` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::used_underscore_binding)]` -error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used +error: used underscore-prefixed binding --> tests/ui/used_underscore_binding.rs:28:20 | LL | println!("{}", _foo); | ^^^^ | -note: `_foo` is defined here +note: binding is defined here --> tests/ui/used_underscore_binding.rs:27:24 | LL | fn in_macro_or_desugar(_foo: u32) { | ^^^^ -error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used +error: used underscore-prefixed binding --> tests/ui/used_underscore_binding.rs:29:16 | LL | assert_eq!(_foo, _foo); | ^^^^ | -note: `_foo` is defined here +note: binding is defined here --> tests/ui/used_underscore_binding.rs:27:24 | LL | fn in_macro_or_desugar(_foo: u32) { | ^^^^ -error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used +error: used underscore-prefixed binding --> tests/ui/used_underscore_binding.rs:29:22 | LL | assert_eq!(_foo, _foo); | ^^^^ | -note: `_foo` is defined here +note: binding is defined here --> tests/ui/used_underscore_binding.rs:27:24 | LL | fn in_macro_or_desugar(_foo: u32) { | ^^^^ -error: used binding `_underscore_field` which is prefixed with an underscore. A leading underscore signals that a binding will not be used +error: used underscore-prefixed binding --> tests/ui/used_underscore_binding.rs:42:5 | LL | s._underscore_field += 1; | ^^^^^^^^^^^^^^^^^^^ | -note: `_underscore_field` is defined here +note: binding is defined here --> tests/ui/used_underscore_binding.rs:36:5 | LL | _underscore_field: u32, | ^^^^^^^^^^^^^^^^^^^^^^ -error: used binding `_i` which is prefixed with an underscore. A leading underscore signals that a binding will not be used +error: used underscore-prefixed binding --> tests/ui/used_underscore_binding.rs:103:16 | LL | uses_i(_i); | ^^ | -note: `_i` is defined here +note: binding is defined here --> tests/ui/used_underscore_binding.rs:102:13 | LL | let _i = 5; diff --git a/src/tools/clippy/tests/ui/used_underscore_items.rs b/src/tools/clippy/tests/ui/used_underscore_items.rs new file mode 100644 index 00000000000..223016a5c96 --- /dev/null +++ b/src/tools/clippy/tests/ui/used_underscore_items.rs @@ -0,0 +1,63 @@ +//@aux-build:external_item.rs +#![allow(unused)] +#![warn(clippy::used_underscore_items)] + +extern crate external_item; + +// should not lint macro +macro_rules! macro_wrap_func { + () => { + fn _marco_foo() {} + }; +} + +macro_wrap_func!(); + +struct _FooStruct {} + +impl _FooStruct { + fn _method_call(self) {} +} + +fn _foo1() {} + +fn _foo2() -> i32 { + 0 +} + +mod a { + pub mod b { + pub mod c { + pub fn _foo3() {} + + pub struct _FooStruct2 {} + + impl _FooStruct2 { + pub fn _method_call(self) {} + } + } + } +} + +fn main() { + _foo1(); + let _ = _foo2(); + a::b::c::_foo3(); + let _ = &_FooStruct {}; + let _ = _FooStruct {}; + + let foo_struct = _FooStruct {}; + foo_struct._method_call(); + + let foo_struct2 = a::b::c::_FooStruct2 {}; + foo_struct2._method_call(); +} + +// should not lint exteranl crate. +// user cannot control how others name their items +fn external_item_call() { + let foo_struct3 = external_item::_ExternalStruct {}; + foo_struct3._foo(); + + external_item::_exernal_foo(); +} diff --git a/src/tools/clippy/tests/ui/used_underscore_items.stderr b/src/tools/clippy/tests/ui/used_underscore_items.stderr new file mode 100644 index 00000000000..93ac3a6fec6 --- /dev/null +++ b/src/tools/clippy/tests/ui/used_underscore_items.stderr @@ -0,0 +1,112 @@ +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:43:5 + | +LL | _foo1(); + | ^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:22:1 + | +LL | fn _foo1() {} + | ^^^^^^^^^^ + = note: `-D clippy::used-underscore-items` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::used_underscore_items)]` + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:44:13 + | +LL | let _ = _foo2(); + | ^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:24:1 + | +LL | fn _foo2() -> i32 { + | ^^^^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:45:5 + | +LL | a::b::c::_foo3(); + | ^^^^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:31:13 + | +LL | pub fn _foo3() {} + | ^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:46:14 + | +LL | let _ = &_FooStruct {}; + | ^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:16:1 + | +LL | struct _FooStruct {} + | ^^^^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:47:13 + | +LL | let _ = _FooStruct {}; + | ^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:16:1 + | +LL | struct _FooStruct {} + | ^^^^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:49:22 + | +LL | let foo_struct = _FooStruct {}; + | ^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:16:1 + | +LL | struct _FooStruct {} + | ^^^^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:50:5 + | +LL | foo_struct._method_call(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:19:5 + | +LL | fn _method_call(self) {} + | ^^^^^^^^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:52:23 + | +LL | let foo_struct2 = a::b::c::_FooStruct2 {}; + | ^^^^^^^^^^^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:33:13 + | +LL | pub struct _FooStruct2 {} + | ^^^^^^^^^^^^^^^^^^^^^^ + +error: used underscore-prefixed item + --> tests/ui/used_underscore_items.rs:53:5 + | +LL | foo_struct2._method_call(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: item is defined here + --> tests/ui/used_underscore_items.rs:36:17 + | +LL | pub fn _method_call(self) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 9 previous errors + diff --git a/src/tools/clippy/tests/ui/useful_asref.rs b/src/tools/clippy/tests/ui/useful_asref.rs index a9f0170a79c..d17db9371ee 100644 --- a/src/tools/clippy/tests/ui/useful_asref.rs +++ b/src/tools/clippy/tests/ui/useful_asref.rs @@ -1,4 +1,5 @@ #![deny(clippy::useless_asref)] +#![allow(clippy::needless_lifetimes)] trait Trait { fn as_ptr(&self); diff --git a/src/tools/clippy/tests/ui/wild_in_or_pats.rs b/src/tools/clippy/tests/ui/wild_in_or_pats.rs index f8bb31b83c4..bc8a1dbee71 100644 --- a/src/tools/clippy/tests/ui/wild_in_or_pats.rs +++ b/src/tools/clippy/tests/ui/wild_in_or_pats.rs @@ -37,4 +37,72 @@ fn main() { dbg!("matched (bar or) wild"); }, }; + + // shouldn't lint + #[non_exhaustive] + pub enum NonExhaustiveEnum<'a> { + Message(&'a str), + Quit(&'a str), + Other, + } + + match NonExhaustiveEnum::Message("Pass") { + NonExhaustiveEnum::Message(_) => dbg!("message"), + NonExhaustiveEnum::Quit(_) => dbg!("quit"), + NonExhaustiveEnum::Other | _ => dbg!("wildcard"), + }; + + // should lint + enum ExhaustiveEnum { + Quit, + Write(String), + ChangeColor(i32, i32, i32), + } + + match ExhaustiveEnum::ChangeColor(0, 160, 255) { + ExhaustiveEnum::Write(text) => { + dbg!("Write"); + }, + ExhaustiveEnum::ChangeColor(r, g, b) => { + dbg!("Change the color"); + }, + ExhaustiveEnum::Quit | _ => { + dbg!("Quit or other"); + }, + }; + + // shouldn't lint + #[non_exhaustive] + struct NonExhaustiveStruct { + a: u32, + b: u32, + c: u64, + } + + let b = NonExhaustiveStruct { a: 5, b: 42, c: 342 }; + + match b { + NonExhaustiveStruct { a: 5, b: 42, .. } => {}, + NonExhaustiveStruct { a: 0, b: 0, c: 128 } => {}, + NonExhaustiveStruct { a: 0, b: 0, c: 128, .. } | _ => {}, + } + + // should lint + struct ExhaustiveStruct { + x: i32, + y: i32, + } + + let p = ExhaustiveStruct { x: 0, y: 7 }; + match p { + ExhaustiveStruct { x: 0, y: 0 } => { + dbg!("On the x axis at {x}"); + }, + ExhaustiveStruct { x: 0, y: 1 } => { + dbg!("On the y axis at {y}"); + }, + ExhaustiveStruct { x: 1, y: 1 } | _ => { + dbg!("On neither axis: ({x}, {y})"); + }, + } } diff --git a/src/tools/clippy/tests/ui/wild_in_or_pats.stderr b/src/tools/clippy/tests/ui/wild_in_or_pats.stderr index 06b2415d221..5e409d6dfa6 100644 --- a/src/tools/clippy/tests/ui/wild_in_or_pats.stderr +++ b/src/tools/clippy/tests/ui/wild_in_or_pats.stderr @@ -32,5 +32,21 @@ LL | _ | "bar" => { | = help: consider handling `_` separately -error: aborting due to 4 previous errors +error: wildcard pattern covers any other pattern as it will match anyway + --> tests/ui/wild_in_or_pats.rs:69:9 + | +LL | ExhaustiveEnum::Quit | _ => { + | ^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider handling `_` separately + +error: wildcard pattern covers any other pattern as it will match anyway + --> tests/ui/wild_in_or_pats.rs:104:9 + | +LL | ExhaustiveStruct { x: 1, y: 1 } | _ => { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider handling `_` separately + +error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/zombie_processes.rs b/src/tools/clippy/tests/ui/zombie_processes.rs new file mode 100644 index 00000000000..b41bcce3f7f --- /dev/null +++ b/src/tools/clippy/tests/ui/zombie_processes.rs @@ -0,0 +1,145 @@ +#![warn(clippy::zombie_processes)] +#![allow(clippy::if_same_then_else, clippy::ifs_same_cond)] + +use std::process::{Child, Command}; + +fn main() { + { + // Check that #[expect] works + #[expect(clippy::zombie_processes)] + let mut x = Command::new("").spawn().unwrap(); + } + + { + let mut x = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + x.kill(); + x.id(); + } + { + let mut x = Command::new("").spawn().unwrap(); + x.wait().unwrap(); // OK + } + { + let x = Command::new("").spawn().unwrap(); + x.wait_with_output().unwrap(); // OK + } + { + let mut x = Command::new("").spawn().unwrap(); + x.try_wait().unwrap(); // OK + } + { + let mut x = Command::new("").spawn().unwrap(); + let mut r = &mut x; + r.wait().unwrap(); // OK, not calling `.wait()` directly on `x` but through `r` -> `x` + } + { + let mut x = Command::new("").spawn().unwrap(); + process_child(x); // OK, other function might call `.wait()` so assume it does + } + { + let mut x = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + let v = &x; + // (allow shared refs is fine because one cannot call `.wait()` through that) + } + + // https://github.com/rust-lang/rust-clippy/pull/11476#issuecomment-1718456033 + // Unconditionally exiting the process in various ways (should not lint) + { + let mut x = Command::new("").spawn().unwrap(); + std::process::exit(0); + } + { + let mut x = Command::new("").spawn().unwrap(); + std::process::abort(); // same as above, but abort instead of exit + } + { + let mut x = Command::new("").spawn().unwrap(); + if true { /* nothing */ } + std::process::abort(); // still unconditionally exits + } + + // Conditionally exiting + // It should assume that it might not exit and still lint + { + let mut x = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + if true { + std::process::exit(0); + } + } + { + let mut x = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + if true { + while false {} + // Calling `exit()` after leaving a while loop should still be linted. + std::process::exit(0); + } + } + + { + let mut x = { Command::new("").spawn().unwrap() }; + x.wait().unwrap(); + } + + { + struct S { + c: Child, + } + + let mut s = S { + c: Command::new("").spawn().unwrap(), + }; + s.c.wait().unwrap(); + } + + { + let mut x = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + if true { + return; + } + x.wait().unwrap(); + } + + { + let mut x = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + if true { + x.wait().unwrap(); + } + } + + { + let mut x = Command::new("").spawn().unwrap(); + if true { + x.wait().unwrap(); + } else if true { + x.wait().unwrap(); + } else { + x.wait().unwrap(); + } + } + + { + let mut x = Command::new("").spawn().unwrap(); + if true { + x.wait().unwrap(); + return; + } + x.wait().unwrap(); + } + + { + let mut x = Command::new("").spawn().unwrap(); + std::thread::spawn(move || { + x.wait().unwrap(); + }); + } +} + +fn process_child(c: Child) { + todo!() +} diff --git a/src/tools/clippy/tests/ui/zombie_processes.stderr b/src/tools/clippy/tests/ui/zombie_processes.stderr new file mode 100644 index 00000000000..eec821a4c8f --- /dev/null +++ b/src/tools/clippy/tests/ui/zombie_processes.stderr @@ -0,0 +1,64 @@ +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes.rs:14:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: consider calling `.wait()` + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + = note: `-D clippy::zombie-processes` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::zombie_processes)]` + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes.rs:41:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: consider calling `.wait()` + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes.rs:66:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: consider calling `.wait()` + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes.rs:73:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: consider calling `.wait()` + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes.rs:99:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: consider calling `.wait()` + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes.rs:108:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: consider calling `.wait()` + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: aborting due to 6 previous errors + diff --git a/src/tools/clippy/tests/ui/zombie_processes_fixable.fixed b/src/tools/clippy/tests/ui/zombie_processes_fixable.fixed new file mode 100644 index 00000000000..6045262f519 --- /dev/null +++ b/src/tools/clippy/tests/ui/zombie_processes_fixable.fixed @@ -0,0 +1,26 @@ +#![warn(clippy::zombie_processes)] +#![allow(clippy::needless_return)] + +use std::process::{Child, Command}; + +fn main() { + let _ = Command::new("").spawn().unwrap().wait(); + //~^ ERROR: spawned process is never `wait()`ed on + Command::new("").spawn().unwrap().wait(); + //~^ ERROR: spawned process is never `wait()`ed on + spawn_proc().wait(); + //~^ ERROR: spawned process is never `wait()`ed on + spawn_proc().wait().unwrap(); // OK +} + +fn not_main() { + Command::new("").spawn().unwrap().wait(); +} + +fn spawn_proc() -> Child { + Command::new("").spawn().unwrap() +} + +fn spawn_proc_2() -> Child { + return Command::new("").spawn().unwrap(); +} diff --git a/src/tools/clippy/tests/ui/zombie_processes_fixable.rs b/src/tools/clippy/tests/ui/zombie_processes_fixable.rs new file mode 100644 index 00000000000..e1ecb771641 --- /dev/null +++ b/src/tools/clippy/tests/ui/zombie_processes_fixable.rs @@ -0,0 +1,26 @@ +#![warn(clippy::zombie_processes)] +#![allow(clippy::needless_return)] + +use std::process::{Child, Command}; + +fn main() { + let _ = Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + Command::new("").spawn().unwrap(); + //~^ ERROR: spawned process is never `wait()`ed on + spawn_proc(); + //~^ ERROR: spawned process is never `wait()`ed on + spawn_proc().wait().unwrap(); // OK +} + +fn not_main() { + Command::new("").spawn().unwrap(); +} + +fn spawn_proc() -> Child { + Command::new("").spawn().unwrap() +} + +fn spawn_proc_2() -> Child { + return Command::new("").spawn().unwrap(); +} diff --git a/src/tools/clippy/tests/ui/zombie_processes_fixable.stderr b/src/tools/clippy/tests/ui/zombie_processes_fixable.stderr new file mode 100644 index 00000000000..e1c40472c32 --- /dev/null +++ b/src/tools/clippy/tests/ui/zombie_processes_fixable.stderr @@ -0,0 +1,40 @@ +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes_fixable.rs:7:13 + | +LL | let _ = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try: `.wait()` + | + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + = note: `-D clippy::zombie-processes` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::zombie_processes)]` + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes_fixable.rs:9:5 + | +LL | Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try: `.wait()` + | + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes_fixable.rs:11:5 + | +LL | spawn_proc(); + | ^^^^^^^^^^^^- help: try: `.wait()` + | + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is never `wait()`ed on + --> tests/ui/zombie_processes_fixable.rs:17:5 + | +LL | Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try: `.wait()` + | + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: aborting due to 4 previous errors + diff --git a/src/tools/clippy/triagebot.toml b/src/tools/clippy/triagebot.toml index 99b3560a064..dcf00e4e384 100644 --- a/src/tools/clippy/triagebot.toml +++ b/src/tools/clippy/triagebot.toml @@ -20,7 +20,6 @@ new_pr = true [assign] contributing_url = "https://github.com/rust-lang/rust-clippy/blob/master/CONTRIBUTING.md" users_on_vacation = [ - "flip1995", "matthiaskrgr", "giraffate", ] diff --git a/src/tools/clippy/util/gh-pages/versions.html b/src/tools/clippy/util/gh-pages/versions.html index 31ce8819329..d38fe39a464 100644 --- a/src/tools/clippy/util/gh-pages/versions.html +++ b/src/tools/clippy/util/gh-pages/versions.html @@ -1,4 +1,5 @@ <!DOCTYPE html> +<!-- Expanded by util/versions.py into the HTML file seen at https://rust-lang.github.io/rust-clippy/ --> <html lang="en"> <head> <meta charset="UTF-8"/> @@ -7,26 +8,15 @@ <title>Clippy lints documentation</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap.min.css"/> - <style> - [ng\:cloak], [ng-cloak], [data-ng-cloak], [x-ng-cloak], .ng-cloak, .x-ng-cloak { display: none !important; } - </style> </head> <body> - <div class="container" ng-app="clippy" ng-controller="docVersions"> + <div class="container"> <div class="page-header"> <h1>Clippy lints documentation</h1> </div> - <div ng-cloak> - <div class="alert alert-info" role="alert" ng-if="loading"> - Loading… - </div> - <div class="alert alert-danger" role="alert" ng-if="error"> - Error loading versions!<br/> - You can always try to get <a href="master/index.html">the master branch docs</a>. - </div> - - <article class="panel panel-default" ng-show="data"> + <div> + <article class="panel panel-default"> <div class="panel-heading"> <h3 class="panel-title"> Available versions @@ -34,55 +24,70 @@ </div> <ul class="list-group"> - <a class="list-group-item" ng-repeat="version in data | orderBy:versionOrder:true" - href="./{{version}}/index.html"> - {{version}} - </a> + $list </ul> </article> </div> </div> - <a href="https://github.com/rust-lang/rust-clippy"> - <img style="position: absolute; top: 0; right: 0; border: 0;" src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png"/> - </a> - - - <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.12/angular.min.js"></script> - <script> - angular.module('clippy', []) - .controller('docVersions', function ($scope, $http) { - $scope.loading = true; - - $scope.normalizeVersion = function(v) { - return v.replace(/^rust-/, ''); - }; - - $scope.versionOrder = function(v) { - if (v === 'master') { return Infinity; } - if (v === 'stable') { return Number.MAX_VALUE; } - if (v === 'beta') { return Number.MAX_VALUE - 1; } - if (v === 'pre-1.29.0') { return Number.MIN_VALUE; } - - return $scope.normalizeVersion(v) - .split('.') - .reverse() - .reduce(function(acc, val, index) { - return acc + (val * Math.pow(100, index)); - }, 0); + <a + aria-label="View source on GitHub" + class="github-corner" + href="https://github.com/rust-lang/rust-clippy" + rel="noopener noreferrer" + target="_blank" + > + <svg + width="80" + height="80" + viewBox="0 0 250 250" + style="position: absolute; top: 0; border: 0; right: 0" + aria-hidden="true" + > + <path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z" fill="var(--theme-color)"></path> + <path + d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" + fill="currentColor" + style="transform-origin: 130px 106px" + class="octo-arm" + ></path> + <path + d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" + fill="currentColor" + class="octo-body" + ></path> + </svg> + <style> + .github-corner svg { + fill: black; + color: white; } - - $http.get('./versions.json') - .success(function (data) { - $scope.data = data; - $scope.loading = false; - }) - .error(function (data) { - $scope.error = data; - $scope.loading = false; - }); - }) - ; - </script> + .github-corner:hover .octo-arm { + animation: octocat-wave 560ms ease-in-out; + } + @keyframes octocat-wave { + 0%, + 100% { + transform: rotate(0); + } + 20%, + 60% { + transform: rotate(-25deg); + } + 40%, + 80% { + transform: rotate(10deg); + } + } + @media (max-width: 500px) { + .github-corner:hover .octo-arm { + animation: none; + } + .github-corner .octo-arm { + animation: octocat-wave 560ms ease-in-out; + } + } + </style> + </a> </body> </html> diff --git a/src/tools/clippy/util/versions.py b/src/tools/clippy/util/versions.py index c041fc606a8..fee0d292df1 100755 --- a/src/tools/clippy/util/versions.py +++ b/src/tools/clippy/util/versions.py @@ -1,22 +1,21 @@ #!/usr/bin/env python -import json -import logging as log +from string import Template +import argparse import os import sys -log.basicConfig(level=log.INFO, format="%(levelname)s: %(message)s") - - def key(v): if v == "master": - return float("inf") - if v == "stable": return sys.maxsize - if v == "beta": + if v == "stable": return sys.maxsize - 1 + if v == "beta": + return sys.maxsize - 2 if v == "pre-1.29.0": return -1 + if not v.startswith("rust-"): + return None v = v.replace("rust-", "") @@ -26,26 +25,27 @@ def key(v): return s - def main(): - if len(sys.argv) < 2: - log.error("specify output directory") - return + parser = argparse.ArgumentParser() + parser.add_argument("input", help="path to the versions.html template", type=argparse.FileType("r")) + parser.add_argument("outdir", help="path to write the output HTML") + args = parser.parse_args() - outdir = sys.argv[1] versions = [ dir - for dir in os.listdir(outdir) - if not dir.startswith(".") - and not dir.startswith("v") - and os.path.isdir(os.path.join(outdir, dir)) + for dir in os.listdir(args.outdir) + if key(dir) is not None ] - versions.sort(key=key) + versions.sort(key=key, reverse=True) + links = [f'<a class="list-group-item" href="./{version}/index.html">{version}</a>' for version in versions] - with open(os.path.join(outdir, "versions.json"), "w") as fp: - json.dump(versions, fp, indent=2) - log.info("wrote JSON for great justice") + template = Template(args.input.read()) + html = template.substitute(list="\n".join(links)) + path = os.path.join(args.outdir, "index.html") + with open(path, "w") as out: + out.write(html) + print(f"wrote HTML to {path}") if __name__ == "__main__": main() |