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| author | Philipp Krones <hello@philkrones.com> | 2024-07-11 15:44:03 +0200 |
|---|---|---|
| committer | Philipp Krones <hello@philkrones.com> | 2024-07-11 15:44:03 +0200 |
| commit | 2ed6ed41beebb2aa2ffc91ab0da4c5f70c40366b (patch) | |
| tree | f7ee58daa96b6179271bf0ccf98b5ff00ec17d4d | |
| parent | fdf7ea6b5b1cac83c0f29e681202cf18bf25b01c (diff) | |
| parent | b794b8e08c16517a941dc598bb1483e8e12a8592 (diff) | |
| download | rust-2ed6ed41beebb2aa2ffc91ab0da4c5f70c40366b.tar.gz rust-2ed6ed41beebb2aa2ffc91ab0da4c5f70c40366b.zip | |
Merge commit 'b794b8e08c16517a941dc598bb1483e8e12a8592' into clippy-subtree-update
191 files changed, 4147 insertions, 2494 deletions
diff --git a/src/tools/clippy/.github/workflows/lintcheck.yml b/src/tools/clippy/.github/workflows/lintcheck.yml index 91c98b3a256..f016a770059 100644 --- a/src/tools/clippy/.github/workflows/lintcheck.yml +++ b/src/tools/clippy/.github/workflows/lintcheck.yml @@ -58,7 +58,7 @@ jobs: - name: Run lintcheck if: steps.cache-json.outputs.cache-hit != 'true' - run: ./target/debug/lintcheck --format json + run: ./target/debug/lintcheck --format json --warn-all - name: Upload base JSON uses: actions/upload-artifact@v4 @@ -86,7 +86,7 @@ jobs: run: cargo build --manifest-path=lintcheck/Cargo.toml - name: Run lintcheck - run: ./target/debug/lintcheck --format json + run: ./target/debug/lintcheck --format json --warn-all - name: Upload head JSON uses: actions/upload-artifact@v4 diff --git a/src/tools/clippy/CHANGELOG.md b/src/tools/clippy/CHANGELOG.md index 70ef2c79364..55281f3cbec 100644 --- a/src/tools/clippy/CHANGELOG.md +++ b/src/tools/clippy/CHANGELOG.md @@ -5236,6 +5236,7 @@ Released 2018-09-13 [`boxed_local`]: https://rust-lang.github.io/rust-clippy/master/index.html#boxed_local [`branches_sharing_code`]: https://rust-lang.github.io/rust-clippy/master/index.html#branches_sharing_code [`builtin_type_shadow`]: https://rust-lang.github.io/rust-clippy/master/index.html#builtin_type_shadow +[`byte_char_slices`]: https://rust-lang.github.io/rust-clippy/master/index.html#byte_char_slices [`bytes_count_to_len`]: https://rust-lang.github.io/rust-clippy/master/index.html#bytes_count_to_len [`bytes_nth`]: https://rust-lang.github.io/rust-clippy/master/index.html#bytes_nth [`cargo_common_metadata`]: https://rust-lang.github.io/rust-clippy/master/index.html#cargo_common_metadata @@ -5253,6 +5254,7 @@ Released 2018-09-13 [`cast_sign_loss`]: https://rust-lang.github.io/rust-clippy/master/index.html#cast_sign_loss [`cast_slice_different_sizes`]: https://rust-lang.github.io/rust-clippy/master/index.html#cast_slice_different_sizes [`cast_slice_from_raw_parts`]: https://rust-lang.github.io/rust-clippy/master/index.html#cast_slice_from_raw_parts +[`cfg_not_test`]: https://rust-lang.github.io/rust-clippy/master/index.html#cfg_not_test [`char_lit_as_u8`]: https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8 [`chars_last_cmp`]: https://rust-lang.github.io/rust-clippy/master/index.html#chars_last_cmp [`chars_next_cmp`]: https://rust-lang.github.io/rust-clippy/master/index.html#chars_next_cmp @@ -5539,6 +5541,7 @@ Released 2018-09-13 [`manual_range_patterns`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_patterns [`manual_rem_euclid`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_rem_euclid [`manual_retain`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_retain +[`manual_rotate`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_rotate [`manual_saturating_arithmetic`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_saturating_arithmetic [`manual_slice_size_calculation`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_slice_size_calculation [`manual_split_once`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_split_once @@ -5587,6 +5590,7 @@ Released 2018-09-13 [`missing_assert_message`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_assert_message [`missing_asserts_for_indexing`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_asserts_for_indexing [`missing_const_for_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_const_for_fn +[`missing_const_for_thread_local`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_const_for_thread_local [`missing_docs_in_private_items`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_docs_in_private_items [`missing_enforced_import_renames`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_enforced_import_renames [`missing_errors_doc`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_errors_doc @@ -5701,6 +5705,7 @@ Released 2018-09-13 [`panic`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic [`panic_in_result_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic_in_result_fn [`panic_params`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic_params +[`panicking_overflow_checks`]: https://rust-lang.github.io/rust-clippy/master/index.html#panicking_overflow_checks [`panicking_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#panicking_unwrap [`partial_pub_fields`]: https://rust-lang.github.io/rust-clippy/master/index.html#partial_pub_fields [`partialeq_ne_impl`]: https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl @@ -5797,6 +5802,7 @@ Released 2018-09-13 [`semicolon_outside_block`]: https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_outside_block [`separated_literal_suffix`]: https://rust-lang.github.io/rust-clippy/master/index.html#separated_literal_suffix [`serde_api_misuse`]: https://rust-lang.github.io/rust-clippy/master/index.html#serde_api_misuse +[`set_contains_or_insert`]: https://rust-lang.github.io/rust-clippy/master/index.html#set_contains_or_insert [`shadow_reuse`]: https://rust-lang.github.io/rust-clippy/master/index.html#shadow_reuse [`shadow_same`]: https://rust-lang.github.io/rust-clippy/master/index.html#shadow_same [`shadow_unrelated`]: https://rust-lang.github.io/rust-clippy/master/index.html#shadow_unrelated diff --git a/src/tools/clippy/book/src/lint_configuration.md b/src/tools/clippy/book/src/lint_configuration.md index cfd34c7d2a7..ad29339a84a 100644 --- a/src/tools/clippy/book/src/lint_configuration.md +++ b/src/tools/clippy/book/src/lint_configuration.md @@ -348,6 +348,7 @@ Suppress lints whenever the suggested change would cause breakage for other crat * [`enum_variant_names`](https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names) * [`large_types_passed_by_value`](https://rust-lang.github.io/rust-clippy/master/index.html#large_types_passed_by_value) * [`linkedlist`](https://rust-lang.github.io/rust-clippy/master/index.html#linkedlist) +* [`needless_pass_by_ref_mut`](https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut) * [`option_option`](https://rust-lang.github.io/rust-clippy/master/index.html#option_option) * [`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) @@ -454,7 +455,7 @@ default configuration of Clippy. By default, any configuration will replace the * `doc-valid-idents = ["ClipPy"]` would replace the default list with `["ClipPy"]`. * `doc-valid-idents = ["ClipPy", ".."]` would append `ClipPy` to the default list. -**Default Value:** `["KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "DevOps", "DirectX", "ECMAScript", "GPLv2", "GPLv3", "GitHub", "GitLab", "IPv4", "IPv6", "ClojureScript", "CoffeeScript", "JavaScript", "PureScript", "TypeScript", "WebAssembly", "NaN", "NaNs", "OAuth", "GraphQL", "OCaml", "OpenDNS", "OpenGL", "OpenMP", "OpenSSH", "OpenSSL", "OpenStreetMap", "OpenTelemetry", "WebGL", "WebGL2", "WebGPU", "TensorFlow", "TrueType", "iOS", "macOS", "FreeBSD", "TeX", "LaTeX", "BibTeX", "BibLaTeX", "MinGW", "CamelCase"]` +**Default Value:** `["KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "DevOps", "DirectX", "ECMAScript", "GPLv2", "GPLv3", "GitHub", "GitLab", "IPv4", "IPv6", "ClojureScript", "CoffeeScript", "JavaScript", "PureScript", "TypeScript", "WebAssembly", "NaN", "NaNs", "OAuth", "GraphQL", "OCaml", "OpenDNS", "OpenGL", "OpenMP", "OpenSSH", "OpenSSL", "OpenStreetMap", "OpenTelemetry", "WebGL", "WebGL2", "WebGPU", "WebP", "OpenExr", "YCbCr", "sRGB", "TensorFlow", "TrueType", "iOS", "macOS", "FreeBSD", "TeX", "LaTeX", "BibTeX", "BibLaTeX", "MinGW", "CamelCase"]` --- **Affected lints:** diff --git a/src/tools/clippy/clippy.toml b/src/tools/clippy/clippy.toml index 62ed55beb1f..319b72e8c5d 100644 --- a/src/tools/clippy/clippy.toml +++ b/src/tools/clippy/clippy.toml @@ -1,6 +1,10 @@ avoid-breaking-exported-api = false [[disallowed-methods]] +path = "rustc_lint::context::LintContext::lint" +reason = "this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead" + +[[disallowed-methods]] path = "rustc_lint::context::LintContext::span_lint" reason = "this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead" diff --git a/src/tools/clippy/clippy_config/src/conf.rs b/src/tools/clippy/clippy_config/src/conf.rs index dbab3b106a8..7f53aad6793 100644 --- a/src/tools/clippy/clippy_config/src/conf.rs +++ b/src/tools/clippy/clippy_config/src/conf.rs @@ -31,6 +31,7 @@ const DEFAULT_DOC_VALID_IDENTS: &[&str] = &[ "OCaml", "OpenDNS", "OpenGL", "OpenMP", "OpenSSH", "OpenSSL", "OpenStreetMap", "OpenTelemetry", "WebGL", "WebGL2", "WebGPU", + "WebP", "OpenExr", "YCbCr", "sRGB", "TensorFlow", "TrueType", "iOS", "macOS", "FreeBSD", @@ -262,7 +263,7 @@ define_Conf! { /// arithmetic-side-effects-allowed-unary = ["SomeType", "AnotherType"] /// ``` (arithmetic_side_effects_allowed_unary: FxHashSet<String> = <_>::default()), - /// Lint: ENUM_VARIANT_NAMES, LARGE_TYPES_PASSED_BY_VALUE, TRIVIALLY_COPY_PASS_BY_REF, UNNECESSARY_WRAPS, UNUSED_SELF, UPPER_CASE_ACRONYMS, WRONG_SELF_CONVENTION, BOX_COLLECTION, REDUNDANT_ALLOCATION, RC_BUFFER, VEC_BOX, OPTION_OPTION, LINKEDLIST, RC_MUTEX, UNNECESSARY_BOX_RETURNS, SINGLE_CALL_FN. + /// Lint: ENUM_VARIANT_NAMES, LARGE_TYPES_PASSED_BY_VALUE, TRIVIALLY_COPY_PASS_BY_REF, UNNECESSARY_WRAPS, UNUSED_SELF, UPPER_CASE_ACRONYMS, WRONG_SELF_CONVENTION, BOX_COLLECTION, REDUNDANT_ALLOCATION, RC_BUFFER, VEC_BOX, OPTION_OPTION, LINKEDLIST, RC_MUTEX, UNNECESSARY_BOX_RETURNS, SINGLE_CALL_FN, NEEDLESS_PASS_BY_REF_MUT. /// /// Suppress lints whenever the suggested change would cause breakage for other crates. (avoid_breaking_exported_api: bool = true), diff --git a/src/tools/clippy/clippy_config/src/msrvs.rs b/src/tools/clippy/clippy_config/src/msrvs.rs index a5761d3270c..fc56ac51796 100644 --- a/src/tools/clippy/clippy_config/src/msrvs.rs +++ b/src/tools/clippy/clippy_config/src/msrvs.rs @@ -25,8 +25,8 @@ msrv_aliases! { 1,68,0 { PATH_MAIN_SEPARATOR_STR } 1,65,0 { LET_ELSE, POINTER_CAST_CONSTNESS } 1,63,0 { CLONE_INTO } - 1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE } - 1,59,0 { THREAD_LOCAL_INITIALIZER_CAN_BE_MADE_CONST } + 1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE, CONST_EXTERN_FN } + 1,59,0 { THREAD_LOCAL_CONST_INIT } 1,58,0 { FORMAT_ARGS_CAPTURE, PATTERN_TRAIT_CHAR_ARRAY, CONST_RAW_PTR_DEREF } 1,56,0 { CONST_FN_UNION } 1,55,0 { SEEK_REWIND } diff --git a/src/tools/clippy/clippy_dev/src/new_lint.rs b/src/tools/clippy/clippy_dev/src/new_lint.rs index 2e56eb8ec15..d762e30ef02 100644 --- a/src/tools/clippy/clippy_dev/src/new_lint.rs +++ b/src/tools/clippy/clippy_dev/src/new_lint.rs @@ -273,7 +273,7 @@ fn get_lint_file_contents(lint: &LintData<'_>, enable_msrv: bool) -> String { result.push_str(&if enable_msrv { formatdoc!( r#" - use clippy_utils::msrvs::{{self, Msrv}}; + use clippy_config::msrvs::{{self, Msrv}}; {pass_import} use rustc_lint::{{{context_import}, {pass_type}, LintContext}}; use rustc_session::impl_lint_pass; @@ -399,7 +399,7 @@ fn create_lint_for_ty(lint: &LintData<'_>, enable_msrv: bool, ty: &str) -> io::R let _: fmt::Result = writedoc!( lint_file_contents, r#" - use clippy_utils::msrvs::{{self, Msrv}}; + use clippy_config::msrvs::{{self, Msrv}}; use rustc_lint::{{{context_import}, LintContext}}; use super::{name_upper}; 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 57a5cd8fba8..96e9c949b75 100644 --- a/src/tools/clippy/clippy_lints/src/almost_complete_range.rs +++ b/src/tools/clippy/clippy_lints/src/almost_complete_range.rs @@ -6,7 +6,6 @@ use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::impl_lint_pass; -use rustc_span::Span; declare_clippy_lint! { /// ### What it does @@ -41,61 +40,80 @@ impl AlmostCompleteRange { } impl EarlyLintPass for AlmostCompleteRange { fn check_expr(&mut self, cx: &EarlyContext<'_>, e: &Expr) { - if let ExprKind::Range(Some(start), Some(end), RangeLimits::HalfOpen) = &e.kind { - let ctxt = e.span.ctxt(); - let sugg = if let Some(start) = walk_span_to_context(start.span, ctxt) - && let Some(end) = walk_span_to_context(end.span, ctxt) - && self.msrv.meets(msrvs::RANGE_INCLUSIVE) - { - Some((trim_span(cx.sess().source_map(), start.between(end)), "..=")) - } else { - None - }; - check_range(cx, e.span, start, end, sugg); + if let ExprKind::Range(Some(start), Some(end), RangeLimits::HalfOpen) = &e.kind + && is_incomplete_range(start, end) + && !in_external_macro(cx.sess(), e.span) + { + span_lint_and_then( + cx, + ALMOST_COMPLETE_RANGE, + e.span, + "almost complete ascii range", + |diag| { + let ctxt = e.span.ctxt(); + if let Some(start) = walk_span_to_context(start.span, ctxt) + && let Some(end) = walk_span_to_context(end.span, ctxt) + && self.msrv.meets(msrvs::RANGE_INCLUSIVE) + { + diag.span_suggestion( + trim_span(cx.sess().source_map(), start.between(end)), + "use an inclusive range", + "..=".to_owned(), + Applicability::MaybeIncorrect, + ); + } + }, + ); } } fn check_pat(&mut self, cx: &EarlyContext<'_>, p: &Pat) { if let PatKind::Range(Some(start), Some(end), kind) = &p.kind && matches!(kind.node, RangeEnd::Excluded) + && is_incomplete_range(start, end) + && !in_external_macro(cx.sess(), p.span) { - let sugg = if self.msrv.meets(msrvs::RANGE_INCLUSIVE) { - "..=" - } else { - "..." - }; - check_range(cx, p.span, start, end, Some((kind.span, sugg))); + span_lint_and_then( + cx, + ALMOST_COMPLETE_RANGE, + p.span, + "almost complete ascii range", + |diag| { + diag.span_suggestion( + kind.span, + "use an inclusive range", + if self.msrv.meets(msrvs::RANGE_INCLUSIVE) { + "..=".to_owned() + } else { + "...".to_owned() + }, + Applicability::MaybeIncorrect, + ); + }, + ); } } extract_msrv_attr!(EarlyContext); } -fn check_range(cx: &EarlyContext<'_>, span: Span, start: &Expr, end: &Expr, sugg: Option<(Span, &str)>) { - if let ExprKind::Lit(start_token_lit) = start.peel_parens().kind - && let ExprKind::Lit(end_token_lit) = end.peel_parens().kind - && matches!( - ( - LitKind::from_token_lit(start_token_lit), - LitKind::from_token_lit(end_token_lit), - ), - ( - Ok(LitKind::Byte(b'a') | LitKind::Char('a')), - Ok(LitKind::Byte(b'z') | LitKind::Char('z')) - ) | ( - Ok(LitKind::Byte(b'A') | LitKind::Char('A')), - Ok(LitKind::Byte(b'Z') | LitKind::Char('Z')), - ) | ( - Ok(LitKind::Byte(b'0') | LitKind::Char('0')), - Ok(LitKind::Byte(b'9') | LitKind::Char('9')), +fn is_incomplete_range(start: &Expr, end: &Expr) -> bool { + match (&start.peel_parens().kind, &end.peel_parens().kind) { + (&ExprKind::Lit(start_lit), &ExprKind::Lit(end_lit)) => { + matches!( + (LitKind::from_token_lit(start_lit), LitKind::from_token_lit(end_lit),), + ( + Ok(LitKind::Byte(b'a') | LitKind::Char('a')), + Ok(LitKind::Byte(b'z') | LitKind::Char('z')) + ) | ( + Ok(LitKind::Byte(b'A') | LitKind::Char('A')), + Ok(LitKind::Byte(b'Z') | LitKind::Char('Z')), + ) | ( + Ok(LitKind::Byte(b'0') | LitKind::Char('0')), + Ok(LitKind::Byte(b'9') | LitKind::Char('9')), + ) ) - ) - && !in_external_macro(cx.sess(), span) - { - span_lint_and_then(cx, ALMOST_COMPLETE_RANGE, span, "almost complete ascii range", |diag| { - if let Some((span, sugg)) = sugg { - diag.span_suggestion(span, "use an inclusive range", sugg, Applicability::MaybeIncorrect); - } - }); + }, + _ => false, } } 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 2003dd1fb0e..ed4cdce8cb8 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 +1,8 @@ -use clippy_utils::consts::{constant_with_source, Constant, ConstantSource}; +use clippy_utils::consts::{constant, 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 rustc_hir::{Expr, Item, ItemKind, Node}; +use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::sym; @@ -42,17 +43,16 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnConstants { let Some((condition, panic_expn)) = find_assert_args(cx, e, macro_call.expn) else { return; }; - let Some((Constant::Bool(val), source)) = constant_with_source(cx, cx.typeck_results(), condition) else { + let Some(Constant::Bool(val)) = constant(cx, cx.typeck_results(), condition) else { return; }; - if let ConstantSource::Constant = source - && let Node::Item(Item { - kind: ItemKind::Const(..), - .. - }) = cx.tcx.parent_hir_node(e.hir_id) - { - return; + + match condition.kind { + ExprKind::Path(..) | ExprKind::Lit(_) => {}, + _ if is_inside_always_const_context(cx.tcx, e.hir_id) => return, + _ => {}, } + if val { span_lint_and_help( cx, diff --git a/src/tools/clippy/clippy_lints/src/assigning_clones.rs b/src/tools/clippy/clippy_lints/src/assigning_clones.rs index 406f38f411e..0de0031ed24 100644 --- a/src/tools/clippy/clippy_lints/src/assigning_clones.rs +++ b/src/tools/clippy/clippy_lints/src/assigning_clones.rs @@ -1,18 +1,16 @@ use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::macros::HirNode; use clippy_utils::mir::{enclosing_mir, PossibleBorrowerMap}; use clippy_utils::sugg::Sugg; -use clippy_utils::{is_trait_method, local_is_initialized, path_to_local}; +use clippy_utils::{is_diag_trait_item, last_path_segment, local_is_initialized, path_to_local}; use rustc_errors::Applicability; use rustc_hir::{self as hir, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::mir; use rustc_middle::ty::{self, Instance, Mutability}; use rustc_session::impl_lint_pass; -use rustc_span::def_id::DefId; use rustc_span::symbol::sym; -use rustc_span::{ExpnKind, Span, SyntaxContext}; +use rustc_span::{Span, SyntaxContext}; declare_clippy_lint! { /// ### What it does @@ -68,165 +66,82 @@ impl AssigningClones { impl_lint_pass!(AssigningClones => [ASSIGNING_CLONES]); impl<'tcx> LateLintPass<'tcx> for AssigningClones { - fn check_expr(&mut self, cx: &LateContext<'tcx>, assign_expr: &'tcx Expr<'_>) { - // Do not fire the lint in macros - let ctxt = assign_expr.span().ctxt(); - let expn_data = ctxt.outer_expn_data(); - match expn_data.kind { - ExpnKind::AstPass(_) | ExpnKind::Desugaring(_) | ExpnKind::Macro(..) => return, - ExpnKind::Root => {}, - } - - let ExprKind::Assign(lhs, rhs, _span) = assign_expr.kind else { - return; - }; - - let Some(call) = extract_call(cx, rhs) else { - return; - }; - - if is_ok_to_suggest(cx, lhs, &call, &self.msrv) { - suggest(cx, ctxt, assign_expr, lhs, &call); - } - } - - extract_msrv_attr!(LateContext); -} - -// Try to resolve the call to `Clone::clone` or `ToOwned::to_owned`. -fn extract_call<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Option<CallCandidate<'tcx>> { - let fn_def_id = clippy_utils::fn_def_id(cx, expr)?; - - // Fast paths to only check method calls without arguments or function calls with a single argument - let (target, kind, resolved_method) = match expr.kind { - ExprKind::MethodCall(path, receiver, [], _span) => { - let args = cx.typeck_results().node_args(expr.hir_id); - - // If we could not resolve the method, don't apply the lint - let Ok(Some(resolved_method)) = Instance::try_resolve(cx.tcx, cx.param_env, fn_def_id, args) else { - return None; - }; - if is_trait_method(cx, expr, sym::Clone) && path.ident.name == sym::clone { - (TargetTrait::Clone, CallKind::MethodCall { receiver }, resolved_method) - } else if is_trait_method(cx, expr, sym::ToOwned) && path.ident.name.as_str() == "to_owned" { - (TargetTrait::ToOwned, CallKind::MethodCall { receiver }, resolved_method) - } else { - return None; + fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) { + if let ExprKind::Assign(lhs, rhs, _) = e.kind + && let typeck = cx.typeck_results() + && let (call_kind, fn_name, fn_id, fn_arg, fn_gen_args) = match rhs.kind { + ExprKind::Call(f, [arg]) + if let ExprKind::Path(fn_path) = &f.kind + && let Some(id) = typeck.qpath_res(fn_path, f.hir_id).opt_def_id() => + { + (CallKind::Ufcs, last_path_segment(fn_path).ident.name, id, arg, typeck.node_args(f.hir_id)) + }, + ExprKind::MethodCall(name, recv, [], _) if let Some(id) = typeck.type_dependent_def_id(rhs.hir_id) => { + (CallKind::Method, name.ident.name, id, recv, typeck.node_args(rhs.hir_id)) + }, + _ => return, } - }, - ExprKind::Call(function, [arg]) => { - let kind = cx.typeck_results().node_type(function.hir_id).kind(); - - // If we could not resolve the method, don't apply the lint - let Ok(Some(resolved_method)) = (match kind { - ty::FnDef(_, args) => Instance::try_resolve(cx.tcx, cx.param_env, fn_def_id, args), - _ => Ok(None), - }) else { - return None; - }; - if cx.tcx.is_diagnostic_item(sym::to_owned_method, fn_def_id) { - ( - TargetTrait::ToOwned, - CallKind::FunctionCall { self_arg: arg }, - resolved_method, - ) - } else if let Some(trait_did) = cx.tcx.trait_of_item(fn_def_id) - && cx.tcx.is_diagnostic_item(sym::Clone, trait_did) - { - ( - TargetTrait::Clone, - CallKind::FunctionCall { self_arg: arg }, - resolved_method, - ) - } else { - return None; + && let ctxt = e.span.ctxt() + // Don't lint in macros. + && ctxt.is_root() + && let which_trait = match fn_name { + sym::clone if is_diag_trait_item(cx, fn_id, sym::Clone) => CloneTrait::Clone, + _ if fn_name.as_str() == "to_owned" + && is_diag_trait_item(cx, fn_id, sym::ToOwned) + && self.msrv.meets(msrvs::CLONE_INTO) => + { + CloneTrait::ToOwned + }, + _ => return, } - }, - _ => return None, - }; - - Some(CallCandidate { - span: expr.span, - target, - kind, - method_def_id: resolved_method.def_id(), - }) -} - -// Return true if we find that the called method has a custom implementation and isn't derived or -// provided by default by the corresponding trait. -fn is_ok_to_suggest<'tcx>(cx: &LateContext<'tcx>, lhs: &Expr<'tcx>, call: &CallCandidate<'tcx>, msrv: &Msrv) -> bool { - // For calls to .to_owned we suggest using .clone_into(), which was only stablilized in 1.63. - // If the current MSRV is below that, don't suggest the lint. - if !msrv.meets(msrvs::CLONE_INTO) && matches!(call.target, TargetTrait::ToOwned) { - return false; - } - - // If the left-hand side is a local variable, it might be uninitialized at this point. - // In that case we do not want to suggest the lint. - if let Some(local) = path_to_local(lhs) { - // TODO: This check currently bails if the local variable has no initializer. - // That is overly conservative - the lint should fire even if there was no initializer, - // but the variable has been initialized before `lhs` was evaluated. - if !local_is_initialized(cx, local) { - return false; - } - } - - let Some(impl_block) = cx.tcx.impl_of_method(call.method_def_id) else { - return false; - }; - - // If the method implementation comes from #[derive(Clone)], then don't suggest the lint. - // Automatically generated Clone impls do not currently override `clone_from`. - // See e.g. https://github.com/rust-lang/rust/pull/98445#issuecomment-1190681305 for more details. - if cx.tcx.is_builtin_derived(impl_block) { - return false; - } - - // If the call expression is inside an impl block that contains the method invoked by the - // call expression, we bail out to avoid suggesting something that could result in endless - // recursion. - if let Some(local_block_id) = impl_block.as_local() - && let Some(block) = cx.tcx.hir_node_by_def_id(local_block_id).as_owner() - { - let impl_block_owner = block.def_id(); - if cx - .tcx - .hir() - .parent_id_iter(lhs.hir_id) - .any(|parent| parent.owner == impl_block_owner) + && let Ok(Some(resolved_fn)) = Instance::try_resolve(cx.tcx, cx.param_env, fn_id, fn_gen_args) + // TODO: This check currently bails if the local variable has no initializer. + // That is overly conservative - the lint should fire even if there was no initializer, + // but the variable has been initialized before `lhs` was evaluated. + && path_to_local(lhs).map_or(true, |lhs| local_is_initialized(cx, lhs)) + && let Some(resolved_impl) = cx.tcx.impl_of_method(resolved_fn.def_id()) + // Derived forms don't implement `clone_from`/`clone_into`. + // See https://github.com/rust-lang/rust/pull/98445#issuecomment-1190681305 + && !cx.tcx.is_builtin_derived(resolved_impl) + // Don't suggest calling a function we're implementing. + && resolved_impl.as_local().map_or(true, |block_id| { + cx.tcx.hir().parent_owner_iter(e.hir_id).all(|(id, _)| id.def_id != block_id) + }) + && let resolved_assoc_items = cx.tcx.associated_items(resolved_impl) + // Only suggest if `clone_from`/`clone_into` is explicitly implemented + && resolved_assoc_items.in_definition_order().any(|assoc| + match which_trait { + CloneTrait::Clone => assoc.name == sym::clone_from, + CloneTrait::ToOwned => assoc.name.as_str() == "clone_into", + } + ) + && !clone_source_borrows_from_dest(cx, lhs, rhs.span) { - return false; + span_lint_and_then( + cx, + ASSIGNING_CLONES, + e.span, + match which_trait { + CloneTrait::Clone => "assigning the result of `Clone::clone()` may be inefficient", + CloneTrait::ToOwned => "assigning the result of `ToOwned::to_owned()` may be inefficient", + }, + |diag| { + let mut app = Applicability::Unspecified; + diag.span_suggestion( + e.span, + match which_trait { + CloneTrait::Clone => "use `clone_from()`", + CloneTrait::ToOwned => "use `clone_into()`", + }, + build_sugg(cx, ctxt, lhs, fn_arg, which_trait, call_kind, &mut app), + app, + ); + }, + ); } } - // Find the function for which we want to check that it is implemented. - let provided_fn = match call.target { - TargetTrait::Clone => cx.tcx.get_diagnostic_item(sym::Clone).and_then(|clone| { - cx.tcx - .provided_trait_methods(clone) - .find(|item| item.name == sym::clone_from) - }), - TargetTrait::ToOwned => cx.tcx.get_diagnostic_item(sym::ToOwned).and_then(|to_owned| { - cx.tcx - .provided_trait_methods(to_owned) - .find(|item| item.name.as_str() == "clone_into") - }), - }; - let Some(provided_fn) = provided_fn else { - return false; - }; - - if clone_source_borrows_from_dest(cx, lhs, call.span) { - return false; - } - - // Now take a look if the impl block defines an implementation for the method that we're interested - // in. If not, then we're using a default implementation, which is not interesting, so we will - // not suggest the lint. - let implemented_fns = cx.tcx.impl_item_implementor_ids(impl_block); - implemented_fns.contains_key(&provided_fn.def_id) + extract_msrv_attr!(LateContext); } /// Checks if the data being cloned borrows from the place that is being assigned to: @@ -239,16 +154,6 @@ fn is_ok_to_suggest<'tcx>(cx: &LateContext<'tcx>, lhs: &Expr<'tcx>, call: &CallC /// /// This cannot be written `s2.clone_into(&mut s)` because it has conflicting borrows. fn clone_source_borrows_from_dest(cx: &LateContext<'_>, lhs: &Expr<'_>, call_span: Span) -> bool { - /// If this basic block only exists to drop a local as part of an assignment, returns its - /// successor. Otherwise returns the basic block that was passed in. - fn skip_drop_block(mir: &mir::Body<'_>, bb: mir::BasicBlock) -> mir::BasicBlock { - if let mir::TerminatorKind::Drop { target, .. } = mir.basic_blocks[bb].terminator().kind { - target - } else { - bb - } - } - let Some(mir) = enclosing_mir(cx.tcx, lhs.hir_id) else { return false; }; @@ -267,172 +172,123 @@ fn clone_source_borrows_from_dest(cx: &LateContext<'_>, lhs: &Expr<'_>, call_spa // // bb2: // s = s_temp - for bb in mir.basic_blocks.iter() { - let terminator = bb.terminator(); - - // Look for the to_owned/clone call. - if terminator.source_info.span != call_span { - continue; + if let Some(terminator) = mir.basic_blocks.iter() + .map(mir::BasicBlockData::terminator) + .find(|term| term.source_info.span == call_span) + && let mir::TerminatorKind::Call { ref args, target: Some(assign_bb), .. } = terminator.kind + && let [source] = &**args + && let mir::Operand::Move(source) = &source.node + && let assign_bb = &mir.basic_blocks[assign_bb] + && let assign_bb = match assign_bb.terminator().kind { + // Skip the drop of the assignment's destination. + mir::TerminatorKind::Drop { target, .. } => &mir.basic_blocks[target], + _ => assign_bb, } - - if let mir::TerminatorKind::Call { ref args, target: Some(assign_bb), .. } = terminator.kind - && let [source] = &**args - && let mir::Operand::Move(source) = &source.node - && let assign_bb = skip_drop_block(mir, assign_bb) - // Skip any storage statements as they are just noise - && let Some(assignment) = mir.basic_blocks[assign_bb].statements - .iter() - .find(|stmt| { - !matches!(stmt.kind, mir::StatementKind::StorageDead(_) | mir::StatementKind::StorageLive(_)) - }) - && let mir::StatementKind::Assign(box (borrowed, _)) = &assignment.kind - && let Some(borrowers) = borrow_map.get(&borrowed.local) - && borrowers.contains(source.local) - { - return true; - } - - return false; + // Skip any storage statements as they are just noise + && let Some(assignment) = assign_bb.statements + .iter() + .find(|stmt| { + !matches!(stmt.kind, mir::StatementKind::StorageDead(_) | mir::StatementKind::StorageLive(_)) + }) + && let mir::StatementKind::Assign(box (borrowed, _)) = &assignment.kind + && let Some(borrowers) = borrow_map.get(&borrowed.local) + { + borrowers.contains(source.local) + } else { + false } - false -} - -fn suggest<'tcx>( - cx: &LateContext<'tcx>, - ctxt: SyntaxContext, - assign_expr: &Expr<'tcx>, - lhs: &Expr<'tcx>, - call: &CallCandidate<'tcx>, -) { - span_lint_and_then(cx, ASSIGNING_CLONES, assign_expr.span, call.message(), |diag| { - let mut applicability = Applicability::Unspecified; - - diag.span_suggestion( - assign_expr.span, - call.suggestion_msg(), - call.suggested_replacement(cx, ctxt, lhs, &mut applicability), - applicability, - ); - }); } -#[derive(Copy, Clone, Debug)] -enum CallKind<'tcx> { - MethodCall { receiver: &'tcx Expr<'tcx> }, - FunctionCall { self_arg: &'tcx Expr<'tcx> }, -} - -#[derive(Copy, Clone, Debug)] -enum TargetTrait { +#[derive(Clone, Copy)] +enum CloneTrait { Clone, ToOwned, } -#[derive(Debug)] -struct CallCandidate<'tcx> { - span: Span, - target: TargetTrait, - kind: CallKind<'tcx>, - // DefId of the called method from an impl block that implements the target trait - method_def_id: DefId, +#[derive(Copy, Clone)] +enum CallKind { + Ufcs, + Method, } -impl<'tcx> CallCandidate<'tcx> { - #[inline] - fn message(&self) -> &'static str { - match self.target { - TargetTrait::Clone => "assigning the result of `Clone::clone()` may be inefficient", - TargetTrait::ToOwned => "assigning the result of `ToOwned::to_owned()` may be inefficient", - } - } - - #[inline] - fn suggestion_msg(&self) -> &'static str { - match self.target { - TargetTrait::Clone => "use `clone_from()`", - TargetTrait::ToOwned => "use `clone_into()`", - } - } - - fn suggested_replacement( - &self, - cx: &LateContext<'tcx>, - ctxt: SyntaxContext, - lhs: &Expr<'tcx>, - applicability: &mut Applicability, - ) -> String { - match self.target { - TargetTrait::Clone => { - match self.kind { - CallKind::MethodCall { receiver } => { - let receiver_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { - // `*lhs = self_expr.clone();` -> `lhs.clone_from(self_expr)` - Sugg::hir_with_applicability(cx, ref_expr, "_", applicability) - } else { - // `lhs = self_expr.clone();` -> `lhs.clone_from(self_expr)` - Sugg::hir_with_applicability(cx, lhs, "_", applicability) - } - .maybe_par(); - - // Determine whether we need to reference the argument to clone_from(). - let clone_receiver_type = cx.typeck_results().expr_ty(receiver); - let clone_receiver_adj_type = cx.typeck_results().expr_ty_adjusted(receiver); - let mut arg_sugg = Sugg::hir_with_context(cx, receiver, ctxt, "_", applicability); - if clone_receiver_type != clone_receiver_adj_type { - // The receiver may have been a value type, so we need to add an `&` to - // be sure the argument to clone_from will be a reference. - arg_sugg = arg_sugg.addr(); - }; - - format!("{receiver_sugg}.clone_from({arg_sugg})") - }, - CallKind::FunctionCall { self_arg, .. } => { - let self_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { - // `*lhs = Clone::clone(self_expr);` -> `Clone::clone_from(lhs, self_expr)` - Sugg::hir_with_applicability(cx, ref_expr, "_", applicability) - } else { - // `lhs = Clone::clone(self_expr);` -> `Clone::clone_from(&mut lhs, self_expr)` - Sugg::hir_with_applicability(cx, lhs, "_", applicability).mut_addr() - }; - // The RHS had to be exactly correct before the call, there is no auto-deref for function calls. - let rhs_sugg = Sugg::hir_with_context(cx, self_arg, ctxt, "_", applicability); - - format!("Clone::clone_from({self_sugg}, {rhs_sugg})") - }, - } - }, - TargetTrait::ToOwned => { - let rhs_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { - // `*lhs = rhs.to_owned()` -> `rhs.clone_into(lhs)` - // `*lhs = ToOwned::to_owned(rhs)` -> `ToOwned::clone_into(rhs, lhs)` - let sugg = Sugg::hir_with_applicability(cx, ref_expr, "_", applicability).maybe_par(); - let inner_type = cx.typeck_results().expr_ty(ref_expr); - // If after unwrapping the dereference, the type is not a mutable reference, we add &mut to make it - // deref to a mutable reference. - if matches!(inner_type.kind(), ty::Ref(_, _, Mutability::Mut)) { - sugg +fn build_sugg<'tcx>( + cx: &LateContext<'tcx>, + ctxt: SyntaxContext, + lhs: &'tcx Expr<'_>, + fn_arg: &'tcx Expr<'_>, + which_trait: CloneTrait, + call_kind: CallKind, + app: &mut Applicability, +) -> String { + match which_trait { + CloneTrait::Clone => { + match call_kind { + CallKind::Method => { + let receiver_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { + // `*lhs = self_expr.clone();` -> `lhs.clone_from(self_expr)` + Sugg::hir_with_applicability(cx, ref_expr, "_", app) } else { - sugg.mut_addr() + // `lhs = self_expr.clone();` -> `lhs.clone_from(self_expr)` + Sugg::hir_with_applicability(cx, lhs, "_", app) } + .maybe_par(); + + // Determine whether we need to reference the argument to clone_from(). + let clone_receiver_type = cx.typeck_results().expr_ty(fn_arg); + let clone_receiver_adj_type = cx.typeck_results().expr_ty_adjusted(fn_arg); + let mut arg_sugg = Sugg::hir_with_context(cx, fn_arg, ctxt, "_", app); + if clone_receiver_type != clone_receiver_adj_type { + // The receiver may have been a value type, so we need to add an `&` to + // be sure the argument to clone_from will be a reference. + arg_sugg = arg_sugg.addr(); + }; + + format!("{receiver_sugg}.clone_from({arg_sugg})") + }, + CallKind::Ufcs => { + let self_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { + // `*lhs = Clone::clone(self_expr);` -> `Clone::clone_from(lhs, self_expr)` + Sugg::hir_with_applicability(cx, ref_expr, "_", app) + } else { + // `lhs = Clone::clone(self_expr);` -> `Clone::clone_from(&mut lhs, self_expr)` + Sugg::hir_with_applicability(cx, lhs, "_", app).mut_addr() + }; + // The RHS had to be exactly correct before the call, there is no auto-deref for function calls. + let rhs_sugg = Sugg::hir_with_context(cx, fn_arg, ctxt, "_", app); + + format!("Clone::clone_from({self_sugg}, {rhs_sugg})") + }, + } + }, + CloneTrait::ToOwned => { + let rhs_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { + // `*lhs = rhs.to_owned()` -> `rhs.clone_into(lhs)` + // `*lhs = ToOwned::to_owned(rhs)` -> `ToOwned::clone_into(rhs, lhs)` + let sugg = Sugg::hir_with_applicability(cx, ref_expr, "_", app).maybe_par(); + let inner_type = cx.typeck_results().expr_ty(ref_expr); + // If after unwrapping the dereference, the type is not a mutable reference, we add &mut to make it + // deref to a mutable reference. + if matches!(inner_type.kind(), ty::Ref(_, _, Mutability::Mut)) { + sugg } else { - // `lhs = rhs.to_owned()` -> `rhs.clone_into(&mut lhs)` - // `lhs = ToOwned::to_owned(rhs)` -> `ToOwned::clone_into(rhs, &mut lhs)` - Sugg::hir_with_applicability(cx, lhs, "_", applicability) - .maybe_par() - .mut_addr() - }; - - match self.kind { - CallKind::MethodCall { receiver } => { - let receiver_sugg = Sugg::hir_with_context(cx, receiver, ctxt, "_", applicability); - format!("{receiver_sugg}.clone_into({rhs_sugg})") - }, - CallKind::FunctionCall { self_arg, .. } => { - let self_sugg = Sugg::hir_with_context(cx, self_arg, ctxt, "_", applicability); - format!("ToOwned::clone_into({self_sugg}, {rhs_sugg})") - }, + sugg.mut_addr() } - }, - } + } else { + // `lhs = rhs.to_owned()` -> `rhs.clone_into(&mut lhs)` + // `lhs = ToOwned::to_owned(rhs)` -> `ToOwned::clone_into(rhs, &mut lhs)` + Sugg::hir_with_applicability(cx, lhs, "_", app).maybe_par().mut_addr() + }; + + match call_kind { + CallKind::Method => { + let receiver_sugg = Sugg::hir_with_context(cx, fn_arg, ctxt, "_", app); + format!("{receiver_sugg}.clone_into({rhs_sugg})") + }, + CallKind::Ufcs => { + let self_sugg = Sugg::hir_with_context(cx, fn_arg, ctxt, "_", app); + format!("ToOwned::clone_into({self_sugg}, {rhs_sugg})") + }, + } + }, } } 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 f25a474d9bb..d4a1e2780d0 100644 --- a/src/tools/clippy/clippy_lints/src/await_holding_invalid.rs +++ b/src/tools/clippy/clippy_lints/src/await_holding_invalid.rs @@ -11,21 +11,25 @@ use rustc_span::{sym, Span}; declare_clippy_lint! { /// ### What it does - /// Checks for calls to await while holding a non-async-aware MutexGuard. + /// Checks for calls to `await` while holding a non-async-aware + /// `MutexGuard`. /// /// ### Why is this bad? - /// The Mutex types found in std::sync and parking_lot - /// are not designed to operate in an async context across await points. + /// The Mutex types found in [`std::sync`][https://doc.rust-lang.org/stable/std/sync/] and + /// [`parking_lot`](https://docs.rs/parking_lot/latest/parking_lot/) are + /// not designed to operate in an async context across await points. /// - /// There are two potential solutions. One is to use an async-aware Mutex - /// type. Many asynchronous foundation crates provide such a Mutex type. The - /// other solution is to ensure the mutex is unlocked before calling await, - /// either by introducing a scope or an explicit call to Drop::drop. + /// There are two potential solutions. One is to use an async-aware `Mutex` + /// type. Many asynchronous foundation crates provide such a `Mutex` type. + /// The other solution is to ensure the mutex is unlocked before calling + /// `await`, either by introducing a scope or an explicit call to + /// [`Drop::drop`](https://doc.rust-lang.org/std/ops/trait.Drop.html). /// /// ### Known problems /// Will report false positive for explicitly dropped guards - /// ([#6446](https://github.com/rust-lang/rust-clippy/issues/6446)). A workaround for this is - /// to wrap the `.lock()` call in a block instead of explicitly dropping the guard. + /// ([#6446](https://github.com/rust-lang/rust-clippy/issues/6446)). A + /// workaround for this is to wrap the `.lock()` call in a block instead of + /// explicitly dropping the guard. /// /// ### Example /// ```no_run @@ -73,11 +77,11 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for calls to await while holding a `RefCell` `Ref` or `RefMut`. + /// Checks for calls to `await` while holding a `RefCell`, `Ref`, or `RefMut`. /// /// ### Why is this bad? /// `RefCell` refs only check for exclusive mutable access - /// at runtime. Holding onto a `RefCell` ref across an `await` suspension point + /// at runtime. Holding a `RefCell` ref across an await suspension point /// risks panics from a mutable ref shared while other refs are outstanding. /// /// ### Known problems @@ -131,13 +135,13 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Allows users to configure types which should not be held across `await` + /// Allows users to configure types which should not be held across await /// suspension points. /// /// ### Why is this bad? - /// There are some types which are perfectly "safe" to be used concurrently - /// from a memory access perspective but will cause bugs at runtime if they - /// are held in such a way. + /// There are some types which are perfectly safe to use concurrently from + /// a memory access perspective, but that will cause bugs at runtime if + /// they are held in such a way. /// /// ### Example /// @@ -228,15 +232,15 @@ impl AwaitHolding { cx, AWAIT_HOLDING_LOCK, ty_cause.source_info.span, - "this `MutexGuard` is held across an `await` point", + "this `MutexGuard` is held across an await point", |diag| { diag.help( "consider using an async-aware `Mutex` type or ensuring the \ - `MutexGuard` is dropped before calling await", + `MutexGuard` is dropped before calling `await`", ); diag.span_note( await_points(), - "these are all the `await` points this lock is held through", + "these are all the await points this lock is held through", ); }, ); @@ -245,12 +249,12 @@ impl AwaitHolding { cx, AWAIT_HOLDING_REFCELL_REF, ty_cause.source_info.span, - "this `RefCell` reference is held across an `await` point", + "this `RefCell` reference is held across an await point", |diag| { diag.help("ensure the reference is dropped before calling `await`"); diag.span_note( await_points(), - "these are all the `await` points this reference is held through", + "these are all the await points this reference is held through", ); }, ); @@ -268,7 +272,7 @@ fn emit_invalid_type(cx: &LateContext<'_>, span: Span, disallowed: &DisallowedPa AWAIT_HOLDING_INVALID_TYPE, span, format!( - "`{}` may not be held across an `await` point per `clippy.toml`", + "`{}` may not be held across an await point per `clippy.toml`", disallowed.path() ), |diag| { diff --git a/src/tools/clippy/clippy_lints/src/bool_to_int_with_if.rs b/src/tools/clippy/clippy_lints/src/bool_to_int_with_if.rs index cfb76cab6dc..561ca9bd986 100644 --- a/src/tools/clippy/clippy_lints/src/bool_to_int_with_if.rs +++ b/src/tools/clippy/clippy_lints/src/bool_to_int_with_if.rs @@ -1,13 +1,11 @@ -use clippy_utils::higher::If; -use rustc_ast::LitKind; -use rustc_hir::{Block, ExprKind}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::declare_lint_pass; - use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::sugg::Sugg; -use clippy_utils::{in_constant, is_else_clause, is_integer_literal}; +use clippy_utils::{in_constant, is_else_clause}; +use rustc_ast::LitKind; use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_session::declare_lint_pass; declare_clippy_lint! { /// ### What it does @@ -47,80 +45,64 @@ declare_clippy_lint! { declare_lint_pass!(BoolToIntWithIf => [BOOL_TO_INT_WITH_IF]); impl<'tcx> LateLintPass<'tcx> for BoolToIntWithIf { - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx rustc_hir::Expr<'tcx>) { - if !expr.span.from_expansion() && !in_constant(cx, expr.hir_id) { - check_if_else(cx, expr); - } - } -} - -fn check_if_else<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx rustc_hir::Expr<'tcx>) { - if let Some(If { - cond, - then, - r#else: Some(r#else), - }) = If::hir(expr) - && let Some(then_lit) = int_literal(then) - && let Some(else_lit) = int_literal(r#else) - { - let inverted = if is_integer_literal(then_lit, 1) && is_integer_literal(else_lit, 0) { - false - } else if is_integer_literal(then_lit, 0) && is_integer_literal(else_lit, 1) { - true - } else { - // Expression isn't boolean, exit - return; - }; - let mut applicability = Applicability::MachineApplicable; - let snippet = { - let mut sugg = Sugg::hir_with_applicability(cx, cond, "..", &mut applicability); - if inverted { - sugg = !sugg; - } - sugg - }; - - let ty = cx.typeck_results().expr_ty(then_lit); // then and else must be of same type + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if let ExprKind::If(cond, then, Some(else_)) = expr.kind + && matches!(cond.kind, ExprKind::DropTemps(_)) + && let Some(then_lit) = as_int_bool_lit(then) + && let Some(else_lit) = as_int_bool_lit(else_) + && then_lit != else_lit + && !expr.span.from_expansion() + && !in_constant(cx, expr.hir_id) + { + let ty = cx.typeck_results().expr_ty(then); + let mut applicability = Applicability::MachineApplicable; + let snippet = { + let mut sugg = Sugg::hir_with_applicability(cx, cond, "..", &mut applicability); + if !then_lit { + sugg = !sugg; + } + sugg + }; + let suggestion = { + let mut s = Sugg::NonParen(format!("{ty}::from({snippet})").into()); + // when used in else clause if statement should be wrapped in curly braces + if is_else_clause(cx.tcx, expr) { + s = s.blockify(); + } + s + }; - let suggestion = { - let wrap_in_curly = is_else_clause(cx.tcx, expr); - let mut s = Sugg::NonParen(format!("{ty}::from({snippet})").into()); - if wrap_in_curly { - s = s.blockify(); - } - s - }; // when used in else clause if statement should be wrapped in curly braces + let into_snippet = snippet.clone().maybe_par(); + let as_snippet = snippet.as_ty(ty); - let into_snippet = snippet.clone().maybe_par(); - let as_snippet = snippet.as_ty(ty); - - span_lint_and_then( - cx, - BOOL_TO_INT_WITH_IF, - expr.span, - "boolean to int conversion using if", - |diag| { - diag.span_suggestion(expr.span, "replace with from", suggestion, applicability); - diag.note(format!( - "`{as_snippet}` or `{into_snippet}.into()` can also be valid options" - )); - }, - ); - }; + span_lint_and_then( + cx, + BOOL_TO_INT_WITH_IF, + expr.span, + "boolean to int conversion using if", + |diag| { + diag.span_suggestion(expr.span, "replace with from", suggestion, applicability); + diag.note(format!( + "`{as_snippet}` or `{into_snippet}.into()` can also be valid options" + )); + }, + ); + } + } } -// If block contains only a int literal expression, return literal expression -fn int_literal<'tcx>(expr: &'tcx rustc_hir::Expr<'tcx>) -> Option<&'tcx rustc_hir::Expr<'tcx>> { - if let ExprKind::Block(block, _) = expr.kind - && let Block { - stmts: [], // Shouldn't lint if statements with side effects - expr: Some(expr), - .. - } = block - && let ExprKind::Lit(lit) = &expr.kind - && let LitKind::Int(_, _) = lit.node +fn as_int_bool_lit(e: &Expr<'_>) -> Option<bool> { + if let ExprKind::Block(b, _) = e.kind + && b.stmts.is_empty() + && let Some(e) = b.expr + && let ExprKind::Lit(lit) = e.kind + && let LitKind::Int(x, _) = lit.node { - Some(expr) + match x.get() { + 0 => Some(false), + 1 => Some(true), + _ => None, + } } else { None } diff --git a/src/tools/clippy/clippy_lints/src/byte_char_slices.rs b/src/tools/clippy/clippy_lints/src/byte_char_slices.rs new file mode 100644 index 00000000000..a9fe190f177 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/byte_char_slices.rs @@ -0,0 +1,80 @@ +use clippy_utils::diagnostics::span_lint_and_sugg; +use rustc_ast::ast::{BorrowKind, Expr, ExprKind, Mutability}; +use rustc_ast::token::{Lit, LitKind}; +use rustc_errors::Applicability; +use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// Checks for hard to read slices of byte characters, that could be more easily expressed as a + /// byte string. + /// + /// ### Why is this bad? + /// + /// Potentially makes the string harder to read. + /// + /// ### Example + /// ```ignore + /// &[b'H', b'e', b'l', b'l', b'o']; + /// ``` + /// Use instead: + /// ```ignore + /// b"Hello" + /// ``` + #[clippy::version = "1.68.0"] + pub BYTE_CHAR_SLICES, + style, + "hard to read byte char slice" +} +declare_lint_pass!(ByteCharSlice => [BYTE_CHAR_SLICES]); + +impl EarlyLintPass for ByteCharSlice { + fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { + if let Some(slice) = is_byte_char_slices(expr) + && !expr.span.from_expansion() + { + span_lint_and_sugg( + cx, + BYTE_CHAR_SLICES, + expr.span, + "can be more succinctly written as a byte str", + "try", + format!("b\"{slice}\""), + Applicability::MaybeIncorrect, + ); + } + } +} + +fn is_byte_char_slices(expr: &Expr) -> Option<String> { + if let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, expr) = &expr.kind { + match &expr.kind { + ExprKind::Array(members) => { + if members.is_empty() { + return None; + } + + members + .iter() + .map(|member| match &member.kind { + ExprKind::Lit(Lit { + kind: LitKind::Byte, + symbol, + .. + }) => Some(symbol.as_str()), + _ => None, + }) + .map(|maybe_quote| match maybe_quote { + Some("\"") => Some("\\\""), + Some("\\'") => Some("'"), + other => other, + }) + .collect::<Option<String>>() + }, + _ => None, + } + } else { + None + } +} diff --git a/src/tools/clippy/clippy_lints/src/casts/mod.rs b/src/tools/clippy/clippy_lints/src/casts/mod.rs index e60c36ced75..54f0c7c4687 100644 --- a/src/tools/clippy/clippy_lints/src/casts/mod.rs +++ b/src/tools/clippy/clippy_lints/src/casts/mod.rs @@ -32,7 +32,7 @@ use rustc_session::impl_lint_pass; declare_clippy_lint! { /// ### What it does - /// Checks for casts from any numerical to a float type where + /// Checks for casts from any numeric type to a float type where /// the receiving type cannot store all values from the original type without /// rounding errors. This possible rounding is to be expected, so this lint is /// `Allow` by default. @@ -58,14 +58,14 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for casts from a signed to an unsigned numerical + /// Checks for casts from a signed to an unsigned numeric /// type. In this case, negative values wrap around to large positive values, - /// which can be quite surprising in practice. However, as the cast works as + /// which can be quite surprising in practice. However, since the cast works as /// defined, this lint is `Allow` by default. /// /// ### Why is this bad? /// Possibly surprising results. You can activate this lint - /// as a one-time check to see where numerical wrapping can arise. + /// as a one-time check to see where numeric wrapping can arise. /// /// ### Example /// ```no_run @@ -80,7 +80,7 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for casts between numerical types that may + /// Checks for casts between numeric types that may /// truncate large values. This is expected behavior, so the cast is `Allow` by /// default. It suggests user either explicitly ignore the lint, /// or use `try_from()` and handle the truncation, default, or panic explicitly. @@ -120,17 +120,16 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does /// Checks for casts from an unsigned type to a signed type of - /// the same size, or possibly smaller due to target dependent integers. - /// Performing such a cast is a 'no-op' for the compiler, i.e., nothing is - /// changed at the bit level, and the binary representation of the value is + /// the same size, or possibly smaller due to target-dependent integers. + /// Performing such a cast is a no-op for the compiler (that is, nothing is + /// changed at the bit level), and the binary representation of the value is /// reinterpreted. This can cause wrapping if the value is too big /// for the target signed type. However, the cast works as defined, so this lint /// is `Allow` by default. /// /// ### Why is this bad? /// While such a cast is not bad in itself, the results can - /// be surprising when this is not the intended behavior, as demonstrated by the - /// example below. + /// be surprising when this is not the intended behavior: /// /// ### Example /// ```no_run @@ -144,16 +143,16 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for casts between numerical types that may - /// be replaced by safe conversion functions. + /// Checks for casts between numeric types that can be replaced by safe + /// conversion functions. /// /// ### Why is this bad? - /// Rust's `as` keyword will perform many kinds of - /// conversions, including silently lossy conversions. Conversion functions such - /// as `i32::from` will only perform lossless conversions. Using the conversion - /// functions prevents conversions from turning into silent lossy conversions if - /// the types of the input expressions ever change, and make it easier for - /// people reading the code to know that the conversion is lossless. + /// Rust's `as` keyword will perform many kinds of conversions, including + /// silently lossy conversions. Conversion functions such as `i32::from` + /// will only perform lossless conversions. Using the conversion functions + /// prevents conversions from becoming silently lossy if the input types + /// ever change, and makes it clear for people reading the code that the + /// conversion is lossless. /// /// ### Example /// ```no_run @@ -177,19 +176,21 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for casts to the same type, casts of int literals to integer types, casts of float - /// literals to float types and casts between raw pointers without changing type or constness. + /// Checks for casts to the same type, casts of int literals to integer + /// types, casts of float literals to float types, and casts between raw + /// pointers that don't change type or constness. /// /// ### Why is this bad? /// It's just unnecessary. /// /// ### Known problems - /// When the expression on the left is a function call, the lint considers the return type to be - /// a type alias if it's aliased through a `use` statement - /// (like `use std::io::Result as IoResult`). It will not lint such cases. + /// When the expression on the left is a function call, the lint considers + /// the return type to be a type alias if it's aliased through a `use` + /// statement (like `use std::io::Result as IoResult`). It will not lint + /// such cases. /// - /// This check is also rather primitive. It will only work on primitive types without any - /// intermediate references, raw pointers and trait objects may or may not work. + /// This check will only work on primitive types without any intermediate + /// references: raw pointers and trait objects may or may not work. /// /// ### Example /// ```no_run @@ -211,17 +212,17 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for casts, using `as` or `pointer::cast`, - /// from a less-strictly-aligned pointer to a more-strictly-aligned pointer + /// Checks for casts, using `as` or `pointer::cast`, from a + /// less strictly aligned pointer to a more strictly aligned pointer. /// /// ### Why is this bad? - /// Dereferencing the resulting pointer may be undefined - /// behavior. + /// Dereferencing the resulting pointer may be undefined behavior. /// /// ### Known problems - /// Using `std::ptr::read_unaligned` and `std::ptr::write_unaligned` or similar - /// on the resulting pointer is fine. Is over-zealous: Casts with manual alignment checks or casts like - /// u64-> u8 -> u16 can be fine. Miri is able to do a more in-depth analysis. + /// Using [`std::ptr::read_unaligned`](https://doc.rust-lang.org/std/ptr/fn.read_unaligned.html) and [`std::ptr::write_unaligned`](https://doc.rust-lang.org/std/ptr/fn.write_unaligned.html) or + /// similar on the resulting pointer is fine. Is over-zealous: casts with + /// manual alignment checks or casts like `u64` -> `u8` -> `u16` can be + /// fine. Miri is able to do a more in-depth analysis. /// /// ### Example /// ```no_run @@ -234,20 +235,21 @@ declare_clippy_lint! { #[clippy::version = "pre 1.29.0"] pub CAST_PTR_ALIGNMENT, pedantic, - "cast from a pointer to a more-strictly-aligned pointer" + "cast from a pointer to a more strictly aligned pointer" } declare_clippy_lint! { /// ### What it does - /// Checks for casts of function pointers to something other than usize + /// Checks for casts of function pointers to something other than `usize`. /// /// ### Why is this bad? - /// Casting a function pointer to anything other than usize/isize is not portable across - /// architectures, because you end up losing bits if the target type is too small or end up with a - /// bunch of extra bits that waste space and add more instructions to the final binary than - /// strictly necessary for the problem + /// Casting a function pointer to anything other than `usize`/`isize` is + /// not portable across architectures. If the target type is too small the + /// address would be truncated, and target types larger than `usize` are + /// unnecessary. /// - /// Casting to isize also doesn't make sense since there are no signed addresses. + /// Casting to `isize` also doesn't make sense, since addresses are never + /// signed. /// /// ### Example /// ```no_run @@ -263,17 +265,17 @@ declare_clippy_lint! { #[clippy::version = "pre 1.29.0"] pub FN_TO_NUMERIC_CAST, style, - "casting a function pointer to a numeric type other than usize" + "casting a function pointer to a numeric type other than `usize`" } declare_clippy_lint! { /// ### What it does /// Checks for casts of a function pointer to a numeric type not wide enough to - /// store address. + /// store an address. /// /// ### Why is this bad? /// Such a cast discards some bits of the function's address. If this is intended, it would be more - /// clearly expressed by casting to usize first, then casting the usize to the intended type (with + /// clearly expressed by casting to `usize` first, then casting the `usize` to the intended type (with /// a comment) to perform the truncation. /// /// ### Example @@ -306,7 +308,7 @@ declare_clippy_lint! { /// ### Why restrict this? /// Casting a function pointer to an integer can have surprising results and can occur /// accidentally if parentheses are omitted from a function call. If you aren't doing anything - /// low-level with function pointers then you can opt-out of casting functions to integers in + /// low-level with function pointers then you can opt out of casting functions to integers in /// order to avoid mistakes. Alternatively, you can use this lint to audit all uses of function /// pointer casts in your code. /// @@ -349,8 +351,8 @@ declare_clippy_lint! { /// ### Why is this bad? /// In general, casting values to smaller types is /// error-prone and should be avoided where possible. In the particular case of - /// converting a character literal to u8, it is easy to avoid by just using a - /// byte literal instead. As an added bonus, `b'a'` is even slightly shorter + /// converting a character literal to `u8`, it is easy to avoid by just using a + /// byte literal instead. As an added bonus, `b'a'` is also slightly shorter /// than `'a' as u8`. /// /// ### Example @@ -371,12 +373,13 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for `as` casts between raw pointers without changing its mutability, - /// namely `*const T` to `*const U` and `*mut T` to `*mut U`. + /// Checks for `as` casts between raw pointers that don't change their + /// constness, namely `*const T` to `*const U` and `*mut T` to `*mut U`. /// /// ### Why is this bad? - /// Though `as` casts between raw pointers are not terrible, `pointer::cast` is safer because - /// it cannot accidentally change the pointer's mutability nor cast the pointer to other types like `usize`. + /// Though `as` casts between raw pointers are not terrible, + /// `pointer::cast` is safer because it cannot accidentally change the + /// pointer's mutability, nor cast the pointer to other types like `usize`. /// /// ### Example /// ```no_run @@ -395,12 +398,12 @@ declare_clippy_lint! { #[clippy::version = "1.51.0"] pub PTR_AS_PTR, pedantic, - "casting using `as` from and to raw pointers that doesn't change its mutability, where `pointer::cast` could take the place of `as`" + "casting using `as` between raw pointers that doesn't change their constness, where `pointer::cast` could take the place of `as`" } declare_clippy_lint! { /// ### What it does - /// Checks for `as` casts between raw pointers which change its constness, namely `*const T` to + /// Checks for `as` casts between raw pointers that change their constness, namely `*const T` to /// `*mut T` and `*mut T` to `*const T`. /// /// ### Why is this bad? @@ -423,12 +426,12 @@ declare_clippy_lint! { #[clippy::version = "1.72.0"] pub PTR_CAST_CONSTNESS, pedantic, - "casting using `as` from and to raw pointers to change constness when specialized methods apply" + "casting using `as` on raw pointers to change constness when specialized methods apply" } declare_clippy_lint! { /// ### What it does - /// Checks for casts from an enum type to an integral type which will definitely truncate the + /// Checks for casts from an enum type to an integral type that will definitely truncate the /// value. /// /// ### Why is this bad? @@ -442,7 +445,7 @@ declare_clippy_lint! { #[clippy::version = "1.61.0"] pub CAST_ENUM_TRUNCATION, suspicious, - "casts from an enum type to an integral type which will truncate the value" + "casts from an enum type to an integral type that will truncate the value" } declare_clippy_lint! { @@ -621,7 +624,7 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for the result of a `&self`-taking `as_ptr` being cast to a mutable pointer + /// Checks for the result of a `&self`-taking `as_ptr` being cast to a mutable pointer. /// /// ### Why is this bad? /// Since `as_ptr` takes a `&self`, the pointer won't have write permissions unless interior diff --git a/src/tools/clippy/clippy_lints/src/casts/ptr_as_ptr.rs b/src/tools/clippy/clippy_lints/src/casts/ptr_as_ptr.rs index 2c168405ee2..86c5f6b9f0b 100644 --- a/src/tools/clippy/clippy_lints/src/casts/ptr_as_ptr.rs +++ b/src/tools/clippy/clippy_lints/src/casts/ptr_as_ptr.rs @@ -92,7 +92,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, msrv: &Msrv) { cx, PTR_AS_PTR, expr.span, - "`as` casting between raw pointers without changing its mutability", + "`as` casting between raw pointers without changing their constness", help, final_suggestion, app, diff --git a/src/tools/clippy/clippy_lints/src/cfg_not_test.rs b/src/tools/clippy/clippy_lints/src/cfg_not_test.rs new file mode 100644 index 00000000000..b54f392bf2f --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/cfg_not_test.rs @@ -0,0 +1,60 @@ +use clippy_utils::diagnostics::span_lint_and_then; +use rustc_ast::NestedMetaItem; +use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// Checks for usage of `cfg` that excludes code from `test` builds. (i.e., `#{cfg(not(test))]`) + /// + /// ### Why is this bad? + /// This may give the false impression that a codebase has 100% coverage, yet actually has untested code. + /// Enabling this also guards against excessive mockery as well, which is an anti-pattern. + /// + /// ### Example + /// ```rust + /// # fn important_check() {} + /// #[cfg(not(test))] + /// important_check(); // I'm not actually tested, but not including me will falsely increase coverage! + /// ``` + /// Use instead: + /// ```rust + /// # fn important_check() {} + /// important_check(); + /// ``` + #[clippy::version = "1.73.0"] + pub CFG_NOT_TEST, + restriction, + "enforce against excluding code from test builds" +} + +declare_lint_pass!(CfgNotTest => [CFG_NOT_TEST]); + +impl EarlyLintPass for CfgNotTest { + fn check_attribute(&mut self, cx: &EarlyContext<'_>, attr: &rustc_ast::Attribute) { + if attr.has_name(rustc_span::sym::cfg) && contains_not_test(attr.meta_item_list().as_deref(), false) { + span_lint_and_then( + cx, + CFG_NOT_TEST, + attr.span, + "code is excluded from test builds", + |diag| { + diag.help("consider not excluding any code from test builds"); + diag.note_once("this could increase code coverage despite not actually being tested"); + }, + ); + } + } +} + +fn contains_not_test(list: Option<&[NestedMetaItem]>, not: bool) -> bool { + list.is_some_and(|list| { + list.iter().any(|item| { + item.ident().is_some_and(|ident| match ident.name { + rustc_span::sym::not => contains_not_test(item.meta_item_list(), !not), + rustc_span::sym::test => not, + _ => contains_not_test(item.meta_item_list(), not), + }) + }) + }) +} diff --git a/src/tools/clippy/clippy_lints/src/declared_lints.rs b/src/tools/clippy/clippy_lints/src/declared_lints.rs index 638de5e818c..eabc67601a2 100644 --- a/src/tools/clippy/clippy_lints/src/declared_lints.rs +++ b/src/tools/clippy/clippy_lints/src/declared_lints.rs @@ -8,8 +8,6 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ #[cfg(feature = "internal")] crate::utils::internal_lints::collapsible_calls::COLLAPSIBLE_SPAN_LINT_CALLS_INFO, #[cfg(feature = "internal")] - crate::utils::internal_lints::compiler_lint_functions::COMPILER_LINT_FUNCTIONS_INFO, - #[cfg(feature = "internal")] crate::utils::internal_lints::interning_defined_symbol::INTERNING_DEFINED_SYMBOL_INFO, #[cfg(feature = "internal")] crate::utils::internal_lints::interning_defined_symbol::UNNECESSARY_SYMBOL_STR_INFO, @@ -73,6 +71,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::booleans::OVERLY_COMPLEX_BOOL_EXPR_INFO, crate::borrow_deref_ref::BORROW_DEREF_REF_INFO, crate::box_default::BOX_DEFAULT_INFO, + crate::byte_char_slices::BYTE_CHAR_SLICES_INFO, crate::cargo::CARGO_COMMON_METADATA_INFO, crate::cargo::LINT_GROUPS_PRIORITY_INFO, crate::cargo::MULTIPLE_CRATE_VERSIONS_INFO, @@ -103,6 +102,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::casts::REF_AS_PTR_INFO, crate::casts::UNNECESSARY_CAST_INFO, crate::casts::ZERO_PTR_INFO, + crate::cfg_not_test::CFG_NOT_TEST_INFO, crate::checked_conversions::CHECKED_CONVERSIONS_INFO, crate::cognitive_complexity::COGNITIVE_COMPLEXITY_INFO, crate::collapsible_if::COLLAPSIBLE_ELSE_IF_INFO, @@ -313,6 +313,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::manual_range_patterns::MANUAL_RANGE_PATTERNS_INFO, crate::manual_rem_euclid::MANUAL_REM_EUCLID_INFO, crate::manual_retain::MANUAL_RETAIN_INFO, + crate::manual_rotate::MANUAL_ROTATE_INFO, crate::manual_slice_size_calculation::MANUAL_SLICE_SIZE_CALCULATION_INFO, crate::manual_string_new::MANUAL_STRING_NEW_INFO, crate::manual_strip::MANUAL_STRIP_INFO, @@ -503,6 +504,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::missing_assert_message::MISSING_ASSERT_MESSAGE_INFO, crate::missing_asserts_for_indexing::MISSING_ASSERTS_FOR_INDEXING_INFO, crate::missing_const_for_fn::MISSING_CONST_FOR_FN_INFO, + crate::missing_const_for_thread_local::MISSING_CONST_FOR_THREAD_LOCAL_INFO, crate::missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS_INFO, crate::missing_enforced_import_rename::MISSING_ENFORCED_IMPORT_RENAMES_INFO, crate::missing_fields_in_debug::MISSING_FIELDS_IN_DEBUG_INFO, @@ -585,12 +587,12 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::operators::VERBOSE_BIT_MASK_INFO, crate::option_env_unwrap::OPTION_ENV_UNWRAP_INFO, crate::option_if_let_else::OPTION_IF_LET_ELSE_INFO, - crate::overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL_INFO, crate::panic_in_result_fn::PANIC_IN_RESULT_FN_INFO, crate::panic_unimplemented::PANIC_INFO, crate::panic_unimplemented::TODO_INFO, crate::panic_unimplemented::UNIMPLEMENTED_INFO, crate::panic_unimplemented::UNREACHABLE_INFO, + crate::panicking_overflow_checks::PANICKING_OVERFLOW_CHECKS_INFO, crate::partial_pub_fields::PARTIAL_PUB_FIELDS_INFO, crate::partialeq_ne_impl::PARTIALEQ_NE_IMPL_INFO, crate::partialeq_to_none::PARTIALEQ_TO_NONE_INFO, @@ -644,6 +646,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::semicolon_block::SEMICOLON_OUTSIDE_BLOCK_INFO, crate::semicolon_if_nothing_returned::SEMICOLON_IF_NOTHING_RETURNED_INFO, crate::serde_api::SERDE_API_MISUSE_INFO, + crate::set_contains_or_insert::SET_CONTAINS_OR_INSERT_INFO, crate::shadow::SHADOW_REUSE_INFO, crate::shadow::SHADOW_SAME_INFO, crate::shadow::SHADOW_UNRELATED_INFO, @@ -679,7 +682,6 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::tabs_in_doc_comments::TABS_IN_DOC_COMMENTS_INFO, crate::temporary_assignment::TEMPORARY_ASSIGNMENT_INFO, crate::tests_outside_test_module::TESTS_OUTSIDE_TEST_MODULE_INFO, - crate::thread_local_initializer_can_be_made_const::THREAD_LOCAL_INITIALIZER_CAN_BE_MADE_CONST_INFO, crate::to_digit_is_some::TO_DIGIT_IS_SOME_INFO, crate::to_string_trait_impl::TO_STRING_TRAIT_IMPL_INFO, crate::trailing_empty_array::TRAILING_EMPTY_ARRAY_INFO, diff --git a/src/tools/clippy/clippy_lints/src/default.rs b/src/tools/clippy/clippy_lints/src/default.rs index 2b3f4854255..72fa05be3cc 100644 --- a/src/tools/clippy/clippy_lints/src/default.rs +++ b/src/tools/clippy/clippy_lints/src/default.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::{span_lint_and_note, span_lint_and_sugg}; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::{has_drop, is_copy}; -use clippy_utils::{any_parent_is_automatically_derived, contains_name, get_parent_expr, is_from_proc_macro}; +use clippy_utils::{contains_name, get_parent_expr, in_automatically_derived, is_from_proc_macro}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::Res; @@ -84,7 +84,7 @@ impl<'tcx> LateLintPass<'tcx> for Default { // Avoid cases already linted by `field_reassign_with_default` && !self.reassigned_linted.contains(&expr.span) && let ExprKind::Call(path, ..) = expr.kind - && !any_parent_is_automatically_derived(cx.tcx, expr.hir_id) + && !in_automatically_derived(cx.tcx, expr.hir_id) && let ExprKind::Path(ref qpath) = path.kind && let Some(def_id) = cx.qpath_res(qpath, path.hir_id).opt_def_id() && cx.tcx.is_diagnostic_item(sym::default_fn, def_id) @@ -113,9 +113,9 @@ impl<'tcx> LateLintPass<'tcx> for Default { // start from the `let mut _ = _::default();` and look at all the following // statements, see if they re-assign the fields of the binding let stmts_head = match block.stmts { + [] | [_] => return, // Skip the last statement since there cannot possibly be any following statements that re-assign fields. - [head @ .., _] if !head.is_empty() => head, - _ => return, + [head @ .., _] => head, }; for (stmt_idx, stmt) in stmts_head.iter().enumerate() { // find all binding statements like `let mut _ = T::default()` where `T::default()` is the @@ -124,7 +124,7 @@ impl<'tcx> LateLintPass<'tcx> for Default { let (local, variant, binding_name, binding_type, span) = if let StmtKind::Let(local) = stmt.kind // only take `let ...` statements && let Some(expr) = local.init - && !any_parent_is_automatically_derived(cx.tcx, expr.hir_id) + && !in_automatically_derived(cx.tcx, expr.hir_id) && !expr.span.from_expansion() // only take bindings to identifiers && let PatKind::Binding(_, binding_id, ident, _) = local.pat.kind 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 ff631909bcb..9af73db6849 100644 --- a/src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs +++ b/src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs @@ -50,6 +50,8 @@ declare_lint_pass!(DefaultNumericFallback => [DEFAULT_NUMERIC_FALLBACK]); impl<'tcx> LateLintPass<'tcx> for DefaultNumericFallback { fn check_body(&mut self, cx: &LateContext<'tcx>, body: &Body<'tcx>) { let hir = cx.tcx.hir(); + // NOTE: this is different from `clippy_utils::is_inside_always_const_context`. + // Inline const supports type inference. let is_parent_const = matches!( hir.body_const_context(hir.body_owner_def_id(body.id())), Some(ConstContext::Const { inline: false } | ConstContext::Static(_)) diff --git a/src/tools/clippy/clippy_lints/src/dereference.rs b/src/tools/clippy/clippy_lints/src/dereference.rs index a115f8d0631..253f9959e13 100644 --- a/src/tools/clippy/clippy_lints/src/dereference.rs +++ b/src/tools/clippy/clippy_lints/src/dereference.rs @@ -3,7 +3,8 @@ 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, peel_mid_ty_refs}; use clippy_utils::{ - expr_use_ctxt, get_parent_expr, is_block_like, is_lint_allowed, path_to_local, DefinedTy, ExprUseNode, + expr_use_ctxt, get_parent_expr, is_block_like, is_lint_allowed, path_to_local, peel_middle_ty_refs, DefinedTy, + ExprUseNode, }; use core::mem; use rustc_ast::util::parser::{PREC_PREFIX, PREC_UNAMBIGUOUS}; @@ -175,6 +176,7 @@ struct StateData<'tcx> { adjusted_ty: Ty<'tcx>, } +#[derive(Debug)] struct DerefedBorrow { count: usize, msg: &'static str, @@ -182,6 +184,7 @@ struct DerefedBorrow { for_field_access: Option<Symbol>, } +#[derive(Debug)] enum State { // Any number of deref method calls. DerefMethod { @@ -744,7 +747,7 @@ fn in_postfix_position<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'tcx>) -> boo } } -#[derive(Clone, Copy)] +#[derive(Clone, Copy, Debug)] enum TyCoercionStability { Deref, Reborrow, @@ -1042,16 +1045,28 @@ fn report<'tcx>( return; } - let (prefix, precedence) = if let Some(mutability) = mutability - && !typeck.expr_ty(expr).is_ref() + let ty = typeck.expr_ty(expr); + + // `&&[T; N]`, or `&&..&[T; N]` (src) cannot coerce to `&[T]` (dst). + if let ty::Ref(_, dst, _) = data.adjusted_ty.kind() + && dst.is_slice() { - let prefix = match mutability { - Mutability::Not => "&", - Mutability::Mut => "&mut ", - }; - (prefix, PREC_PREFIX) - } else { - ("", 0) + let (src, n_src_refs) = peel_middle_ty_refs(ty); + if n_src_refs >= 2 && src.is_array() { + return; + } + } + + let (prefix, precedence) = match mutability { + Some(mutability) if !ty.is_ref() => { + let prefix = match mutability { + Mutability::Not => "&", + Mutability::Mut => "&mut ", + }; + (prefix, PREC_PREFIX) + }, + None if !ty.is_ref() && data.adjusted_ty.is_ref() => ("&", 0), + _ => ("", 0), }; span_lint_hir_and_then( cx, diff --git a/src/tools/clippy/clippy_lints/src/disallowed_methods.rs b/src/tools/clippy/clippy_lints/src/disallowed_methods.rs index 9de879604e2..38fe687f7cc 100644 --- a/src/tools/clippy/clippy_lints/src/disallowed_methods.rs +++ b/src/tools/clippy/clippy_lints/src/disallowed_methods.rs @@ -1,6 +1,6 @@ use clippy_config::types::DisallowedPath; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::{fn_def_id, get_parent_expr, path_def_id}; +use rustc_hir::def::{CtorKind, DefKind, Res}; use rustc_hir::def_id::DefIdMap; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -83,26 +83,26 @@ impl<'tcx> LateLintPass<'tcx> for DisallowedMethods { } fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - let uncalled_path = if let Some(parent) = get_parent_expr(cx, expr) - && let ExprKind::Call(receiver, _) = parent.kind - && receiver.hir_id == expr.hir_id - { - None - } else { - path_def_id(cx, expr) + let (id, span) = match &expr.kind { + ExprKind::Path(path) + if let Res::Def(DefKind::Fn | DefKind::Ctor(_, CtorKind::Fn) | DefKind::AssocFn, id) = + cx.qpath_res(path, expr.hir_id) => + { + (id, expr.span) + }, + ExprKind::MethodCall(name, ..) if let Some(id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) => { + (id, name.ident.span) + }, + _ => return, }; - let Some(def_id) = uncalled_path.or_else(|| fn_def_id(cx, expr)) else { - return; - }; - let conf = match self.disallowed.get(&def_id) { - Some(&index) => &self.conf_disallowed[index], - None => return, - }; - let msg = format!("use of a disallowed method `{}`", conf.path()); - span_lint_and_then(cx, DISALLOWED_METHODS, expr.span, msg, |diag| { - if let Some(reason) = conf.reason() { - diag.note(reason); - } - }); + if let Some(&index) = self.disallowed.get(&id) { + let conf = &self.conf_disallowed[index]; + let msg = format!("use of a disallowed method `{}`", conf.path()); + span_lint_and_then(cx, DISALLOWED_METHODS, span, msg, |diag| { + if let Some(reason) = conf.reason() { + diag.note(reason); + } + }); + } } } diff --git a/src/tools/clippy/clippy_lints/src/disallowed_names.rs b/src/tools/clippy/clippy_lints/src/disallowed_names.rs index 2afbf184117..58809604c37 100644 --- a/src/tools/clippy/clippy_lints/src/disallowed_names.rs +++ b/src/tools/clippy/clippy_lints/src/disallowed_names.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint; -use clippy_utils::is_test_module_or_function; +use clippy_utils::is_in_test; use rustc_data_structures::fx::FxHashSet; -use rustc_hir::{Item, Pat, PatKind}; +use rustc_hir::{Pat, PatKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; @@ -27,52 +27,30 @@ declare_clippy_lint! { #[derive(Clone, Debug)] pub struct DisallowedNames { disallow: FxHashSet<String>, - test_modules_deep: u32, } impl DisallowedNames { pub fn new(disallowed_names: &[String]) -> Self { Self { disallow: disallowed_names.iter().cloned().collect(), - test_modules_deep: 0, } } - - fn in_test_module(&self) -> bool { - self.test_modules_deep != 0 - } } impl_lint_pass!(DisallowedNames => [DISALLOWED_NAMES]); impl<'tcx> LateLintPass<'tcx> for DisallowedNames { - fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) { - if is_test_module_or_function(cx.tcx, item) { - self.test_modules_deep = self.test_modules_deep.saturating_add(1); - } - } - fn check_pat(&mut self, cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>) { - // Check whether we are under the `test` attribute. - if self.in_test_module() { - return; - } - - if let PatKind::Binding(.., ident, _) = pat.kind { - if self.disallow.contains(&ident.name.to_string()) { - span_lint( - cx, - DISALLOWED_NAMES, - ident.span, - format!("use of a disallowed/placeholder name `{}`", ident.name), - ); - } - } - } - - fn check_item_post(&mut self, cx: &LateContext<'_>, item: &Item<'_>) { - if is_test_module_or_function(cx.tcx, item) { - self.test_modules_deep = self.test_modules_deep.saturating_sub(1); + if let PatKind::Binding(.., ident, _) = pat.kind + && self.disallow.contains(&ident.name.to_string()) + && !is_in_test(cx.tcx, pat.hir_id) + { + span_lint( + cx, + DISALLOWED_NAMES, + ident.span, + format!("use of a disallowed/placeholder name `{}`", ident.name), + ); } } } diff --git a/src/tools/clippy/clippy_lints/src/disallowed_script_idents.rs b/src/tools/clippy/clippy_lints/src/disallowed_script_idents.rs index a995f06fb73..5ce11900adf 100644 --- a/src/tools/clippy/clippy_lints/src/disallowed_script_idents.rs +++ b/src/tools/clippy/clippy_lints/src/disallowed_script_idents.rs @@ -82,30 +82,25 @@ impl EarlyLintPass for DisallowedScriptIdents { // Note: `symbol.as_str()` is an expensive operation, thus should not be called // more than once for a single symbol. let symbol_str = symbol.as_str(); - if symbol_str.is_ascii() { - continue; - } - for c in symbol_str.chars() { - // We want to iterate through all the scripts associated with this character - // and check whether at least of one scripts is in the whitelist. - let forbidden_script = c - .script_extension() - .iter() - .find(|script| !self.whitelist.contains(script)); - if let Some(script) = forbidden_script { - span_lint( - cx, - DISALLOWED_SCRIPT_IDENTS, - span, - format!( - "identifier `{symbol_str}` has a Unicode script that is not allowed by configuration: {}", - script.full_name() - ), - ); - // We don't want to spawn warning multiple times over a single identifier. - break; - } + // Check if any character in the symbol is not part of any allowed script. + // Fast path for ascii-only idents. + if !symbol_str.is_ascii() + && let Some(script) = symbol_str.chars().find_map(|c| { + c.script_extension() + .iter() + .find(|script| !self.whitelist.contains(script)) + }) + { + span_lint( + cx, + DISALLOWED_SCRIPT_IDENTS, + span, + format!( + "identifier `{symbol_str}` has a Unicode script that is not allowed by configuration: {}", + script.full_name() + ), + ); } } } 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 38bc58a5501..bd1cc46e185 100644 --- a/src/tools/clippy/clippy_lints/src/doc/lazy_continuation.rs +++ b/src/tools/clippy/clippy_lints/src/doc/lazy_continuation.rs @@ -22,6 +22,7 @@ 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. @@ -46,11 +47,35 @@ pub(super) fn check( .sum(); if ccount < blockquote_level || lcount < list_indentation { let msg = if ccount < blockquote_level { - "doc quote missing `>` marker" + "doc quote line without `>` marker" } else { - "doc list item missing indentation" + "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_with_style( + 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, + SuggestionStyle::ShowAlways, + ); + 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/mod.rs b/src/tools/clippy/clippy_lints/src/doc/mod.rs index 3e210fd153b..a2a1a51920f 100644 --- a/src/tools/clippy/clippy_lints/src/doc/mod.rs +++ b/src/tools/clippy/clippy_lints/src/doc/mod.rs @@ -6,7 +6,8 @@ use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::Visitable; use clippy_utils::{in_constant, is_entrypoint_fn, is_trait_impl_item, method_chain_args}; use pulldown_cmark::Event::{ - Code, DisplayMath, End, FootnoteReference, HardBreak, Html, InlineHtml, InlineMath, Rule, SoftBreak, Start, TaskListMarker, Text, + Code, DisplayMath, End, FootnoteReference, HardBreak, Html, InlineHtml, InlineMath, Rule, SoftBreak, Start, + TaskListMarker, Text, }; use pulldown_cmark::Tag::{BlockQuote, CodeBlock, FootnoteDefinition, Heading, Item, Link, Paragraph}; use pulldown_cmark::{BrokenLink, CodeBlockKind, CowStr, Options, TagEnd}; @@ -747,7 +748,8 @@ fn check_doc<'a, Events: Iterator<Item = (pulldown_cmark::Event<'a>, Range<usize }, Start(FootnoteDefinition(..)) => in_footnote_definition = true, End(TagEnd::FootnoteDefinition) => in_footnote_definition = false, - Start(_) | End(_) => (), // We don't care about other tags + Start(_) | End(_) // We don't care about other tags + | TaskListMarker(_) | Code(_) | Rule | InlineMath(..) | DisplayMath(..) => (), SoftBreak | HardBreak => { if !containers.is_empty() && let Some((next_event, next_range)) = events.peek() @@ -762,13 +764,24 @@ 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, ); } }, - TaskListMarker(_) | Code(_) | Rule | InlineMath(..) | DisplayMath(..) => (), FootnoteReference(text) | Text(text) => { paragraph_range.end = range.end; - ticks_unbalanced |= text.contains('`') && !in_code; + let range_ = range.clone(); + ticks_unbalanced |= text.contains('`') + && !in_code + && doc[range.clone()].bytes().enumerate().any(|(i, c)| { + // scan the markdown source code bytes for backquotes that aren't preceded by backslashes + // - use bytes, instead of chars, to avoid utf8 decoding overhead (special chars are ascii) + // - relevant backquotes are within doc[range], but backslashes are not, because they're not + // actually part of the rendered text (pulldown-cmark doesn't emit any events for escapes) + // - if `range_.start + i == 0`, then `range_.start + i - 1 == -1`, and since we're working in + // usize, that would underflow and maybe panic + c == b'`' && (range_.start + i == 0 || doc.as_bytes().get(range_.start + i - 1) != Some(&b'\\')) + }); if Some(&text) == in_link.as_ref() || ticks_unbalanced { // Probably a link of the form `<http://example.com>` // Which are represented as a link to "http://example.com" with diff --git a/src/tools/clippy/clippy_lints/src/endian_bytes.rs b/src/tools/clippy/clippy_lints/src/endian_bytes.rs index bb766e96338..99328e3e643 100644 --- a/src/tools/clippy/clippy_lints/src/endian_bytes.rs +++ b/src/tools/clippy/clippy_lints/src/endian_bytes.rs @@ -33,7 +33,7 @@ declare_clippy_lint! { /// Checks for the usage of the `to_le_bytes` method and/or the function `from_le_bytes`. /// /// ### Why restrict this? - /// To ensure use of big endian or the target’s endianness rather than little endian. + /// To ensure use of big-endian or the target’s endianness rather than little-endian. /// /// ### Example /// ```rust,ignore @@ -51,7 +51,7 @@ declare_clippy_lint! { /// Checks for the usage of the `to_be_bytes` method and/or the function `from_be_bytes`. /// /// ### Why restrict this? - /// To ensure use of little endian or the target’s endianness rather than big endian. + /// To ensure use of little-endian or the target’s endianness rather than big-endian. /// /// ### Example /// ```rust,ignore diff --git a/src/tools/clippy/clippy_lints/src/functions/impl_trait_in_params.rs b/src/tools/clippy/clippy_lints/src/functions/impl_trait_in_params.rs index 6fb38a0d6dd..cf85c74e688 100644 --- a/src/tools/clippy/clippy_lints/src/functions/impl_trait_in_params.rs +++ b/src/tools/clippy/clippy_lints/src/functions/impl_trait_in_params.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::is_in_test_function; +use clippy_utils::is_in_test; use rustc_hir as hir; use rustc_hir::intravisit::FnKind; @@ -41,7 +41,7 @@ fn report(cx: &LateContext<'_>, param: &GenericParam<'_>, generics: &Generics<'_ pub(super) fn check_fn<'tcx>(cx: &LateContext<'_>, kind: &'tcx FnKind<'_>, body: &'tcx Body<'_>, hir_id: HirId) { if let FnKind::ItemFn(_, generics, _) = kind && cx.tcx.visibility(cx.tcx.hir().body_owner_def_id(body.id())).is_public() - && !is_in_test_function(cx.tcx, hir_id) + && !is_in_test(cx.tcx, hir_id) { for param in generics.params { if param.is_impl_trait() { @@ -59,7 +59,7 @@ pub(super) fn check_impl_item(cx: &LateContext<'_>, impl_item: &ImplItem<'_>) { && of_trait.is_none() && let body = cx.tcx.hir().body(body_id) && cx.tcx.visibility(cx.tcx.hir().body_owner_def_id(body.id())).is_public() - && !is_in_test_function(cx.tcx, impl_item.hir_id()) + && !is_in_test(cx.tcx, impl_item.hir_id()) { for param in impl_item.generics.params { if param.is_impl_trait() { @@ -75,7 +75,7 @@ pub(super) fn check_trait_item(cx: &LateContext<'_>, trait_item: &TraitItem<'_>, && let hir::Node::Item(item) = cx.tcx.parent_hir_node(trait_item.hir_id()) // ^^ (Will always be a trait) && !item.vis_span.is_empty() // Is public - && !is_in_test_function(cx.tcx, trait_item.hir_id()) + && !is_in_test(cx.tcx, trait_item.hir_id()) { for param in trait_item.generics.params { if param.is_impl_trait() { diff --git a/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs b/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs index 35b4481bfee..5c63d48adaf 100644 --- a/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs +++ b/src/tools/clippy/clippy_lints/src/incompatible_msrv.rs @@ -1,6 +1,6 @@ use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint; -use clippy_utils::is_in_test_function; +use clippy_utils::is_in_test; use rustc_attr::{StabilityLevel, StableSince}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::{Expr, ExprKind, HirId}; @@ -88,7 +88,7 @@ impl IncompatibleMsrv { return; } let version = self.get_def_id_version(cx.tcx, def_id); - if self.msrv.meets(version) || is_in_test_function(cx.tcx, node) { + if self.msrv.meets(version) || is_in_test(cx.tcx, node) { return; } if let ExpnKind::AstPass(_) | ExpnKind::Desugaring(_) = span.ctxt().outer_expn_data().kind { diff --git a/src/tools/clippy/clippy_lints/src/inherent_to_string.rs b/src/tools/clippy/clippy_lints/src/inherent_to_string.rs index 9aedf5ec7e8..ec6174bc030 100644 --- a/src/tools/clippy/clippy_lints/src/inherent_to_string.rs +++ b/src/tools/clippy/clippy_lints/src/inherent_to_string.rs @@ -91,10 +91,6 @@ declare_lint_pass!(InherentToString => [INHERENT_TO_STRING, INHERENT_TO_STRING_S impl<'tcx> LateLintPass<'tcx> for InherentToString { fn check_impl_item(&mut self, cx: &LateContext<'tcx>, impl_item: &'tcx ImplItem<'_>) { - if impl_item.span.from_expansion() { - return; - } - // Check if item is a method called `to_string` and has a parameter 'self' if let ImplItemKind::Fn(ref signature, _) = impl_item.kind // #11201 @@ -106,6 +102,7 @@ impl<'tcx> LateLintPass<'tcx> for InherentToString { && decl.implicit_self.has_implicit_self() && decl.inputs.len() == 1 && impl_item.generics.params.iter().all(|p| matches!(p.kind, GenericParamKind::Lifetime { .. })) + && !impl_item.span.from_expansion() // Check if return type is String && is_type_lang_item(cx, return_ty(cx, impl_item.owner_id), LangItem::String) // Filters instances of to_string which are required by a trait diff --git a/src/tools/clippy/clippy_lints/src/init_numbered_fields.rs b/src/tools/clippy/clippy_lints/src/init_numbered_fields.rs index 1c8fd0a27f9..7f183bb601e 100644 --- a/src/tools/clippy/clippy_lints/src/init_numbered_fields.rs +++ b/src/tools/clippy/clippy_lints/src/init_numbered_fields.rs @@ -1,13 +1,12 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{snippet_with_applicability, snippet_with_context}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; +use rustc_span::SyntaxContext; use std::borrow::Cow; -use std::cmp::Reverse; -use std::collections::BinaryHeap; declare_clippy_lint! { /// ### What it does @@ -44,38 +43,56 @@ declare_lint_pass!(NumberedFields => [INIT_NUMBERED_FIELDS]); impl<'tcx> LateLintPass<'tcx> for NumberedFields { fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) { - if let ExprKind::Struct(path, fields, None) = e.kind { - if !fields.is_empty() - && !e.span.from_expansion() - && fields - .iter() - .all(|f| f.ident.as_str().as_bytes().iter().all(u8::is_ascii_digit)) - && !matches!(cx.qpath_res(path, e.hir_id), Res::Def(DefKind::TyAlias, ..)) - { - let expr_spans = fields - .iter() - .map(|f| (Reverse(f.ident.as_str().parse::<usize>().unwrap()), f.expr.span)) - .collect::<BinaryHeap<_>>(); - let mut appl = Applicability::MachineApplicable; - let snippet = format!( - "{}({})", - snippet_with_applicability(cx, path.span(), "..", &mut appl), - expr_spans - .into_iter_sorted() - .map(|(_, span)| snippet_with_context(cx, span, path.span().ctxt(), "..", &mut appl).0) - .intersperse(Cow::Borrowed(", ")) - .collect::<String>() - ); - span_lint_and_sugg( - cx, - INIT_NUMBERED_FIELDS, - e.span, - "used a field initializer for a tuple struct", - "try", - snippet, - appl, - ); - } + if let ExprKind::Struct(path, fields @ [field, ..], None) = e.kind + // If the first character of any field is a digit it has to be a tuple. + && field.ident.as_str().as_bytes().first().is_some_and(u8::is_ascii_digit) + // Type aliases can't be used as functions. + && !matches!( + cx.qpath_res(path, e.hir_id), + Res::Def(DefKind::TyAlias | DefKind::AssocTy, _) + ) + // This is the only syntax macros can use that works for all struct types. + && !e.span.from_expansion() + && let mut has_side_effects = false + && let Ok(mut expr_spans) = fields + .iter() + .map(|f| { + has_side_effects |= f.expr.can_have_side_effects(); + f.ident.as_str().parse::<usize>().map(|x| (x, f.expr.span)) + }) + .collect::<Result<Vec<_>, _>>() + // We can only reorder the expressions if there are no side effects. + && (!has_side_effects || expr_spans.is_sorted_by_key(|&(idx, _)| idx)) + { + span_lint_and_then( + cx, + INIT_NUMBERED_FIELDS, + e.span, + "used a field initializer for a tuple struct", + |diag| { + if !has_side_effects { + // We already checked the order if there are side effects. + expr_spans.sort_by_key(|&(idx, _)| idx); + } + let mut app = Applicability::MachineApplicable; + diag.span_suggestion( + e.span, + "use tuple initialization", + format!( + "{}({})", + snippet_with_applicability(cx, path.span(), "..", &mut app), + expr_spans + .into_iter() + .map( + |(_, span)| snippet_with_context(cx, span, SyntaxContext::root(), "..", &mut app).0 + ) + .intersperse(Cow::Borrowed(", ")) + .collect::<String>() + ), + app, + ); + }, + ); } } } diff --git a/src/tools/clippy/clippy_lints/src/inline_fn_without_body.rs b/src/tools/clippy/clippy_lints/src/inline_fn_without_body.rs index 860258fd030..5657c58bb0a 100644 --- a/src/tools/clippy/clippy_lints/src/inline_fn_without_body.rs +++ b/src/tools/clippy/clippy_lints/src/inline_fn_without_body.rs @@ -2,12 +2,11 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::sugg::DiagExt; -use rustc_ast::ast::Attribute; use rustc_errors::Applicability; use rustc_hir::{TraitFn, TraitItem, TraitItemKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{sym, Symbol}; +use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -34,27 +33,23 @@ declare_lint_pass!(InlineFnWithoutBody => [INLINE_FN_WITHOUT_BODY]); impl<'tcx> LateLintPass<'tcx> for InlineFnWithoutBody { fn check_trait_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx TraitItem<'_>) { - if let TraitItemKind::Fn(_, TraitFn::Required(_)) = item.kind { - let attrs = cx.tcx.hir().attrs(item.hir_id()); - check_attrs(cx, item.ident.name, attrs); + if let TraitItemKind::Fn(_, TraitFn::Required(_)) = item.kind + && let Some(attr) = cx + .tcx + .hir() + .attrs(item.hir_id()) + .iter() + .find(|a| a.has_name(sym::inline)) + { + span_lint_and_then( + cx, + INLINE_FN_WITHOUT_BODY, + attr.span, + format!("use of `#[inline]` on trait method `{}` which has no body", item.ident), + |diag| { + diag.suggest_remove_item(cx, attr.span, "remove", Applicability::MachineApplicable); + }, + ); } } } - -fn check_attrs(cx: &LateContext<'_>, name: Symbol, attrs: &[Attribute]) { - for attr in attrs { - if !attr.has_name(sym::inline) { - continue; - } - - span_lint_and_then( - cx, - INLINE_FN_WITHOUT_BODY, - attr.span, - format!("use of `#[inline]` on trait method `{name}` which has no body"), - |diag| { - diag.suggest_remove_item(cx, attr.span, "remove", Applicability::MachineApplicable); - }, - ); - } -} diff --git a/src/tools/clippy/clippy_lints/src/instant_subtraction.rs b/src/tools/clippy/clippy_lints/src/instant_subtraction.rs index 10b00f632bb..5fe152d1e30 100644 --- a/src/tools/clippy/clippy_lints/src/instant_subtraction.rs +++ b/src/tools/clippy/clippy_lints/src/instant_subtraction.rs @@ -85,16 +85,19 @@ impl LateLintPass<'_> for InstantSubtraction { lhs, rhs, ) = expr.kind + && let typeck = cx.typeck_results() + && ty::is_type_diagnostic_item(cx, typeck.expr_ty(lhs), sym::Instant) { + let rhs_ty = typeck.expr_ty(rhs); + if is_instant_now_call(cx, lhs) - && is_an_instant(cx, rhs) + && ty::is_type_diagnostic_item(cx, rhs_ty, sym::Instant) && let Some(sugg) = Sugg::hir_opt(cx, rhs) { print_manual_instant_elapsed_sugg(cx, expr, sugg); - } else if !expr.span.from_expansion() + } else if ty::is_type_diagnostic_item(cx, rhs_ty, sym::Duration) + && !expr.span.from_expansion() && self.msrv.meets(msrvs::TRY_FROM) - && is_an_instant(cx, lhs) - && is_a_duration(cx, rhs) { print_unchecked_duration_subtraction_sugg(cx, lhs, rhs, expr); } @@ -115,16 +118,6 @@ fn is_instant_now_call(cx: &LateContext<'_>, expr_block: &'_ Expr<'_>) -> bool { } } -fn is_an_instant(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - let expr_ty = cx.typeck_results().expr_ty(expr); - ty::is_type_diagnostic_item(cx, expr_ty, sym::Instant) -} - -fn is_a_duration(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - let expr_ty = cx.typeck_results().expr_ty(expr); - ty::is_type_diagnostic_item(cx, expr_ty, sym::Duration) -} - fn print_manual_instant_elapsed_sugg(cx: &LateContext<'_>, expr: &Expr<'_>, sugg: Sugg<'_>) { span_lint_and_sugg( cx, diff --git a/src/tools/clippy/clippy_lints/src/items_after_statements.rs b/src/tools/clippy/clippy_lints/src/items_after_statements.rs index 39223c20470..a88d8e24fda 100644 --- a/src/tools/clippy/clippy_lints/src/items_after_statements.rs +++ b/src/tools/clippy/clippy_lints/src/items_after_statements.rs @@ -54,36 +54,35 @@ declare_lint_pass!(ItemsAfterStatements => [ITEMS_AFTER_STATEMENTS]); impl LateLintPass<'_> for ItemsAfterStatements { fn check_block(&mut self, cx: &LateContext<'_>, block: &Block<'_>) { - if in_external_macro(cx.sess(), block.span) { - return; - } - - // skip initial items - let stmts = block - .stmts - .iter() - .skip_while(|stmt| matches!(stmt.kind, StmtKind::Item(..))); - - // lint on all further items - for stmt in stmts { - if let StmtKind::Item(item_id) = stmt.kind { - let item = cx.tcx.hir().item(item_id); - if in_external_macro(cx.sess(), item.span) || !item.span.eq_ctxt(block.span) { - return; - } - if let ItemKind::Macro(..) = item.kind { - // do not lint `macro_rules`, but continue processing further statements - continue; - } - span_lint_hir( - cx, - ITEMS_AFTER_STATEMENTS, - item.hir_id(), - item.span, - "adding items after statements is confusing, since items exist from the \ - start of the scope", - ); - } + if block.stmts.len() > 1 { + let ctxt = block.span.ctxt(); + let mut in_external = None; + block + .stmts + .iter() + .skip_while(|stmt| matches!(stmt.kind, StmtKind::Item(..))) + .filter_map(|stmt| match stmt.kind { + StmtKind::Item(id) => Some(cx.tcx.hir().item(id)), + _ => None, + }) + // Ignore macros since they can only see previously defined locals. + .filter(|item| !matches!(item.kind, ItemKind::Macro(..))) + // Stop linting if macros define items. + .take_while(|item| item.span.ctxt() == ctxt) + // Don't use `next` due to the complex filter chain. + .for_each(|item| { + // Only do the macro check once, but delay it until it's needed. + if !*in_external.get_or_insert_with(|| in_external_macro(cx.sess(), block.span)) { + span_lint_hir( + cx, + ITEMS_AFTER_STATEMENTS, + item.hir_id(), + item.span, + "adding items after statements is confusing, since items exist from the \ + start of the scope", + ); + } + }); } } } 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 1b5f1b49947..ba0cd5d6eb3 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::symbol::sym; +use rustc_span::{sym, Symbol}; declare_clippy_lint! { /// ### What it does @@ -43,30 +43,27 @@ declare_lint_pass!(IterNotReturningIterator => [ITER_NOT_RETURNING_ITERATOR]); impl<'tcx> LateLintPass<'tcx> for IterNotReturningIterator { fn check_trait_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx TraitItem<'_>) { - let name = item.ident.name.as_str(); - if matches!(name, "iter" | "iter_mut") { - if let TraitItemKind::Fn(fn_sig, _) = &item.kind { - check_sig(cx, name, fn_sig, item.owner_id.def_id); - } + if let TraitItemKind::Fn(fn_sig, _) = &item.kind + && matches!(item.ident.name, sym::iter | sym::iter_mut) + { + check_sig(cx, item.ident.name, fn_sig, item.owner_id.def_id); } } fn check_impl_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx ImplItem<'tcx>) { - let name = item.ident.name.as_str(); - if matches!(name, "iter" | "iter_mut") + if let ImplItemKind::Fn(fn_sig, _) = &item.kind + && matches!(item.ident.name, sym::iter | sym::iter_mut) && !matches!( cx.tcx.parent_hir_node(item.hir_id()), Node::Item(Item { kind: ItemKind::Impl(i), .. }) if i.of_trait.is_some() ) { - if let ImplItemKind::Fn(fn_sig, _) = &item.kind { - check_sig(cx, name, fn_sig, item.owner_id.def_id); - } + check_sig(cx, item.ident.name, fn_sig, item.owner_id.def_id); } } } -fn check_sig(cx: &LateContext<'_>, name: &str, sig: &FnSig<'_>, fn_id: LocalDefId) { +fn check_sig(cx: &LateContext<'_>, name: Symbol, sig: &FnSig<'_>, fn_id: LocalDefId) { if sig.decl.implicit_self.has_implicit_self() { let ret_ty = cx .tcx diff --git a/src/tools/clippy/clippy_lints/src/iter_without_into_iter.rs b/src/tools/clippy/clippy_lints/src/iter_without_into_iter.rs index 6b03f2597b0..1e6404190d3 100644 --- a/src/tools/clippy/clippy_lints/src/iter_without_into_iter.rs +++ b/src/tools/clippy/clippy_lints/src/iter_without_into_iter.rs @@ -125,13 +125,13 @@ fn is_ty_exported(cx: &LateContext<'_>, ty: Ty<'_>) -> bool { impl LateLintPass<'_> for IterWithoutIntoIter { fn check_item(&mut self, cx: &LateContext<'_>, item: &rustc_hir::Item<'_>) { - if !in_external_macro(cx.sess(), item.span) - && let ItemKind::Impl(imp) = item.kind + if let ItemKind::Impl(imp) = item.kind && let TyKind::Ref(_, self_ty_without_ref) = &imp.self_ty.kind && let Some(trait_ref) = imp.of_trait && trait_ref .trait_def_id() .is_some_and(|did| cx.tcx.is_diagnostic_item(sym::IntoIterator, did)) + && !in_external_macro(cx.sess(), item.span) && let &ty::Ref(_, ty, mtbl) = cx.tcx.type_of(item.owner_id).instantiate_identity().kind() && let expected_method_name = match mtbl { Mutability::Mut => sym::iter_mut, diff --git a/src/tools/clippy/clippy_lints/src/large_const_arrays.rs b/src/tools/clippy/clippy_lints/src/large_const_arrays.rs index 7f8197c0cc0..b18ab625e60 100644 --- a/src/tools/clippy/clippy_lints/src/large_const_arrays.rs +++ b/src/tools/clippy/clippy_lints/src/large_const_arrays.rs @@ -46,12 +46,12 @@ impl_lint_pass!(LargeConstArrays => [LARGE_CONST_ARRAYS]); impl<'tcx> LateLintPass<'tcx> for LargeConstArrays { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) { - if !item.span.from_expansion() - && let ItemKind::Const(_, generics, _) = &item.kind + if let ItemKind::Const(_, generics, _) = &item.kind // Since static items may not have generics, skip generic const items. // FIXME(generic_const_items): I don't think checking `generics.hwcp` suffices as it // doesn't account for empty where-clauses that only consist of keyword `where` IINM. && generics.params.is_empty() && !generics.has_where_clause_predicates + && !item.span.from_expansion() && let ty = cx.tcx.type_of(item.owner_id).instantiate_identity() && let ty::Array(element_type, cst) = ty.kind() && let ConstKind::Value(_, ty::ValTree::Leaf(element_count)) = cst.kind() 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 0bf7389ef9c..85daadcc537 100644 --- a/src/tools/clippy/clippy_lints/src/large_enum_variant.rs +++ b/src/tools/clippy/clippy_lints/src/large_enum_variant.rs @@ -77,17 +77,12 @@ impl_lint_pass!(LargeEnumVariant => [LARGE_ENUM_VARIANT]); impl<'tcx> LateLintPass<'tcx> for LargeEnumVariant { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &Item<'tcx>) { - if in_external_macro(cx.tcx.sess, item.span) { - return; - } - if let ItemKind::Enum(ref def, _) = item.kind { - let ty = cx.tcx.type_of(item.owner_id).instantiate_identity(); - let ty::Adt(adt, subst) = ty.kind() else { - panic!("already checked whether this is an enum") - }; - if adt.variants().len() <= 1 { - return; - } + if let ItemKind::Enum(ref def, _) = item.kind + && let ty = cx.tcx.type_of(item.owner_id).instantiate_identity() + && let ty::Adt(adt, subst) = ty.kind() + && adt.variants().len() > 1 + && !in_external_macro(cx.tcx.sess, item.span) + { let variants_size = AdtVariantInfo::new(cx, *adt, subst); let mut difference = variants_size[0].size - variants_size[1].size; diff --git a/src/tools/clippy/clippy_lints/src/large_futures.rs b/src/tools/clippy/clippy_lints/src/large_futures.rs index 07488a512a3..602227e4249 100644 --- a/src/tools/clippy/clippy_lints/src/large_futures.rs +++ b/src/tools/clippy/clippy_lints/src/large_futures.rs @@ -54,29 +54,26 @@ impl_lint_pass!(LargeFuture => [LARGE_FUTURES]); impl<'tcx> LateLintPass<'tcx> for LargeFuture { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { - if matches!(expr.span.ctxt().outer_expn_data().kind, rustc_span::ExpnKind::Macro(..)) { - return; - } - if let ExprKind::Match(expr, _, MatchSource::AwaitDesugar) = expr.kind { - if let ExprKind::Call(func, [expr, ..]) = expr.kind - && let ExprKind::Path(QPath::LangItem(LangItem::IntoFutureIntoFuture, ..)) = func.kind - && let ty = cx.typeck_results().expr_ty(expr) - && let Some(future_trait_def_id) = cx.tcx.lang_items().future_trait() - && implements_trait(cx, ty, future_trait_def_id, &[]) - && let Ok(layout) = cx.tcx.layout_of(cx.param_env.and(ty)) - && let size = layout.layout.size() - && size >= Size::from_bytes(self.future_size_threshold) - { - span_lint_and_sugg( - cx, - LARGE_FUTURES, - expr.span, - format!("large future with a size of {} bytes", size.bytes()), - "consider `Box::pin` on it", - format!("Box::pin({})", snippet(cx, expr.span, "..")), - Applicability::Unspecified, - ); - } + if let ExprKind::Match(scrutinee, _, MatchSource::AwaitDesugar) = expr.kind + && let ExprKind::Call(func, [arg, ..]) = scrutinee.kind + && let ExprKind::Path(QPath::LangItem(LangItem::IntoFutureIntoFuture, ..)) = func.kind + && !expr.span.from_expansion() + && let ty = cx.typeck_results().expr_ty(arg) + && let Some(future_trait_def_id) = cx.tcx.lang_items().future_trait() + && implements_trait(cx, ty, future_trait_def_id, &[]) + && let Ok(layout) = cx.tcx.layout_of(cx.param_env.and(ty)) + && let size = layout.layout.size() + && size >= Size::from_bytes(self.future_size_threshold) + { + span_lint_and_sugg( + cx, + LARGE_FUTURES, + arg.span, + format!("large future with a size of {} bytes", size.bytes()), + "consider `Box::pin` on it", + format!("Box::pin({})", snippet(cx, arg.span, "..")), + Applicability::Unspecified, + ); } } } diff --git a/src/tools/clippy/clippy_lints/src/large_include_file.rs b/src/tools/clippy/clippy_lints/src/large_include_file.rs index 07efee159aa..2688283a6ce 100644 --- a/src/tools/clippy/clippy_lints/src/large_include_file.rs +++ b/src/tools/clippy/clippy_lints/src/large_include_file.rs @@ -1,5 +1,4 @@ use clippy_utils::diagnostics::span_lint_and_note; -use clippy_utils::is_lint_allowed; use clippy_utils::macros::root_macro_call_first_node; use rustc_ast::LitKind; use rustc_hir::{Expr, ExprKind}; @@ -52,24 +51,19 @@ impl_lint_pass!(LargeIncludeFile => [LARGE_INCLUDE_FILE]); impl LateLintPass<'_> for LargeIncludeFile { fn check_expr(&mut self, cx: &LateContext<'_>, expr: &'_ Expr<'_>) { - if let Some(macro_call) = root_macro_call_first_node(cx, expr) - && !is_lint_allowed(cx, LARGE_INCLUDE_FILE, expr.hir_id) - && (cx.tcx.is_diagnostic_item(sym::include_bytes_macro, macro_call.def_id) - || cx.tcx.is_diagnostic_item(sym::include_str_macro, macro_call.def_id)) - && let ExprKind::Lit(lit) = &expr.kind - { - let len = match &lit.node { + if let ExprKind::Lit(lit) = &expr.kind + && let len = match &lit.node { // include_bytes LitKind::ByteStr(bstr, _) => bstr.len(), // include_str LitKind::Str(sym, _) => sym.as_str().len(), _ => return, - }; - - if len as u64 <= self.max_file_size { - return; } - + && len as u64 > self.max_file_size + && let Some(macro_call) = root_macro_call_first_node(cx, expr) + && (cx.tcx.is_diagnostic_item(sym::include_bytes_macro, macro_call.def_id) + || cx.tcx.is_diagnostic_item(sym::include_str_macro, macro_call.def_id)) + { span_lint_and_note( cx, LARGE_INCLUDE_FILE, 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 eadfeb6e341..a08b40bef37 100644 --- a/src/tools/clippy/clippy_lints/src/legacy_numeric_constants.rs +++ b/src/tools/clippy/clippy_lints/src/legacy_numeric_constants.rs @@ -48,15 +48,11 @@ impl_lint_pass!(LegacyNumericConstants => [LEGACY_NUMERIC_CONSTANTS]); impl<'tcx> LateLintPass<'tcx> for LegacyNumericConstants { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { - let Self { msrv } = self; - - if !msrv.meets(NUMERIC_ASSOCIATED_CONSTANTS) || in_external_macro(cx.sess(), item.span) { - return; - } - // Integer modules are "TBD" deprecated, and the contents are too, // so lint on the `use` statement directly. if let ItemKind::Use(path, kind @ (UseKind::Single | UseKind::Glob)) = item.kind + && self.msrv.meets(NUMERIC_ASSOCIATED_CONSTANTS) + && !in_external_macro(cx.sess(), item.span) && let Some(def_id) = path.res[0].opt_def_id() { let module = if is_integer_module(cx, def_id) { @@ -103,12 +99,7 @@ impl<'tcx> LateLintPass<'tcx> for LegacyNumericConstants { } fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx rustc_hir::Expr<'tcx>) { - let Self { msrv } = self; - - if !msrv.meets(NUMERIC_ASSOCIATED_CONSTANTS) || in_external_macro(cx.sess(), expr.span) { - return; - } - let ExprKind::Path(qpath) = expr.kind else { + let ExprKind::Path(qpath) = &expr.kind else { return; }; @@ -129,10 +120,10 @@ impl<'tcx> LateLintPass<'tcx> for LegacyNumericConstants { ) // `<integer>::xxx_value` check } else if let QPath::TypeRelative(_, last_segment) = qpath - && let Some(def_id) = cx.qpath_res(&qpath, expr.hir_id).opt_def_id() - && is_integer_method(cx, def_id) + && let Some(def_id) = cx.qpath_res(qpath, expr.hir_id).opt_def_id() && let Some(par_expr) = get_parent_expr(cx, expr) - && let ExprKind::Call(_, _) = par_expr.kind + && let ExprKind::Call(_, []) = par_expr.kind + && is_integer_method(cx, def_id) { let name = last_segment.ident.name.as_str(); @@ -145,19 +136,20 @@ impl<'tcx> LateLintPass<'tcx> for LegacyNumericConstants { return; }; - if is_from_proc_macro(cx, expr) { - return; + if self.msrv.meets(NUMERIC_ASSOCIATED_CONSTANTS) + && !in_external_macro(cx.sess(), expr.span) + && !is_from_proc_macro(cx, expr) + { + span_lint_hir_and_then(cx, LEGACY_NUMERIC_CONSTANTS, expr.hir_id, span, msg, |diag| { + diag.span_suggestion_with_style( + span, + "use the associated constant instead", + sugg, + Applicability::MaybeIncorrect, + SuggestionStyle::ShowAlways, + ); + }); } - - span_lint_hir_and_then(cx, LEGACY_NUMERIC_CONSTANTS, expr.hir_id, span, msg, |diag| { - diag.span_suggestion_with_style( - span, - "use the associated constant instead", - sugg, - Applicability::MaybeIncorrect, - SuggestionStyle::ShowAlways, - ); - }); } extract_msrv_attr!(LateContext); diff --git a/src/tools/clippy/clippy_lints/src/len_zero.rs b/src/tools/clippy/clippy_lints/src/len_zero.rs index 57e0a7aa2c7..4c737371bd2 100644 --- a/src/tools/clippy/clippy_lints/src/len_zero.rs +++ b/src/tools/clippy/clippy_lints/src/len_zero.rs @@ -121,11 +121,9 @@ declare_lint_pass!(LenZero => [LEN_ZERO, LEN_WITHOUT_IS_EMPTY, COMPARISON_TO_EMP impl<'tcx> LateLintPass<'tcx> for LenZero { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) { - if item.span.from_expansion() { - return; - } - - if let ItemKind::Trait(_, _, _, _, trait_items) = item.kind { + if let ItemKind::Trait(_, _, _, _, trait_items) = item.kind + && !item.span.from_expansion() + { check_trait_items(cx, item, trait_items); } } @@ -162,17 +160,14 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { } fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if expr.span.from_expansion() { - return; - } - if let ExprKind::Let(lt) = expr.kind - && has_is_empty(cx, lt.init) && match lt.pat.kind { PatKind::Slice([], None, []) => true, PatKind::Lit(lit) if is_empty_string(lit) => true, _ => false, } + && !expr.span.from_expansion() + && has_is_empty(cx, lt.init) { let mut applicability = Applicability::MachineApplicable; @@ -190,7 +185,9 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { ); } - if let ExprKind::Binary(Spanned { node: cmp, .. }, left, right) = expr.kind { + if let ExprKind::Binary(Spanned { node: cmp, .. }, left, right) = expr.kind + && !expr.span.from_expansion() + { // expr.span might contains parenthesis, see issue #10529 let actual_span = span_without_enclosing_paren(cx, expr.span); match cmp { diff --git a/src/tools/clippy/clippy_lints/src/let_if_seq.rs b/src/tools/clippy/clippy_lints/src/let_if_seq.rs index a65cb3f4dfb..0e488cee6b7 100644 --- a/src/tools/clippy/clippy_lints/src/let_if_seq.rs +++ b/src/tools/clippy/clippy_lints/src/let_if_seq.rs @@ -58,12 +58,10 @@ declare_lint_pass!(LetIfSeq => [USELESS_LET_IF_SEQ]); impl<'tcx> LateLintPass<'tcx> for LetIfSeq { fn check_block(&mut self, cx: &LateContext<'tcx>, block: &'tcx hir::Block<'_>) { - let mut it = block.stmts.iter().peekable(); - while let Some(stmt) = it.next() { - if let Some(expr) = it.peek() - && let hir::StmtKind::Let(local) = stmt.kind + for [stmt, next] in block.stmts.array_windows::<2>() { + if let hir::StmtKind::Let(local) = stmt.kind && let hir::PatKind::Binding(mode, canonical_id, ident, None) = local.pat.kind - && let hir::StmtKind::Expr(if_) = expr.kind + && let hir::StmtKind::Expr(if_) = next.kind && let hir::ExprKind::If( hir::Expr { kind: hir::ExprKind::DropTemps(cond), diff --git a/src/tools/clippy/clippy_lints/src/let_underscore.rs b/src/tools/clippy/clippy_lints/src/let_underscore.rs index 9fd4f509aa4..8fa63f3e8fd 100644 --- a/src/tools/clippy/clippy_lints/src/let_underscore.rs +++ b/src/tools/clippy/clippy_lints/src/let_underscore.rs @@ -139,9 +139,9 @@ const SYNC_GUARD_PATHS: [&[&str]; 3] = [ impl<'tcx> LateLintPass<'tcx> for LetUnderscore { fn check_local(&mut self, cx: &LateContext<'tcx>, local: &LetStmt<'tcx>) { if matches!(local.source, LocalSource::Normal) - && !in_external_macro(cx.tcx.sess, local.span) && let PatKind::Wild = local.pat.kind && let Some(init) = local.init + && !in_external_macro(cx.tcx.sess, local.span) { let init_ty = cx.typeck_results().expr_ty(init); let contains_sync_guard = init_ty.walk().any(|inner| match inner.unpack() { diff --git a/src/tools/clippy/clippy_lints/src/let_with_type_underscore.rs b/src/tools/clippy/clippy_lints/src/let_with_type_underscore.rs index 593b29154b4..5a11702d7ce 100644 --- a/src/tools/clippy/clippy_lints/src/let_with_type_underscore.rs +++ b/src/tools/clippy/clippy_lints/src/let_with_type_underscore.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_help; -use clippy_utils::source::snippet; +use clippy_utils::is_from_proc_macro; use rustc_hir::{LetStmt, TyKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::lint::in_external_macro; @@ -25,19 +25,14 @@ declare_clippy_lint! { } declare_lint_pass!(UnderscoreTyped => [LET_WITH_TYPE_UNDERSCORE]); -impl LateLintPass<'_> for UnderscoreTyped { - fn check_local(&mut self, cx: &LateContext<'_>, local: &LetStmt<'_>) { - if !in_external_macro(cx.tcx.sess, local.span) - && let Some(ty) = local.ty // Ensure that it has a type defined +impl<'tcx> LateLintPass<'tcx> for UnderscoreTyped { + fn check_local(&mut self, cx: &LateContext<'tcx>, local: &'tcx LetStmt<'_>) { + if let Some(ty) = local.ty // Ensure that it has a type defined && let TyKind::Infer = &ty.kind // that type is '_' && local.span.eq_ctxt(ty.span) + && !in_external_macro(cx.tcx.sess, local.span) + && !is_from_proc_macro(cx, ty) { - // NOTE: Using `is_from_proc_macro` on `init` will require that it's initialized, - // this doesn't. Alternatively, `WithSearchPat` can be implemented for `Ty` - if snippet(cx, ty.span, "_").trim() != "_" { - return; - } - span_lint_and_help( cx, LET_WITH_TYPE_UNDERSCORE, diff --git a/src/tools/clippy/clippy_lints/src/lib.rs b/src/tools/clippy/clippy_lints/src/lib.rs index 32fad0f02ce..c2dc26d6605 100644 --- a/src/tools/clippy/clippy_lints/src/lib.rs +++ b/src/tools/clippy/clippy_lints/src/lib.rs @@ -4,7 +4,9 @@ #![feature(f128)] #![feature(f16)] #![feature(if_let_guard)] +#![feature(is_sorted)] #![feature(iter_intersperse)] +#![feature(iter_partition_in_place)] #![feature(let_chains)] #![cfg_attr(bootstrap, feature(lint_reasons))] #![feature(never_type)] @@ -90,8 +92,10 @@ mod bool_to_int_with_if; mod booleans; mod borrow_deref_ref; mod box_default; +mod byte_char_slices; mod cargo; mod casts; +mod cfg_not_test; mod checked_conversions; mod cognitive_complexity; mod collapsible_if; @@ -212,6 +216,7 @@ mod manual_non_exhaustive; mod manual_range_patterns; mod manual_rem_euclid; mod manual_retain; +mod manual_rotate; mod manual_slice_size_calculation; mod manual_string_new; mod manual_strip; @@ -229,6 +234,7 @@ mod mismatching_type_param_order; mod missing_assert_message; mod missing_asserts_for_indexing; mod missing_const_for_fn; +mod missing_const_for_thread_local; mod missing_doc; mod missing_enforced_import_rename; mod missing_fields_in_debug; @@ -275,9 +281,9 @@ mod only_used_in_recursion; mod operators; mod option_env_unwrap; mod option_if_let_else; -mod overflow_check_conditional; mod panic_in_result_fn; mod panic_unimplemented; +mod panicking_overflow_checks; mod partial_pub_fields; mod partialeq_ne_impl; mod partialeq_to_none; @@ -318,6 +324,7 @@ mod self_named_constructors; mod semicolon_block; mod semicolon_if_nothing_returned; mod serde_api; +mod set_contains_or_insert; mod shadow; mod significant_drop_tightening; mod single_call_fn; @@ -339,7 +346,6 @@ mod swap_ptr_to_ref; mod tabs_in_doc_comments; mod temporary_assignment; mod tests_outside_test_module; -mod thread_local_initializer_can_be_made_const; mod to_digit_is_some; mod to_string_trait_impl; mod trailing_empty_array; @@ -639,9 +645,6 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { }); store.register_early_pass(|| Box::new(utils::internal_lints::produce_ice::ProduceIce)); store.register_late_pass(|_| Box::new(utils::internal_lints::collapsible_calls::CollapsibleCalls)); - store.register_late_pass(|_| { - Box::new(utils::internal_lints::compiler_lint_functions::CompilerLintFunctions::new()) - }); store.register_late_pass(|_| Box::new(utils::internal_lints::invalid_paths::InvalidPaths)); store.register_late_pass(|_| { Box::<utils::internal_lints::interning_defined_symbol::InterningDefinedSymbol>::default() @@ -788,7 +791,7 @@ 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(format::UselessFormat::new(format_args.clone()))); store.register_late_pass(|_| Box::new(swap::Swap)); - store.register_late_pass(|_| Box::new(overflow_check_conditional::OverflowCheckConditional)); + store.register_late_pass(|_| Box::new(panicking_overflow_checks::PanickingOverflowChecks)); store.register_late_pass(|_| Box::<new_without_default::NewWithoutDefault>::default()); store.register_late_pass(move |_| Box::new(disallowed_names::DisallowedNames::new(disallowed_names))); store.register_late_pass(move |_| { @@ -1024,6 +1027,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(|_| Box::new(default_instead_of_iter_empty::DefaultIterEmpty)); store.register_late_pass(move |_| Box::new(manual_rem_euclid::ManualRemEuclid::new(msrv()))); store.register_late_pass(move |_| Box::new(manual_retain::ManualRetain::new(msrv()))); + store.register_late_pass(move |_| Box::new(manual_rotate::ManualRotate)); store.register_late_pass(move |_| { Box::new(operators::Operators::new( verbose_bit_mask_threshold, @@ -1153,9 +1157,8 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { behavior: pub_underscore_fields_behavior, }) }); - store.register_late_pass(move |_| { - Box::new(thread_local_initializer_can_be_made_const::ThreadLocalInitializerCanBeMadeConst::new(msrv())) - }); + store + .register_late_pass(move |_| Box::new(missing_const_for_thread_local::MissingConstForThreadLocal::new(msrv()))); store.register_late_pass(move |_| Box::new(incompatible_msrv::IncompatibleMsrv::new(msrv()))); store.register_late_pass(|_| Box::new(to_string_trait_impl::ToStringTraitImpl)); store.register_early_pass(|| Box::new(multiple_bound_locations::MultipleBoundLocations)); @@ -1171,6 +1174,9 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { }); store.register_late_pass(move |_| Box::new(string_patterns::StringPatterns::new(msrv()))); store.register_early_pass(|| Box::new(field_scoped_visibility_modifiers::FieldScopedVisibilityModifiers)); + store.register_late_pass(|_| Box::new(set_contains_or_insert::HashsetInsertAfterContains)); + store.register_early_pass(|| Box::new(byte_char_slices::ByteCharSlice)); + store.register_early_pass(|| Box::new(cfg_not_test::CfgNotTest)); // add lints here, do not remove this comment, it's used in `new_lint` } diff --git a/src/tools/clippy/clippy_lints/src/literal_representation.rs b/src/tools/clippy/clippy_lints/src/literal_representation.rs index d2a140a36a8..7481543941a 100644 --- a/src/tools/clippy/clippy_lints/src/literal_representation.rs +++ b/src/tools/clippy/clippy_lints/src/literal_representation.rs @@ -233,11 +233,9 @@ impl_lint_pass!(LiteralDigitGrouping => [ impl EarlyLintPass for LiteralDigitGrouping { fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { - if in_external_macro(cx.sess(), expr.span) { - return; - } - - if let ExprKind::Lit(lit) = expr.kind { + if let ExprKind::Lit(lit) = expr.kind + && !in_external_macro(cx.sess(), expr.span) + { self.check_lit(cx, lit, expr.span); } } @@ -448,11 +446,9 @@ impl_lint_pass!(DecimalLiteralRepresentation => [DECIMAL_LITERAL_REPRESENTATION] impl EarlyLintPass for DecimalLiteralRepresentation { fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { - if in_external_macro(cx.sess(), expr.span) { - return; - } - - if let ExprKind::Lit(lit) = expr.kind { + if let ExprKind::Lit(lit) = expr.kind + && !in_external_macro(cx.sess(), expr.span) + { self.check_lit(cx, lit, expr.span); } } diff --git a/src/tools/clippy/clippy_lints/src/manual_bits.rs b/src/tools/clippy/clippy_lints/src/manual_bits.rs index 24fc2b4faea..d9f6be6dc2b 100644 --- a/src/tools/clippy/clippy_lints/src/manual_bits.rs +++ b/src/tools/clippy/clippy_lints/src/manual_bits.rs @@ -50,13 +50,10 @@ impl_lint_pass!(ManualBits => [MANUAL_BITS]); impl<'tcx> LateLintPass<'tcx> for ManualBits { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if !self.msrv.meets(msrvs::MANUAL_BITS) { - return; - } - if let ExprKind::Binary(bin_op, left_expr, right_expr) = expr.kind && let BinOpKind::Mul = &bin_op.node && !in_external_macro(cx.sess(), expr.span) + && self.msrv.meets(msrvs::MANUAL_BITS) && let ctxt = expr.span.ctxt() && left_expr.span.ctxt() == ctxt && right_expr.span.ctxt() == ctxt diff --git a/src/tools/clippy/clippy_lints/src/manual_float_methods.rs b/src/tools/clippy/clippy_lints/src/manual_float_methods.rs index 89eea0b4456..03416ba96de 100644 --- a/src/tools/clippy/clippy_lints/src/manual_float_methods.rs +++ b/src/tools/clippy/clippy_lints/src/manual_float_methods.rs @@ -82,29 +82,26 @@ impl Variant { impl<'tcx> LateLintPass<'tcx> for ManualFloatMethods { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { - if !in_external_macro(cx.sess(), expr.span) - && ( - matches!(cx.tcx.constness(cx.tcx.hir().enclosing_body_owner(expr.hir_id)), Constness::NotConst) - || cx.tcx.features().declared(sym!(const_float_classify)) - ) && let ExprKind::Binary(kind, lhs, rhs) = expr.kind + if let ExprKind::Binary(kind, lhs, rhs) = expr.kind && let ExprKind::Binary(lhs_kind, lhs_lhs, lhs_rhs) = lhs.kind && let ExprKind::Binary(rhs_kind, rhs_lhs, rhs_rhs) = rhs.kind // Checking all possible scenarios using a function would be a hopeless task, as we have // 16 possible alignments of constants/operands. For now, let's use `partition`. - && let (operands, constants) = [lhs_lhs, lhs_rhs, rhs_lhs, rhs_rhs] - .into_iter() - .partition::<Vec<&Expr<'_>>, _>(|i| path_to_local(i).is_some()) - && let [first, second] = &*operands - && let Some([const_1, const_2]) = constants - .into_iter() - .map(|i| constant(cx, cx.typeck_results(), i)) - .collect::<Option<Vec<_>>>() - .as_deref() + && let mut exprs = [lhs_lhs, lhs_rhs, rhs_lhs, rhs_rhs] + && exprs.iter_mut().partition_in_place(|i| path_to_local(i).is_some()) == 2 + && !in_external_macro(cx.sess(), expr.span) + && ( + matches!(cx.tcx.constness(cx.tcx.hir().enclosing_body_owner(expr.hir_id)), Constness::NotConst) + || cx.tcx.features().declared(sym!(const_float_classify)) + ) + && let [first, second, const_1, const_2] = exprs + && let Some(const_1) = constant(cx, cx.typeck_results(), const_1) + && let Some(const_2) = constant(cx, cx.typeck_results(), const_2) && path_to_local(first).is_some_and(|f| path_to_local(second).is_some_and(|s| f == s)) // The actual infinity check, we also allow `NEG_INFINITY` before` INFINITY` just in // case somebody does that for some reason - && (is_infinity(const_1) && is_neg_infinity(const_2) - || is_neg_infinity(const_1) && is_infinity(const_2)) + && (is_infinity(&const_1) && is_neg_infinity(&const_2) + || is_neg_infinity(&const_1) && is_infinity(&const_2)) && let Some(local_snippet) = snippet_opt(cx, first.span) { let variant = match (kind.node, lhs_kind.node, rhs_kind.node) { 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 03e4d668dd8..ebebdf679a8 100644 --- a/src/tools/clippy/clippy_lints/src/manual_let_else.rs +++ b/src/tools/clippy/clippy_lints/src/manual_let_else.rs @@ -49,16 +49,14 @@ declare_clippy_lint! { impl<'tcx> QuestionMark { pub(crate) fn check_manual_let_else(&mut self, cx: &LateContext<'tcx>, stmt: &'tcx Stmt<'tcx>) { - if !self.msrv.meets(msrvs::LET_ELSE) || in_external_macro(cx.sess(), stmt.span) { - return; - } - if let StmtKind::Let(local) = stmt.kind && let Some(init) = local.init && local.els.is_none() && local.ty.is_none() && init.span.eq_ctxt(stmt.span) && let Some(if_let_or_match) = IfLetOrMatch::parse(cx, init) + && self.msrv.meets(msrvs::LET_ELSE) + && !in_external_macro(cx.sess(), stmt.span) { match if_let_or_match { IfLetOrMatch::IfLet(if_let_expr, let_pat, if_then, if_else, ..) => { 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 5732bdda7f2..8e8cdc3fb07 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 @@ -47,13 +47,13 @@ impl_lint_pass!(ManualMainSeparatorStr => [MANUAL_MAIN_SEPARATOR_STR]); impl LateLintPass<'_> for ManualMainSeparatorStr { fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { - if self.msrv.meets(msrvs::PATH_MAIN_SEPARATOR_STR) - && let (target, _) = peel_hir_expr_refs(expr) - && is_trait_method(cx, target, sym::ToString) - && let ExprKind::MethodCall(path, receiver, &[], _) = target.kind + let (target, _) = peel_hir_expr_refs(expr); + if let ExprKind::MethodCall(path, receiver, &[], _) = target.kind && path.ident.name == sym::to_string && let ExprKind::Path(QPath::Resolved(None, path)) = receiver.kind && let Res::Def(DefKind::Const, receiver_def_id) = path.res + && is_trait_method(cx, target, sym::ToString) + && self.msrv.meets(msrvs::PATH_MAIN_SEPARATOR_STR) && match_def_path(cx, receiver_def_id, &paths::PATH_MAIN_SEPARATOR) && let ty::Ref(_, ty, Mutability::Not) = cx.typeck_results().expr_ty_adjusted(expr).kind() && ty.is_str() 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 d2ac0ad8363..73a505fd73f 100644 --- a/src/tools/clippy/clippy_lints/src/manual_non_exhaustive.rs +++ b/src/tools/clippy/clippy_lints/src/manual_non_exhaustive.rs @@ -97,19 +97,15 @@ impl_lint_pass!(ManualNonExhaustiveEnum => [MANUAL_NON_EXHAUSTIVE]); impl EarlyLintPass for ManualNonExhaustiveStruct { fn check_item(&mut self, cx: &EarlyContext<'_>, item: &ast::Item) { - if !self.msrv.meets(msrvs::NON_EXHAUSTIVE) { - return; - } - - if let ast::ItemKind::Struct(variant_data, _) = &item.kind { - let (fields, delimiter) = match variant_data { + 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, - }; - if fields.len() <= 1 { - 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)), 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 ec60de92c4b..07d4abbf5cd 100644 --- a/src/tools/clippy/clippy_lints/src/manual_range_patterns.rs +++ b/src/tools/clippy/clippy_lints/src/manual_range_patterns.rs @@ -76,14 +76,11 @@ impl Num { impl LateLintPass<'_> for ManualRangePatterns { fn check_pat(&mut self, cx: &LateContext<'_>, pat: &'_ rustc_hir::Pat<'_>) { - if in_external_macro(cx.sess(), pat.span) { - return; - } - // a pattern like 1 | 2 seems fine, lint if there are at least 3 alternatives // or at least one range if let PatKind::Or(pats) = pat.kind && (pats.len() >= 3 || pats.iter().any(|p| matches!(p.kind, PatKind::Range(..)))) + && !in_external_macro(cx.sess(), pat.span) { let mut min = Num::dummy(i128::MAX); let mut max = Num::dummy(i128::MIN); 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 ab9bca170cf..b518dc26937 100644 --- a/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs +++ b/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs @@ -48,35 +48,30 @@ impl_lint_pass!(ManualRemEuclid => [MANUAL_REM_EUCLID]); impl<'tcx> LateLintPass<'tcx> for ManualRemEuclid { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if !self.msrv.meets(msrvs::REM_EUCLID) { - return; - } - - if in_constant(cx, expr.hir_id) && !self.msrv.meets(msrvs::REM_EUCLID_CONST) { - return; - } - - if in_external_macro(cx.sess(), expr.span) { - return; - } - // (x % c + c) % c - if let ExprKind::Binary(op1, expr1, right) = expr.kind - && op1.node == BinOpKind::Rem + if let ExprKind::Binary(rem_op, rem_lhs, rem_rhs) = expr.kind + && rem_op.node == BinOpKind::Rem + && let ExprKind::Binary(add_op, add_lhs, add_rhs) = rem_lhs.kind + && add_op.node == BinOpKind::Add && let ctxt = expr.span.ctxt() - && expr1.span.ctxt() == ctxt - && let Some(const1) = check_for_unsigned_int_constant(cx, right) - && let ExprKind::Binary(op2, left, right) = expr1.kind - && op2.node == BinOpKind::Add - && let Some((const2, expr2)) = check_for_either_unsigned_int_constant(cx, left, right) - && expr2.span.ctxt() == ctxt - && let ExprKind::Binary(op3, expr3, right) = expr2.kind - && op3.node == BinOpKind::Rem - && let Some(const3) = check_for_unsigned_int_constant(cx, right) + && rem_lhs.span.ctxt() == ctxt + && rem_rhs.span.ctxt() == ctxt + && add_lhs.span.ctxt() == ctxt + && add_rhs.span.ctxt() == ctxt + && !in_external_macro(cx.sess(), expr.span) + && self.msrv.meets(msrvs::REM_EUCLID) + && (self.msrv.meets(msrvs::REM_EUCLID_CONST) || !in_constant(cx, expr.hir_id)) + && let Some(const1) = check_for_unsigned_int_constant(cx, rem_rhs) + && let Some((const2, add_other)) = check_for_either_unsigned_int_constant(cx, add_lhs, add_rhs) + && let ExprKind::Binary(rem2_op, rem2_lhs, rem2_rhs) = add_other.kind + && rem2_op.node == BinOpKind::Rem + && const1 == const2 + && let Some(hir_id) = path_to_local(rem2_lhs) + && let Some(const3) = check_for_unsigned_int_constant(cx, rem2_rhs) // Also ensures the const is nonzero since zero can't be a divisor - && const1 == const2 && const2 == const3 - && let Some(hir_id) = path_to_local(expr3) - && let Node::Pat(_) = cx.tcx.hir_node(hir_id) + && const2 == const3 + && rem2_lhs.span.ctxt() == ctxt + && rem2_rhs.span.ctxt() == ctxt { // Apply only to params or locals with annotated types match cx.tcx.parent_hir_node(hir_id) { @@ -91,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualRemEuclid { }; let mut app = Applicability::MachineApplicable; - let rem_of = snippet_with_context(cx, expr3.span, ctxt, "_", &mut app).0; + let rem_of = snippet_with_context(cx, rem2_lhs.span, ctxt, "_", &mut app).0; span_lint_and_sugg( cx, MANUAL_REM_EUCLID, diff --git a/src/tools/clippy/clippy_lints/src/manual_retain.rs b/src/tools/clippy/clippy_lints/src/manual_retain.rs index 3ddb06a1e08..8f7b8abd0c3 100644 --- a/src/tools/clippy/clippy_lints/src/manual_retain.rs +++ b/src/tools/clippy/clippy_lints/src/manual_retain.rs @@ -70,9 +70,8 @@ impl_lint_pass!(ManualRetain => [MANUAL_RETAIN]); impl<'tcx> LateLintPass<'tcx> for ManualRetain { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) { if let Assign(left_expr, collect_expr, _) = &expr.kind - && let hir::ExprKind::MethodCall(seg, ..) = &collect_expr.kind + && let hir::ExprKind::MethodCall(seg, target_expr, [], _) = &collect_expr.kind && seg.args.is_none() - && let hir::ExprKind::MethodCall(_, target_expr, [], _) = &collect_expr.kind && let Some(collect_def_id) = cx.typeck_results().type_dependent_def_id(collect_expr.hir_id) && cx.tcx.is_diagnostic_item(sym::iterator_collect_fn, collect_def_id) { diff --git a/src/tools/clippy/clippy_lints/src/manual_rotate.rs b/src/tools/clippy/clippy_lints/src/manual_rotate.rs new file mode 100644 index 00000000000..a517a4d5075 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/manual_rotate.rs @@ -0,0 +1,117 @@ +use std::fmt::Display; + +use clippy_utils::consts::{constant, Constant}; +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::sugg; +use rustc_errors::Applicability; +use rustc_hir::{BinOpKind, Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// + /// It detects manual bit rotations that could be rewritten using standard + /// functions `rotate_left` or `rotate_right`. + /// + /// ### Why is this bad? + /// + /// Calling the function better conveys the intent. + /// + /// ### Known issues + /// + /// Currently, the lint only catches shifts by constant amount. + /// + /// ### Example + /// ```no_run + /// let x = 12345678_u32; + /// let _ = (x >> 8) | (x << 24); + /// ``` + /// Use instead: + /// ```no_run + /// let x = 12345678_u32; + /// let _ = x.rotate_right(8); + /// ``` + #[clippy::version = "1.81.0"] + pub MANUAL_ROTATE, + style, + "using bit shifts to rotate integers" +} + +declare_lint_pass!(ManualRotate => [MANUAL_ROTATE]); + +#[derive(Clone, Copy, Debug, PartialEq, Eq)] +enum ShiftDirection { + Left, + Right, +} + +impl Display for ShiftDirection { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + f.write_str(match self { + Self::Left => "rotate_left", + Self::Right => "rotate_right", + }) + } +} + +fn parse_shift<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, +) -> Option<(ShiftDirection, u128, &'tcx Expr<'tcx>)> { + if let ExprKind::Binary(op, l, r) = expr.kind { + let dir = match op.node { + BinOpKind::Shl => ShiftDirection::Left, + BinOpKind::Shr => ShiftDirection::Right, + _ => return None, + }; + let const_expr = constant(cx, cx.typeck_results(), r)?; + if let Constant::Int(shift) = const_expr { + return Some((dir, shift, l)); + } + } + None +} + +impl LateLintPass<'_> for ManualRotate { + fn check_expr<'tcx>(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'tcx>) { + if let ExprKind::Binary(op, l, r) = expr.kind + && let BinOpKind::Add | BinOpKind::BitOr = op.node + && let Some((l_shift_dir, l_amount, l_expr)) = parse_shift(cx, l) + && let Some((r_shift_dir, r_amount, r_expr)) = parse_shift(cx, r) + { + if l_shift_dir == r_shift_dir { + return; + } + if !clippy_utils::eq_expr_value(cx, l_expr, r_expr) { + return; + } + let Some(bit_width) = (match cx.typeck_results().expr_ty(expr).kind() { + ty::Int(itype) => itype.bit_width(), + ty::Uint(itype) => itype.bit_width(), + _ => return, + }) else { + return; + }; + if l_amount + r_amount == u128::from(bit_width) { + let (shift_function, amount) = if l_amount < r_amount { + (l_shift_dir, l_amount) + } else { + (r_shift_dir, r_amount) + }; + let mut applicability = Applicability::MachineApplicable; + let expr_sugg = sugg::Sugg::hir_with_applicability(cx, l_expr, "_", &mut applicability).maybe_par(); + span_lint_and_sugg( + cx, + MANUAL_ROTATE, + expr.span, + "there is no need to manually implement bit rotation", + "this expression can be rewritten as", + format!("{expr_sugg}.{shift_function}({amount})"), + Applicability::MachineApplicable, + ); + } + } + } +} diff --git a/src/tools/clippy/clippy_lints/src/manual_slice_size_calculation.rs b/src/tools/clippy/clippy_lints/src/manual_slice_size_calculation.rs index 1de686dbcb5..429ee2637c2 100644 --- a/src/tools/clippy/clippy_lints/src/manual_slice_size_calculation.rs +++ b/src/tools/clippy/clippy_lints/src/manual_slice_size_calculation.rs @@ -40,11 +40,11 @@ declare_lint_pass!(ManualSliceSizeCalculation => [MANUAL_SLICE_SIZE_CALCULATION] impl<'tcx> LateLintPass<'tcx> for ManualSliceSizeCalculation { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { - // Does not apply inside const because size_of_val is not cost in stable. - if !in_constant(cx, expr.hir_id) - && let ExprKind::Binary(ref op, left, right) = expr.kind + if let ExprKind::Binary(ref op, left, right) = expr.kind && BinOpKind::Mul == op.node && !expr.span.from_expansion() + // Does not apply inside const because size_of_val is not cost in stable. + && !in_constant(cx, expr.hir_id) && let Some(receiver) = simplify(cx, left, right) { let ctxt = expr.span.ctxt(); diff --git a/src/tools/clippy/clippy_lints/src/manual_strip.rs b/src/tools/clippy/clippy_lints/src/manual_strip.rs index 45af9f07718..6a523ad1564 100644 --- a/src/tools/clippy/clippy_lints/src/manual_strip.rs +++ b/src/tools/clippy/clippy_lints/src/manual_strip.rs @@ -66,14 +66,11 @@ enum StripKind { impl<'tcx> LateLintPass<'tcx> for ManualStrip { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if !self.msrv.meets(msrvs::STR_STRIP_PREFIX) { - return; - } - if let Some(higher::If { cond, then, .. }) = higher::If::hir(expr) && let ExprKind::MethodCall(_, target_arg, [pattern], _) = cond.kind - && let Some(method_def_id) = cx.typeck_results().type_dependent_def_id(cond.hir_id) && let ExprKind::Path(target_path) = &target_arg.kind + && self.msrv.meets(msrvs::STR_STRIP_PREFIX) + && let Some(method_def_id) = cx.typeck_results().type_dependent_def_id(cond.hir_id) { let strip_kind = if match_def_path(cx, method_def_id, &paths::STR_STARTS_WITH) { StripKind::Prefix diff --git a/src/tools/clippy/clippy_lints/src/manual_unwrap_or_default.rs b/src/tools/clippy/clippy_lints/src/manual_unwrap_or_default.rs index 58b2ebebbf0..f1acc4b2174 100644 --- a/src/tools/clippy/clippy_lints/src/manual_unwrap_or_default.rs +++ b/src/tools/clippy/clippy_lints/src/manual_unwrap_or_default.rs @@ -172,11 +172,10 @@ fn handle<'tcx>(cx: &LateContext<'tcx>, if_let_or_match: IfLetOrMatch<'tcx>, exp impl<'tcx> LateLintPass<'tcx> for ManualUnwrapOrDefault { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { - if expr.span.from_expansion() || in_constant(cx, expr.hir_id) { - return; - } - // Call handle only if the expression is `if let` or `match` - if let Some(if_let_or_match) = IfLetOrMatch::parse(cx, expr) { + if let Some(if_let_or_match) = IfLetOrMatch::parse(cx, expr) + && !expr.span.from_expansion() + && !in_constant(cx, expr.hir_id) + { handle(cx, if_let_or_match, expr); } } 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 9db04b615be..2db71b1f7a3 100644 --- a/src/tools/clippy/clippy_lints/src/map_unit_fn.rs +++ b/src/tools/clippy/clippy_lints/src/map_unit_fn.rs @@ -253,14 +253,11 @@ fn lint_map_unit_fn( impl<'tcx> LateLintPass<'tcx> for MapUnit { fn check_stmt(&mut self, cx: &LateContext<'_>, stmt: &hir::Stmt<'_>) { - if stmt.span.from_expansion() { - return; - } - - if let hir::StmtKind::Semi(expr) = stmt.kind { - if let Some(arglists) = method_chain_args(expr, &["map"]) { - lint_map_unit_fn(cx, stmt, expr, arglists[0]); - } + if let hir::StmtKind::Semi(expr) = stmt.kind + && !stmt.span.from_expansion() + && let Some(arglists) = method_chain_args(expr, &["map"]) + { + lint_map_unit_fn(cx, stmt, expr, arglists[0]); } } } diff --git a/src/tools/clippy/clippy_lints/src/matches/mod.rs b/src/tools/clippy/clippy_lints/src/matches/mod.rs index bf7156cc53e..22a299ae3d8 100644 --- a/src/tools/clippy/clippy_lints/src/matches/mod.rs +++ b/src/tools/clippy/clippy_lints/src/matches/mod.rs @@ -1019,6 +1019,7 @@ impl_lint_pass!(Matches => [ ]); impl<'tcx> LateLintPass<'tcx> for Matches { + #[expect(clippy::too_many_lines)] fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { if is_direct_expn_of(expr.span, "matches").is_none() && in_external_macro(cx.sess(), expr.span) { return; @@ -1037,7 +1038,7 @@ impl<'tcx> LateLintPass<'tcx> for Matches { return; } if matches!(source, MatchSource::Normal | MatchSource::ForLoopDesugar) { - significant_drop_in_scrutinee::check(cx, expr, ex, arms, source); + significant_drop_in_scrutinee::check_match(cx, expr, ex, arms, source); } collapsible_match::check_match(cx, arms, &self.msrv); @@ -1084,6 +1085,7 @@ impl<'tcx> LateLintPass<'tcx> for Matches { } } else if let Some(if_let) = higher::IfLet::hir(cx, expr) { collapsible_match::check_if_let(cx, if_let.let_pat, if_let.if_then, if_let.if_else, &self.msrv); + significant_drop_in_scrutinee::check_if_let(cx, expr, if_let.let_expr, if_let.if_then, if_let.if_else); if !from_expansion { if let Some(else_expr) = if_let.if_else { if self.msrv.meets(msrvs::MATCHES_MACRO) { @@ -1126,8 +1128,13 @@ impl<'tcx> LateLintPass<'tcx> for Matches { ); needless_match::check_if_let(cx, expr, &if_let); } - } else if !from_expansion { - redundant_pattern_match::check(cx, expr); + } else { + if let Some(while_let) = higher::WhileLet::hir(expr) { + significant_drop_in_scrutinee::check_while_let(cx, expr, while_let.let_expr, while_let.if_then); + } + if !from_expansion { + redundant_pattern_match::check(cx, expr); + } } } 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 2f72e59834f..9047c9627d9 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 @@ -16,7 +16,7 @@ use rustc_span::Span; use super::SIGNIFICANT_DROP_IN_SCRUTINEE; -pub(super) fn check<'tcx>( +pub(super) fn check_match<'tcx>( cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, scrutinee: &'tcx Expr<'_>, @@ -27,10 +27,89 @@ pub(super) fn check<'tcx>( return; } - let (suggestions, message) = has_significant_drop_in_scrutinee(cx, scrutinee, source); + let scrutinee = match (source, &scrutinee.kind) { + (MatchSource::ForLoopDesugar, ExprKind::Call(_, [e])) => e, + _ => scrutinee, + }; + + let message = if source == MatchSource::Normal { + "temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression" + } else { + "temporary with significant `Drop` in `for` loop condition will live until the end of the `for` expression" + }; + + let arms = arms.iter().map(|arm| arm.body).collect::<Vec<_>>(); + + check(cx, expr, scrutinee, &arms, message, Suggestion::Emit); +} + +pub(super) fn check_if_let<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + scrutinee: &'tcx Expr<'_>, + if_then: &'tcx Expr<'_>, + if_else: Option<&'tcx Expr<'_>>, +) { + if is_lint_allowed(cx, SIGNIFICANT_DROP_IN_SCRUTINEE, expr.hir_id) { + return; + } + + let message = + "temporary with significant `Drop` in `if let` scrutinee will live until the end of the `if let` expression"; + + if let Some(if_else) = if_else { + check(cx, expr, scrutinee, &[if_then, if_else], message, Suggestion::Emit); + } else { + check(cx, expr, scrutinee, &[if_then], message, Suggestion::Emit); + } +} + +pub(super) fn check_while_let<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + scrutinee: &'tcx Expr<'_>, + body: &'tcx Expr<'_>, +) { + if is_lint_allowed(cx, SIGNIFICANT_DROP_IN_SCRUTINEE, expr.hir_id) { + return; + } + + check( + cx, + expr, + scrutinee, + &[body], + "temporary with significant `Drop` in `while let` scrutinee will live until the end of the `while let` expression", + // Don't emit wrong suggestions: We cannot fix the significant drop in the `while let` scrutinee by simply + // moving it out. We need to change the `while` to a `loop` instead. + Suggestion::DontEmit, + ); +} + +#[derive(Copy, Clone, Debug)] +enum Suggestion { + Emit, + DontEmit, +} + +fn check<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + scrutinee: &'tcx Expr<'_>, + arms: &[&'tcx Expr<'_>], + message: &'static str, + sugg: Suggestion, +) { + let mut helper = SigDropHelper::new(cx); + let suggestions = helper.find_sig_drop(scrutinee); + for found in suggestions { span_lint_and_then(cx, SIGNIFICANT_DROP_IN_SCRUTINEE, found.found_span, message, |diag| { - set_diagnostic(diag, cx, expr, found); + match sugg { + Suggestion::Emit => set_suggestion(diag, cx, expr, found), + Suggestion::DontEmit => (), + } + let s = Span::new(expr.span.hi(), expr.span.hi(), expr.span.ctxt(), None); diag.span_label(s, "temporary lives until here"); for span in has_significant_drop_in_arms(cx, arms) { @@ -41,7 +120,7 @@ pub(super) fn check<'tcx>( } } -fn set_diagnostic<'tcx>(diag: &mut Diag<'_, ()>, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, found: FoundSigDrop) { +fn set_suggestion<'tcx>(diag: &mut Diag<'_, ()>, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, found: FoundSigDrop) { let original = snippet(cx, found.found_span, ".."); let trailing_indent = " ".repeat(indent_of(cx, found.found_span).unwrap_or(0)); @@ -79,26 +158,6 @@ fn set_diagnostic<'tcx>(diag: &mut Diag<'_, ()>, cx: &LateContext<'tcx>, expr: & ); } -/// If the expression is an `ExprKind::Match`, check if the scrutinee has a significant drop that -/// may have a surprising lifetime. -fn has_significant_drop_in_scrutinee<'tcx>( - cx: &LateContext<'tcx>, - scrutinee: &'tcx Expr<'tcx>, - source: MatchSource, -) -> (Vec<FoundSigDrop>, &'static str) { - let mut helper = SigDropHelper::new(cx); - let scrutinee = match (source, &scrutinee.kind) { - (MatchSource::ForLoopDesugar, ExprKind::Call(_, [e])) => e, - _ => scrutinee, - }; - let message = if source == MatchSource::Normal { - "temporary with significant `Drop` in `match` scrutinee will live until the end of the `match` expression" - } else { - "temporary with significant `Drop` in `for` loop condition will live until the end of the `for` expression" - }; - (helper.find_sig_drop(scrutinee), message) -} - struct SigDropChecker<'a, 'tcx> { seen_types: FxHashSet<Ty<'tcx>>, cx: &'a LateContext<'tcx>, @@ -428,10 +487,10 @@ impl<'a, 'tcx> ArmSigDropHelper<'a, 'tcx> { } } -fn has_significant_drop_in_arms<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>]) -> FxHashSet<Span> { +fn has_significant_drop_in_arms<'tcx>(cx: &LateContext<'tcx>, arms: &[&'tcx Expr<'_>]) -> FxHashSet<Span> { let mut helper = ArmSigDropHelper::new(cx); for arm in arms { - helper.visit_expr(arm.body); + helper.visit_expr(arm); } helper.found_sig_drop_spans } 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 e3ce64c246a..cac2e11f591 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_inspect.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_inspect.rs @@ -167,14 +167,12 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arg: &Expr<'_>, name: } else { edits.extend(addr_of_edits); } - edits.push(( - name_span, - String::from(match name { - "map" => "inspect", - "map_err" => "inspect_err", - _ => return, - }), - )); + let edit = match name { + "map" => "inspect", + "map_err" => "inspect_err", + _ => return, + }; + edits.push((name_span, edit.to_string())); edits.push(( final_expr .span @@ -187,9 +185,15 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arg: &Expr<'_>, name: } else { Applicability::MachineApplicable }; - span_lint_and_then(cx, MANUAL_INSPECT, name_span, "", |diag| { - diag.multipart_suggestion("try", edits, app); - }); + span_lint_and_then( + cx, + MANUAL_INSPECT, + name_span, + format!("using `{name}` over `{edit}`"), + |diag| { + diag.multipart_suggestion("try", edits, app); + }, + ); } } } diff --git a/src/tools/clippy/clippy_lints/src/methods/mod.rs b/src/tools/clippy/clippy_lints/src/methods/mod.rs index 1408f454820..a846552cddf 100644 --- a/src/tools/clippy/clippy_lints/src/methods/mod.rs +++ b/src/tools/clippy/clippy_lints/src/methods/mod.rs @@ -628,12 +628,11 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for usage of `_.and_then(|x| Some(y))`, `_.and_then(|x| Ok(y))` or - /// `_.or_else(|x| Err(y))`. + /// Checks for usage of `_.and_then(|x| Some(y))`, `_.and_then(|x| Ok(y))` + /// or `_.or_else(|x| Err(y))`. /// /// ### Why is this bad? - /// Readability, this can be written more concisely as - /// `_.map(|x| y)` or `_.map_err(|x| y)`. + /// This can be written more concisely as `_.map(|x| y)` or `_.map_err(|x| y)`. /// /// ### Example /// ```no_run @@ -4121,7 +4120,7 @@ declare_clippy_lint! { /// ```no_run /// let x = Some(0).inspect(|x| println!("{x}")); /// ``` - #[clippy::version = "1.78.0"] + #[clippy::version = "1.81.0"] pub MANUAL_INSPECT, complexity, "use of `map` returning the original item" 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 ae9aa83efd6..5d899415d77 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 @@ -1,13 +1,15 @@ 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; -use clippy_utils::source::snippet_opt; +use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::source::{snippet, snippet_opt}; use clippy_utils::ty::{ get_iterator_item_ty, implements_trait, is_copy, is_type_diagnostic_item, is_type_lang_item, peel_mid_ty_refs, }; 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, return_ty}; +use clippy_utils::{ + fn_def_id, get_parent_expr, is_diag_item_method, is_diag_trait_item, match_def_path, paths, return_ty, +}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; @@ -52,6 +54,9 @@ pub fn check<'tcx>( if check_into_iter_call_arg(cx, expr, method_name, receiver, msrv) { return; } + if check_string_from_utf8(cx, expr, receiver) { + return; + } check_other_call_arg(cx, expr, method_name, receiver); } } else { @@ -240,6 +245,65 @@ fn check_into_iter_call_arg( false } +/// Checks for `&String::from_utf8(bytes.{to_vec,to_owned,...}()).unwrap()` coercing to `&str`, +/// which can be written as just `std::str::from_utf8(bytes).unwrap()`. +fn check_string_from_utf8<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, receiver: &'tcx Expr<'tcx>) -> bool { + if let Some((call, arg)) = skip_addr_of_ancestors(cx, expr) + && !arg.span.from_expansion() + && let ExprKind::Call(callee, _) = call.kind + && fn_def_id(cx, call).is_some_and(|did| match_def_path(cx, did, &paths::STRING_FROM_UTF8)) + && let Some(unwrap_call) = get_parent_expr(cx, call) + && let ExprKind::MethodCall(unwrap_method_name, ..) = unwrap_call.kind + && matches!(unwrap_method_name.ident.name, sym::unwrap | sym::expect) + && let Some(ref_string) = get_parent_expr(cx, unwrap_call) + && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, _) = ref_string.kind + && let adjusted_ty = cx.typeck_results().expr_ty_adjusted(ref_string) + // `&...` creates a `&String`, so only actually lint if this coerces to a `&str` + && matches!(adjusted_ty.kind(), ty::Ref(_, ty, _) if ty.is_str()) + { + span_lint_and_then( + cx, + UNNECESSARY_TO_OWNED, + ref_string.span, + "allocating a new `String` only to create a temporary `&str` from it", + |diag| { + let arg_suggestion = format!( + "{borrow}{recv_snippet}", + recv_snippet = snippet(cx, receiver.span.source_callsite(), ".."), + borrow = if cx.typeck_results().expr_ty(receiver).is_ref() { + "" + } else { + // If not already a reference, prefix with a borrow so that it can coerce to one + "&" + } + ); + + diag.multipart_suggestion( + "convert from `&[u8]` to `&str` directly", + vec![ + // `&String::from_utf8(bytes.to_vec()).unwrap()` + // ^^^^^^^^^^^^^^^^^ + (callee.span, "core::str::from_utf8".into()), + // `&String::from_utf8(bytes.to_vec()).unwrap()` + // ^ + ( + ref_string.span.shrink_to_lo().to(unwrap_call.span.shrink_to_lo()), + String::new(), + ), + // `&String::from_utf8(bytes.to_vec()).unwrap()` + // ^^^^^^^^^^^^^^ + (arg.span, arg_suggestion), + ], + Applicability::MachineApplicable, + ); + }, + ); + true + } else { + false + } +} + /// Checks whether `expr` is an argument in an `into_iter` call and, if so, determines whether its /// call of a `to_owned`-like function is unnecessary. fn check_split_call_arg(cx: &LateContext<'_>, expr: &Expr<'_>, method_name: Symbol, receiver: &Expr<'_>) -> bool { diff --git a/src/tools/clippy/clippy_lints/src/methods/unwrap_expect_used.rs b/src/tools/clippy/clippy_lints/src/methods/unwrap_expect_used.rs index 516b8984ad7..5b0bd0f716a 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unwrap_expect_used.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unwrap_expect_used.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::{is_never_like, is_type_diagnostic_item}; -use clippy_utils::{is_in_cfg_test, is_in_test_function, is_lint_allowed}; +use clippy_utils::{is_in_test, is_lint_allowed}; use rustc_hir::Expr; use rustc_lint::{LateContext, Lint}; use rustc_middle::ty; @@ -61,7 +61,7 @@ pub(super) fn check( let method_suffix = if is_err { "_err" } else { "" }; - if allow_unwrap_in_tests && (is_in_test_function(cx.tcx, expr.hir_id) || is_in_cfg_test(cx.tcx, expr.hir_id)) { + if allow_unwrap_in_tests && is_in_test(cx.tcx, expr.hir_id) { return; } diff --git a/src/tools/clippy/clippy_lints/src/minmax.rs b/src/tools/clippy/clippy_lints/src/minmax.rs index fca626fa5c3..c3fbca1d560 100644 --- a/src/tools/clippy/clippy_lints/src/minmax.rs +++ b/src/tools/clippy/clippy_lints/src/minmax.rs @@ -5,7 +5,7 @@ use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::sym; -use std::cmp::Ordering; +use std::cmp::Ordering::{Equal, Greater, Less}; declare_clippy_lint! { /// ### What it does @@ -36,26 +36,21 @@ declare_lint_pass!(MinMaxPass => [MIN_MAX]); impl<'tcx> LateLintPass<'tcx> for MinMaxPass { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if let Some((outer_max, outer_c, oe)) = min_max(cx, expr) { - if let Some((inner_max, inner_c, ie)) = min_max(cx, oe) { - if outer_max == inner_max { - return; - } - match ( - outer_max, - Constant::partial_cmp(cx.tcx, cx.typeck_results().expr_ty(ie), &outer_c, &inner_c), - ) { - (_, None) | (MinMax::Max, Some(Ordering::Less)) | (MinMax::Min, Some(Ordering::Greater)) => (), - _ => { - span_lint( - cx, - MIN_MAX, - expr.span, - "this `min`/`max` combination leads to constant result", - ); - }, - } - } + if let Some((outer_max, outer_c, oe)) = min_max(cx, expr) + && let Some((inner_max, inner_c, ie)) = min_max(cx, oe) + && outer_max != inner_max + && let Some(ord) = Constant::partial_cmp(cx.tcx, cx.typeck_results().expr_ty(ie), &outer_c, &inner_c) + && matches!( + (outer_max, ord), + (MinMax::Max, Equal | Greater) | (MinMax::Min, Equal | Less) + ) + { + span_lint( + cx, + MIN_MAX, + expr.span, + "this `min`/`max` combination leads to constant result", + ); } } } diff --git a/src/tools/clippy/clippy_lints/src/misc.rs b/src/tools/clippy/clippy_lints/src/misc.rs index f3f9bf11a61..32c8731c537 100644 --- a/src/tools/clippy/clippy_lints/src/misc.rs +++ b/src/tools/clippy/clippy_lints/src/misc.rs @@ -2,8 +2,8 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then, span_lint_hir_and use clippy_utils::source::{snippet, snippet_with_context}; use clippy_utils::sugg::Sugg; use clippy_utils::{ - any_parent_is_automatically_derived, fulfill_or_allowed, get_parent_expr, is_lint_allowed, iter_input_pats, - last_path_segment, SpanlessEq, + fulfill_or_allowed, get_parent_expr, in_automatically_derived, is_lint_allowed, iter_input_pats, last_path_segment, + SpanlessEq, }; use rustc_errors::Applicability; use rustc_hir::def::Res; @@ -206,7 +206,7 @@ impl<'tcx> LateLintPass<'tcx> for LintPass { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { if in_external_macro(cx.sess(), expr.span) || expr.span.desugaring_kind().is_some() - || any_parent_is_automatically_derived(cx.tcx, expr.hir_id) + || in_automatically_derived(cx.tcx, expr.hir_id) { return; } 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 dd98352da86..935ed48dacc 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_help; +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::{is_in_cfg_test, is_in_test_function}; use rustc_hir::Expr; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; @@ -62,7 +62,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingAssertMessage { }; // This lint would be very noisy in tests, so just ignore if we're in test context - if is_in_test_function(cx.tcx, expr.hir_id) || is_in_cfg_test(cx.tcx, expr.hir_id) { + if is_in_test(cx.tcx, expr.hir_id) { return; } 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 bb0d714a31f..ed5f46ddc8d 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 @@ -8,9 +8,11 @@ use rustc_hir::intravisit::FnKind; use rustc_hir::{self as hir, Body, Constness, FnDecl, GenericParamKind}; 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_target::spec::abi::Abi; declare_clippy_lint! { /// ### What it does @@ -115,7 +117,10 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn { .iter() .any(|param| matches!(param.kind, GenericParamKind::Const { .. })); - if already_const(header) || has_const_generic_params { + if already_const(header) + || has_const_generic_params + || !could_be_const_with_abi(cx, &self.msrv, header.abi) + { return; } }, @@ -127,6 +132,10 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn { FnKind::Closure => return, } + if fn_inputs_has_impl_trait_ty(cx, def_id) { + return; + } + let hir_id = cx.tcx.local_def_id_to_hir_id(def_id); // Const fns are not allowed as methods in a trait. @@ -171,3 +180,25 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn { fn already_const(header: hir::FnHeader) -> bool { header.constness == Constness::Const } + +fn could_be_const_with_abi(cx: &LateContext<'_>, msrv: &Msrv, abi: Abi) -> bool { + match abi { + Abi::Rust => true, + // `const extern "C"` was stablized after 1.62.0 + Abi::C { unwind: false } => msrv.meets(msrvs::CONST_EXTERN_FN), + // Rest ABIs are still unstable and need the `const_extern_fn` feature enabled. + _ => cx.tcx.features().const_extern_fn, + } +} + +/// Return `true` when the given `def_id` is a function that has `impl Trait` ty as one of +/// its parameter types. +fn fn_inputs_has_impl_trait_ty(cx: &LateContext<'_>, def_id: LocalDefId) -> bool { + let inputs = cx.tcx.fn_sig(def_id).instantiate_identity().inputs().skip_binder(); + inputs.iter().any(|input| { + matches!( + input.kind(), + ty::Alias(ty::AliasTyKind::Weak, alias_ty) if cx.tcx.type_of(alias_ty.def_id).skip_binder().is_impl_trait() + ) + }) +} diff --git a/src/tools/clippy/clippy_lints/src/thread_local_initializer_can_be_made_const.rs b/src/tools/clippy/clippy_lints/src/missing_const_for_thread_local.rs index 4af3ee74d0e..ab1b4aa3dee 100644 --- a/src/tools/clippy/clippy_lints/src/thread_local_initializer_can_be_made_const.rs +++ b/src/tools/clippy/clippy_lints/src/missing_const_for_thread_local.rs @@ -39,23 +39,23 @@ declare_clippy_lint! { /// } /// ``` #[clippy::version = "1.77.0"] - pub THREAD_LOCAL_INITIALIZER_CAN_BE_MADE_CONST, + pub MISSING_CONST_FOR_THREAD_LOCAL, perf, "suggest using `const` in `thread_local!` macro" } -pub struct ThreadLocalInitializerCanBeMadeConst { +pub struct MissingConstForThreadLocal { msrv: Msrv, } -impl ThreadLocalInitializerCanBeMadeConst { +impl MissingConstForThreadLocal { #[must_use] pub fn new(msrv: Msrv) -> Self { Self { msrv } } } -impl_lint_pass!(ThreadLocalInitializerCanBeMadeConst => [THREAD_LOCAL_INITIALIZER_CAN_BE_MADE_CONST]); +impl_lint_pass!(MissingConstForThreadLocal => [MISSING_CONST_FOR_THREAD_LOCAL]); #[inline] fn is_thread_local_initializer( @@ -102,7 +102,7 @@ fn initializer_can_be_made_const(cx: &LateContext<'_>, defid: rustc_span::def_id false } -impl<'tcx> LateLintPass<'tcx> for ThreadLocalInitializerCanBeMadeConst { +impl<'tcx> LateLintPass<'tcx> for MissingConstForThreadLocal { fn check_fn( &mut self, cx: &LateContext<'tcx>, @@ -113,7 +113,7 @@ impl<'tcx> LateLintPass<'tcx> for ThreadLocalInitializerCanBeMadeConst { local_defid: rustc_span::def_id::LocalDefId, ) { let defid = local_defid.to_def_id(); - if self.msrv.meets(msrvs::THREAD_LOCAL_INITIALIZER_CAN_BE_MADE_CONST) + if self.msrv.meets(msrvs::THREAD_LOCAL_CONST_INIT) && is_thread_local_initializer(cx, fn_kind, span).unwrap_or(false) // Some implementations of `thread_local!` include an initializer fn. // In the case of a const initializer, the init fn is also const, @@ -139,7 +139,7 @@ impl<'tcx> LateLintPass<'tcx> for ThreadLocalInitializerCanBeMadeConst { { span_lint_and_sugg( cx, - THREAD_LOCAL_INITIALIZER_CAN_BE_MADE_CONST, + MISSING_CONST_FOR_THREAD_LOCAL, unpeeled.span, "initializer for `thread_local` value can be made `const`", "replace with", 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 57ba0da5331..5ffd41d78e0 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 @@ -27,7 +27,7 @@ declare_clippy_lint! { /// Check if a `&mut` function argument is actually used mutably. /// /// Be careful if the function is publicly reexported as it would break compatibility with - /// users of this function. + /// users of this function, when the users pass this function as an argument. /// /// ### Why is this bad? /// Less `mut` means less fights with the borrow checker. It can also lead to more @@ -138,6 +138,10 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByRefMut<'tcx> { return; } + if self.avoid_breaking_exported_api && cx.effective_visibilities.is_exported(fn_def_id) { + return; + } + let hir_id = cx.tcx.local_def_id_to_hir_id(fn_def_id); let is_async = match kind { FnKind::ItemFn(.., header) => { @@ -262,9 +266,6 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByRefMut<'tcx> { .iter() .filter(|(def_id, _)| !self.used_fn_def_ids.contains(def_id)) { - let show_semver_warning = - self.avoid_breaking_exported_api && cx.effective_visibilities.is_exported(*fn_def_id); - let mut is_cfged = None; for input in unused { // If the argument is never used mutably, we emit the warning. @@ -284,7 +285,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByRefMut<'tcx> { format!("&{}", snippet(cx, cx.tcx.hir().span(inner_ty.ty.hir_id), "_"),), Applicability::Unspecified, ); - if show_semver_warning { + if cx.effective_visibilities.is_exported(*fn_def_id) { diag.warn("changing this function will impact semver compatibility"); } if *is_cfged { diff --git a/src/tools/clippy/clippy_lints/src/no_effect.rs b/src/tools/clippy/clippy_lints/src/no_effect.rs index 87f886b1128..0ecfa7baa72 100644 --- a/src/tools/clippy/clippy_lints/src/no_effect.rs +++ b/src/tools/clippy/clippy_lints/src/no_effect.rs @@ -1,7 +1,9 @@ use clippy_utils::diagnostics::{span_lint_hir, span_lint_hir_and_then}; use clippy_utils::source::snippet_opt; use clippy_utils::ty::has_drop; -use clippy_utils::{any_parent_is_automatically_derived, is_lint_allowed, path_to_local, peel_blocks}; +use clippy_utils::{ + in_automatically_derived, is_inside_always_const_context, is_lint_allowed, path_to_local, peel_blocks, +}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{ @@ -185,7 +187,7 @@ impl NoEffect { && has_no_effect(cx, init) && let PatKind::Binding(_, hir_id, ident, _) = local.pat.kind && ident.name.to_ident_string().starts_with('_') - && !any_parent_is_automatically_derived(cx.tcx, local.hir_id) + && !in_automatically_derived(cx.tcx, local.hir_id) { if let Some(l) = self.local_bindings.last_mut() { l.push(hir_id); @@ -258,13 +260,16 @@ fn has_no_effect(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { fn check_unnecessary_operation(cx: &LateContext<'_>, stmt: &Stmt<'_>) { if let StmtKind::Semi(expr) = stmt.kind + && !in_external_macro(cx.sess(), stmt.span) && let ctxt = stmt.span.ctxt() && expr.span.ctxt() == ctxt && let Some(reduced) = reduce_expression(cx, expr) - && !in_external_macro(cx.sess(), stmt.span) && reduced.iter().all(|e| e.span.ctxt() == ctxt) { if let ExprKind::Index(..) = &expr.kind { + if is_inside_always_const_context(cx.tcx, expr.hir_id) { + return; + } let snippet = if let (Some(arr), Some(func)) = (snippet_opt(cx, reduced[0].span), snippet_opt(cx, reduced[1].span)) { format!("assert!({}.len() > {});", &arr, &func) diff --git a/src/tools/clippy/clippy_lints/src/operators/float_cmp.rs b/src/tools/clippy/clippy_lints/src/operators/float_cmp.rs index faab79de9d3..0e5b440c50f 100644 --- a/src/tools/clippy/clippy_lints/src/operators/float_cmp.rs +++ b/src/tools/clippy/clippy_lints/src/operators/float_cmp.rs @@ -57,7 +57,6 @@ pub(crate) fn check<'tcx>( Applicability::HasPlaceholders, // snippet ); } - diag.note("`f32::EPSILON` and `f64::EPSILON` are available for the `error_margin`"); }); } } diff --git a/src/tools/clippy/clippy_lints/src/operators/mod.rs b/src/tools/clippy/clippy_lints/src/operators/mod.rs index 48a442705b2..59834781a58 100644 --- a/src/tools/clippy/clippy_lints/src/operators/mod.rs +++ b/src/tools/clippy/clippy_lints/src/operators/mod.rs @@ -242,6 +242,13 @@ declare_clippy_lint! { /// # let x = 1; /// if (x | 1 > 3) { } /// ``` + /// + /// Use instead: + /// + /// ```no_run + /// # let x = 1; + /// if (x >= 2) { } + /// ``` #[clippy::version = "pre 1.29.0"] pub INEFFECTIVE_BIT_MASK, correctness, @@ -265,6 +272,13 @@ declare_clippy_lint! { /// # let x = 1; /// if x & 0b1111 == 0 { } /// ``` + /// + /// Use instead: + /// + /// ```no_run + /// # let x: i32 = 1; + /// if x.trailing_zeros() > 4 { } + /// ``` #[clippy::version = "pre 1.29.0"] pub VERBOSE_BIT_MASK, pedantic, @@ -560,74 +574,128 @@ declare_clippy_lint! { /// implement equality for a type involving floats). /// /// ### Why is this bad? - /// Floating point calculations are usually imprecise, so - /// asking if two values are *exactly* equal is asking for trouble. For a good - /// guide on what to do, see [the floating point - /// guide](http://www.floating-point-gui.de/errors/comparison). + /// Floating point calculations are usually imprecise, so asking if two values are *exactly* + /// equal is asking for trouble because arriving at the same logical result via different + /// routes (e.g. calculation versus constant) may yield different values. /// /// ### Example + /// /// ```no_run - /// let x = 1.2331f64; - /// let y = 1.2332f64; + /// let a: f64 = 1000.1; + /// let b: f64 = 0.2; + /// let x = a + b; + /// let y = 1000.3; // Expected value. /// - /// if y == 1.23f64 { } - /// if y != x {} // where both are floats + /// // Actual value: 1000.3000000000001 + /// println!("{x}"); + /// + /// let are_equal = x == y; + /// println!("{are_equal}"); // false /// ``` /// - /// Use instead: + /// The correct way to compare floating point numbers is to define an allowed error margin. This + /// may be challenging if there is no "natural" error margin to permit. Broadly speaking, there + /// are two cases: + /// + /// 1. If your values are in a known range and you can define a threshold for "close enough to + /// be equal", it may be appropriate to define an absolute error margin. For example, if your + /// data is "length of vehicle in centimeters", you may consider 0.1 cm to be "close enough". + /// 1. If your code is more general and you do not know the range of values, you should use a + /// relative error margin, accepting e.g. 0.1% of error regardless of specific values. + /// + /// For the scenario where you can define a meaningful absolute error margin, consider using: + /// /// ```no_run - /// # let x = 1.2331f64; - /// # let y = 1.2332f64; - /// let error_margin = f64::EPSILON; // Use an epsilon for comparison - /// // Or, if Rust <= 1.42, use `std::f64::EPSILON` constant instead. - /// // let error_margin = std::f64::EPSILON; - /// if (y - 1.23f64).abs() < error_margin { } - /// if (y - x).abs() > error_margin { } + /// let a: f64 = 1000.1; + /// let b: f64 = 0.2; + /// let x = a + b; + /// let y = 1000.3; // Expected value. + /// + /// const ALLOWED_ERROR_VEHICLE_LENGTH_CM: f64 = 0.1; + /// let within_tolerance = (x - y).abs() < ALLOWED_ERROR_VEHICLE_LENGTH_CM; + /// println!("{within_tolerance}"); // true /// ``` + /// + /// NB! Do not use `f64::EPSILON` - while the error margin is often called "epsilon", this is + /// a different use of the term that is not suitable for floating point equality comparison. + /// Indeed, for the example above using `f64::EPSILON` as the allowed error would return `false`. + /// + /// For the scenario where no meaningful absolute error can be defined, refer to + /// [the floating point guide](https://www.floating-point-gui.de/errors/comparison) + /// for a reference implementation of relative error based comparison of floating point values. + /// `MIN_NORMAL` in the reference implementation is equivalent to `MIN_POSITIVE` in Rust. #[clippy::version = "pre 1.29.0"] pub FLOAT_CMP, pedantic, - "using `==` or `!=` on float values instead of comparing difference with an epsilon" + "using `==` or `!=` on float values instead of comparing difference with an allowed error" } declare_clippy_lint! { /// ### What it does - /// Checks for (in-)equality comparisons on floating-point - /// value and constant, except in functions called `*eq*` (which probably + /// Checks for (in-)equality comparisons on constant floating-point + /// values (apart from zero), except in functions called `*eq*` (which probably /// implement equality for a type involving floats). /// /// ### Why restrict this? - /// Floating point calculations are usually imprecise, so - /// asking if two values are *exactly* equal is asking for trouble. For a good - /// guide on what to do, see [the floating point - /// guide](http://www.floating-point-gui.de/errors/comparison). + /// Floating point calculations are usually imprecise, so asking if two values are *exactly* + /// equal is asking for trouble because arriving at the same logical result via different + /// routes (e.g. calculation versus constant) may yield different values. /// /// ### Example + /// /// ```no_run - /// let x: f64 = 1.0; - /// const ONE: f64 = 1.00; + /// let a: f64 = 1000.1; + /// let b: f64 = 0.2; + /// let x = a + b; + /// const Y: f64 = 1000.3; // Expected value. + /// + /// // Actual value: 1000.3000000000001 + /// println!("{x}"); /// - /// if x == ONE { } // where both are floats + /// let are_equal = x == Y; + /// println!("{are_equal}"); // false /// ``` /// - /// Use instead: + /// The correct way to compare floating point numbers is to define an allowed error margin. This + /// may be challenging if there is no "natural" error margin to permit. Broadly speaking, there + /// are two cases: + /// + /// 1. If your values are in a known range and you can define a threshold for "close enough to + /// be equal", it may be appropriate to define an absolute error margin. For example, if your + /// data is "length of vehicle in centimeters", you may consider 0.1 cm to be "close enough". + /// 1. If your code is more general and you do not know the range of values, you should use a + /// relative error margin, accepting e.g. 0.1% of error regardless of specific values. + /// + /// For the scenario where you can define a meaningful absolute error margin, consider using: + /// /// ```no_run - /// # let x: f64 = 1.0; - /// # const ONE: f64 = 1.00; - /// let error_margin = f64::EPSILON; // Use an epsilon for comparison - /// // Or, if Rust <= 1.42, use `std::f64::EPSILON` constant instead. - /// // let error_margin = std::f64::EPSILON; - /// if (x - ONE).abs() < error_margin { } + /// let a: f64 = 1000.1; + /// let b: f64 = 0.2; + /// let x = a + b; + /// const Y: f64 = 1000.3; // Expected value. + /// + /// const ALLOWED_ERROR_VEHICLE_LENGTH_CM: f64 = 0.1; + /// let within_tolerance = (x - Y).abs() < ALLOWED_ERROR_VEHICLE_LENGTH_CM; + /// println!("{within_tolerance}"); // true /// ``` + /// + /// NB! Do not use `f64::EPSILON` - while the error margin is often called "epsilon", this is + /// a different use of the term that is not suitable for floating point equality comparison. + /// Indeed, for the example above using `f64::EPSILON` as the allowed error would return `false`. + /// + /// For the scenario where no meaningful absolute error can be defined, refer to + /// [the floating point guide](https://www.floating-point-gui.de/errors/comparison) + /// for a reference implementation of relative error based comparison of floating point values. + /// `MIN_NORMAL` in the reference implementation is equivalent to `MIN_POSITIVE` in Rust. #[clippy::version = "pre 1.29.0"] pub FLOAT_CMP_CONST, restriction, - "using `==` or `!=` on float constants instead of comparing difference with an epsilon" + "using `==` or `!=` on float constants instead of comparing difference with an allowed error" } declare_clippy_lint! { /// ### What it does - /// Checks for getting the remainder of a division by one or minus + /// Checks for getting the remainder of integer division by one or minus /// one. /// /// ### Why is this bad? @@ -646,7 +714,7 @@ declare_clippy_lint! { #[clippy::version = "pre 1.29.0"] pub MODULO_ONE, correctness, - "taking a number modulo +/-1, which can either panic/overflow or always returns 0" + "taking an integer modulo +/-1, which can either panic/overflow or always returns 0" } declare_clippy_lint! { diff --git a/src/tools/clippy/clippy_lints/src/overflow_check_conditional.rs b/src/tools/clippy/clippy_lints/src/overflow_check_conditional.rs deleted file mode 100644 index de789879331..00000000000 --- a/src/tools/clippy/clippy_lints/src/overflow_check_conditional.rs +++ /dev/null @@ -1,70 +0,0 @@ -use clippy_utils::diagnostics::span_lint; -use clippy_utils::SpanlessEq; -use rustc_hir::{BinOpKind, Expr, ExprKind, QPath}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::declare_lint_pass; - -declare_clippy_lint! { - /// ### What it does - /// Detects classic underflow/overflow checks. - /// - /// ### Why is this bad? - /// Most classic C underflow/overflow checks will fail in - /// Rust. Users can use functions like `overflowing_*` and `wrapping_*` instead. - /// - /// ### Example - /// ```no_run - /// # let a = 1; - /// # let b = 2; - /// a + b < a; - /// ``` - #[clippy::version = "pre 1.29.0"] - pub OVERFLOW_CHECK_CONDITIONAL, - complexity, - "overflow checks inspired by C which are likely to panic" -} - -declare_lint_pass!(OverflowCheckConditional => [OVERFLOW_CHECK_CONDITIONAL]); - -const OVERFLOW_MSG: &str = "you are trying to use classic C overflow conditions that will fail in Rust"; -const UNDERFLOW_MSG: &str = "you are trying to use classic C underflow conditions that will fail in Rust"; - -impl<'tcx> LateLintPass<'tcx> for OverflowCheckConditional { - // a + b < a, a > a + b, a < a - b, a - b > a - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - let eq = |l, r| SpanlessEq::new(cx).eq_path_segment(l, r); - if let ExprKind::Binary(ref op, first, second) = expr.kind - && let ExprKind::Binary(ref op2, ident1, ident2) = first.kind - && let ExprKind::Path(QPath::Resolved(_, path1)) = ident1.kind - && let ExprKind::Path(QPath::Resolved(_, path2)) = ident2.kind - && let ExprKind::Path(QPath::Resolved(_, path3)) = second.kind - && (eq(&path1.segments[0], &path3.segments[0]) || eq(&path2.segments[0], &path3.segments[0])) - && cx.typeck_results().expr_ty(ident1).is_integral() - && cx.typeck_results().expr_ty(ident2).is_integral() - { - if op.node == BinOpKind::Lt && op2.node == BinOpKind::Add { - span_lint(cx, OVERFLOW_CHECK_CONDITIONAL, expr.span, OVERFLOW_MSG); - } - if op.node == BinOpKind::Gt && op2.node == BinOpKind::Sub { - span_lint(cx, OVERFLOW_CHECK_CONDITIONAL, expr.span, UNDERFLOW_MSG); - } - } - - if let ExprKind::Binary(ref op, first, second) = expr.kind - && let ExprKind::Binary(ref op2, ident1, ident2) = second.kind - && let ExprKind::Path(QPath::Resolved(_, path1)) = ident1.kind - && let ExprKind::Path(QPath::Resolved(_, path2)) = ident2.kind - && let ExprKind::Path(QPath::Resolved(_, path3)) = first.kind - && (eq(&path1.segments[0], &path3.segments[0]) || eq(&path2.segments[0], &path3.segments[0])) - && cx.typeck_results().expr_ty(ident1).is_integral() - && cx.typeck_results().expr_ty(ident2).is_integral() - { - if op.node == BinOpKind::Gt && op2.node == BinOpKind::Add { - span_lint(cx, OVERFLOW_CHECK_CONDITIONAL, expr.span, OVERFLOW_MSG); - } - if op.node == BinOpKind::Lt && op2.node == BinOpKind::Sub { - span_lint(cx, OVERFLOW_CHECK_CONDITIONAL, expr.span, UNDERFLOW_MSG); - } - } - } -} diff --git a/src/tools/clippy/clippy_lints/src/panicking_overflow_checks.rs b/src/tools/clippy/clippy_lints/src/panicking_overflow_checks.rs new file mode 100644 index 00000000000..7f100a746d5 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/panicking_overflow_checks.rs @@ -0,0 +1,86 @@ +use clippy_utils::diagnostics::span_lint; +use clippy_utils::eq_expr_value; +use rustc_hir::{BinOpKind, Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::lint::in_external_macro; +use rustc_middle::ty; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// Detects C-style underflow/overflow checks. + /// + /// ### Why is this bad? + /// These checks will, by default, panic in debug builds rather than check + /// whether the operation caused an overflow. + /// + /// ### Example + /// ```no_run + /// # let a = 1i32; + /// # let b = 2i32; + /// if a + b < a { + /// // handle overflow + /// } + /// ``` + /// + /// Use instead: + /// ```no_run + /// # let a = 1i32; + /// # let b = 2i32; + /// if a.checked_add(b).is_none() { + /// // handle overflow + /// } + /// ``` + /// + /// Or: + /// ```no_run + /// # let a = 1i32; + /// # let b = 2i32; + /// if a.overflowing_add(b).1 { + /// // handle overflow + /// } + /// ``` + #[clippy::version = "pre 1.29.0"] + pub PANICKING_OVERFLOW_CHECKS, + correctness, + "overflow checks which will panic in debug mode" +} + +declare_lint_pass!(PanickingOverflowChecks => [PANICKING_OVERFLOW_CHECKS]); + +impl<'tcx> LateLintPass<'tcx> for PanickingOverflowChecks { + // a + b < a, a > a + b, a < a - b, a - b > a + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + if let ExprKind::Binary(op, lhs, rhs) = expr.kind + && let (lt, gt) = match op.node { + BinOpKind::Lt => (lhs, rhs), + BinOpKind::Gt => (rhs, lhs), + _ => return, + } + && let ctxt = expr.span.ctxt() + && let (op_lhs, op_rhs, other, commutative) = match (<.kind, >.kind) { + (&ExprKind::Binary(op, lhs, rhs), _) if op.node == BinOpKind::Add && ctxt == lt.span.ctxt() => { + (lhs, rhs, gt, true) + }, + (_, &ExprKind::Binary(op, lhs, rhs)) if op.node == BinOpKind::Sub && ctxt == gt.span.ctxt() => { + (lhs, rhs, lt, false) + }, + _ => return, + } + && let typeck = cx.typeck_results() + && let ty = typeck.expr_ty(op_lhs) + && matches!(ty.kind(), ty::Uint(_)) + && ty == typeck.expr_ty(op_rhs) + && ty == typeck.expr_ty(other) + && !in_external_macro(cx.tcx.sess, expr.span) + && (eq_expr_value(cx, op_lhs, other) || (commutative && eq_expr_value(cx, op_rhs, other))) + { + span_lint( + cx, + PANICKING_OVERFLOW_CHECKS, + expr.span, + "you are trying to use classic C overflow conditions that will fail in Rust", + ); + } + } +} diff --git a/src/tools/clippy/clippy_lints/src/renamed_lints.rs b/src/tools/clippy/clippy_lints/src/renamed_lints.rs index 85979903b58..8e999f3e89a 100644 --- a/src/tools/clippy/clippy_lints/src/renamed_lints.rs +++ b/src/tools/clippy/clippy_lints/src/renamed_lints.rs @@ -26,12 +26,14 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[ ("clippy::option_map_unwrap_or", "clippy::map_unwrap_or"), ("clippy::option_map_unwrap_or_else", "clippy::map_unwrap_or"), ("clippy::option_unwrap_used", "clippy::unwrap_used"), + ("clippy::overflow_check_conditional", "clippy::panicking_overflow_checks"), ("clippy::ref_in_deref", "clippy::needless_borrow"), ("clippy::result_expect_used", "clippy::expect_used"), ("clippy::result_map_unwrap_or_else", "clippy::map_unwrap_or"), ("clippy::result_unwrap_used", "clippy::unwrap_used"), ("clippy::single_char_push_str", "clippy::single_char_add_str"), ("clippy::stutter", "clippy::module_name_repetitions"), + ("clippy::thread_local_initializer_can_be_made_const", "clippy::missing_const_for_thread_local"), ("clippy::to_string_in_display", "clippy::recursive_format_impl"), ("clippy::unwrap_or_else_default", "clippy::unwrap_or_default"), ("clippy::zero_width_space", "clippy::invisible_characters"), diff --git a/src/tools/clippy/clippy_lints/src/returns.rs b/src/tools/clippy/clippy_lints/src/returns.rs index c11da3147ef..8ced47b48a4 100644 --- a/src/tools/clippy/clippy_lints/src/returns.rs +++ b/src/tools/clippy/clippy_lints/src/returns.rs @@ -7,6 +7,7 @@ use clippy_utils::{ path_to_local_id, span_contains_cfg, span_find_starting_semi, }; use core::ops::ControlFlow; +use rustc_ast::NestedMetaItem; use rustc_errors::Applicability; use rustc_hir::intravisit::FnKind; use rustc_hir::LangItem::ResultErr; @@ -14,13 +15,13 @@ use rustc_hir::{ Block, Body, Expr, ExprKind, FnDecl, HirId, ItemKind, LangItem, MatchSource, Node, OwnerNode, PatKind, QPath, Stmt, StmtKind, }; -use rustc_lint::{LateContext, LateLintPass, LintContext}; +use rustc_lint::{LateContext, LateLintPass, Level, LintContext}; use rustc_middle::lint::in_external_macro; 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::{BytePos, Pos, Span}; +use rustc_span::{sym, BytePos, Pos, Span}; use std::borrow::Cow; use std::fmt::Display; @@ -80,6 +81,9 @@ declare_clippy_lint! { /// ``` #[clippy::version = "pre 1.29.0"] pub NEEDLESS_RETURN, + // This lint requires some special handling in `check_final_expr` for `#[expect]`. + // This handling needs to be updated if the group gets changed. This should also + // be caught by tests. style, "using a return statement like `return expr;` where an expression would suffice" } @@ -91,6 +95,9 @@ declare_clippy_lint! { /// ### Why is this bad? /// The `return` is unnecessary. /// + /// Returns may be used to add attributes to the return expression. Return + /// statements with attributes are therefore be accepted by this lint. + /// /// ### Example /// ```rust,ignore /// fn foo(x: usize) -> Result<(), Box<dyn Error>> { @@ -377,13 +384,39 @@ fn check_final_expr<'tcx>( } }; - if !cx.tcx.hir().attrs(expr.hir_id).is_empty() { - return; - } let borrows = inner.map_or(false, |inner| last_statement_borrows(cx, inner)); if borrows { return; } + if ret_span.from_expansion() { + return; + } + + // Returns may be used to turn an expression into a statement in rustc's AST. + // This allows the addition of attributes, like `#[allow]` (See: clippy#9361) + // `#[expect(clippy::needless_return)]` needs to be handled separatly to + // actually fullfil the expectation (clippy::#12998) + match cx.tcx.hir().attrs(expr.hir_id) { + [] => {}, + [attr] => { + 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 [tool, lint_name] = meta_item.path.segments.as_slice() + && tool.ident.name == sym::clippy + && matches!( + lint_name.ident.name.as_str(), + "needless_return" | "style" | "all" | "warnings" + ) + { + // This is an expectation of the `needless_return` lint + } else { + return; + } + }, + _ => return, + } emit_return_lint(cx, ret_span, semi_spans, &replacement, expr.hir_id); }, @@ -415,10 +448,6 @@ fn emit_return_lint( replacement: &RetReplacement<'_>, at: HirId, ) { - if ret_span.from_expansion() { - return; - } - span_lint_hir_and_then( cx, NEEDLESS_RETURN, 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 8fdd19c549f..508f3ae6def 100644 --- a/src/tools/clippy/clippy_lints/src/same_name_method.rs +++ b/src/tools/clippy/clippy_lints/src/same_name_method.rs @@ -12,7 +12,7 @@ use std::collections::{BTreeMap, BTreeSet}; declare_clippy_lint! { /// ### What it does /// It lints if a struct has two methods with the same name: - /// one from a trait, another not from trait. + /// one from a trait, another not from a trait. /// /// ### Why restrict this? /// Confusing. 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 new file mode 100644 index 00000000000..5e65b9fa517 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/set_contains_or_insert.rs @@ -0,0 +1,125 @@ +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 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}; + +declare_clippy_lint! { + /// ### What it does + /// Checks for usage of `contains` to see if a value is not + /// present on `HashSet` followed by a `insert`. + /// + /// ### Why is this bad? + /// Using just `insert` and checking the returned `bool` is more efficient. + /// + /// ### Known problems + /// In case the value that wants to be inserted is borrowed and also expensive or impossible + /// to clone. In such a scenario, the developer might want to check with `contains` before inserting, + /// to avoid the clone. In this case, it will report a false positive. + /// + /// ### Example + /// ```rust + /// use std::collections::HashSet; + /// let mut set = HashSet::new(); + /// let value = 5; + /// if !set.contains(&value) { + /// set.insert(value); + /// println!("inserted {value:?}"); + /// } + /// ``` + /// Use instead: + /// ```rust + /// use std::collections::HashSet; + /// let mut set = HashSet::new(); + /// let value = 5; + /// if set.insert(&value) { + /// println!("inserted {value:?}"); + /// } + /// ``` + #[clippy::version = "1.80.0"] + pub SET_CONTAINS_OR_INSERT, + nursery, + "call to `HashSet::contains` followed by `HashSet::insert`" +} + +declare_lint_pass!(HashsetInsertAfterContains => [SET_CONTAINS_OR_INSERT]); + +impl<'tcx> LateLintPass<'tcx> for HashsetInsertAfterContains { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + if !expr.span.from_expansion() + && let Some(higher::If { + cond: cond_expr, + then: then_expr, + .. + }) = higher::If::hir(expr) + && let Some(contains_expr) = try_parse_op_call(cx, cond_expr, sym!(contains))//try_parse_contains(cx, cond_expr) + && let Some(insert_expr) = find_insert_calls(cx, &contains_expr, then_expr) + { + span_lint( + cx, + SET_CONTAINS_OR_INSERT, + vec![contains_expr.span, insert_expr.span], + "usage of `HashSet::insert` after `HashSet::contains`", + ); + } + } +} + +struct OpExpr<'tcx> { + receiver: &'tcx Expr<'tcx>, + value: &'tcx Expr<'tcx>, + span: Span, +} + +fn try_parse_op_call<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, symbol: Symbol) -> Option<OpExpr<'tcx>> { + let expr = peel_hir_expr_while(expr, |e| { + if let ExprKind::Unary(UnOp::Not, e) = e.kind { + Some(e) + } else { + None + } + }); + + if let ExprKind::MethodCall(path, receiver, [value], span) = expr.kind { + let value = value.peel_borrows(); + let value = peel_hir_expr_while(value, |e| { + if let ExprKind::Unary(UnOp::Deref, e) = e.kind { + Some(e) + } else { + None + } + }); + let receiver = receiver.peel_borrows(); + let receiver_ty = cx.typeck_results().expr_ty(receiver).peel_refs(); + if value.span.eq_ctxt(expr.span) + && is_type_diagnostic_item(cx, receiver_ty, sym::HashSet) + && path.ident.name == symbol + { + return Some(OpExpr { receiver, value, span }); + } + } + None +} + +fn find_insert_calls<'tcx>( + cx: &LateContext<'tcx>, + contains_expr: &OpExpr<'tcx>, + expr: &'tcx Expr<'_>, +) -> Option<OpExpr<'tcx>> { + for_each_expr(cx, expr, |e| { + if let Some(insert_expr) = try_parse_op_call(cx, e, sym!(insert)) + && SpanlessEq::new(cx).eq_expr(contains_expr.receiver, insert_expr.receiver) + && SpanlessEq::new(cx).eq_expr(contains_expr.value, insert_expr.value) + { + ControlFlow::Break(insert_expr) + } else { + ControlFlow::Continue(()) + } + }) +} diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs index 877a77fd6d2..1d294c2944b 100644 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs +++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs @@ -1,6 +1,5 @@ pub mod almost_standard_lint_formulation; pub mod collapsible_calls; -pub mod compiler_lint_functions; pub mod interning_defined_symbol; pub mod invalid_paths; pub mod lint_without_lint_pass; diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints/compiler_lint_functions.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints/compiler_lint_functions.rs deleted file mode 100644 index 9b6b6871818..00000000000 --- a/src/tools/clippy/clippy_lints/src/utils/internal_lints/compiler_lint_functions.rs +++ /dev/null @@ -1,73 +0,0 @@ -use clippy_utils::diagnostics::span_lint_and_help; -use clippy_utils::ty::match_type; -use clippy_utils::{is_lint_allowed, paths}; -use rustc_data_structures::fx::FxHashMap; -use rustc_hir::{Expr, ExprKind}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::impl_lint_pass; - -declare_clippy_lint! { - /// ### What it does - /// Checks for calls to `cx.span_lint*` and suggests to use the `utils::*` - /// variant of the function. - /// - /// ### Why is this bad? - /// The `utils::*` variants also add a link to the Clippy documentation to the - /// warning/error messages. - /// - /// ### Example - /// ```rust,ignore - /// cx.span_lint(LINT_NAME, "message"); - /// ``` - /// - /// Use instead: - /// ```rust,ignore - /// utils::span_lint(cx, LINT_NAME, "message"); - /// ``` - pub COMPILER_LINT_FUNCTIONS, - internal, - "usage of the lint functions of the compiler instead of the utils::* variant" -} - -impl_lint_pass!(CompilerLintFunctions => [COMPILER_LINT_FUNCTIONS]); - -#[derive(Clone, Default)] -pub struct CompilerLintFunctions { - map: FxHashMap<&'static str, &'static str>, -} - -impl CompilerLintFunctions { - #[must_use] - pub fn new() -> Self { - let mut map = FxHashMap::default(); - map.insert("span_lint", "utils::span_lint"); - map.insert("lint", "utils::span_lint"); - map.insert("span_lint_note", "utils::span_lint_and_note"); - map.insert("span_lint_help", "utils::span_lint_and_help"); - Self { map } - } -} - -impl<'tcx> LateLintPass<'tcx> for CompilerLintFunctions { - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if is_lint_allowed(cx, COMPILER_LINT_FUNCTIONS, expr.hir_id) { - return; - } - - if let ExprKind::MethodCall(path, self_arg, _, _) = &expr.kind - && let fn_name = path.ident - && let Some(sugg) = self.map.get(fn_name.as_str()) - && let ty = cx.typeck_results().expr_ty(self_arg).peel_refs() - && (match_type(cx, ty, &paths::EARLY_CONTEXT) || match_type(cx, ty, &paths::LATE_CONTEXT)) - { - span_lint_and_help( - cx, - COMPILER_LINT_FUNCTIONS, - path.ident.span, - "usage of a compiler lint function", - None, - format!("please use the Clippy variant of this function: `{sugg}`"), - ); - } - } -} diff --git a/src/tools/clippy/clippy_lints/src/wildcard_imports.rs b/src/tools/clippy/clippy_lints/src/wildcard_imports.rs index 436f0cb79fb..a0a60ca8875 100644 --- a/src/tools/clippy/clippy_lints/src/wildcard_imports.rs +++ b/src/tools/clippy/clippy_lints/src/wildcard_imports.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::is_test_module_or_function; +use clippy_utils::is_in_test; use clippy_utils::source::{snippet, snippet_with_applicability}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; @@ -100,7 +100,6 @@ declare_clippy_lint! { #[derive(Default)] pub struct WildcardImports { warn_on_all: bool, - test_modules_deep: u32, allowed_segments: FxHashSet<String>, } @@ -108,7 +107,6 @@ impl WildcardImports { pub fn new(warn_on_all: bool, allowed_wildcard_imports: FxHashSet<String>) -> Self { Self { warn_on_all, - test_modules_deep: 0, allowed_segments: allowed_wildcard_imports, } } @@ -122,15 +120,12 @@ impl LateLintPass<'_> for WildcardImports { return; } - if is_test_module_or_function(cx.tcx, item) { - self.test_modules_deep = self.test_modules_deep.saturating_add(1); - } let module = cx.tcx.parent_module_from_def_id(item.owner_id.def_id); if cx.tcx.visibility(item.owner_id.def_id) != ty::Visibility::Restricted(module.to_def_id()) { return; } if let ItemKind::Use(use_path, UseKind::Glob) = &item.kind - && (self.warn_on_all || !self.check_exceptions(item, use_path.segments)) + && (self.warn_on_all || !self.check_exceptions(cx, item, use_path.segments)) && let used_imports = cx.tcx.names_imported_by_glob_use(item.owner_id.def_id) && !used_imports.is_empty() // Already handled by `unused_imports` && !used_imports.contains(&kw::Underscore) @@ -180,20 +175,14 @@ impl LateLintPass<'_> for WildcardImports { span_lint_and_sugg(cx, lint, span, message, "try", sugg, applicability); } } - - fn check_item_post(&mut self, cx: &LateContext<'_>, item: &Item<'_>) { - if is_test_module_or_function(cx.tcx, item) { - self.test_modules_deep = self.test_modules_deep.saturating_sub(1); - } - } } impl WildcardImports { - fn check_exceptions(&self, item: &Item<'_>, segments: &[PathSegment<'_>]) -> bool { + fn check_exceptions(&self, cx: &LateContext<'_>, item: &Item<'_>, segments: &[PathSegment<'_>]) -> bool { item.span.from_expansion() || is_prelude_import(segments) - || (is_super_only_import(segments) && self.test_modules_deep > 0) || is_allowed_via_config(segments, &self.allowed_segments) + || (is_super_only_import(segments) && is_in_test(cx.tcx, item.hir_id())) } } diff --git a/src/tools/clippy/clippy_lints/src/write.rs b/src/tools/clippy/clippy_lints/src/write.rs index 652ce88bd95..96e53b7ef0b 100644 --- a/src/tools/clippy/clippy_lints/src/write.rs +++ b/src/tools/clippy/clippy_lints/src/write.rs @@ -1,7 +1,7 @@ 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, snippet_opt}; -use clippy_utils::{is_in_cfg_test, is_in_test_function}; use rustc_ast::token::LitKind; use rustc_ast::{ FormatArgPosition, FormatArgPositionKind, FormatArgs, FormatArgsPiece, FormatOptions, FormatPlaceholder, @@ -297,8 +297,7 @@ impl<'tcx> LateLintPass<'tcx> for Write { .as_ref() .map_or(false, |crate_name| crate_name == "build_script_build"); - let allowed_in_tests = self.allow_print_in_tests - && (is_in_test_function(cx.tcx, expr.hir_id) || is_in_cfg_test(cx.tcx, expr.hir_id)); + let allowed_in_tests = self.allow_print_in_tests && is_in_test(cx.tcx, expr.hir_id); match diag_name { sym::print_macro | sym::println_macro if !allowed_in_tests => { if !is_build_script { diff --git a/src/tools/clippy/clippy_utils/src/lib.rs b/src/tools/clippy/clippy_utils/src/lib.rs index 935a25d7931..bdb3b5e45c4 100644 --- a/src/tools/clippy/clippy_utils/src/lib.rs +++ b/src/tools/clippy/clippy_utils/src/lib.rs @@ -102,10 +102,11 @@ 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::{ - self as hir, def, Arm, ArrayLen, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, Destination, Expr, - ExprField, ExprKind, FnDecl, FnRetTy, GenericArgs, HirId, Impl, ImplItem, ImplItemKind, ImplItemRef, Item, - ItemKind, LangItem, LetStmt, MatchSource, Mutability, Node, OwnerId, Param, Pat, PatKind, Path, PathSegment, - PrimTy, QPath, Stmt, StmtKind, TraitItem, TraitItemKind, TraitItemRef, TraitRef, TyKind, UnOp, + self as hir, def, Arm, ArrayLen, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, 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, }; use rustc_lexer::{tokenize, TokenKind}; use rustc_lint::{LateContext, Level, Lint, LintContext}; @@ -210,7 +211,10 @@ pub fn local_is_initialized(cx: &LateContext<'_>, local: HirId) -> bool { false } -/// Returns `true` if the given `NodeId` is inside a constant context +/// Returns `true` if the given `HirId` is inside a constant context. +/// +/// This is the same as `is_inside_always_const_context`, but also includes +/// `const fn`. /// /// # Example /// @@ -223,6 +227,24 @@ pub fn in_constant(cx: &LateContext<'_>, id: HirId) -> bool { cx.tcx.hir().is_inside_const_context(id) } +/// Returns `true` if the given `HirId` is inside an always constant context. +/// +/// This context includes: +/// * const/static items +/// * const blocks (or inline consts) +/// * associated constants +pub fn is_inside_always_const_context(tcx: TyCtxt<'_>, hir_id: HirId) -> bool { + use ConstContext::{Const, ConstFn, Static}; + let hir = tcx.hir(); + let Some(ctx) = hir.body_const_context(hir.enclosing_body_owner(hir_id)) else { + return false; + }; + match ctx { + ConstFn => false, + Static(_) | Const { inline: _ } => true, + } +} + /// Checks if a `Res` refers to a constructor of a `LangItem` /// For example, use this to check whether a function call or a pattern is `Some(..)`. pub fn is_res_lang_ctor(cx: &LateContext<'_>, res: Res, lang_item: LangItem) -> bool { @@ -1904,8 +1926,18 @@ pub fn any_parent_has_attr(tcx: TyCtxt<'_>, node: HirId, symbol: Symbol) -> bool false } -pub fn any_parent_is_automatically_derived(tcx: TyCtxt<'_>, node: HirId) -> bool { - any_parent_has_attr(tcx, node, sym::automatically_derived) +/// Checks if the given HIR node is inside an `impl` block with the `automatically_derived` +/// attribute. +pub fn in_automatically_derived(tcx: TyCtxt<'_>, id: HirId) -> bool { + tcx.hir() + .parent_owner_iter(id) + .filter(|(_, node)| matches!(node, OwnerNode::Item(item) if matches!(item.kind, ItemKind::Impl(_)))) + .any(|(id, _)| { + has_attr( + tcx.hir().attrs(tcx.local_def_id_to_hir_id(id.def_id)), + sym::automatically_derived, + ) + }) } /// Matches a function call with the given path and returns the arguments. @@ -2472,6 +2504,17 @@ pub fn peel_hir_ty_refs<'a>(mut ty: &'a hir::Ty<'a>) -> (&'a hir::Ty<'a>, usize) } } +/// Peels off all references on the type. Returns the underlying type and the number of references +/// removed. +pub fn peel_middle_ty_refs(mut ty: Ty<'_>) -> (Ty<'_>, usize) { + let mut count = 0; + while let rustc_ty::Ref(_, dest_ty, _) = ty.kind() { + ty = *dest_ty; + count += 1; + } + (ty, count) +} + /// Removes `AddrOf` operators (`&`) or deref operators (`*`), but only if a reference type is /// dereferenced. An overloaded deref such as `Vec` to slice would not be removed. pub fn peel_ref_operators<'hir>(cx: &LateContext<'_>, mut expr: &'hir Expr<'hir>) -> &'hir Expr<'hir> { @@ -2594,16 +2637,6 @@ pub fn inherits_cfg(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool { .any(|attr| attr.has_name(sym::cfg)) } -/// Checks whether item either has `test` attribute applied, or -/// is a module with `test` in its name. -/// -/// Note: Add `//@compile-flags: --test` to UI tests with a `#[test]` function -pub fn is_test_module_or_function(tcx: TyCtxt<'_>, item: &Item<'_>) -> bool { - is_in_test_function(tcx, item.hir_id()) - || matches!(item.kind, ItemKind::Mod(..)) - && item.ident.name.as_str().split('_').any(|a| a == "test" || a == "tests") -} - /// Walks up the HIR tree from the given expression in an attempt to find where the value is /// consumed. /// diff --git a/src/tools/clippy/clippy_utils/src/paths.rs b/src/tools/clippy/clippy_utils/src/paths.rs index 3f66813801d..d5a3d8b9e5a 100644 --- a/src/tools/clippy/clippy_utils/src/paths.rs +++ b/src/tools/clippy/clippy_utils/src/paths.rs @@ -88,6 +88,7 @@ pub const SYMBOL_INTERN: [&str; 4] = ["rustc_span", "symbol", "Symbol", "intern" pub const SYMBOL_TO_IDENT_STRING: [&str; 4] = ["rustc_span", "symbol", "Symbol", "to_ident_string"]; pub const SYM_MODULE: [&str; 3] = ["rustc_span", "symbol", "sym"]; pub const SYNTAX_CONTEXT: [&str; 3] = ["rustc_span", "hygiene", "SyntaxContext"]; +pub const STRING_FROM_UTF8: [&str; 4] = ["alloc", "string", "String", "from_utf8"]; #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates pub const TOKIO_FILE_OPTIONS: [&str; 5] = ["tokio", "fs", "file", "File", "options"]; #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates diff --git a/src/tools/clippy/clippy_utils/src/ty.rs b/src/tools/clippy/clippy_utils/src/ty.rs index acaeb93f44a..fc02b974ee1 100644 --- a/src/tools/clippy/clippy_utils/src/ty.rs +++ b/src/tools/clippy/clippy_utils/src/ty.rs @@ -96,11 +96,7 @@ pub fn contains_ty_adt_constructor_opaque<'tcx>(cx: &LateContext<'tcx>, ty: Ty<' return false; } - for (predicate, _span) in cx - .tcx - .explicit_item_super_predicates(def_id) - .iter_identity_copied() - { + for (predicate, _span) in cx.tcx.explicit_item_super_predicates(def_id).iter_identity_copied() { match predicate.kind().skip_binder() { // For `impl Trait<U>`, it will register a predicate of `T: Trait<U>`, so we go through // and check substitutions to find `U`. @@ -1332,19 +1328,13 @@ 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() - .flatten() - .map(|&did| { - cx.tcx - .associated_items(did) - .filter_by_name_unhygienic(method_name) - .next() - .filter(|item| item.kind == AssocKind::Fn) - }) - .next() - .flatten() + cx.tcx.inherent_impls(ty_did).into_iter().flatten().find_map(|&did| { + cx.tcx + .associated_items(did) + .filter_by_name_unhygienic(method_name) + .next() + .filter(|item| item.kind == AssocKind::Fn) + }) } else { None } diff --git a/src/tools/clippy/lintcheck/Cargo.toml b/src/tools/clippy/lintcheck/Cargo.toml index ae9e77b8eed..3c86dfe324f 100644 --- a/src/tools/clippy/lintcheck/Cargo.toml +++ b/src/tools/clippy/lintcheck/Cargo.toml @@ -16,6 +16,7 @@ clap = { version = "4.4", features = ["derive", "env"] } crossbeam-channel = "0.5.6" diff = "0.1.13" flate2 = "1.0" +itertools = "0.12" rayon = "1.5.1" serde = { version = "1.0", features = ["derive"] } serde_json = "1.0.85" diff --git a/src/tools/clippy/lintcheck/README.md b/src/tools/clippy/lintcheck/README.md index 2d6039caeef..47a96e0a03c 100644 --- a/src/tools/clippy/lintcheck/README.md +++ b/src/tools/clippy/lintcheck/README.md @@ -7,13 +7,13 @@ repo. We can then check the diff and spot new or disappearing warnings. From the repo root, run: ``` -cargo run --target-dir lintcheck/target --manifest-path lintcheck/Cargo.toml +cargo lintcheck ``` or ``` -cargo lintcheck +cargo run --target-dir lintcheck/target --manifest-path lintcheck/Cargo.toml ``` By default, the logs will be saved into @@ -33,6 +33,8 @@ the 200 recently most downloaded crates: cargo lintcheck popular -n 200 custom.toml ``` +> Note: Lintcheck isn't sandboxed. Only use it to check crates that you trust or +> sandbox it manually. ### Configuring the Crate Sources @@ -65,17 +67,11 @@ sources. #### Command Line Options (optional) ```toml -bitflags = {name = "bitflags", versions = ['1.2.1'], options = ['-Wclippy::pedantic', '-Wclippy::cargo']} +clap = {name = "clap", versions = ['4.5.8'], options = ['-Fderive']} ``` It is possible to specify command line options for each crate. This makes it -possible to only check a crate for certain lint groups. If no options are -specified, the lint groups `clippy::all`, `clippy::pedantic`, and -`clippy::cargo` are checked. If an empty array is specified only `clippy::all` -is checked. - -**Note:** `-Wclippy::all` is always enabled by default, unless `-Aclippy::all` -is explicitly specified in the options. +possible to enable or disable features. ### Fix mode You can run `cargo lintcheck --fix` which will run Clippy with `--fix` and diff --git a/src/tools/clippy/lintcheck/lintcheck_crates.toml b/src/tools/clippy/lintcheck/lintcheck_crates.toml index 52f7fee47b6..ff608e6f935 100644 --- a/src/tools/clippy/lintcheck/lintcheck_crates.toml +++ b/src/tools/clippy/lintcheck/lintcheck_crates.toml @@ -1,38 +1,38 @@ [crates] # some of these are from cargotest -cargo = {name = "cargo", versions = ['0.64.0']} -iron = {name = "iron", versions = ['0.6.1']} -ripgrep = {name = "ripgrep", versions = ['12.1.1']} -xsv = {name = "xsv", versions = ['0.13.0']} +cargo = {name = "cargo", version = '0.64.0'} +iron = {name = "iron", version = '0.6.1'} +ripgrep = {name = "ripgrep", version = '12.1.1'} +xsv = {name = "xsv", version = '0.13.0'} # commented out because of 173K clippy::match_same_arms msgs in language_type.rs -#tokei = { name = "tokei", versions = ['12.0.4']} -rayon = {name = "rayon", versions = ['1.5.0']} -serde = {name = "serde", versions = ['1.0.118']} +#tokei = { name = "tokei", version = '12.0.4'} +rayon = {name = "rayon", version = '1.5.0'} +serde = {name = "serde", version = '1.0.118'} # top 10 crates.io dls -bitflags = {name = "bitflags", versions = ['1.2.1']} +bitflags = {name = "bitflags", version = '1.2.1'} # crash = {name = "clippy_crash", path = "/tmp/clippy_crash"} -libc = {name = "libc", versions = ['0.2.81']} -log = {name = "log", versions = ['0.4.11']} -proc-macro2 = {name = "proc-macro2", versions = ['1.0.24']} -quote = {name = "quote", versions = ['1.0.7']} -rand = {name = "rand", versions = ['0.7.3']} -rand_core = {name = "rand_core", versions = ['0.6.0']} -regex = {name = "regex", versions = ['1.3.2']} -syn = {name = "syn", versions = ['1.0.54']} -unicode-xid = {name = "unicode-xid", versions = ['0.2.1']} +libc = {name = "libc", version = '0.2.81'} +log = {name = "log", version = '0.4.11'} +proc-macro2 = {name = "proc-macro2", version = '1.0.24'} +quote = {name = "quote", version = '1.0.7'} +rand = {name = "rand", version = '0.7.3'} +rand_core = {name = "rand_core", version = '0.6.0'} +regex = {name = "regex", version = '1.3.2'} +syn = {name = "syn", version = '1.0.54'} +unicode-xid = {name = "unicode-xid", version = '0.2.1'} # some more of dtolnays crates -anyhow = {name = "anyhow", versions = ['1.0.38']} -async-trait = {name = "async-trait", versions = ['0.1.42']} -cxx = {name = "cxx", versions = ['1.0.32']} -ryu = {name = "ryu", versions = ['1.0.5']} -serde_yaml = {name = "serde_yaml", versions = ['0.8.17']} -thiserror = {name = "thiserror", versions = ['1.0.24']} +anyhow = {name = "anyhow", version = '1.0.38'} +async-trait = {name = "async-trait", version = '0.1.42'} +cxx = {name = "cxx", version = '1.0.32'} +ryu = {name = "ryu", version = '1.0.5'} +serde_yaml = {name = "serde_yaml", version = '0.8.17'} +thiserror = {name = "thiserror", version = '1.0.24'} # some embark crates, there are other interesting crates but # unfortunately adding them increases lintcheck runtime drastically -cfg-expr = {name = "cfg-expr", versions = ['0.7.1']} +cfg-expr = {name = "cfg-expr", version = '0.7.1'} puffin = {name = "puffin", git_url = "https://github.com/EmbarkStudios/puffin", git_hash = "02dd4a3"} -rpmalloc = {name = "rpmalloc", versions = ['0.2.0']} -tame-oidc = {name = "tame-oidc", versions = ['0.1.0']} +rpmalloc = {name = "rpmalloc", version = '0.2.0'} +tame-oidc = {name = "tame-oidc", version = '0.1.0'} [recursive] ignore = [ diff --git a/src/tools/clippy/lintcheck/src/config.rs b/src/tools/clippy/lintcheck/src/config.rs index e6cd7c9fdc2..b35a62eed44 100644 --- a/src/tools/clippy/lintcheck/src/config.rs +++ b/src/tools/clippy/lintcheck/src/config.rs @@ -36,6 +36,10 @@ pub(crate) struct LintcheckConfig { /// Apply a filter to only collect specified lints, this also overrides `allow` attributes #[clap(long = "filter", value_name = "clippy_lint_name", use_value_delimiter = true)] pub lint_filter: Vec<String>, + /// Set all lints to the "warn" lint level, even resitriction ones. Usually, + /// it's better to use `--filter` instead + #[clap(long, conflicts_with("lint_filter"))] + pub warn_all: bool, /// Set the output format of the log file #[clap(long, short, default_value = "text")] pub format: OutputFormat, diff --git a/src/tools/clippy/lintcheck/src/driver.rs b/src/tools/clippy/lintcheck/src/driver.rs index 47724a2fedb..041be5081f2 100644 --- a/src/tools/clippy/lintcheck/src/driver.rs +++ b/src/tools/clippy/lintcheck/src/driver.rs @@ -11,8 +11,6 @@ use std::{env, mem}; fn run_clippy(addr: &str) -> Option<i32> { let driver_info = DriverInfo { package_name: env::var("CARGO_PKG_NAME").ok()?, - crate_name: env::var("CARGO_CRATE_NAME").ok()?, - version: env::var("CARGO_PKG_VERSION").ok()?, }; let mut stream = BufReader::new(TcpStream::connect(addr).unwrap()); diff --git a/src/tools/clippy/lintcheck/src/input.rs b/src/tools/clippy/lintcheck/src/input.rs new file mode 100644 index 00000000000..3d034391c28 --- /dev/null +++ b/src/tools/clippy/lintcheck/src/input.rs @@ -0,0 +1,288 @@ +use std::collections::{HashMap, HashSet}; +use std::fs::{self}; +use std::io::{self, ErrorKind}; +use std::path::{Path, PathBuf}; +use std::process::Command; +use std::time::Duration; + +use serde::Deserialize; +use walkdir::{DirEntry, WalkDir}; + +use crate::{Crate, LINTCHECK_DOWNLOADS, LINTCHECK_SOURCES}; + +/// List of sources to check, loaded from a .toml file +#[derive(Debug, Deserialize)] +pub struct SourceList { + crates: HashMap<String, TomlCrate>, + #[serde(default)] + recursive: RecursiveOptions, +} + +#[derive(Debug, Deserialize, Default)] +pub struct RecursiveOptions { + pub ignore: HashSet<String>, +} + +/// A crate source stored inside the .toml +/// will be translated into on one of the `CrateSource` variants +#[derive(Debug, Deserialize)] +struct TomlCrate { + name: String, + version: Option<String>, + git_url: Option<String>, + git_hash: Option<String>, + path: Option<String>, + options: Option<Vec<String>>, +} + +/// Represents an archive we download from crates.io, or a git repo, or a local repo/folder +/// Once processed (downloaded/extracted/cloned/copied...), this will be translated into a `Crate` +#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Ord, PartialOrd)] +pub enum CrateSource { + CratesIo { + name: String, + version: String, + options: Option<Vec<String>>, + }, + Git { + name: String, + url: String, + commit: String, + options: Option<Vec<String>>, + }, + Path { + name: String, + path: PathBuf, + options: Option<Vec<String>>, + }, +} + +/// Read a `lintcheck_crates.toml` file +pub fn read_crates(toml_path: &Path) -> (Vec<CrateSource>, RecursiveOptions) { + let toml_content: String = + fs::read_to_string(toml_path).unwrap_or_else(|_| panic!("Failed to read {}", toml_path.display())); + let crate_list: SourceList = + toml::from_str(&toml_content).unwrap_or_else(|e| panic!("Failed to parse {}: \n{e}", toml_path.display())); + // parse the hashmap of the toml file into a list of crates + let tomlcrates: Vec<TomlCrate> = crate_list.crates.into_values().collect(); + + // flatten TomlCrates into CrateSources (one TomlCrates may represent several versions of a crate => + // multiple Cratesources) + let mut crate_sources = Vec::new(); + for tk in tomlcrates { + if let Some(ref path) = tk.path { + crate_sources.push(CrateSource::Path { + name: tk.name.clone(), + path: PathBuf::from(path), + options: tk.options.clone(), + }); + } else if let Some(ref version) = tk.version { + crate_sources.push(CrateSource::CratesIo { + name: tk.name.clone(), + version: version.to_string(), + options: tk.options.clone(), + }); + } else if tk.git_url.is_some() && tk.git_hash.is_some() { + // otherwise, we should have a git source + crate_sources.push(CrateSource::Git { + name: tk.name.clone(), + url: tk.git_url.clone().unwrap(), + commit: tk.git_hash.clone().unwrap(), + options: tk.options.clone(), + }); + } else { + panic!("Invalid crate source: {tk:?}"); + } + + // if we have a version as well as a git data OR only one git data, something is funky + if tk.version.is_some() && (tk.git_url.is_some() || tk.git_hash.is_some()) + || tk.git_hash.is_some() != tk.git_url.is_some() + { + eprintln!("tomlkrate: {tk:?}"); + assert_eq!( + tk.git_hash.is_some(), + tk.git_url.is_some(), + "Error: Encountered TomlCrate with only one of git_hash and git_url!" + ); + assert!( + tk.path.is_none() || (tk.git_hash.is_none() && tk.version.is_none()), + "Error: TomlCrate can only have one of 'git_.*', 'version' or 'path' fields" + ); + unreachable!("Failed to translate TomlCrate into CrateSource!"); + } + } + // sort the crates + crate_sources.sort(); + + (crate_sources, crate_list.recursive) +} + +impl CrateSource { + /// Makes the sources available on the disk for clippy to check. + /// Clones a git repo and checks out the specified commit or downloads a crate from crates.io or + /// copies a local folder + #[expect(clippy::too_many_lines)] + pub fn download_and_extract(&self) -> Crate { + #[allow(clippy::result_large_err)] + fn get(path: &str) -> Result<ureq::Response, ureq::Error> { + const MAX_RETRIES: u8 = 4; + let mut retries = 0; + loop { + match ureq::get(path).call() { + Ok(res) => return Ok(res), + Err(e) if retries >= MAX_RETRIES => return Err(e), + Err(ureq::Error::Transport(e)) => eprintln!("Error: {e}"), + Err(e) => return Err(e), + } + eprintln!("retrying in {retries} seconds..."); + std::thread::sleep(Duration::from_secs(u64::from(retries))); + retries += 1; + } + } + match self { + CrateSource::CratesIo { name, version, options } => { + let extract_dir = PathBuf::from(LINTCHECK_SOURCES); + let krate_download_dir = PathBuf::from(LINTCHECK_DOWNLOADS); + + // url to download the crate from crates.io + let url = format!("https://crates.io/api/v1/crates/{name}/{version}/download"); + println!("Downloading and extracting {name} {version} from {url}"); + create_dirs(&krate_download_dir, &extract_dir); + + let krate_file_path = krate_download_dir.join(format!("{name}-{version}.crate.tar.gz")); + // don't download/extract if we already have done so + if !krate_file_path.is_file() { + // create a file path to download and write the crate data into + let mut krate_dest = fs::File::create(&krate_file_path).unwrap(); + let mut krate_req = get(&url).unwrap().into_reader(); + // copy the crate into the file + io::copy(&mut krate_req, &mut krate_dest).unwrap(); + + // unzip the tarball + let ungz_tar = flate2::read::GzDecoder::new(fs::File::open(&krate_file_path).unwrap()); + // extract the tar archive + let mut archive = tar::Archive::new(ungz_tar); + archive.unpack(&extract_dir).expect("Failed to extract!"); + } + // crate is extracted, return a new Krate object which contains the path to the extracted + // sources that clippy can check + Crate { + version: version.clone(), + name: name.clone(), + path: extract_dir.join(format!("{name}-{version}/")), + options: options.clone(), + } + }, + CrateSource::Git { + name, + url, + commit, + options, + } => { + let repo_path = { + let mut repo_path = PathBuf::from(LINTCHECK_SOURCES); + // add a -git suffix in case we have the same crate from crates.io and a git repo + repo_path.push(format!("{name}-git")); + repo_path + }; + // clone the repo if we have not done so + if !repo_path.is_dir() { + println!("Cloning {url} and checking out {commit}"); + if !Command::new("git") + .arg("clone") + .arg(url) + .arg(&repo_path) + .status() + .expect("Failed to clone git repo!") + .success() + { + eprintln!("Failed to clone {url} into {}", repo_path.display()); + } + } + // check out the commit/branch/whatever + if !Command::new("git") + .args(["-c", "advice.detachedHead=false"]) + .arg("checkout") + .arg(commit) + .current_dir(&repo_path) + .status() + .expect("Failed to check out commit") + .success() + { + eprintln!("Failed to checkout {commit} of repo at {}", repo_path.display()); + } + + Crate { + version: commit.clone(), + name: name.clone(), + path: repo_path, + options: options.clone(), + } + }, + CrateSource::Path { name, path, options } => { + fn is_cache_dir(entry: &DirEntry) -> bool { + fs::read(entry.path().join("CACHEDIR.TAG")) + .map(|x| x.starts_with(b"Signature: 8a477f597d28d172789f06886806bc55")) + .unwrap_or(false) + } + + // copy path into the dest_crate_root but skip directories that contain a CACHEDIR.TAG file. + // The target/ directory contains a CACHEDIR.TAG file so it is the most commonly skipped directory + // as a result of this filter. + let dest_crate_root = PathBuf::from(LINTCHECK_SOURCES).join(name); + if dest_crate_root.exists() { + println!("Deleting existing directory at {dest_crate_root:?}"); + fs::remove_dir_all(&dest_crate_root).unwrap(); + } + + println!("Copying {path:?} to {dest_crate_root:?}"); + + for entry in WalkDir::new(path).into_iter().filter_entry(|e| !is_cache_dir(e)) { + let entry = entry.unwrap(); + let entry_path = entry.path(); + let relative_entry_path = entry_path.strip_prefix(path).unwrap(); + let dest_path = dest_crate_root.join(relative_entry_path); + let metadata = entry_path.symlink_metadata().unwrap(); + + if metadata.is_dir() { + fs::create_dir(dest_path).unwrap(); + } else if metadata.is_file() { + fs::copy(entry_path, dest_path).unwrap(); + } + } + + Crate { + version: String::from("local"), + name: name.clone(), + path: dest_crate_root, + options: options.clone(), + } + }, + } + } +} + +/// Create necessary directories to run the lintcheck tool. +/// +/// # Panics +/// +/// This function panics if creating one of the dirs fails. +fn create_dirs(krate_download_dir: &Path, extract_dir: &Path) { + fs::create_dir("target/lintcheck/").unwrap_or_else(|err| { + assert_eq!( + err.kind(), + ErrorKind::AlreadyExists, + "cannot create lintcheck target dir" + ); + }); + fs::create_dir(krate_download_dir).unwrap_or_else(|err| { + assert_eq!(err.kind(), ErrorKind::AlreadyExists, "cannot create crate download dir"); + }); + fs::create_dir(extract_dir).unwrap_or_else(|err| { + assert_eq!( + err.kind(), + ErrorKind::AlreadyExists, + "cannot create crate extraction dir" + ); + }); +} diff --git a/src/tools/clippy/lintcheck/src/json.rs b/src/tools/clippy/lintcheck/src/json.rs index 43d0413c7ce..1a652927988 100644 --- a/src/tools/clippy/lintcheck/src/json.rs +++ b/src/tools/clippy/lintcheck/src/json.rs @@ -1,37 +1,50 @@ -use std::collections::HashMap; -use std::fmt::Write; use std::fs; -use std::hash::Hash; use std::path::Path; +use itertools::EitherOrBoth; +use serde::{Deserialize, Serialize}; + use crate::ClippyWarning; -/// Creates the log file output for [`crate::config::OutputFormat::Json`] -pub(crate) fn output(clippy_warnings: &[ClippyWarning]) -> String { - serde_json::to_string(&clippy_warnings).unwrap() +#[derive(Deserialize, Serialize)] +struct LintJson { + lint: String, + file_name: String, + byte_pos: (u32, u32), + rendered: String, } -fn load_warnings(path: &Path) -> Vec<ClippyWarning> { - let file = fs::read(path).unwrap_or_else(|e| panic!("failed to read {}: {e}", path.display())); - - serde_json::from_slice(&file).unwrap_or_else(|e| panic!("failed to deserialize {}: {e}", path.display())) +impl LintJson { + fn key(&self) -> impl Ord + '_ { + (self.file_name.as_str(), self.byte_pos, self.lint.as_str()) + } } -/// Group warnings by their primary span location + lint name -fn create_map(warnings: &[ClippyWarning]) -> HashMap<impl Eq + Hash + '_, Vec<&ClippyWarning>> { - let mut map = HashMap::<_, Vec<_>>::with_capacity(warnings.len()); - - for warning in warnings { - let span = warning.span(); - let key = (&warning.lint_type, &span.file_name, span.byte_start, span.byte_end); +/// Creates the log file output for [`crate::config::OutputFormat::Json`] +pub(crate) fn output(clippy_warnings: Vec<ClippyWarning>) -> String { + let mut lints: Vec<LintJson> = clippy_warnings + .into_iter() + .map(|warning| { + let span = warning.span(); + LintJson { + file_name: span.file_name.clone(), + byte_pos: (span.byte_start, span.byte_end), + lint: warning.lint, + rendered: warning.diag.rendered.unwrap(), + } + }) + .collect(); + lints.sort_by(|a, b| a.key().cmp(&b.key())); + serde_json::to_string(&lints).unwrap() +} - map.entry(key).or_default().push(warning); - } +fn load_warnings(path: &Path) -> Vec<LintJson> { + let file = fs::read(path).unwrap_or_else(|e| panic!("failed to read {}: {e}", path.display())); - map + serde_json::from_slice(&file).unwrap_or_else(|e| panic!("failed to deserialize {}: {e}", path.display())) } -fn print_warnings(title: &str, warnings: &[&ClippyWarning]) { +fn print_warnings(title: &str, warnings: &[LintJson]) { if warnings.is_empty() { return; } @@ -39,31 +52,20 @@ fn print_warnings(title: &str, warnings: &[&ClippyWarning]) { println!("### {title}"); println!("```"); for warning in warnings { - print!("{}", warning.diag); + print!("{}", warning.rendered); } println!("```"); } -fn print_changed_diff(changed: &[(&[&ClippyWarning], &[&ClippyWarning])]) { - fn render(warnings: &[&ClippyWarning]) -> String { - let mut rendered = String::new(); - for warning in warnings { - write!(&mut rendered, "{}", warning.diag).unwrap(); - } - rendered - } - +fn print_changed_diff(changed: &[(LintJson, LintJson)]) { if changed.is_empty() { return; } println!("### Changed"); println!("```diff"); - for &(old, new) in changed { - let old_rendered = render(old); - let new_rendered = render(new); - - for change in diff::lines(&old_rendered, &new_rendered) { + for (old, new) in changed { + for change in diff::lines(&old.rendered, &new.rendered) { use diff::Result::{Both, Left, Right}; match change { @@ -86,26 +88,19 @@ pub(crate) fn diff(old_path: &Path, new_path: &Path) { let old_warnings = load_warnings(old_path); let new_warnings = load_warnings(new_path); - let old_map = create_map(&old_warnings); - let new_map = create_map(&new_warnings); - let mut added = Vec::new(); let mut removed = Vec::new(); let mut changed = Vec::new(); - for (key, new) in &new_map { - if let Some(old) = old_map.get(key) { - if old != new { - changed.push((old.as_slice(), new.as_slice())); - } - } else { - added.extend(new); - } - } - - for (key, old) in &old_map { - if !new_map.contains_key(key) { - removed.extend(old); + for change in itertools::merge_join_by(old_warnings, new_warnings, |old, new| old.key().cmp(&new.key())) { + match change { + EitherOrBoth::Both(old, new) => { + if old.rendered != new.rendered { + changed.push((old, new)); + } + }, + EitherOrBoth::Left(old) => removed.push(old), + EitherOrBoth::Right(new) => added.push(new), } } diff --git a/src/tools/clippy/lintcheck/src/main.rs b/src/tools/clippy/lintcheck/src/main.rs index ec72e0eb5dc..e37ffab13ac 100644 --- a/src/tools/clippy/lintcheck/src/main.rs +++ b/src/tools/clippy/lintcheck/src/main.rs @@ -5,6 +5,7 @@ // When a new lint is introduced, we can search the results for new warnings and check for false // positives. +#![feature(iter_collect_into)] #![warn( trivial_casts, trivial_numeric_casts, @@ -12,84 +13,38 @@ unused_lifetimes, unused_qualifications )] -#![allow(clippy::collapsible_else_if, clippy::needless_borrows_for_generic_args)] +#![allow( + clippy::collapsible_else_if, + clippy::needless_borrows_for_generic_args, + clippy::module_name_repetitions +)] mod config; mod driver; +mod input; mod json; +mod output; mod popular_crates; mod recursive; use crate::config::{Commands, LintcheckConfig, OutputFormat}; use crate::recursive::LintcheckServer; -use std::collections::{HashMap, HashSet}; use std::env::consts::EXE_SUFFIX; -use std::fmt::{self, Display, Write as _}; -use std::hash::Hash; -use std::io::{self, ErrorKind}; +use std::io::{self}; use std::path::{Path, PathBuf}; -use std::process::{Command, ExitStatus, Stdio}; +use std::process::{Command, Stdio}; use std::sync::atomic::{AtomicUsize, Ordering}; -use std::time::Duration; -use std::{env, fs, thread}; +use std::{env, fs}; -use cargo_metadata::diagnostic::{Diagnostic, DiagnosticSpan}; use cargo_metadata::Message; +use input::{read_crates, CrateSource}; +use output::{ClippyCheckOutput, ClippyWarning, RustcIce}; use rayon::prelude::*; -use serde::{Deserialize, Serialize}; -use walkdir::{DirEntry, WalkDir}; const LINTCHECK_DOWNLOADS: &str = "target/lintcheck/downloads"; const LINTCHECK_SOURCES: &str = "target/lintcheck/sources"; -/// List of sources to check, loaded from a .toml file -#[derive(Debug, Deserialize)] -struct SourceList { - crates: HashMap<String, TomlCrate>, - #[serde(default)] - recursive: RecursiveOptions, -} - -#[derive(Debug, Deserialize, Default)] -struct RecursiveOptions { - ignore: HashSet<String>, -} - -/// A crate source stored inside the .toml -/// will be translated into on one of the `CrateSource` variants -#[derive(Debug, Deserialize)] -struct TomlCrate { - name: String, - versions: Option<Vec<String>>, - git_url: Option<String>, - git_hash: Option<String>, - path: Option<String>, - options: Option<Vec<String>>, -} - -/// Represents an archive we download from crates.io, or a git repo, or a local repo/folder -/// Once processed (downloaded/extracted/cloned/copied...), this will be translated into a `Crate` -#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Ord, PartialOrd)] -enum CrateSource { - CratesIo { - name: String, - version: String, - options: Option<Vec<String>>, - }, - Git { - name: String, - url: String, - commit: String, - options: Option<Vec<String>>, - }, - Path { - name: String, - path: PathBuf, - options: Option<Vec<String>>, - }, -} - /// Represents the actual source code of a crate that we ran "cargo clippy" on #[derive(Debug)] struct Crate { @@ -100,248 +55,6 @@ struct Crate { options: Option<Vec<String>>, } -/// A single emitted output from clippy being executed on a crate. It may either be a -/// `ClippyWarning`, or a `RustcIce` caused by a panic within clippy. A crate may have many -/// `ClippyWarning`s but a maximum of one `RustcIce` (at which point clippy halts execution). -#[derive(Debug)] -enum ClippyCheckOutput { - ClippyWarning(ClippyWarning), - RustcIce(RustcIce), -} - -#[derive(Debug)] -struct RustcIce { - pub crate_name: String, - pub ice_content: String, -} - -impl Display for RustcIce { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - write!( - f, - "{}:\n{}\n========================================\n", - self.crate_name, self.ice_content - ) - } -} - -impl RustcIce { - pub fn from_stderr_and_status(crate_name: &str, status: ExitStatus, stderr: &str) -> Option<Self> { - if status.code().unwrap_or(0) == 101 - /* ice exit status */ - { - Some(Self { - crate_name: crate_name.to_owned(), - ice_content: stderr.to_owned(), - }) - } else { - None - } - } -} - -/// A single warning that clippy issued while checking a `Crate` -#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize)] -struct ClippyWarning { - crate_name: String, - crate_version: String, - lint_type: String, - diag: Diagnostic, -} - -#[allow(unused)] -impl ClippyWarning { - fn new(mut diag: Diagnostic, crate_name: &str, crate_version: &str) -> Option<Self> { - let lint_type = diag.code.clone()?.code; - if !(lint_type.contains("clippy") || diag.message.contains("clippy")) - || diag.message.contains("could not read cargo metadata") - { - return None; - } - - // --recursive bypasses cargo so we have to strip the rendered output ourselves - let rendered = diag.rendered.as_mut().unwrap(); - *rendered = strip_ansi_escapes::strip_str(&rendered); - - Some(Self { - crate_name: crate_name.to_owned(), - crate_version: crate_version.to_owned(), - lint_type, - diag, - }) - } - - fn span(&self) -> &DiagnosticSpan { - self.diag.spans.iter().find(|span| span.is_primary).unwrap() - } - - fn to_output(&self, format: OutputFormat) -> String { - let span = self.span(); - let mut file = span.file_name.clone(); - let file_with_pos = format!("{file}:{}:{}", span.line_start, span.line_end); - match format { - OutputFormat::Text => format!("{file_with_pos} {} \"{}\"\n", self.lint_type, self.diag.message), - OutputFormat::Markdown => { - if file.starts_with("target") { - file.insert_str(0, "../"); - } - - let mut output = String::from("| "); - write!(output, "[`{file_with_pos}`]({file}#L{})", span.line_start).unwrap(); - write!(output, r#" | `{:<50}` | "{}" |"#, self.lint_type, self.diag.message).unwrap(); - output.push('\n'); - output - }, - OutputFormat::Json => unreachable!("JSON output is handled via serde"), - } - } -} - -#[allow(clippy::result_large_err)] -fn get(path: &str) -> Result<ureq::Response, ureq::Error> { - const MAX_RETRIES: u8 = 4; - let mut retries = 0; - loop { - match ureq::get(path).call() { - Ok(res) => return Ok(res), - Err(e) if retries >= MAX_RETRIES => return Err(e), - Err(ureq::Error::Transport(e)) => eprintln!("Error: {e}"), - Err(e) => return Err(e), - } - eprintln!("retrying in {retries} seconds..."); - thread::sleep(Duration::from_secs(u64::from(retries))); - retries += 1; - } -} - -impl CrateSource { - /// Makes the sources available on the disk for clippy to check. - /// Clones a git repo and checks out the specified commit or downloads a crate from crates.io or - /// copies a local folder - fn download_and_extract(&self) -> Crate { - match self { - CrateSource::CratesIo { name, version, options } => { - let extract_dir = PathBuf::from(LINTCHECK_SOURCES); - let krate_download_dir = PathBuf::from(LINTCHECK_DOWNLOADS); - - // url to download the crate from crates.io - let url = format!("https://crates.io/api/v1/crates/{name}/{version}/download"); - println!("Downloading and extracting {name} {version} from {url}"); - create_dirs(&krate_download_dir, &extract_dir); - - let krate_file_path = krate_download_dir.join(format!("{name}-{version}.crate.tar.gz")); - // don't download/extract if we already have done so - if !krate_file_path.is_file() { - // create a file path to download and write the crate data into - let mut krate_dest = fs::File::create(&krate_file_path).unwrap(); - let mut krate_req = get(&url).unwrap().into_reader(); - // copy the crate into the file - io::copy(&mut krate_req, &mut krate_dest).unwrap(); - - // unzip the tarball - let ungz_tar = flate2::read::GzDecoder::new(fs::File::open(&krate_file_path).unwrap()); - // extract the tar archive - let mut archive = tar::Archive::new(ungz_tar); - archive.unpack(&extract_dir).expect("Failed to extract!"); - } - // crate is extracted, return a new Krate object which contains the path to the extracted - // sources that clippy can check - Crate { - version: version.clone(), - name: name.clone(), - path: extract_dir.join(format!("{name}-{version}/")), - options: options.clone(), - } - }, - CrateSource::Git { - name, - url, - commit, - options, - } => { - let repo_path = { - let mut repo_path = PathBuf::from(LINTCHECK_SOURCES); - // add a -git suffix in case we have the same crate from crates.io and a git repo - repo_path.push(format!("{name}-git")); - repo_path - }; - // clone the repo if we have not done so - if !repo_path.is_dir() { - println!("Cloning {url} and checking out {commit}"); - if !Command::new("git") - .arg("clone") - .arg(url) - .arg(&repo_path) - .status() - .expect("Failed to clone git repo!") - .success() - { - eprintln!("Failed to clone {url} into {}", repo_path.display()); - } - } - // check out the commit/branch/whatever - if !Command::new("git") - .args(["-c", "advice.detachedHead=false"]) - .arg("checkout") - .arg(commit) - .current_dir(&repo_path) - .status() - .expect("Failed to check out commit") - .success() - { - eprintln!("Failed to checkout {commit} of repo at {}", repo_path.display()); - } - - Crate { - version: commit.clone(), - name: name.clone(), - path: repo_path, - options: options.clone(), - } - }, - CrateSource::Path { name, path, options } => { - fn is_cache_dir(entry: &DirEntry) -> bool { - fs::read(entry.path().join("CACHEDIR.TAG")) - .map(|x| x.starts_with(b"Signature: 8a477f597d28d172789f06886806bc55")) - .unwrap_or(false) - } - - // copy path into the dest_crate_root but skip directories that contain a CACHEDIR.TAG file. - // The target/ directory contains a CACHEDIR.TAG file so it is the most commonly skipped directory - // as a result of this filter. - let dest_crate_root = PathBuf::from(LINTCHECK_SOURCES).join(name); - if dest_crate_root.exists() { - println!("Deleting existing directory at {dest_crate_root:?}"); - fs::remove_dir_all(&dest_crate_root).unwrap(); - } - - println!("Copying {path:?} to {dest_crate_root:?}"); - - for entry in WalkDir::new(path).into_iter().filter_entry(|e| !is_cache_dir(e)) { - let entry = entry.unwrap(); - let entry_path = entry.path(); - let relative_entry_path = entry_path.strip_prefix(path).unwrap(); - let dest_path = dest_crate_root.join(relative_entry_path); - let metadata = entry_path.symlink_metadata().unwrap(); - - if metadata.is_dir() { - fs::create_dir(dest_path).unwrap(); - } else if metadata.is_file() { - fs::copy(entry_path, dest_path).unwrap(); - } - } - - Crate { - version: String::from("local"), - name: name.clone(), - path: dest_crate_root, - options: options.clone(), - } - }, - } - } -} - impl Crate { /// Run `cargo clippy` on the `Crate` and collect and return all the lint warnings that clippy /// issued @@ -352,7 +65,7 @@ impl Crate { target_dir_index: &AtomicUsize, total_crates_to_lint: usize, config: &LintcheckConfig, - lint_filter: &[String], + lint_levels_args: &[String], server: &Option<LintcheckServer>, ) -> Vec<ClippyCheckOutput> { // advance the atomic index by one @@ -398,16 +111,9 @@ impl Crate { for opt in options { clippy_args.push(opt); } - } else { - clippy_args.extend(["-Wclippy::pedantic", "-Wclippy::cargo"]); } - if lint_filter.is_empty() { - clippy_args.push("--cap-lints=warn"); - } else { - clippy_args.push("--cap-lints=allow"); - clippy_args.extend(lint_filter.iter().map(String::as_str)); - } + clippy_args.extend(lint_levels_args.iter().map(String::as_str)); let mut cmd = Command::new("cargo"); cmd.arg(if config.fix { "fix" } else { "check" }) @@ -479,7 +185,7 @@ impl Crate { // get all clippy warnings and ICEs let mut entries: Vec<ClippyCheckOutput> = Message::parse_stream(stdout.as_bytes()) .filter_map(|msg| match msg { - Ok(Message::CompilerMessage(message)) => ClippyWarning::new(message.message, &self.name, &self.version), + Ok(Message::CompilerMessage(message)) => ClippyWarning::new(message.message), _ => None, }) .map(ClippyCheckOutput::ClippyWarning) @@ -509,96 +215,6 @@ fn build_clippy() -> String { String::from_utf8_lossy(&output.stdout).into_owned() } -/// Read a `lintcheck_crates.toml` file -fn read_crates(toml_path: &Path) -> (Vec<CrateSource>, RecursiveOptions) { - let toml_content: String = - fs::read_to_string(toml_path).unwrap_or_else(|_| panic!("Failed to read {}", toml_path.display())); - let crate_list: SourceList = - toml::from_str(&toml_content).unwrap_or_else(|e| panic!("Failed to parse {}: \n{e}", toml_path.display())); - // parse the hashmap of the toml file into a list of crates - let tomlcrates: Vec<TomlCrate> = crate_list.crates.into_values().collect(); - - // flatten TomlCrates into CrateSources (one TomlCrates may represent several versions of a crate => - // multiple Cratesources) - let mut crate_sources = Vec::new(); - for tk in tomlcrates { - if let Some(ref path) = tk.path { - crate_sources.push(CrateSource::Path { - name: tk.name.clone(), - path: PathBuf::from(path), - options: tk.options.clone(), - }); - } else if let Some(ref versions) = tk.versions { - // if we have multiple versions, save each one - for ver in versions { - crate_sources.push(CrateSource::CratesIo { - name: tk.name.clone(), - version: ver.to_string(), - options: tk.options.clone(), - }); - } - } else if tk.git_url.is_some() && tk.git_hash.is_some() { - // otherwise, we should have a git source - crate_sources.push(CrateSource::Git { - name: tk.name.clone(), - url: tk.git_url.clone().unwrap(), - commit: tk.git_hash.clone().unwrap(), - options: tk.options.clone(), - }); - } else { - panic!("Invalid crate source: {tk:?}"); - } - - // if we have a version as well as a git data OR only one git data, something is funky - if tk.versions.is_some() && (tk.git_url.is_some() || tk.git_hash.is_some()) - || tk.git_hash.is_some() != tk.git_url.is_some() - { - eprintln!("tomlkrate: {tk:?}"); - assert_eq!( - tk.git_hash.is_some(), - tk.git_url.is_some(), - "Error: Encountered TomlCrate with only one of git_hash and git_url!" - ); - assert!( - tk.path.is_none() || (tk.git_hash.is_none() && tk.versions.is_none()), - "Error: TomlCrate can only have one of 'git_.*', 'version' or 'path' fields" - ); - unreachable!("Failed to translate TomlCrate into CrateSource!"); - } - } - // sort the crates - crate_sources.sort(); - - (crate_sources, crate_list.recursive) -} - -/// Generate a short list of occurring lints-types and their count -fn gather_stats(warnings: &[ClippyWarning]) -> (String, HashMap<&String, usize>) { - // count lint type occurrences - let mut counter: HashMap<&String, usize> = HashMap::new(); - warnings - .iter() - .for_each(|wrn| *counter.entry(&wrn.lint_type).or_insert(0) += 1); - - // collect into a tupled list for sorting - let mut stats: Vec<(&&String, &usize)> = counter.iter().collect(); - // sort by "000{count} {clippy::lintname}" - // to not have a lint with 200 and 2 warnings take the same spot - stats.sort_by_key(|(lint, count)| format!("{count:0>4}, {lint}")); - - let mut header = String::from("| lint | count |\n"); - header.push_str("| -------------------------------------------------- | ----- |\n"); - let stats_string = stats - .iter() - .map(|(lint, count)| format!("| {lint:<50} | {count:>4} |\n")) - .fold(header, |mut table, line| { - table.push_str(&line); - table - }); - - (stats_string, counter) -} - fn main() { // We're being executed as a `RUSTC_WRAPPER` as part of `--recursive` if let Ok(addr) = env::var("LINTCHECK_SERVER") { @@ -638,15 +254,39 @@ fn lintcheck(config: LintcheckConfig) { let (crates, recursive_options) = read_crates(&config.sources_toml_path); let counter = AtomicUsize::new(1); - let lint_filter: Vec<String> = config - .lint_filter - .iter() - .map(|filter| { - let mut filter = filter.clone(); - filter.insert_str(0, "--force-warn="); - filter - }) - .collect(); + let mut lint_level_args: Vec<String> = vec![]; + if config.lint_filter.is_empty() { + lint_level_args.push("--cap-lints=warn".to_string()); + + // Set allow-by-default to warn + if config.warn_all { + [ + "clippy::cargo", + "clippy::nursery", + "clippy::pedantic", + "clippy::restriction", + ] + .iter() + .map(|group| format!("--warn={group}")) + .collect_into(&mut lint_level_args); + } else { + ["clippy::cargo", "clippy::pedantic"] + .iter() + .map(|group| format!("--warn={group}")) + .collect_into(&mut lint_level_args); + } + } else { + lint_level_args.push("--cap-lints=allow".to_string()); + config + .lint_filter + .iter() + .map(|filter| { + let mut filter = filter.clone(); + filter.insert_str(0, "--force-warn="); + filter + }) + .collect_into(&mut lint_level_args); + }; let crates: Vec<Crate> = crates .into_iter() @@ -698,7 +338,7 @@ fn lintcheck(config: LintcheckConfig) { &counter, crates.len(), &config, - &lint_filter, + &lint_level_args, &server, ) }) @@ -727,7 +367,9 @@ fn lintcheck(config: LintcheckConfig) { } let text = match config.format { - OutputFormat::Text | OutputFormat::Markdown => output(&warnings, &raw_ices, clippy_ver, &config), + OutputFormat::Text | OutputFormat::Markdown => { + output::summarize_and_print_changes(&warnings, &raw_ices, clippy_ver, &config) + }, OutputFormat::Json => { if !raw_ices.is_empty() { for ice in raw_ices { @@ -736,7 +378,7 @@ fn lintcheck(config: LintcheckConfig) { panic!("Some crates ICEd"); } - json::output(&warnings) + json::output(warnings) }, }; @@ -745,135 +387,6 @@ fn lintcheck(config: LintcheckConfig) { fs::write(&config.lintcheck_results_path, text).unwrap(); } -/// Creates the log file output for [`OutputFormat::Text`] and [`OutputFormat::Markdown`] -fn output(warnings: &[ClippyWarning], ices: &[RustcIce], clippy_ver: String, config: &LintcheckConfig) -> String { - // generate some stats - let (stats_formatted, new_stats) = gather_stats(warnings); - let old_stats = read_stats_from_file(&config.lintcheck_results_path); - - let mut all_msgs: Vec<String> = warnings.iter().map(|warn| warn.to_output(config.format)).collect(); - all_msgs.sort(); - all_msgs.push("\n\n### Stats:\n\n".into()); - all_msgs.push(stats_formatted); - - let mut text = clippy_ver; // clippy version number on top - text.push_str("\n### Reports\n\n"); - if config.format == OutputFormat::Markdown { - text.push_str("| file | lint | message |\n"); - text.push_str("| --- | --- | --- |\n"); - } - write!(text, "{}", all_msgs.join("")).unwrap(); - text.push_str("\n\n### ICEs:\n"); - for ice in ices { - writeln!(text, "{ice}").unwrap(); - } - - print_stats(old_stats, new_stats, &config.lint_filter); - - text -} - -/// read the previous stats from the lintcheck-log file -fn read_stats_from_file(file_path: &Path) -> HashMap<String, usize> { - let file_content: String = match fs::read_to_string(file_path).ok() { - Some(content) => content, - None => { - return HashMap::new(); - }, - }; - - let lines: Vec<String> = file_content.lines().map(ToString::to_string).collect(); - - lines - .iter() - .skip_while(|line| line.as_str() != "### Stats:") - // Skipping the table header and the `Stats:` label - .skip(4) - .take_while(|line| line.starts_with("| ")) - .filter_map(|line| { - let mut spl = line.split('|'); - // Skip the first `|` symbol - spl.next(); - if let (Some(lint), Some(count)) = (spl.next(), spl.next()) { - Some((lint.trim().to_string(), count.trim().parse::<usize>().unwrap())) - } else { - None - } - }) - .collect::<HashMap<String, usize>>() -} - -/// print how lint counts changed between runs -fn print_stats(old_stats: HashMap<String, usize>, new_stats: HashMap<&String, usize>, lint_filter: &[String]) { - let same_in_both_hashmaps = old_stats - .iter() - .filter(|(old_key, old_val)| new_stats.get::<&String>(old_key) == Some(old_val)) - .map(|(k, v)| (k.to_string(), *v)) - .collect::<Vec<(String, usize)>>(); - - let mut old_stats_deduped = old_stats; - let mut new_stats_deduped = new_stats; - - // remove duplicates from both hashmaps - for (k, v) in &same_in_both_hashmaps { - assert!(old_stats_deduped.remove(k) == Some(*v)); - assert!(new_stats_deduped.remove(k) == Some(*v)); - } - - println!("\nStats:"); - - // list all new counts (key is in new stats but not in old stats) - new_stats_deduped - .iter() - .filter(|(new_key, _)| !old_stats_deduped.contains_key::<str>(new_key)) - .for_each(|(new_key, new_value)| { - println!("{new_key} 0 => {new_value}"); - }); - - // list all changed counts (key is in both maps but value differs) - new_stats_deduped - .iter() - .filter(|(new_key, _new_val)| old_stats_deduped.contains_key::<str>(new_key)) - .for_each(|(new_key, new_val)| { - let old_val = old_stats_deduped.get::<str>(new_key).unwrap(); - println!("{new_key} {old_val} => {new_val}"); - }); - - // list all gone counts (key is in old status but not in new stats) - old_stats_deduped - .iter() - .filter(|(old_key, _)| !new_stats_deduped.contains_key::<&String>(old_key)) - .filter(|(old_key, _)| lint_filter.is_empty() || lint_filter.contains(old_key)) - .for_each(|(old_key, old_value)| { - println!("{old_key} {old_value} => 0"); - }); -} - -/// Create necessary directories to run the lintcheck tool. -/// -/// # Panics -/// -/// This function panics if creating one of the dirs fails. -fn create_dirs(krate_download_dir: &Path, extract_dir: &Path) { - fs::create_dir("target/lintcheck/").unwrap_or_else(|err| { - assert_eq!( - err.kind(), - ErrorKind::AlreadyExists, - "cannot create lintcheck target dir" - ); - }); - fs::create_dir(krate_download_dir).unwrap_or_else(|err| { - assert_eq!(err.kind(), ErrorKind::AlreadyExists, "cannot create crate download dir"); - }); - fs::create_dir(extract_dir).unwrap_or_else(|err| { - assert_eq!( - err.kind(), - ErrorKind::AlreadyExists, - "cannot create crate extraction dir" - ); - }); -} - /// Returns the path to the Clippy project directory #[must_use] fn clippy_project_root() -> &'static Path { diff --git a/src/tools/clippy/lintcheck/src/output.rs b/src/tools/clippy/lintcheck/src/output.rs new file mode 100644 index 00000000000..4bfc554ef9e --- /dev/null +++ b/src/tools/clippy/lintcheck/src/output.rs @@ -0,0 +1,235 @@ +use cargo_metadata::diagnostic::{Diagnostic, DiagnosticSpan}; +use serde::{Deserialize, Serialize}; +use std::collections::HashMap; +use std::fmt::{self, Write as _}; +use std::fs; +use std::path::Path; +use std::process::ExitStatus; + +use crate::config::{LintcheckConfig, OutputFormat}; + +/// A single emitted output from clippy being executed on a crate. It may either be a +/// `ClippyWarning`, or a `RustcIce` caused by a panic within clippy. A crate may have many +/// `ClippyWarning`s but a maximum of one `RustcIce` (at which point clippy halts execution). +#[derive(Debug)] +pub enum ClippyCheckOutput { + ClippyWarning(ClippyWarning), + RustcIce(RustcIce), +} + +#[derive(Debug)] +pub struct RustcIce { + pub crate_name: String, + pub ice_content: String, +} + +impl fmt::Display for RustcIce { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!( + f, + "{}:\n{}\n========================================\n", + self.crate_name, self.ice_content + ) + } +} + +impl RustcIce { + pub fn from_stderr_and_status(crate_name: &str, status: ExitStatus, stderr: &str) -> Option<Self> { + if status.code().unwrap_or(0) == 101 + /* ice exit status */ + { + Some(Self { + crate_name: crate_name.to_owned(), + ice_content: stderr.to_owned(), + }) + } else { + None + } + } +} + +/// A single warning that clippy issued while checking a `Crate` +#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize)] +pub struct ClippyWarning { + pub lint: String, + pub diag: Diagnostic, +} + +#[allow(unused)] +impl ClippyWarning { + pub fn new(mut diag: Diagnostic) -> Option<Self> { + let lint = diag.code.clone()?.code; + if !(lint.contains("clippy") || diag.message.contains("clippy")) + || diag.message.contains("could not read cargo metadata") + { + return None; + } + + // --recursive bypasses cargo so we have to strip the rendered output ourselves + let rendered = diag.rendered.as_mut().unwrap(); + *rendered = strip_ansi_escapes::strip_str(&rendered); + + Some(Self { lint, diag }) + } + + pub fn span(&self) -> &DiagnosticSpan { + self.diag.spans.iter().find(|span| span.is_primary).unwrap() + } + + pub fn to_output(&self, format: OutputFormat) -> String { + let span = self.span(); + let mut file = span.file_name.clone(); + let file_with_pos = format!("{file}:{}:{}", span.line_start, span.line_end); + match format { + OutputFormat::Text => format!("{file_with_pos} {} \"{}\"\n", self.lint, self.diag.message), + OutputFormat::Markdown => { + if file.starts_with("target") { + file.insert_str(0, "../"); + } + + let mut output = String::from("| "); + write!(output, "[`{file_with_pos}`]({file}#L{})", span.line_start).unwrap(); + write!(output, r#" | `{:<50}` | "{}" |"#, self.lint, self.diag.message).unwrap(); + output.push('\n'); + output + }, + OutputFormat::Json => unreachable!("JSON output is handled via serde"), + } + } +} + +/// Creates the log file output for [`OutputFormat::Text`] and [`OutputFormat::Markdown`] +pub fn summarize_and_print_changes( + warnings: &[ClippyWarning], + ices: &[RustcIce], + clippy_ver: String, + config: &LintcheckConfig, +) -> String { + // generate some stats + let (stats_formatted, new_stats) = gather_stats(warnings); + let old_stats = read_stats_from_file(&config.lintcheck_results_path); + + let mut all_msgs: Vec<String> = warnings.iter().map(|warn| warn.to_output(config.format)).collect(); + all_msgs.sort(); + all_msgs.push("\n\n### Stats:\n\n".into()); + all_msgs.push(stats_formatted); + + let mut text = clippy_ver; // clippy version number on top + text.push_str("\n### Reports\n\n"); + if config.format == OutputFormat::Markdown { + text.push_str("| file | lint | message |\n"); + text.push_str("| --- | --- | --- |\n"); + } + write!(text, "{}", all_msgs.join("")).unwrap(); + text.push_str("\n\n### ICEs:\n"); + for ice in ices { + writeln!(text, "{ice}").unwrap(); + } + + print_stats(old_stats, new_stats, &config.lint_filter); + + text +} + +/// Generate a short list of occurring lints-types and their count +fn gather_stats(warnings: &[ClippyWarning]) -> (String, HashMap<&String, usize>) { + // count lint type occurrences + let mut counter: HashMap<&String, usize> = HashMap::new(); + warnings + .iter() + .for_each(|wrn| *counter.entry(&wrn.lint).or_insert(0) += 1); + + // collect into a tupled list for sorting + let mut stats: Vec<(&&String, &usize)> = counter.iter().collect(); + // sort by "000{count} {clippy::lintname}" + // to not have a lint with 200 and 2 warnings take the same spot + stats.sort_by_key(|(lint, count)| format!("{count:0>4}, {lint}")); + + let mut header = String::from("| lint | count |\n"); + header.push_str("| -------------------------------------------------- | ----- |\n"); + let stats_string = stats + .iter() + .map(|(lint, count)| format!("| {lint:<50} | {count:>4} |\n")) + .fold(header, |mut table, line| { + table.push_str(&line); + table + }); + + (stats_string, counter) +} + +/// read the previous stats from the lintcheck-log file +fn read_stats_from_file(file_path: &Path) -> HashMap<String, usize> { + let file_content: String = match fs::read_to_string(file_path).ok() { + Some(content) => content, + None => { + return HashMap::new(); + }, + }; + + let lines: Vec<String> = file_content.lines().map(ToString::to_string).collect(); + + lines + .iter() + .skip_while(|line| line.as_str() != "### Stats:") + // Skipping the table header and the `Stats:` label + .skip(4) + .take_while(|line| line.starts_with("| ")) + .filter_map(|line| { + let mut spl = line.split('|'); + // Skip the first `|` symbol + spl.next(); + if let (Some(lint), Some(count)) = (spl.next(), spl.next()) { + Some((lint.trim().to_string(), count.trim().parse::<usize>().unwrap())) + } else { + None + } + }) + .collect::<HashMap<String, usize>>() +} + +/// print how lint counts changed between runs +fn print_stats(old_stats: HashMap<String, usize>, new_stats: HashMap<&String, usize>, lint_filter: &[String]) { + let same_in_both_hashmaps = old_stats + .iter() + .filter(|(old_key, old_val)| new_stats.get::<&String>(old_key) == Some(old_val)) + .map(|(k, v)| (k.to_string(), *v)) + .collect::<Vec<(String, usize)>>(); + + let mut old_stats_deduped = old_stats; + let mut new_stats_deduped = new_stats; + + // remove duplicates from both hashmaps + for (k, v) in &same_in_both_hashmaps { + assert!(old_stats_deduped.remove(k) == Some(*v)); + assert!(new_stats_deduped.remove(k) == Some(*v)); + } + + println!("\nStats:"); + + // list all new counts (key is in new stats but not in old stats) + new_stats_deduped + .iter() + .filter(|(new_key, _)| !old_stats_deduped.contains_key::<str>(new_key)) + .for_each(|(new_key, new_value)| { + println!("{new_key} 0 => {new_value}"); + }); + + // list all changed counts (key is in both maps but value differs) + new_stats_deduped + .iter() + .filter(|(new_key, _new_val)| old_stats_deduped.contains_key::<str>(new_key)) + .for_each(|(new_key, new_val)| { + let old_val = old_stats_deduped.get::<str>(new_key).unwrap(); + println!("{new_key} {old_val} => {new_val}"); + }); + + // list all gone counts (key is in old status but not in new stats) + old_stats_deduped + .iter() + .filter(|(old_key, _)| !new_stats_deduped.contains_key::<&String>(old_key)) + .filter(|(old_key, _)| lint_filter.is_empty() || lint_filter.contains(old_key)) + .for_each(|(old_key, old_value)| { + println!("{old_key} {old_value} => 0"); + }); +} diff --git a/src/tools/clippy/lintcheck/src/popular_crates.rs b/src/tools/clippy/lintcheck/src/popular_crates.rs index 880a8bd81f0..ad8fc440c42 100644 --- a/src/tools/clippy/lintcheck/src/popular_crates.rs +++ b/src/tools/clippy/lintcheck/src/popular_crates.rs @@ -44,7 +44,7 @@ pub(crate) fn fetch(output: PathBuf, number: usize) -> Result<(), Box<dyn Error> let mut out = "[crates]\n".to_string(); for Crate { name, max_version } in crates { - writeln!(out, "{name} = {{ name = '{name}', versions = ['{max_version}'] }}").unwrap(); + writeln!(out, "{name} = {{ name = '{name}', version = '{max_version}' }}").unwrap(); } fs::write(output, out)?; diff --git a/src/tools/clippy/lintcheck/src/recursive.rs b/src/tools/clippy/lintcheck/src/recursive.rs index 994fa3c3b23..373ca6f9918 100644 --- a/src/tools/clippy/lintcheck/src/recursive.rs +++ b/src/tools/clippy/lintcheck/src/recursive.rs @@ -3,7 +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::{ClippyWarning, RecursiveOptions}; +use crate::input::RecursiveOptions; +use crate::ClippyWarning; use std::collections::HashSet; use std::io::{BufRead, BufReader, Read, Write}; @@ -19,8 +20,6 @@ use serde::{Deserialize, Serialize}; #[derive(Debug, Eq, Hash, PartialEq, Clone, Serialize, Deserialize)] pub(crate) struct DriverInfo { pub package_name: String, - pub crate_name: String, - pub version: String, } pub(crate) fn serialize_line<T, W>(value: &T, writer: &mut W) @@ -65,7 +64,7 @@ fn process_stream( let messages = stderr .lines() .filter_map(|json_msg| serde_json::from_str::<Diagnostic>(json_msg).ok()) - .filter_map(|diag| ClippyWarning::new(diag, &driver_info.package_name, &driver_info.version)); + .filter_map(ClippyWarning::new); for message in messages { sender.send(message).unwrap(); diff --git a/src/tools/clippy/rust-toolchain b/src/tools/clippy/rust-toolchain index 72b50d59f7e..a61c22c59f9 100644 --- a/src/tools/clippy/rust-toolchain +++ b/src/tools/clippy/rust-toolchain @@ -1,3 +1,4 @@ [toolchain] -channel = "nightly-2024-06-27" +channel = "nightly-2024-07-11" components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] +profile = "minimal" diff --git a/src/tools/clippy/tests/ui-internal/disallow_span_lint.stderr b/src/tools/clippy/tests/ui-internal/disallow_span_lint.stderr index 1be4b665bcb..66eda44f745 100644 --- a/src/tools/clippy/tests/ui-internal/disallow_span_lint.stderr +++ b/src/tools/clippy/tests/ui-internal/disallow_span_lint.stderr @@ -1,22 +1,18 @@ error: use of a disallowed method `rustc_lint::context::LintContext::span_lint` - --> tests/ui-internal/disallow_span_lint.rs:14:5 + --> tests/ui-internal/disallow_span_lint.rs:14:8 | -LL | / cx.span_lint(lint, span, |lint| { -LL | | lint.primary_message(msg); -LL | | }); - | |______^ +LL | cx.span_lint(lint, span, |lint| { + | ^^^^^^^^^ | = note: this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead (from clippy.toml) = note: `-D clippy::disallowed-methods` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::disallowed_methods)]` error: use of a disallowed method `rustc_middle::ty::context::TyCtxt::node_span_lint` - --> tests/ui-internal/disallow_span_lint.rs:20:5 + --> tests/ui-internal/disallow_span_lint.rs:20:9 | -LL | / tcx.node_span_lint(lint, hir_id, span, |lint| { -LL | | lint.primary_message(msg); -LL | | }); - | |______^ +LL | tcx.node_span_lint(lint, hir_id, span, |lint| { + | ^^^^^^^^^^^^^^ | = note: this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint_hir*` functions instead (from clippy.toml) diff --git a/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr b/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr index a74d8757e4a..016ee502c24 100644 --- a/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr +++ b/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr @@ -1,4 +1,4 @@ -error: `std::string::String` may not be held across an `await` point per `clippy.toml` +error: `std::string::String` may not be held across an await point per `clippy.toml` --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:5:9 | LL | let _x = String::from("hello"); @@ -8,13 +8,13 @@ LL | let _x = String::from("hello"); = note: `-D clippy::await-holding-invalid-type` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::await_holding_invalid_type)]` -error: `std::net::Ipv4Addr` may not be held across an `await` point per `clippy.toml` +error: `std::net::Ipv4Addr` may not be held across an await point per `clippy.toml` --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:10:9 | LL | let x = Ipv4Addr::new(127, 0, 0, 1); | ^ -error: `std::string::String` may not be held across an `await` point per `clippy.toml` +error: `std::string::String` may not be held across an await point per `clippy.toml` --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:33:13 | LL | let _x = String::from("hi!"); diff --git a/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/clippy.toml b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/clippy.toml new file mode 100644 index 00000000000..cda8d17eed4 --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/clippy.toml @@ -0,0 +1 @@ +avoid-breaking-exported-api = false diff --git a/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.fixed b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.fixed new file mode 100644 index 00000000000..40556ca5410 --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.fixed @@ -0,0 +1,10 @@ +#![warn(clippy::needless_pass_by_ref_mut)] +#![allow(clippy::ptr_arg)] + +// Should warn +pub fn pub_foo(s: &Vec<u32>, b: &u32, x: &mut u32) { + //~^ ERROR: this argument is a mutable reference, but not used mutably + *x += *b + s.len() as u32; +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.rs b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.rs new file mode 100644 index 00000000000..bbc63ceb15a --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.rs @@ -0,0 +1,10 @@ +#![warn(clippy::needless_pass_by_ref_mut)] +#![allow(clippy::ptr_arg)] + +// Should warn +pub fn pub_foo(s: &mut Vec<u32>, b: &u32, x: &mut u32) { + //~^ ERROR: this argument is a mutable reference, but not used mutably + *x += *b + s.len() as u32; +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.stderr b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.stderr new file mode 100644 index 00000000000..c10607bf4ba --- /dev/null +++ b/src/tools/clippy/tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.stderr @@ -0,0 +1,12 @@ +error: this argument is a mutable reference, but not used mutably + --> tests/ui-toml/needless_pass_by_ref_mut/needless_pass_by_ref_mut.rs:5:19 + | +LL | pub fn pub_foo(s: &mut Vec<u32>, b: &u32, x: &mut u32) { + | ^^^^^^^^^^^^^ help: consider changing to: `&Vec<u32>` + | + = warning: changing this function will impact semver compatibility + = note: `-D clippy::needless-pass-by-ref-mut` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_ref_mut)]` + +error: aborting due to 1 previous error + diff --git a/src/tools/clippy/tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.stderr b/src/tools/clippy/tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.stderr index 4afbbf5f807..f661e76cc74 100644 --- a/src/tools/clippy/tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.stderr +++ b/src/tools/clippy/tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.stderr @@ -2,36 +2,36 @@ error: use of a disallowed method `regex::Regex::new` --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:35:14 | LL | let re = Regex::new(r"ab.*c").unwrap(); - | ^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^ | = note: `-D clippy::disallowed-methods` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::disallowed_methods)]` error: use of a disallowed method `regex::Regex::is_match` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:36:5 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:36:8 | LL | re.is_match("abc"); - | ^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^ | = note: no matching allowed (from clippy.toml) error: use of a disallowed method `std::iter::Iterator::sum` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:39:5 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:39:14 | LL | a.iter().sum::<i32>(); - | ^^^^^^^^^^^^^^^^^^^^^ + | ^^^ error: use of a disallowed method `slice::sort_unstable` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:41:5 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:41:7 | LL | a.sort_unstable(); - | ^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^ error: use of a disallowed method `f32::clamp` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:44:13 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:44:20 | LL | let _ = 2.0f32.clamp(3.0f32, 4.0f32); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^ error: use of a disallowed method `regex::Regex::new` --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:47:61 @@ -55,37 +55,37 @@ error: use of a disallowed method `futures::stream::select_all` --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:54:31 | LL | let same_name_as_module = select_all(vec![empty::<()>()]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^ error: use of a disallowed method `conf_disallowed_methods::local_fn` --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:56:5 | LL | local_fn(); - | ^^^^^^^^^^ + | ^^^^^^^^ error: use of a disallowed method `conf_disallowed_methods::local_mod::f` --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:57:5 | LL | local_mod::f(); - | ^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^ error: use of a disallowed method `conf_disallowed_methods::Struct::method` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:59:5 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:59:7 | LL | s.method(); - | ^^^^^^^^^^ + | ^^^^^^ error: use of a disallowed method `conf_disallowed_methods::Trait::provided_method` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:60:5 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:60:7 | LL | s.provided_method(); - | ^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^ error: use of a disallowed method `conf_disallowed_methods::Trait::implemented_method` - --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:61:5 + --> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:61:7 | LL | s.implemented_method(); - | ^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^ error: aborting due to 14 previous errors diff --git a/src/tools/clippy/tests/ui/assertions_on_constants.rs b/src/tools/clippy/tests/ui/assertions_on_constants.rs index 1309ae45d0a..957154e60de 100644 --- a/src/tools/clippy/tests/ui/assertions_on_constants.rs +++ b/src/tools/clippy/tests/ui/assertions_on_constants.rs @@ -1,4 +1,4 @@ -#![allow(non_fmt_panics, clippy::needless_bool)] +#![allow(non_fmt_panics, clippy::needless_bool, clippy::eq_op)] macro_rules! assert_const { ($len:expr) => { @@ -49,7 +49,16 @@ fn main() { const _: () = assert!(true); //~^ ERROR: `assert!(true)` will be optimized out by the compiler + assert!(8 == (7 + 1)); + //~^ ERROR: `assert!(true)` will be optimized out by the compiler + // Don't lint if the value is dependent on a defined constant: const N: usize = 1024; const _: () = assert!(N.is_power_of_two()); } + +const _: () = { + assert!(true); + //~^ ERROR: `assert!(true)` will be optimized out by the compiler + assert!(8 == (7 + 1)); +}; diff --git a/src/tools/clippy/tests/ui/assertions_on_constants.stderr b/src/tools/clippy/tests/ui/assertions_on_constants.stderr index 00f117c9492..e164a999c43 100644 --- a/src/tools/clippy/tests/ui/assertions_on_constants.stderr +++ b/src/tools/clippy/tests/ui/assertions_on_constants.stderr @@ -80,5 +80,21 @@ LL | const _: () = assert!(true); | = help: remove it -error: aborting due to 10 previous errors +error: `assert!(true)` will be optimized out by the compiler + --> tests/ui/assertions_on_constants.rs:52:5 + | +LL | assert!(8 == (7 + 1)); + | ^^^^^^^^^^^^^^^^^^^^^ + | + = help: remove it + +error: `assert!(true)` will be optimized out by the compiler + --> tests/ui/assertions_on_constants.rs:61:5 + | +LL | assert!(true); + | ^^^^^^^^^^^^^ + | + = help: remove it + +error: aborting due to 12 previous errors diff --git a/src/tools/clippy/tests/ui/await_holding_lock.rs b/src/tools/clippy/tests/ui/await_holding_lock.rs index 8e5510e6cd0..cecf00c934f 100644 --- a/src/tools/clippy/tests/ui/await_holding_lock.rs +++ b/src/tools/clippy/tests/ui/await_holding_lock.rs @@ -8,7 +8,7 @@ mod std_mutex { pub async fn bad(x: &Mutex<u32>) -> u32 { let guard = x.lock().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } @@ -24,13 +24,13 @@ mod std_mutex { pub async fn bad_rw(x: &RwLock<u32>) -> u32 { let guard = x.read().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } pub async fn bad_rw_write(x: &RwLock<u32>) -> u32 { let mut guard = x.write().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } @@ -52,7 +52,7 @@ mod std_mutex { let first = baz().await; let guard = x.lock().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point let second = baz().await; @@ -66,7 +66,7 @@ mod std_mutex { let second = { let guard = x.lock().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await }; @@ -79,7 +79,7 @@ mod std_mutex { pub fn block_bad(x: &Mutex<u32>) -> impl std::future::Future<Output = u32> + '_ { async move { let guard = x.lock().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } } @@ -92,7 +92,7 @@ mod parking_lot_mutex { pub async fn bad(x: &Mutex<u32>) -> u32 { let guard = x.lock(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } @@ -108,13 +108,13 @@ mod parking_lot_mutex { pub async fn bad_rw(x: &RwLock<u32>) -> u32 { let guard = x.read(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } pub async fn bad_rw_write(x: &RwLock<u32>) -> u32 { let mut guard = x.write(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } @@ -136,7 +136,7 @@ mod parking_lot_mutex { let first = baz().await; let guard = x.lock(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point let second = baz().await; @@ -150,7 +150,7 @@ mod parking_lot_mutex { let second = { let guard = x.lock(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await }; @@ -163,7 +163,7 @@ mod parking_lot_mutex { pub fn block_bad(x: &Mutex<u32>) -> impl std::future::Future<Output = u32> + '_ { async move { let guard = x.lock(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point baz().await } } @@ -184,7 +184,7 @@ async fn no_await(x: std::sync::Mutex<u32>) { // `*guard += 1` is removed it is picked up. async fn dropped_before_await(x: std::sync::Mutex<u32>) { let mut guard = x.lock().unwrap(); - //~^ ERROR: this `MutexGuard` is held across an `await` point + //~^ ERROR: this `MutexGuard` is held across an await point *guard += 1; drop(guard); baz().await; diff --git a/src/tools/clippy/tests/ui/await_holding_lock.stderr b/src/tools/clippy/tests/ui/await_holding_lock.stderr index 0af48a36acc..af61d893948 100644 --- a/src/tools/clippy/tests/ui/await_holding_lock.stderr +++ b/src/tools/clippy/tests/ui/await_holding_lock.stderr @@ -1,11 +1,11 @@ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:10:13 | LL | let guard = x.lock().unwrap(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:12:15 | LL | baz().await @@ -13,40 +13,40 @@ LL | baz().await = note: `-D clippy::await-holding-lock` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::await_holding_lock)]` -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:26:13 | LL | let guard = x.read().unwrap(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:28:15 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:32:13 | LL | let mut guard = x.write().unwrap(); | ^^^^^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:34:15 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:54:13 | LL | let guard = x.lock().unwrap(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:57:28 | LL | let second = baz().await; @@ -55,79 +55,79 @@ LL | LL | let third = baz().await; | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:68:17 | LL | let guard = x.lock().unwrap(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:70:19 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:81:17 | LL | let guard = x.lock().unwrap(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:83:19 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:94:13 | LL | let guard = x.lock(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:96:15 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:110:13 | LL | let guard = x.read(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:112:15 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:116:13 | LL | let mut guard = x.write(); | ^^^^^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:118:15 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:138:13 | LL | let guard = x.lock(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:141:28 | LL | let second = baz().await; @@ -136,40 +136,40 @@ LL | LL | let third = baz().await; | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:152:17 | LL | let guard = x.lock(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:154:19 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:165:17 | LL | let guard = x.lock(); | ^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:167:19 | LL | baz().await | ^^^^^ -error: this `MutexGuard` is held across an `await` point +error: this `MutexGuard` is held across an await point --> tests/ui/await_holding_lock.rs:186:9 | LL | let mut guard = x.lock().unwrap(); | ^^^^^^^^^ | - = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await -note: these are all the `await` points this lock is held through + = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling `await` +note: these are all the await points this lock is held through --> tests/ui/await_holding_lock.rs:190:11 | LL | baz().await; diff --git a/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs b/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs index 5bd26c62836..b0c92d8c1f6 100644 --- a/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs +++ b/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs @@ -4,13 +4,13 @@ use std::cell::RefCell; async fn bad(x: &RefCell<u32>) -> u32 { let b = x.borrow(); - //~^ ERROR: this `RefCell` reference is held across an `await` point + //~^ ERROR: this `RefCell` reference is held across an await point baz().await } async fn bad_mut(x: &RefCell<u32>) -> u32 { let b = x.borrow_mut(); - //~^ ERROR: this `RefCell` reference is held across an `await` point + //~^ ERROR: this `RefCell` reference is held across an await point baz().await } @@ -32,7 +32,7 @@ async fn also_bad(x: &RefCell<u32>) -> u32 { let first = baz().await; let b = x.borrow_mut(); - //~^ ERROR: this `RefCell` reference is held across an `await` point + //~^ ERROR: this `RefCell` reference is held across an await point let second = baz().await; @@ -45,7 +45,7 @@ async fn less_bad(x: &RefCell<u32>) -> u32 { let first = baz().await; let b = x.borrow_mut(); - //~^ ERROR: this `RefCell` reference is held across an `await` point + //~^ ERROR: this `RefCell` reference is held across an await point let second = baz().await; @@ -61,7 +61,7 @@ async fn not_good(x: &RefCell<u32>) -> u32 { let second = { let b = x.borrow_mut(); - //~^ ERROR: this `RefCell` reference is held across an `await` point + //~^ ERROR: this `RefCell` reference is held across an await point baz().await }; @@ -74,7 +74,7 @@ async fn not_good(x: &RefCell<u32>) -> u32 { fn block_bad(x: &RefCell<u32>) -> impl std::future::Future<Output = u32> + '_ { async move { let b = x.borrow_mut(); - //~^ ERROR: this `RefCell` reference is held across an `await` point + //~^ ERROR: this `RefCell` reference is held across an await point baz().await } } diff --git a/src/tools/clippy/tests/ui/await_holding_refcell_ref.stderr b/src/tools/clippy/tests/ui/await_holding_refcell_ref.stderr index 6b474c27ddc..6c7209c9ff9 100644 --- a/src/tools/clippy/tests/ui/await_holding_refcell_ref.stderr +++ b/src/tools/clippy/tests/ui/await_holding_refcell_ref.stderr @@ -1,11 +1,11 @@ -error: this `RefCell` reference is held across an `await` point +error: this `RefCell` reference is held across an await point --> tests/ui/await_holding_refcell_ref.rs:6:9 | LL | let b = x.borrow(); | ^ | = help: ensure the reference is dropped before calling `await` -note: these are all the `await` points this reference is held through +note: these are all the await points this reference is held through --> tests/ui/await_holding_refcell_ref.rs:8:11 | LL | baz().await @@ -13,27 +13,27 @@ LL | baz().await = note: `-D clippy::await-holding-refcell-ref` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::await_holding_refcell_ref)]` -error: this `RefCell` reference is held across an `await` point +error: this `RefCell` reference is held across an await point --> tests/ui/await_holding_refcell_ref.rs:12:9 | LL | let b = x.borrow_mut(); | ^ | = help: ensure the reference is dropped before calling `await` -note: these are all the `await` points this reference is held through +note: these are all the await points this reference is held through --> tests/ui/await_holding_refcell_ref.rs:14:11 | LL | baz().await | ^^^^^ -error: this `RefCell` reference is held across an `await` point +error: this `RefCell` reference is held across an await point --> tests/ui/await_holding_refcell_ref.rs:34:9 | LL | let b = x.borrow_mut(); | ^ | = help: ensure the reference is dropped before calling `await` -note: these are all the `await` points this reference is held through +note: these are all the await points this reference is held through --> tests/ui/await_holding_refcell_ref.rs:37:24 | LL | let second = baz().await; @@ -42,40 +42,40 @@ LL | LL | let third = baz().await; | ^^^^^ -error: this `RefCell` reference is held across an `await` point +error: this `RefCell` reference is held across an await point --> tests/ui/await_holding_refcell_ref.rs:47:9 | LL | let b = x.borrow_mut(); | ^ | = help: ensure the reference is dropped before calling `await` -note: these are all the `await` points this reference is held through +note: these are all the await points this reference is held through --> tests/ui/await_holding_refcell_ref.rs:50:24 | LL | let second = baz().await; | ^^^^^ -error: this `RefCell` reference is held across an `await` point +error: this `RefCell` reference is held across an await point --> tests/ui/await_holding_refcell_ref.rs:63:13 | LL | let b = x.borrow_mut(); | ^ | = help: ensure the reference is dropped before calling `await` -note: these are all the `await` points this reference is held through +note: these are all the await points this reference is held through --> tests/ui/await_holding_refcell_ref.rs:65:15 | LL | baz().await | ^^^^^ -error: this `RefCell` reference is held across an `await` point +error: this `RefCell` reference is held across an await point --> tests/ui/await_holding_refcell_ref.rs:76:13 | LL | let b = x.borrow_mut(); | ^ | = help: ensure the reference is dropped before calling `await` -note: these are all the `await` points this reference is held through +note: these are all the await points this reference is held through --> tests/ui/await_holding_refcell_ref.rs:78:15 | LL | baz().await diff --git a/src/tools/clippy/tests/ui/byte_char_slices.fixed b/src/tools/clippy/tests/ui/byte_char_slices.fixed new file mode 100644 index 00000000000..d1db58f9363 --- /dev/null +++ b/src/tools/clippy/tests/ui/byte_char_slices.fixed @@ -0,0 +1,13 @@ +#![allow(unused)] +#![warn(clippy::byte_char_slices)] + +fn main() { + let bad = b"abc"; + let quotes = b"\"Hi"; + let quotes = b"'Sup"; + let escapes = b"\x42Esc"; + + let good = &[b'a', 0x42]; + let good = [b'a', b'a']; + let good: u8 = [b'a', b'c'].into_iter().sum(); +} diff --git a/src/tools/clippy/tests/ui/byte_char_slices.rs b/src/tools/clippy/tests/ui/byte_char_slices.rs new file mode 100644 index 00000000000..18648fffceb --- /dev/null +++ b/src/tools/clippy/tests/ui/byte_char_slices.rs @@ -0,0 +1,13 @@ +#![allow(unused)] +#![warn(clippy::byte_char_slices)] + +fn main() { + let bad = &[b'a', b'b', b'c']; + let quotes = &[b'"', b'H', b'i']; + let quotes = &[b'\'', b'S', b'u', b'p']; + let escapes = &[b'\x42', b'E', b's', b'c']; + + let good = &[b'a', 0x42]; + let good = vec![b'a', b'a']; + let good: u8 = [b'a', b'c'].into_iter().sum(); +} diff --git a/src/tools/clippy/tests/ui/byte_char_slices.stderr b/src/tools/clippy/tests/ui/byte_char_slices.stderr new file mode 100644 index 00000000000..4e2b5d8a732 --- /dev/null +++ b/src/tools/clippy/tests/ui/byte_char_slices.stderr @@ -0,0 +1,38 @@ +error: can be more succinctly written as a byte str + --> tests/ui/byte_char_slices.rs:5:15 + | +LL | let bad = &[b'a', b'b', b'c']; + | ^^^^^^^^^^^^^^^^^^^ help: try: `b"abc"` + | + = note: `-D clippy::byte-char-slices` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::byte_char_slices)]` + +error: can be more succinctly written as a byte str + --> tests/ui/byte_char_slices.rs:6:18 + | +LL | let quotes = &[b'"', b'H', b'i']; + | ^^^^^^^^^^^^^^^^^^^ help: try: `b"\"Hi"` + +error: can be more succinctly written as a byte str + --> tests/ui/byte_char_slices.rs:7:18 + | +LL | let quotes = &[b'\'', b'S', b'u', b'p']; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `b"'Sup"` + +error: can be more succinctly written as a byte str + --> tests/ui/byte_char_slices.rs:8:19 + | +LL | let escapes = &[b'\x42', b'E', b's', b'c']; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `b"\x42Esc"` + +error: useless use of `vec!` + --> tests/ui/byte_char_slices.rs:11:16 + | +LL | let good = vec![b'a', b'a']; + | ^^^^^^^^^^^^^^^^ help: you can use an array directly: `[b'a', b'a']` + | + = note: `-D clippy::useless-vec` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::useless_vec)]` + +error: aborting due to 5 previous errors + diff --git a/src/tools/clippy/tests/ui/cfg_not_test.rs b/src/tools/clippy/tests/ui/cfg_not_test.rs new file mode 100644 index 00000000000..da3e29d2896 --- /dev/null +++ b/src/tools/clippy/tests/ui/cfg_not_test.rs @@ -0,0 +1,32 @@ +#![allow(unused)] +#![warn(clippy::cfg_not_test)] + +fn important_check() {} + +fn main() { + // Statement + #[cfg(not(test))] + let answer = 42; + + // Expression + #[cfg(not(test))] + important_check(); + + // Make sure only not(test) are checked, not other attributes + #[cfg(not(foo))] + important_check(); +} + +#[cfg(not(not(test)))] +struct CfgNotTest; + +// Deeply nested `not(test)` +#[cfg(not(test))] +fn foo() {} +#[cfg(all(debug_assertions, not(test)))] +fn bar() {} +#[cfg(not(any(not(debug_assertions), test)))] +fn baz() {} + +#[cfg(test)] +mod tests {} diff --git a/src/tools/clippy/tests/ui/cfg_not_test.stderr b/src/tools/clippy/tests/ui/cfg_not_test.stderr new file mode 100644 index 00000000000..c1bf626887a --- /dev/null +++ b/src/tools/clippy/tests/ui/cfg_not_test.stderr @@ -0,0 +1,45 @@ +error: code is excluded from test builds + --> tests/ui/cfg_not_test.rs:8:5 + | +LL | #[cfg(not(test))] + | ^^^^^^^^^^^^^^^^^ + | + = help: consider not excluding any code from test builds + = note: this could increase code coverage despite not actually being tested + = note: `-D clippy::cfg-not-test` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cfg_not_test)]` + +error: code is excluded from test builds + --> tests/ui/cfg_not_test.rs:12:5 + | +LL | #[cfg(not(test))] + | ^^^^^^^^^^^^^^^^^ + | + = help: consider not excluding any code from test builds + +error: code is excluded from test builds + --> tests/ui/cfg_not_test.rs:24:1 + | +LL | #[cfg(not(test))] + | ^^^^^^^^^^^^^^^^^ + | + = help: consider not excluding any code from test builds + +error: code is excluded from test builds + --> tests/ui/cfg_not_test.rs:26:1 + | +LL | #[cfg(all(debug_assertions, not(test)))] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider not excluding any code from test builds + +error: code is excluded from test builds + --> tests/ui/cfg_not_test.rs:28:1 + | +LL | #[cfg(not(any(not(debug_assertions), test)))] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider not excluding any code from test builds + +error: aborting due to 5 previous errors + diff --git a/src/tools/clippy/tests/ui/crashes/ice-12616.stderr b/src/tools/clippy/tests/ui/crashes/ice-12616.stderr index c7cf5cf5483..a84a945a429 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-12616.stderr +++ b/src/tools/clippy/tests/ui/crashes/ice-12616.stderr @@ -1,4 +1,4 @@ -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/crashes/ice-12616.rs:6:5 | LL | s() as *const (); diff --git a/src/tools/clippy/tests/ui/disallowed_names.rs b/src/tools/clippy/tests/ui/disallowed_names.rs index 13c883409bf..96531bf8d88 100644 --- a/src/tools/clippy/tests/ui/disallowed_names.rs +++ b/src/tools/clippy/tests/ui/disallowed_names.rs @@ -60,6 +60,7 @@ fn issue_1647_ref_mut() { //~^ ERROR: use of a disallowed/placeholder name `quux` } +#[cfg(test)] mod tests { fn issue_7305() { // `disallowed_names` lint should not be triggered inside of the test code. 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 new file mode 100644 index 00000000000..1aaa26afe7f --- /dev/null +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.fixed @@ -0,0 +1,47 @@ +// 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 new file mode 100644 index 00000000000..e1ab8fc8389 --- /dev/null +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.rs @@ -0,0 +1,43 @@ +// 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 new file mode 100644 index 00000000000..854906a7474 --- /dev/null +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_blank_line.stderr @@ -0,0 +1,56 @@ +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_blockquote.fixed b/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.fixed index 9877991f183..9d6e8637608 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.fixed +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.fixed @@ -2,7 +2,7 @@ /// > blockquote with /// > lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn first() {} /// > blockquote with no @@ -18,24 +18,24 @@ fn two_nowarn() {} /// > /// > > nest here /// > > lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn two() {} /// > nest here /// > /// > > nest here /// > > lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn three() {} /// > * > nest here /// > > lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn four() {} /// > * > nest here /// > > lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn four_point_1() {} /// * > nest here lazy continuation @@ -43,5 +43,5 @@ fn five() {} /// 1. > nest here /// > lazy continuation (this results in strange indentation, but still works) -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn six() {} diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.rs b/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.rs index 587b2fdd533..0323a1b44e7 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.rs +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.rs @@ -2,7 +2,7 @@ /// > blockquote with /// lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn first() {} /// > blockquote with no @@ -18,24 +18,24 @@ fn two_nowarn() {} /// > /// > > nest here /// > lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn two() {} /// > nest here /// > /// > > nest here /// lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn three() {} /// > * > nest here /// lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn four() {} /// > * > nest here /// lazy continuation -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn four_point_1() {} /// * > nest here lazy continuation @@ -43,5 +43,5 @@ fn five() {} /// 1. > nest here /// lazy continuation (this results in strange indentation, but still works) -//~^ ERROR: doc quote missing `>` marker +//~^ ERROR: doc quote line without `>` marker fn six() {} diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.stderr b/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.stderr index 975184a01c3..d3390efdff3 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.stderr +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_blockquote.stderr @@ -1,4 +1,4 @@ -error: doc quote missing `>` marker +error: doc quote line without `>` marker --> tests/ui/doc/doc_lazy_blockquote.rs:4:5 | LL | /// lazy continuation @@ -12,7 +12,7 @@ help: add markers to start of line LL | /// > lazy continuation | + -error: doc quote missing `>` marker +error: doc quote line without `>` marker --> tests/ui/doc/doc_lazy_blockquote.rs:20:5 | LL | /// > lazy continuation @@ -24,7 +24,7 @@ help: add markers to start of line LL | /// > > lazy continuation | + -error: doc quote missing `>` marker +error: doc quote line without `>` marker --> tests/ui/doc/doc_lazy_blockquote.rs:27:5 | LL | /// lazy continuation @@ -36,7 +36,7 @@ help: add markers to start of line LL | /// > > lazy continuation | +++ -error: doc quote missing `>` marker +error: doc quote line without `>` marker --> tests/ui/doc/doc_lazy_blockquote.rs:32:5 | LL | /// lazy continuation @@ -48,7 +48,7 @@ help: add markers to start of line LL | /// > > lazy continuation | +++++++ -error: doc quote missing `>` marker +error: doc quote line without `>` marker --> tests/ui/doc/doc_lazy_blockquote.rs:37:5 | LL | /// lazy continuation @@ -60,7 +60,7 @@ help: add markers to start of line LL | /// > > lazy continuation | +++++ -error: doc quote missing `>` marker +error: doc quote line without `>` marker --> tests/ui/doc/doc_lazy_blockquote.rs:45:5 | LL | /// lazy continuation (this results in strange indentation, but still works) 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 409e6b0bc22..ea59ae4c01c 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_list.fixed +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_list.fixed @@ -2,38 +2,41 @@ /// 1. nest here /// lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn one() {} /// 1. first line /// lazy list continuations don't make warnings with this lint -//~^ ERROR: doc list item missing indentation -/// because they don't have the -//~^ ERROR: doc list item missing indentation +/// +//~^ ERROR: doc list item without indentation +/// because they don't have the +//~^ ERROR: doc list item without indentation fn two() {} /// - nest here /// lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn three() {} /// - first line /// lazy list continuations don't make warnings with this lint -//~^ ERROR: doc list item missing indentation -/// because they don't have the -//~^ ERROR: doc list item missing indentation +/// +//~^ ERROR: doc list item without indentation +/// because they don't have the +//~^ ERROR: doc list item without indentation fn four() {} /// - nest here /// lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn five() {} /// - - first line /// this will warn on the lazy continuation -//~^ ERROR: doc list item missing indentation -/// and so should this -//~^ ERROR: doc list item missing indentation +/// +//~^ ERROR: doc list item without indentation +/// and so should this +//~^ ERROR: doc list item without indentation fn six() {} /// - - first line @@ -54,7 +57,7 @@ fn seven() {} /// * `protocol_descriptors`: A Json Representation of the ProtocolDescriptors /// to set up. Example: /// 'protocol_descriptors': [ -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation /// { /// 'protocol': 25, # u64 Representation of ProtocolIdentifier::AVDTP /// 'params': [ @@ -73,5 +76,5 @@ fn seven() {} /// }] /// } /// ] -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn eight() {} diff --git a/src/tools/clippy/tests/ui/doc/doc_lazy_list.rs b/src/tools/clippy/tests/ui/doc/doc_lazy_list.rs index 30ab448a113..3cc18e35780 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_list.rs +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_list.rs @@ -2,38 +2,38 @@ /// 1. nest here /// lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn one() {} /// 1. first line /// lazy list continuations don't make warnings with this lint -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation /// because they don't have the -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn two() {} /// - nest here /// lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn three() {} /// - first line /// lazy list continuations don't make warnings with this lint -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation /// because they don't have the -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn four() {} /// - nest here /// lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn five() {} /// - - first line /// this will warn on the lazy continuation -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation /// and so should this -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn six() {} /// - - first line @@ -54,7 +54,7 @@ fn seven() {} /// * `protocol_descriptors`: A Json Representation of the ProtocolDescriptors /// to set up. Example: /// 'protocol_descriptors': [ -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation /// { /// 'protocol': 25, # u64 Representation of ProtocolIdentifier::AVDTP /// 'params': [ @@ -73,5 +73,5 @@ fn seven() {} /// }] /// } /// ] -//~^ ERROR: doc list item missing indentation +//~^ ERROR: doc list item without indentation fn eight() {} 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 ddfdc49340c..52aa74df894 100644 --- a/src/tools/clippy/tests/ui/doc/doc_lazy_list.stderr +++ b/src/tools/clippy/tests/ui/doc/doc_lazy_list.stderr @@ -1,4 +1,4 @@ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:4:5 | LL | /// lazy continuation @@ -12,7 +12,7 @@ help: indent this line LL | /// lazy continuation | +++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:9:5 | LL | /// lazy list continuations don't make warnings with this lint @@ -24,19 +24,20 @@ help: indent this line LL | /// lazy list continuations don't make warnings with this lint | +++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:11:5 | LL | /// because they don't have the | ^ | - = help: if this is supposed to be its own paragraph, add a blank line -help: indent this line + = 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 + /// | -LL | /// because they don't have the - | +++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:16:5 | LL | /// lazy continuation @@ -48,7 +49,7 @@ help: indent this line LL | /// lazy continuation | ++++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:21:5 | LL | /// lazy list continuations don't make warnings with this lint @@ -60,19 +61,20 @@ help: indent this line LL | /// lazy list continuations don't make warnings with this lint | ++++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:23:5 | LL | /// because they don't have the | ^ | - = help: if this is supposed to be its own paragraph, add a blank line -help: indent this line + = 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 + /// | -LL | /// because they don't have the - | ++++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:28:5 | LL | /// lazy continuation @@ -84,7 +86,7 @@ help: indent this line LL | /// lazy continuation | ++++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:33:5 | LL | /// this will warn on the lazy continuation @@ -96,19 +98,20 @@ help: indent this line LL | /// this will warn on the lazy continuation | ++++++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:35:5 | LL | /// and so should this | ^^^^ | - = help: if this is supposed to be its own paragraph, add a blank line -help: indent this line + = 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 + /// | -LL | /// and so should this - | ++ -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:56:5 | LL | /// 'protocol_descriptors': [ @@ -120,7 +123,7 @@ help: indent this line LL | /// 'protocol_descriptors': [ | + -error: doc list item missing indentation +error: doc list item without indentation --> tests/ui/doc/doc_lazy_list.rs:75:5 | LL | /// ] diff --git a/src/tools/clippy/tests/ui/doc/unbalanced_ticks.rs b/src/tools/clippy/tests/ui/doc/unbalanced_ticks.rs index 6f7bab72040..04446787b6c 100644 --- a/src/tools/clippy/tests/ui/doc/unbalanced_ticks.rs +++ b/src/tools/clippy/tests/ui/doc/unbalanced_ticks.rs @@ -49,3 +49,20 @@ fn other_markdown() {} /// pub struct Struct; /// ``` fn issue_7421() {} + +/// ` +//~^ ERROR: backticks are unbalanced +fn escape_0() {} + +/// Escaped \` backticks don't count. +fn escape_1() {} + +/// Escaped \` \` backticks don't count. +fn escape_2() {} + +/// Escaped \` ` backticks don't count, but unescaped backticks do. +//~^ ERROR: backticks are unbalanced +fn escape_3() {} + +/// Backslashes ` \` within code blocks don't count. +fn escape_4() {} diff --git a/src/tools/clippy/tests/ui/doc/unbalanced_ticks.stderr b/src/tools/clippy/tests/ui/doc/unbalanced_ticks.stderr index 56ef2913623..50324010e97 100644 --- a/src/tools/clippy/tests/ui/doc/unbalanced_ticks.stderr +++ b/src/tools/clippy/tests/ui/doc/unbalanced_ticks.stderr @@ -78,5 +78,21 @@ help: try LL | /// - This item needs `backticks_here` | ~~~~~~~~~~~~~~~~ -error: aborting due to 8 previous errors +error: backticks are unbalanced + --> tests/ui/doc/unbalanced_ticks.rs:53:5 + | +LL | /// ` + | ^ + | + = help: a backtick may be missing a pair + +error: backticks are unbalanced + --> tests/ui/doc/unbalanced_ticks.rs:63:5 + | +LL | /// Escaped \` ` backticks don't count, but unescaped backticks do. + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: a backtick may be missing a pair + +error: aborting due to 10 previous errors diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.fixed b/src/tools/clippy/tests/ui/explicit_auto_deref.fixed index e6ca4bb66cc..255b2c5a220 100644 --- a/src/tools/clippy/tests/ui/explicit_auto_deref.fixed +++ b/src/tools/clippy/tests/ui/explicit_auto_deref.fixed @@ -345,3 +345,39 @@ fn main() { let _ = &mut ({ *x.u }).x; } } + +mod issue_12969 { + use std::ops::Deref; + + struct Wrapper<T>(T); + + impl<T> Deref for Wrapper<T> { + type Target = T; + + fn deref(&self) -> &T { + &self.0 + } + } + + fn foo(_bar: &str) {} + + fn bar() { + let wrapped_bar = Wrapper(""); + + foo(&wrapped_bar); + } +} + +mod issue_9841 { + fn takes_array_ref<T, const N: usize>(array: &&[T; N]) { + takes_slice(*array) + } + + fn takes_array_ref_ref<T, const N: usize>(array: &&&[T; N]) { + takes_slice(**array) + } + + fn takes_slice<T>(slice: &[T]) { + todo!() + } +} diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.rs b/src/tools/clippy/tests/ui/explicit_auto_deref.rs index 7531e1f87b7..99906999f01 100644 --- a/src/tools/clippy/tests/ui/explicit_auto_deref.rs +++ b/src/tools/clippy/tests/ui/explicit_auto_deref.rs @@ -345,3 +345,39 @@ fn main() { let _ = &mut ({ *x.u }).x; } } + +mod issue_12969 { + use std::ops::Deref; + + struct Wrapper<T>(T); + + impl<T> Deref for Wrapper<T> { + type Target = T; + + fn deref(&self) -> &T { + &self.0 + } + } + + fn foo(_bar: &str) {} + + fn bar() { + let wrapped_bar = Wrapper(""); + + foo(&*wrapped_bar); + } +} + +mod issue_9841 { + fn takes_array_ref<T, const N: usize>(array: &&[T; N]) { + takes_slice(*array) + } + + fn takes_array_ref_ref<T, const N: usize>(array: &&&[T; N]) { + takes_slice(**array) + } + + fn takes_slice<T>(slice: &[T]) { + todo!() + } +} diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.stderr b/src/tools/clippy/tests/ui/explicit_auto_deref.stderr index 56a183de348..53784934f63 100644 --- a/src/tools/clippy/tests/ui/explicit_auto_deref.stderr +++ b/src/tools/clippy/tests/ui/explicit_auto_deref.stderr @@ -271,5 +271,11 @@ error: deref which would be done by auto-deref LL | let _ = &mut (*{ x.u }).x; | ^^^^^^^^^^ help: try: `{ x.u }` -error: aborting due to 45 previous errors +error: deref which would be done by auto-deref + --> tests/ui/explicit_auto_deref.rs:367:13 + | +LL | foo(&*wrapped_bar); + | ^^^^^^^^^^^^^ help: try: `&wrapped_bar` + +error: aborting due to 46 previous errors diff --git a/src/tools/clippy/tests/ui/float_cmp.rs b/src/tools/clippy/tests/ui/float_cmp.rs index 1923ad7c677..78dd2c6c01c 100644 --- a/src/tools/clippy/tests/ui/float_cmp.rs +++ b/src/tools/clippy/tests/ui/float_cmp.rs @@ -71,19 +71,16 @@ fn main() { twice(ONE) != ONE; ONE as f64 != 2.0; //~^ ERROR: strict comparison of `f32` or `f64` - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` ONE as f64 != 0.0; // no error, comparison with zero is ok let x: f64 = 1.0; x == 1.0; //~^ ERROR: strict comparison of `f32` or `f64` - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` x != 0f64; // no error, comparison with zero is ok twice(x) != twice(ONE as f64); //~^ ERROR: strict comparison of `f32` or `f64` - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` x < 0.0; // no errors, lower or greater comparisons need no fuzzyness x > 0.0; @@ -105,17 +102,14 @@ fn main() { ZERO_ARRAY[i] == NON_ZERO_ARRAY[j]; // ok, because lhs is zero regardless of i NON_ZERO_ARRAY[i] == NON_ZERO_ARRAY[j]; //~^ ERROR: strict comparison of `f32` or `f64` - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` let a1: [f32; 1] = [0.0]; let a2: [f32; 1] = [1.1]; a1 == a2; //~^ ERROR: strict comparison of `f32` or `f64` arrays - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` a1[0] == a2[0]; //~^ ERROR: strict comparison of `f32` or `f64` - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` // no errors - comparing signums is ok let x32 = 3.21f32; diff --git a/src/tools/clippy/tests/ui/float_cmp.stderr b/src/tools/clippy/tests/ui/float_cmp.stderr index c8a0bde6e63..d10da8a99a9 100644 --- a/src/tools/clippy/tests/ui/float_cmp.stderr +++ b/src/tools/clippy/tests/ui/float_cmp.stderr @@ -4,49 +4,38 @@ error: strict comparison of `f32` or `f64` LL | ONE as f64 != 2.0; | ^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(ONE as f64 - 2.0).abs() > error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` = note: `-D clippy::float-cmp` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::float_cmp)]` error: strict comparison of `f32` or `f64` - --> tests/ui/float_cmp.rs:79:5 + --> tests/ui/float_cmp.rs:78:5 | LL | x == 1.0; | ^^^^^^^^ help: consider comparing them within some margin of error: `(x - 1.0).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` - --> tests/ui/float_cmp.rs:84:5 + --> tests/ui/float_cmp.rs:82:5 | LL | twice(x) != twice(ONE as f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(twice(x) - twice(ONE as f64)).abs() > error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` - --> tests/ui/float_cmp.rs:106:5 + --> tests/ui/float_cmp.rs:103:5 | LL | NON_ZERO_ARRAY[i] == NON_ZERO_ARRAY[j]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(NON_ZERO_ARRAY[i] - NON_ZERO_ARRAY[j]).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` arrays - --> tests/ui/float_cmp.rs:113:5 + --> tests/ui/float_cmp.rs:109:5 | LL | a1 == a2; | ^^^^^^^^ - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` - --> tests/ui/float_cmp.rs:116:5 + --> tests/ui/float_cmp.rs:111:5 | LL | a1[0] == a2[0]; | ^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(a1[0] - a2[0]).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/float_cmp_const.rs b/src/tools/clippy/tests/ui/float_cmp_const.rs index 47ea0e19c68..08180556437 100644 --- a/src/tools/clippy/tests/ui/float_cmp_const.rs +++ b/src/tools/clippy/tests/ui/float_cmp_const.rs @@ -15,28 +15,21 @@ fn main() { // has errors 1f32 == ONE; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` TWO == ONE; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` TWO != ONE; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` ONE + ONE == TWO; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` let x = 1; x as f32 == ONE; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` let v = 0.9; v == ONE; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` v != ONE; //~^ ERROR: strict comparison of `f32` or `f64` constant - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` // no errors, lower than or greater than comparisons v < ONE; @@ -70,5 +63,4 @@ fn main() { // has errors NON_ZERO_ARRAY == NON_ZERO_ARRAY2; //~^ ERROR: strict comparison of `f32` or `f64` constant arrays - //~| NOTE: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` } diff --git a/src/tools/clippy/tests/ui/float_cmp_const.stderr b/src/tools/clippy/tests/ui/float_cmp_const.stderr index bffd2acc2e0..4f88746e958 100644 --- a/src/tools/clippy/tests/ui/float_cmp_const.stderr +++ b/src/tools/clippy/tests/ui/float_cmp_const.stderr @@ -4,65 +4,50 @@ error: strict comparison of `f32` or `f64` constant LL | 1f32 == ONE; | ^^^^^^^^^^^ help: consider comparing them within some margin of error: `(1f32 - ONE).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` = note: `-D clippy::float-cmp-const` implied by `-D warnings` = 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:19:5 + --> tests/ui/float_cmp_const.rs:18:5 | LL | TWO == ONE; | ^^^^^^^^^^ help: consider comparing them within some margin of error: `(TWO - ONE).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:22:5 + --> tests/ui/float_cmp_const.rs:20:5 | LL | TWO != ONE; | ^^^^^^^^^^ help: consider comparing them within some margin of error: `(TWO - ONE).abs() > error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:25:5 + --> tests/ui/float_cmp_const.rs:22:5 | LL | ONE + ONE == TWO; | ^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(ONE + ONE - TWO).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:29:5 + --> tests/ui/float_cmp_const.rs:25:5 | LL | x as f32 == ONE; | ^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(x as f32 - ONE).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:34:5 + --> tests/ui/float_cmp_const.rs:29:5 | LL | v == ONE; | ^^^^^^^^ help: consider comparing them within some margin of error: `(v - ONE).abs() < error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant - --> tests/ui/float_cmp_const.rs:37:5 + --> tests/ui/float_cmp_const.rs:31:5 | LL | v != ONE; | ^^^^^^^^ help: consider comparing them within some margin of error: `(v - ONE).abs() > error_margin` - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant arrays - --> tests/ui/float_cmp_const.rs:71:5 + --> tests/ui/float_cmp_const.rs:64:5 | LL | NON_ZERO_ARRAY == NON_ZERO_ARRAY2; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: aborting due to 8 previous errors diff --git a/src/tools/clippy/tests/ui/numbered_fields.fixed b/src/tools/clippy/tests/ui/init_numbered_fields.fixed index 108520eed38..dca4e8da4d2 100644 --- a/src/tools/clippy/tests/ui/numbered_fields.fixed +++ b/src/tools/clippy/tests/ui/init_numbered_fields.fixed @@ -39,4 +39,13 @@ fn main() { struct TupleStructVec(Vec<usize>); let _ = TupleStructVec(vec![0, 1, 2, 3]); + + { + struct S(i32, i32); + let mut iter = [1i32, 1i32].into_iter(); + let _ = S { + 1: iter.next().unwrap(), + 0: iter.next().unwrap(), + }; + } } diff --git a/src/tools/clippy/tests/ui/numbered_fields.rs b/src/tools/clippy/tests/ui/init_numbered_fields.rs index c718661a682..8cb34705b4f 100644 --- a/src/tools/clippy/tests/ui/numbered_fields.rs +++ b/src/tools/clippy/tests/ui/init_numbered_fields.rs @@ -47,4 +47,13 @@ fn main() { struct TupleStructVec(Vec<usize>); let _ = TupleStructVec { 0: vec![0, 1, 2, 3] }; + + { + struct S(i32, i32); + let mut iter = [1i32, 1i32].into_iter(); + let _ = S { + 1: iter.next().unwrap(), + 0: iter.next().unwrap(), + }; + } } diff --git a/src/tools/clippy/tests/ui/numbered_fields.stderr b/src/tools/clippy/tests/ui/init_numbered_fields.stderr index 9d3f59cd376..f176e0c2ff3 100644 --- a/src/tools/clippy/tests/ui/numbered_fields.stderr +++ b/src/tools/clippy/tests/ui/init_numbered_fields.stderr @@ -1,5 +1,5 @@ error: used a field initializer for a tuple struct - --> tests/ui/numbered_fields.rs:17:13 + --> tests/ui/init_numbered_fields.rs:17:13 | LL | let _ = TupleStruct { | _____________^ @@ -7,13 +7,13 @@ LL | | 0: 1u32, LL | | 1: 42, LL | | 2: 23u8, LL | | }; - | |_____^ help: try: `TupleStruct(1u32, 42, 23u8)` + | |_____^ help: use tuple initialization: `TupleStruct(1u32, 42, 23u8)` | = note: `-D clippy::init-numbered-fields` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::init_numbered_fields)]` error: used a field initializer for a tuple struct - --> tests/ui/numbered_fields.rs:24:13 + --> tests/ui/init_numbered_fields.rs:24:13 | LL | let _ = TupleStruct { | _____________^ @@ -21,13 +21,13 @@ LL | | 0: 1u32, LL | | 2: 2u8, LL | | 1: 3u32, LL | | }; - | |_____^ help: try: `TupleStruct(1u32, 3u32, 2u8)` + | |_____^ help: use tuple initialization: `TupleStruct(1u32, 3u32, 2u8)` error: used a field initializer for a tuple struct - --> tests/ui/numbered_fields.rs:49:13 + --> tests/ui/init_numbered_fields.rs:49:13 | LL | let _ = TupleStructVec { 0: vec![0, 1, 2, 3] }; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `TupleStructVec(vec![0, 1, 2, 3])` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use tuple initialization: `TupleStructVec(vec![0, 1, 2, 3])` error: aborting due to 3 previous errors diff --git a/src/tools/clippy/tests/ui/into_iter_without_iter.rs b/src/tools/clippy/tests/ui/into_iter_without_iter.rs index c8b9076041a..109259d6975 100644 --- a/src/tools/clippy/tests/ui/into_iter_without_iter.rs +++ b/src/tools/clippy/tests/ui/into_iter_without_iter.rs @@ -185,3 +185,42 @@ pub mod issue11635 { } } } + +pub mod issue12964 { + pub struct MyIter<'a, T: 'a> { + iter: std::slice::Iter<'a, T>, + } + + impl<'a, T> Iterator for MyIter<'a, T> { + type Item = &'a T; + + fn next(&mut self) -> Option<Self::Item> { + self.iter.next() + } + } + + pub struct MyContainer<T> { + inner: Vec<T>, + } + + impl<T> MyContainer<T> {} + + impl<T> MyContainer<T> { + #[must_use] + pub fn iter(&self) -> MyIter<'_, T> { + <&Self as IntoIterator>::into_iter(self) + } + } + + impl<'a, T> IntoIterator for &'a MyContainer<T> { + type Item = &'a T; + + type IntoIter = MyIter<'a, T>; + + fn into_iter(self) -> Self::IntoIter { + Self::IntoIter { + iter: self.inner.as_slice().iter(), + } + } + } +} diff --git a/src/tools/clippy/tests/ui/iter_next_loop.rs b/src/tools/clippy/tests/ui/iter_next_loop.rs index 548b799de44..d425f4da0e8 100644 --- a/src/tools/clippy/tests/ui/iter_next_loop.rs +++ b/src/tools/clippy/tests/ui/iter_next_loop.rs @@ -3,7 +3,7 @@ fn main() { let x = [1, 2, 3, 4]; - for _ in vec.iter().next() {} + for _ in x.iter().next() {} struct Unrelated(&'static [u8]); impl Unrelated { diff --git a/src/tools/clippy/tests/ui/iter_next_loop.stderr b/src/tools/clippy/tests/ui/iter_next_loop.stderr index 85c23f4e709..acc55031c3b 100644 --- a/src/tools/clippy/tests/ui/iter_next_loop.stderr +++ b/src/tools/clippy/tests/ui/iter_next_loop.stderr @@ -1,9 +1,11 @@ -error[E0423]: expected value, found macro `vec` +error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want --> tests/ui/iter_next_loop.rs:6:14 | -LL | for _ in vec.iter().next() {} - | ^^^ not a value +LL | for _ in x.iter().next() {} + | ^^^^^^^^^^^^^^^ + | + = note: `-D clippy::iter-next-loop` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::iter_next_loop)]` error: aborting due to 1 previous error -For more information about this error, try `rustc --explain E0423`. diff --git a/src/tools/clippy/tests/ui/manual_inspect.stderr b/src/tools/clippy/tests/ui/manual_inspect.stderr index 8548c0cd294..0559b3bd661 100644 --- a/src/tools/clippy/tests/ui/manual_inspect.stderr +++ b/src/tools/clippy/tests/ui/manual_inspect.stderr @@ -1,4 +1,4 @@ -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:5:21 | LL | let _ = Some(0).map(|x| { @@ -12,7 +12,7 @@ LL ~ let _ = Some(0).inspect(|&x| { LL ~ println!("{}", x); | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:10:21 | LL | let _ = Some(0).map(|x| { @@ -24,7 +24,7 @@ LL ~ let _ = Some(0).inspect(|&x| { LL ~ println!("{x}"); | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:15:21 | LL | let _ = Some(0).map(|x| { @@ -36,7 +36,7 @@ LL ~ let _ = Some(0).inspect(|&x| { LL ~ println!("{}", x * 5 + 1); | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:20:21 | LL | let _ = Some(0).map(|x| { @@ -50,7 +50,7 @@ LL | panic!(); LL ~ } | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:27:21 | LL | let _ = Some(0).map(|x| { @@ -65,7 +65,7 @@ LL | panic!(); LL ~ } | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:78:41 | LL | let _ = Some((String::new(), 0u32)).map(|x| { @@ -80,7 +80,7 @@ LL | panic!(); LL ~ } | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:104:33 | LL | let _ = Some(String::new()).map(|x| { @@ -98,7 +98,7 @@ LL | } LL ~ println!("test"); | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:115:21 | LL | let _ = Some(0).map(|x| { @@ -113,7 +113,7 @@ LL | panic!(); LL ~ } | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:130:46 | LL | let _ = Some(Cell2(Cell::new(0u32))).map(|x| { @@ -125,7 +125,7 @@ LL ~ let _ = Some(Cell2(Cell::new(0u32))).inspect(|x| { LL ~ x.0.set(1); | -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:146:34 | LL | let _: Result<_, ()> = Ok(0).map(|x| { @@ -137,7 +137,7 @@ LL ~ let _: Result<_, ()> = Ok(0).inspect(|&x| { LL ~ println!("{}", x); | -error: +error: using `map_err` over `inspect_err` --> tests/ui/manual_inspect.rs:151:35 | LL | let _: Result<(), _> = Err(0).map_err(|x| { @@ -166,7 +166,7 @@ LL | | .count(); = note: `-D clippy::suspicious-map` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::suspicious_map)]` -error: +error: using `map` over `inspect` --> tests/ui/manual_inspect.rs:158:10 | LL | .map(|x| { diff --git a/src/tools/clippy/tests/ui/manual_rotate.fixed b/src/tools/clippy/tests/ui/manual_rotate.fixed new file mode 100644 index 00000000000..5d33838a318 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_rotate.fixed @@ -0,0 +1,31 @@ +#![warn(clippy::manual_rotate)] +#![allow(unused)] +fn main() { + let (x_u8, x_u16, x_u32, x_u64) = (1u8, 1u16, 1u32, 1u64); + let (x_i8, x_i16, x_i32, x_i64) = (1i8, 1i16, 1i32, 1i64); + let a_u32 = 1u32; + // True positives + let y_u8 = x_u8.rotate_right(3); + let y_u16 = x_u16.rotate_right(7); + let y_u32 = x_u32.rotate_right(8); + let y_u64 = x_u64.rotate_right(9); + let y_i8 = x_i8.rotate_right(3); + let y_i16 = x_i16.rotate_right(7); + let y_i32 = x_i32.rotate_right(8); + let y_i64 = x_i64.rotate_right(9); + // Plus also works instead of | + let y_u32_plus = x_u32.rotate_right(8); + // Complex expression + let y_u32_complex = (x_u32 | 3256).rotate_right(8); + let y_u64_as = (x_u32 as u64).rotate_right(8); + + // False positives - can't be replaced with a rotation + let y_u8_false = (x_u8 >> 6) | (x_u8 << 3); + let y_u32_false = (x_u32 >> 8) | (x_u32 >> 24); + let y_u64_false2 = (x_u64 >> 9) & (x_u64 << 55); + // Variable mismatch + let y_u32_wrong_vars = (x_u32 >> 8) | (a_u32 << 24); + // Has side effects and therefore should not be matched + let mut l = vec![12_u8, 34]; + let y = (l.pop().unwrap() << 3) + (l.pop().unwrap() >> 5); +} diff --git a/src/tools/clippy/tests/ui/manual_rotate.rs b/src/tools/clippy/tests/ui/manual_rotate.rs new file mode 100644 index 00000000000..5377491fb1a --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_rotate.rs @@ -0,0 +1,31 @@ +#![warn(clippy::manual_rotate)] +#![allow(unused)] +fn main() { + let (x_u8, x_u16, x_u32, x_u64) = (1u8, 1u16, 1u32, 1u64); + let (x_i8, x_i16, x_i32, x_i64) = (1i8, 1i16, 1i32, 1i64); + let a_u32 = 1u32; + // True positives + let y_u8 = (x_u8 >> 3) | (x_u8 << 5); + let y_u16 = (x_u16 >> 7) | (x_u16 << 9); + let y_u32 = (x_u32 >> 8) | (x_u32 << 24); + let y_u64 = (x_u64 >> 9) | (x_u64 << 55); + let y_i8 = (x_i8 >> 3) | (x_i8 << 5); + let y_i16 = (x_i16 >> 7) | (x_i16 << 9); + let y_i32 = (x_i32 >> 8) | (x_i32 << 24); + let y_i64 = (x_i64 >> 9) | (x_i64 << 55); + // Plus also works instead of | + let y_u32_plus = (x_u32 >> 8) + (x_u32 << 24); + // Complex expression + let y_u32_complex = ((x_u32 | 3256) >> 8) | ((x_u32 | 3256) << 24); + let y_u64_as = (x_u32 as u64 >> 8) | ((x_u32 as u64) << 56); + + // False positives - can't be replaced with a rotation + let y_u8_false = (x_u8 >> 6) | (x_u8 << 3); + let y_u32_false = (x_u32 >> 8) | (x_u32 >> 24); + let y_u64_false2 = (x_u64 >> 9) & (x_u64 << 55); + // Variable mismatch + let y_u32_wrong_vars = (x_u32 >> 8) | (a_u32 << 24); + // Has side effects and therefore should not be matched + let mut l = vec![12_u8, 34]; + let y = (l.pop().unwrap() << 3) + (l.pop().unwrap() >> 5); +} diff --git a/src/tools/clippy/tests/ui/manual_rotate.stderr b/src/tools/clippy/tests/ui/manual_rotate.stderr new file mode 100644 index 00000000000..52da0861f70 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_rotate.stderr @@ -0,0 +1,71 @@ +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:8:16 + | +LL | let y_u8 = (x_u8 >> 3) | (x_u8 << 5); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_u8.rotate_right(3)` + | + = note: `-D clippy::manual-rotate` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_rotate)]` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:9:17 + | +LL | let y_u16 = (x_u16 >> 7) | (x_u16 << 9); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_u16.rotate_right(7)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:10:17 + | +LL | let y_u32 = (x_u32 >> 8) | (x_u32 << 24); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_u32.rotate_right(8)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:11:17 + | +LL | let y_u64 = (x_u64 >> 9) | (x_u64 << 55); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_u64.rotate_right(9)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:12:16 + | +LL | let y_i8 = (x_i8 >> 3) | (x_i8 << 5); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_i8.rotate_right(3)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:13:17 + | +LL | let y_i16 = (x_i16 >> 7) | (x_i16 << 9); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_i16.rotate_right(7)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:14:17 + | +LL | let y_i32 = (x_i32 >> 8) | (x_i32 << 24); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_i32.rotate_right(8)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:15:17 + | +LL | let y_i64 = (x_i64 >> 9) | (x_i64 << 55); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_i64.rotate_right(9)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:17:22 + | +LL | let y_u32_plus = (x_u32 >> 8) + (x_u32 << 24); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `x_u32.rotate_right(8)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:19:25 + | +LL | let y_u32_complex = ((x_u32 | 3256) >> 8) | ((x_u32 | 3256) << 24); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `(x_u32 | 3256).rotate_right(8)` + +error: there is no need to manually implement bit rotation + --> tests/ui/manual_rotate.rs:20:20 + | +LL | let y_u64_as = (x_u32 as u64 >> 8) | ((x_u32 as u64) << 56); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: this expression can be rewritten as: `(x_u32 as u64).rotate_right(8)` + +error: aborting due to 11 previous errors + diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/cant_be_const.rs b/src/tools/clippy/tests/ui/missing_const_for_fn/cant_be_const.rs index 2750e0cdf3f..2c6e1e92da0 100644 --- a/src/tools/clippy/tests/ui/missing_const_for_fn/cant_be_const.rs +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/cant_be_const.rs @@ -7,6 +7,7 @@ #![warn(clippy::missing_const_for_fn)] #![feature(start)] +#![feature(type_alias_impl_trait)] extern crate helper; extern crate proc_macros; @@ -180,4 +181,21 @@ mod msrv { unsafe { *self.1 as usize } } } + + #[clippy::msrv = "1.61"] + extern "C" fn c() {} +} + +mod with_extern { + extern "C-unwind" fn c_unwind() {} + extern "system" fn system() {} + extern "system-unwind" fn system_unwind() {} +} + +mod with_ty_alias { + type Foo = impl std::fmt::Debug; + + fn foo(_: Foo) { + let _: Foo = 1; + } } diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.fixed b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.fixed index f8fc935f367..dbd739eee13 100644 --- a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.fixed +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.fixed @@ -143,6 +143,21 @@ mod msrv { let bar = Bar { val: 1 }; let _ = unsafe { bar.val }; } + + #[clippy::msrv = "1.62"] + mod with_extern { + const extern "C" fn c() {} + //~^ ERROR: this could be a `const fn` + + #[rustfmt::skip] + const extern fn implicit_c() {} + //~^ ERROR: this could be a `const fn` + + // any item functions in extern block won't trigger this lint + extern "C" { + fn c_in_block(); + } + } } mod issue12677 { @@ -174,3 +189,18 @@ mod issue12677 { } } } + +mod with_ty_alias { + trait FooTrait { + type Foo: std::fmt::Debug; + fn bar(_: Self::Foo) {} + } + impl FooTrait for () { + type Foo = i32; + } + // NOTE: When checking the type of a function param, make sure it is not an alias with + // `AliasTyKind::Projection` before calling `TyCtxt::type_of` to find out what the actual type + // is. Because the associate ty could have no default, therefore would cause ICE, as demostrated + // in this test. + const fn alias_ty_is_projection(bar: <() as FooTrait>::Foo) {} +} diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.rs b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.rs index 5e4e2c58e5a..4ac56f4c803 100644 --- a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.rs +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.rs @@ -143,6 +143,21 @@ mod msrv { let bar = Bar { val: 1 }; let _ = unsafe { bar.val }; } + + #[clippy::msrv = "1.62"] + mod with_extern { + extern "C" fn c() {} + //~^ ERROR: this could be a `const fn` + + #[rustfmt::skip] + extern fn implicit_c() {} + //~^ ERROR: this could be a `const fn` + + // any item functions in extern block won't trigger this lint + extern "C" { + fn c_in_block(); + } + } } mod issue12677 { @@ -174,3 +189,18 @@ mod issue12677 { } } } + +mod with_ty_alias { + trait FooTrait { + type Foo: std::fmt::Debug; + fn bar(_: Self::Foo) {} + } + impl FooTrait for () { + type Foo = i32; + } + // NOTE: When checking the type of a function param, make sure it is not an alias with + // `AliasTyKind::Projection` before calling `TyCtxt::type_of` to find out what the actual type + // is. Because the associate ty could have no default, therefore would cause ICE, as demostrated + // in this test. + fn alias_ty_is_projection(bar: <() as FooTrait>::Foo) {} +} diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.stderr b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.stderr index 8302b074127..fb4db703103 100644 --- a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.stderr +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const.stderr @@ -211,7 +211,29 @@ LL | const fn union_access_can_be_const() { | +++++ error: this could be a `const fn` - --> tests/ui/missing_const_for_fn/could_be_const.rs:155:9 + --> tests/ui/missing_const_for_fn/could_be_const.rs:149:9 + | +LL | extern "C" fn c() {} + | ^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | const extern "C" fn c() {} + | +++++ + +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const.rs:153:9 + | +LL | extern fn implicit_c() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | const extern fn implicit_c() {} + | +++++ + +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const.rs:170:9 | LL | / pub fn new(strings: Vec<String>) -> Self { LL | | Self { strings } @@ -224,7 +246,7 @@ LL | pub const fn new(strings: Vec<String>) -> Self { | +++++ error: this could be a `const fn` - --> tests/ui/missing_const_for_fn/could_be_const.rs:160:9 + --> tests/ui/missing_const_for_fn/could_be_const.rs:175:9 | LL | / pub fn empty() -> Self { LL | | Self { strings: Vec::new() } @@ -237,7 +259,7 @@ LL | pub const fn empty() -> Self { | +++++ error: this could be a `const fn` - --> tests/ui/missing_const_for_fn/could_be_const.rs:171:9 + --> tests/ui/missing_const_for_fn/could_be_const.rs:186:9 | LL | / pub fn new(text: String) -> Self { LL | | let vec = Vec::new(); @@ -250,5 +272,16 @@ help: make the function `const` LL | pub const fn new(text: String) -> Self { | +++++ -error: aborting due to 18 previous errors +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const.rs:205:5 + | +LL | fn alias_ty_is_projection(bar: <() as FooTrait>::Foo) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | const fn alias_ty_is_projection(bar: <() as FooTrait>::Foo) {} + | +++++ + +error: aborting due to 21 previous errors diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.fixed b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.fixed new file mode 100644 index 00000000000..c103db536ab --- /dev/null +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.fixed @@ -0,0 +1,14 @@ +#![warn(clippy::missing_const_for_fn)] +#![allow(unsupported_calling_conventions)] +#![feature(const_extern_fn)] + +const extern "C-unwind" fn c_unwind() {} +//~^ ERROR: this could be a `const fn` +const extern "system" fn system() {} +//~^ ERROR: this could be a `const fn` +const extern "system-unwind" fn system_unwind() {} +//~^ ERROR: this could be a `const fn` +pub const extern "stdcall" fn std_call() {} +//~^ ERROR: this could be a `const fn` +pub const extern "stdcall-unwind" fn std_call_unwind() {} +//~^ ERROR: this could be a `const fn` diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs new file mode 100644 index 00000000000..0f7020ae559 --- /dev/null +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs @@ -0,0 +1,14 @@ +#![warn(clippy::missing_const_for_fn)] +#![allow(unsupported_calling_conventions)] +#![feature(const_extern_fn)] + +extern "C-unwind" fn c_unwind() {} +//~^ ERROR: this could be a `const fn` +extern "system" fn system() {} +//~^ ERROR: this could be a `const fn` +extern "system-unwind" fn system_unwind() {} +//~^ ERROR: this could be a `const fn` +pub extern "stdcall" fn std_call() {} +//~^ ERROR: this could be a `const fn` +pub extern "stdcall-unwind" fn std_call_unwind() {} +//~^ ERROR: this could be a `const fn` diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.stderr b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.stderr new file mode 100644 index 00000000000..036094a367b --- /dev/null +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.stderr @@ -0,0 +1,59 @@ +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs:5:1 + | +LL | extern "C-unwind" fn c_unwind() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::missing-const-for-fn` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::missing_const_for_fn)]` +help: make the function `const` + | +LL | const extern "C-unwind" fn c_unwind() {} + | +++++ + +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs:7:1 + | +LL | extern "system" fn system() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | const extern "system" fn system() {} + | +++++ + +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs:9:1 + | +LL | extern "system-unwind" fn system_unwind() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | const extern "system-unwind" fn system_unwind() {} + | +++++ + +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs:11:1 + | +LL | pub extern "stdcall" fn std_call() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | pub const extern "stdcall" fn std_call() {} + | +++++ + +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/could_be_const_with_const_extern_fn.rs:13:1 + | +LL | pub extern "stdcall-unwind" fn std_call_unwind() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: make the function `const` + | +LL | pub const extern "stdcall-unwind" fn std_call_unwind() {} + | +++++ + +error: aborting due to 5 previous errors + diff --git a/src/tools/clippy/tests/ui/thread_local_initializer_can_be_made_const.fixed b/src/tools/clippy/tests/ui/missing_const_for_thread_local.fixed index 4c9bd0bd863..90b31b9b5d2 100644 --- a/src/tools/clippy/tests/ui/thread_local_initializer_can_be_made_const.fixed +++ b/src/tools/clippy/tests/ui/missing_const_for_thread_local.fixed @@ -1,4 +1,4 @@ -#![warn(clippy::thread_local_initializer_can_be_made_const)] +#![warn(clippy::missing_const_for_thread_local)] use std::cell::{Cell, RefCell}; diff --git a/src/tools/clippy/tests/ui/thread_local_initializer_can_be_made_const.rs b/src/tools/clippy/tests/ui/missing_const_for_thread_local.rs index eb336f0dd19..f97e4848fd7 100644 --- a/src/tools/clippy/tests/ui/thread_local_initializer_can_be_made_const.rs +++ b/src/tools/clippy/tests/ui/missing_const_for_thread_local.rs @@ -1,4 +1,4 @@ -#![warn(clippy::thread_local_initializer_can_be_made_const)] +#![warn(clippy::missing_const_for_thread_local)] use std::cell::{Cell, RefCell}; diff --git a/src/tools/clippy/tests/ui/thread_local_initializer_can_be_made_const.stderr b/src/tools/clippy/tests/ui/missing_const_for_thread_local.stderr index b4f8bd822b0..c143a37454f 100644 --- a/src/tools/clippy/tests/ui/thread_local_initializer_can_be_made_const.stderr +++ b/src/tools/clippy/tests/ui/missing_const_for_thread_local.stderr @@ -1,38 +1,38 @@ error: initializer for `thread_local` value can be made `const` - --> tests/ui/thread_local_initializer_can_be_made_const.rs:8:41 + --> tests/ui/missing_const_for_thread_local.rs:8:41 | LL | static BUF_1: RefCell<String> = RefCell::new(String::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `const { RefCell::new(String::new()) }` | - = note: `-D clippy::thread-local-initializer-can-be-made-const` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::thread_local_initializer_can_be_made_const)]` + = note: `-D clippy::missing-const-for-thread-local` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::missing_const_for_thread_local)]` error: initializer for `thread_local` value can be made `const` - --> tests/ui/thread_local_initializer_can_be_made_const.rs:18:29 + --> tests/ui/missing_const_for_thread_local.rs:18:29 | LL | static SIMPLE:i32 = 1; | ^ help: replace with: `const { 1 }` error: initializer for `thread_local` value can be made `const` - --> tests/ui/thread_local_initializer_can_be_made_const.rs:24:59 + --> tests/ui/missing_const_for_thread_local.rs:24:59 | LL | static BUF_3_CAN_BE_MADE_CONST: RefCell<String> = RefCell::new(String::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `const { RefCell::new(String::new()) }` error: initializer for `thread_local` value can be made `const` - --> tests/ui/thread_local_initializer_can_be_made_const.rs:26:59 + --> tests/ui/missing_const_for_thread_local.rs:26:59 | LL | static BUF_4_CAN_BE_MADE_CONST: RefCell<String> = RefCell::new(String::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `const { RefCell::new(String::new()) }` error: initializer for `thread_local` value can be made `const` - --> tests/ui/thread_local_initializer_can_be_made_const.rs:32:31 + --> tests/ui/missing_const_for_thread_local.rs:32:31 | LL | static PEEL_ME: i32 = { 1 }; | ^^^^^ help: replace with: `const { 1 }` error: initializer for `thread_local` value can be made `const` - --> tests/ui/thread_local_initializer_can_be_made_const.rs:34:36 + --> tests/ui/missing_const_for_thread_local.rs:34:36 | LL | static PEEL_ME_MANY: i32 = { let x = 1; x * x }; | ^^^^^^^^^^^^^^^^^^^^ help: replace with: `const { { let x = 1; x * x } }` diff --git a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.rs b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.rs index eee62122fdf..162ec82aede 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.rs +++ b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.rs @@ -232,43 +232,48 @@ async fn async_vec2(b: &mut Vec<bool>) { } fn non_mut(n: &str) {} //Should warn -pub async fn call_in_closure1(n: &mut str) { +async fn call_in_closure1(n: &mut str) { (|| non_mut(n))() } fn str_mut(str: &mut String) -> bool { str.pop().is_some() } //Should not warn -pub async fn call_in_closure2(str: &mut String) { +async fn call_in_closure2(str: &mut String) { (|| str_mut(str))(); } // Should not warn. -pub async fn closure(n: &mut usize) -> impl '_ + FnMut() { +async fn closure(n: &mut usize) -> impl '_ + FnMut() { || { *n += 1; } } // Should warn. -pub fn closure2(n: &mut usize) -> impl '_ + FnMut() -> usize { +fn closure2(n: &mut usize) -> impl '_ + FnMut() -> usize { //~^ ERROR: this argument is a mutable reference, but not used mutably || *n + 1 } // Should not warn. -pub async fn closure3(n: &mut usize) { +async fn closure3(n: &mut usize) { (|| *n += 1)(); } // Should warn. -pub async fn closure4(n: &mut usize) { +async fn closure4(n: &mut usize) { //~^ ERROR: this argument is a mutable reference, but not used mutably (|| { let _x = *n + 1; })(); } +// Should not warn: pub +pub fn pub_foo(s: &mut Vec<u32>, b: &u32, x: &mut u32) { + *x += *b + s.len() as u32; +} + // Should not warn. async fn _f(v: &mut Vec<()>) { let x = || v.pop(); @@ -365,4 +370,5 @@ fn main() { used_as_path; let _: fn(&mut u32) = passed_as_local; let _ = if v[0] == 0 { ty_unify_1 } else { ty_unify_2 }; + pub_foo(&mut v, &0, &mut u); } diff --git a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.stderr b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.stderr index 51e3ba37ded..f462fa9099e 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.stderr +++ b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut.stderr @@ -108,109 +108,103 @@ LL | async fn inner_async3(x: &mut i32, y: &mut u32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:235:34 + --> tests/ui/needless_pass_by_ref_mut.rs:235:30 | -LL | pub async fn call_in_closure1(n: &mut str) { - | ^^^^^^^^ help: consider changing to: `&str` - | - = warning: changing this function will impact semver compatibility +LL | async fn call_in_closure1(n: &mut str) { + | ^^^^^^^^ help: consider changing to: `&str` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:254:20 - | -LL | pub fn closure2(n: &mut usize) -> impl '_ + FnMut() -> usize { - | ^^^^^^^^^^ help: consider changing to: `&usize` + --> tests/ui/needless_pass_by_ref_mut.rs:254:16 | - = warning: changing this function will impact semver compatibility +LL | fn closure2(n: &mut usize) -> impl '_ + FnMut() -> usize { + | ^^^^^^^^^^ help: consider changing to: `&usize` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:265:26 - | -LL | pub async fn closure4(n: &mut usize) { - | ^^^^^^^^^^ help: consider changing to: `&usize` + --> tests/ui/needless_pass_by_ref_mut.rs:265:22 | - = warning: changing this function will impact semver compatibility +LL | async fn closure4(n: &mut usize) { + | ^^^^^^^^^^ help: consider changing to: `&usize` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:314:12 + --> tests/ui/needless_pass_by_ref_mut.rs:319:12 | LL | fn bar(&mut self) {} | ^^^^^^^^^ help: consider changing to: `&self` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:316:18 + --> tests/ui/needless_pass_by_ref_mut.rs:321:18 | LL | async fn foo(&mut self, u: &mut i32, v: &mut u32) { | ^^^^^^^^^ help: consider changing to: `&self` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:316:45 + --> tests/ui/needless_pass_by_ref_mut.rs:321:45 | LL | async fn foo(&mut self, u: &mut i32, v: &mut u32) { | ^^^^^^^^ help: consider changing to: `&u32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:324:46 + --> tests/ui/needless_pass_by_ref_mut.rs:329:46 | LL | async fn foo2(&mut self, u: &mut i32, v: &mut u32) { | ^^^^^^^^ help: consider changing to: `&u32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:340:18 + --> tests/ui/needless_pass_by_ref_mut.rs:345:18 | LL | fn _empty_tup(x: &mut (())) {} | ^^^^^^^^^ help: consider changing to: `&()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:341:19 + --> tests/ui/needless_pass_by_ref_mut.rs:346:19 | LL | fn _single_tup(x: &mut ((i32,))) {} | ^^^^^^^^^^^^^ help: consider changing to: `&(i32,)` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:342:18 + --> tests/ui/needless_pass_by_ref_mut.rs:347:18 | LL | fn _multi_tup(x: &mut ((i32, u32))) {} | ^^^^^^^^^^^^^^^^^ help: consider changing to: `&(i32, u32)` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:343:11 + --> tests/ui/needless_pass_by_ref_mut.rs:348:11 | LL | fn _fn(x: &mut (fn())) {} | ^^^^^^^^^^^ help: consider changing to: `&fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:345:23 + --> tests/ui/needless_pass_by_ref_mut.rs:350:23 | LL | fn _extern_rust_fn(x: &mut extern "Rust" fn()) {} | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&extern "Rust" fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:346:20 + --> tests/ui/needless_pass_by_ref_mut.rs:351:20 | LL | fn _extern_c_fn(x: &mut extern "C" fn()) {} | ^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&extern "C" fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:347:18 + --> tests/ui/needless_pass_by_ref_mut.rs:352:18 | LL | fn _unsafe_fn(x: &mut unsafe fn()) {} | ^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:348:25 + --> tests/ui/needless_pass_by_ref_mut.rs:353:25 | LL | fn _unsafe_extern_fn(x: &mut unsafe extern "C" fn()) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe extern "C" fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:349:20 + --> tests/ui/needless_pass_by_ref_mut.rs:354:20 | LL | fn _fn_with_arg(x: &mut unsafe extern "C" fn(i32)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe extern "C" fn(i32)` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:350:20 + --> tests/ui/needless_pass_by_ref_mut.rs:355:20 | LL | fn _fn_with_ret(x: &mut unsafe extern "C" fn() -> (i32)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe extern "C" fn() -> (i32)` diff --git a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.fixed b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.fixed index 3c2576213cd..f26b39ea6a1 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.fixed +++ b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.fixed @@ -5,7 +5,7 @@ #![allow(clippy::redundant_closure_call)] #![warn(clippy::needless_pass_by_ref_mut)] -pub async fn inner_async3(x: &i32, y: &mut u32) { +async fn inner_async3(x: &i32, y: &mut u32) { //~^ ERROR: this argument is a mutable reference, but not used mutably async { *y += 1; @@ -13,7 +13,7 @@ pub async fn inner_async3(x: &i32, y: &mut u32) { .await; } -pub async fn inner_async4(u: &mut i32, v: &u32) { +async fn inner_async4(u: &mut i32, v: &u32) { //~^ ERROR: this argument is a mutable reference, but not used mutably async { *u += 1; diff --git a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.rs b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.rs index 34b0b564deb..4220215b1fe 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.rs +++ b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.rs @@ -5,7 +5,7 @@ #![allow(clippy::redundant_closure_call)] #![warn(clippy::needless_pass_by_ref_mut)] -pub async fn inner_async3(x: &mut i32, y: &mut u32) { +async fn inner_async3(x: &mut i32, y: &mut u32) { //~^ ERROR: this argument is a mutable reference, but not used mutably async { *y += 1; @@ -13,7 +13,7 @@ pub async fn inner_async3(x: &mut i32, y: &mut u32) { .await; } -pub async fn inner_async4(u: &mut i32, v: &mut u32) { +async fn inner_async4(u: &mut i32, v: &mut u32) { //~^ ERROR: this argument is a mutable reference, but not used mutably async { *u += 1; diff --git a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.stderr b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.stderr index c8753603225..1c0136cf5d5 100644 --- a/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.stderr +++ b/src/tools/clippy/tests/ui/needless_pass_by_ref_mut2.stderr @@ -1,20 +1,17 @@ error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut2.rs:8:30 + --> tests/ui/needless_pass_by_ref_mut2.rs:8:26 | -LL | pub async fn inner_async3(x: &mut i32, y: &mut u32) { - | ^^^^^^^^ help: consider changing to: `&i32` +LL | async fn inner_async3(x: &mut i32, y: &mut u32) { + | ^^^^^^^^ help: consider changing to: `&i32` | - = warning: changing this function will impact semver compatibility = note: `-D clippy::needless-pass-by-ref-mut` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_ref_mut)]` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut2.rs:16:43 + --> tests/ui/needless_pass_by_ref_mut2.rs:16:39 | -LL | pub async fn inner_async4(u: &mut i32, v: &mut u32) { - | ^^^^^^^^ help: consider changing to: `&u32` - | - = warning: changing this function will impact semver compatibility +LL | async fn inner_async4(u: &mut i32, v: &mut u32) { + | ^^^^^^^^ help: consider changing to: `&u32` error: aborting due to 2 previous errors diff --git a/src/tools/clippy/tests/ui/needless_return.fixed b/src/tools/clippy/tests/ui/needless_return.fixed index 853f685f04c..fc4129e1db8 100644 --- a/src/tools/clippy/tests/ui/needless_return.fixed +++ b/src/tools/clippy/tests/ui/needless_return.fixed @@ -228,12 +228,41 @@ fn needless_return_macro() -> String { format!("Hello {}", "world!") } -fn issue_9361() -> i32 { - let n = 1; - #[allow(clippy::arithmetic_side_effects)] +fn issue_9361(n: i32) -> i32 { + #[expect(clippy::arithmetic_side_effects)] return n + n; } +mod issue_12998 { + fn expect_lint() -> i32 { + let x = 1; + + #[expect(clippy::needless_return)] + return x; + } + + fn expect_group() -> i32 { + let x = 1; + + #[expect(clippy::style)] + return x; + } + + fn expect_all() -> i32 { + let x = 1; + + #[expect(clippy::all)] + return x; + } + + fn expect_warnings() -> i32 { + let x = 1; + + #[expect(warnings)] + return x; + } +} + fn issue8336(x: i32) -> bool { if x > 0 { println!("something"); diff --git a/src/tools/clippy/tests/ui/needless_return.rs b/src/tools/clippy/tests/ui/needless_return.rs index e9c1e0e8ae8..61c7a02008f 100644 --- a/src/tools/clippy/tests/ui/needless_return.rs +++ b/src/tools/clippy/tests/ui/needless_return.rs @@ -236,12 +236,41 @@ fn needless_return_macro() -> String { return format!("Hello {}", "world!"); } -fn issue_9361() -> i32 { - let n = 1; - #[allow(clippy::arithmetic_side_effects)] +fn issue_9361(n: i32) -> i32 { + #[expect(clippy::arithmetic_side_effects)] return n + n; } +mod issue_12998 { + fn expect_lint() -> i32 { + let x = 1; + + #[expect(clippy::needless_return)] + return x; + } + + fn expect_group() -> i32 { + let x = 1; + + #[expect(clippy::style)] + return x; + } + + fn expect_all() -> i32 { + let x = 1; + + #[expect(clippy::all)] + return x; + } + + fn expect_warnings() -> i32 { + let x = 1; + + #[expect(warnings)] + return x; + } +} + fn issue8336(x: i32) -> bool { if x > 0 { println!("something"); diff --git a/src/tools/clippy/tests/ui/needless_return.stderr b/src/tools/clippy/tests/ui/needless_return.stderr index 6c891fe7ad3..ea9c230eafd 100644 --- a/src/tools/clippy/tests/ui/needless_return.stderr +++ b/src/tools/clippy/tests/ui/needless_return.stderr @@ -483,7 +483,7 @@ LL + format!("Hello {}", "world!") | error: unneeded `return` statement - --> tests/ui/needless_return.rs:248:9 + --> tests/ui/needless_return.rs:277:9 | LL | return true; | ^^^^^^^^^^^ @@ -497,7 +497,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:250:9 + --> tests/ui/needless_return.rs:279:9 | LL | return false; | ^^^^^^^^^^^^ @@ -509,7 +509,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:257:13 + --> tests/ui/needless_return.rs:286:13 | LL | return 10; | ^^^^^^^^^ @@ -524,7 +524,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:260:13 + --> tests/ui/needless_return.rs:289:13 | LL | return 100; | ^^^^^^^^^^ @@ -537,7 +537,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:268:9 + --> tests/ui/needless_return.rs:297:9 | LL | return 0; | ^^^^^^^^ @@ -549,7 +549,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:275:13 + --> tests/ui/needless_return.rs:304:13 | LL | return *(x as *const isize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -564,7 +564,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:277:13 + --> tests/ui/needless_return.rs:306:13 | LL | return !*(x as *const isize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -577,7 +577,7 @@ LL ~ } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:284:20 + --> tests/ui/needless_return.rs:313:20 | LL | let _ = 42; | ____________________^ @@ -594,7 +594,7 @@ LL + let _ = 42; | error: unneeded `return` statement - --> tests/ui/needless_return.rs:291:20 + --> tests/ui/needless_return.rs:320:20 | LL | let _ = 42; return; | ^^^^^^^ @@ -606,7 +606,7 @@ LL + let _ = 42; | error: unneeded `return` statement - --> tests/ui/needless_return.rs:303:9 + --> tests/ui/needless_return.rs:332:9 | LL | return Ok(format!("ok!")); | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -618,7 +618,7 @@ LL + Ok(format!("ok!")) | error: unneeded `return` statement - --> tests/ui/needless_return.rs:305:9 + --> tests/ui/needless_return.rs:334:9 | LL | return Err(format!("err!")); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -630,7 +630,7 @@ LL + Err(format!("err!")) | error: unneeded `return` statement - --> tests/ui/needless_return.rs:311:9 + --> tests/ui/needless_return.rs:340:9 | LL | return if true { 1 } else { 2 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -642,7 +642,7 @@ LL + if true { 1 } else { 2 } | error: unneeded `return` statement - --> tests/ui/needless_return.rs:315:9 + --> tests/ui/needless_return.rs:344:9 | LL | return if b1 { 0 } else { 1 } | if b2 { 2 } else { 3 } | if b3 { 4 } else { 5 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -654,7 +654,7 @@ LL + (if b1 { 0 } else { 1 } | if b2 { 2 } else { 3 } | if b3 { 4 } else | error: unneeded `return` statement - --> tests/ui/needless_return.rs:336:5 + --> tests/ui/needless_return.rs:365:5 | LL | return { "a".to_string() } + "b" + { "c" }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/overflow_check_conditional.rs b/src/tools/clippy/tests/ui/overflow_check_conditional.rs deleted file mode 100644 index a70bb3bc47b..00000000000 --- a/src/tools/clippy/tests/ui/overflow_check_conditional.rs +++ /dev/null @@ -1,36 +0,0 @@ -#![warn(clippy::overflow_check_conditional)] -#![allow(clippy::needless_if)] - -fn test(a: u32, b: u32, c: u32) { - if a + b < a {} - //~^ ERROR: you are trying to use classic C overflow conditions that will fail in Rust - //~| NOTE: `-D clippy::overflow-check-conditional` implied by `-D warnings` - if a > a + b {} - //~^ ERROR: you are trying to use classic C overflow conditions that will fail in Rust - if a + b < b {} - //~^ ERROR: you are trying to use classic C overflow conditions that will fail in Rust - if b > a + b {} - //~^ ERROR: you are trying to use classic C overflow conditions that will fail in Rust - if a - b > b {} - //~^ ERROR: you are trying to use classic C underflow conditions that will fail in Rus - if b < a - b {} - //~^ ERROR: you are trying to use classic C underflow conditions that will fail in Rus - if a - b > a {} - //~^ ERROR: you are trying to use classic C underflow conditions that will fail in Rus - if a < a - b {} - //~^ ERROR: you are trying to use classic C underflow conditions that will fail in Rus - if a + b < c {} - if c > a + b {} - if a - b < c {} - if c > a - b {} - let i = 1.1; - let j = 2.2; - if i + j < i {} - if i - j < i {} - if i > i + j {} - if i - j < i {} -} - -fn main() { - test(1, 2, 3) -} diff --git a/src/tools/clippy/tests/ui/overflow_check_conditional.stderr b/src/tools/clippy/tests/ui/overflow_check_conditional.stderr deleted file mode 100644 index c14532bad5a..00000000000 --- a/src/tools/clippy/tests/ui/overflow_check_conditional.stderr +++ /dev/null @@ -1,53 +0,0 @@ -error: you are trying to use classic C overflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:5:8 - | -LL | if a + b < a {} - | ^^^^^^^^^ - | - = note: `-D clippy::overflow-check-conditional` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::overflow_check_conditional)]` - -error: you are trying to use classic C overflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:8:8 - | -LL | if a > a + b {} - | ^^^^^^^^^ - -error: you are trying to use classic C overflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:10:8 - | -LL | if a + b < b {} - | ^^^^^^^^^ - -error: you are trying to use classic C overflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:12:8 - | -LL | if b > a + b {} - | ^^^^^^^^^ - -error: you are trying to use classic C underflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:14:8 - | -LL | if a - b > b {} - | ^^^^^^^^^ - -error: you are trying to use classic C underflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:16:8 - | -LL | if b < a - b {} - | ^^^^^^^^^ - -error: you are trying to use classic C underflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:18:8 - | -LL | if a - b > a {} - | ^^^^^^^^^ - -error: you are trying to use classic C underflow conditions that will fail in Rust - --> tests/ui/overflow_check_conditional.rs:20:8 - | -LL | if a < a - b {} - | ^^^^^^^^^ - -error: aborting due to 8 previous errors - diff --git a/src/tools/clippy/tests/ui/panicking_overflow_checks.rs b/src/tools/clippy/tests/ui/panicking_overflow_checks.rs new file mode 100644 index 00000000000..dc2ddeada1e --- /dev/null +++ b/src/tools/clippy/tests/ui/panicking_overflow_checks.rs @@ -0,0 +1,27 @@ +#![warn(clippy::panicking_overflow_checks)] +#![allow(clippy::needless_if)] + +fn test(a: u32, b: u32, c: u32) { + if a + b < a {} //~ panicking_overflow_checks + if a > a + b {} //~ panicking_overflow_checks + if a + b < b {} //~ panicking_overflow_checks + if b > a + b {} //~ panicking_overflow_checks + if a - b > b {} + if b < a - b {} + if a - b > a {} //~ panicking_overflow_checks + if a < a - b {} //~ panicking_overflow_checks + if a + b < c {} + if c > a + b {} + if a - b < c {} + if c > a - b {} + let i = 1.1; + let j = 2.2; + if i + j < i {} + if i - j < i {} + if i > i + j {} + if i - j < i {} +} + +fn main() { + test(1, 2, 3) +} diff --git a/src/tools/clippy/tests/ui/panicking_overflow_checks.stderr b/src/tools/clippy/tests/ui/panicking_overflow_checks.stderr new file mode 100644 index 00000000000..1fae0457889 --- /dev/null +++ b/src/tools/clippy/tests/ui/panicking_overflow_checks.stderr @@ -0,0 +1,41 @@ +error: you are trying to use classic C overflow conditions that will fail in Rust + --> tests/ui/panicking_overflow_checks.rs:5:8 + | +LL | if a + b < a {} + | ^^^^^^^^^ + | + = note: `-D clippy::panicking-overflow-checks` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::panicking_overflow_checks)]` + +error: you are trying to use classic C overflow conditions that will fail in Rust + --> tests/ui/panicking_overflow_checks.rs:6:8 + | +LL | if a > a + b {} + | ^^^^^^^^^ + +error: you are trying to use classic C overflow conditions that will fail in Rust + --> tests/ui/panicking_overflow_checks.rs:7:8 + | +LL | if a + b < b {} + | ^^^^^^^^^ + +error: you are trying to use classic C overflow conditions that will fail in Rust + --> tests/ui/panicking_overflow_checks.rs:8:8 + | +LL | if b > a + b {} + | ^^^^^^^^^ + +error: you are trying to use classic C overflow conditions that will fail in Rust + --> tests/ui/panicking_overflow_checks.rs:11:8 + | +LL | if a - b > a {} + | ^^^^^^^^^ + +error: you are trying to use classic C overflow conditions that will fail in Rust + --> tests/ui/panicking_overflow_checks.rs:12:8 + | +LL | if a < a - b {} + | ^^^^^^^^^ + +error: aborting due to 6 previous errors + diff --git a/src/tools/clippy/tests/ui/ptr_as_ptr.stderr b/src/tools/clippy/tests/ui/ptr_as_ptr.stderr index e162f35baf5..18462620b0a 100644 --- a/src/tools/clippy/tests/ui/ptr_as_ptr.stderr +++ b/src/tools/clippy/tests/ui/ptr_as_ptr.stderr @@ -1,4 +1,4 @@ -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:18:33 | LL | *unsafe { Box::from_raw(Box::into_raw(Box::new(o)) as *mut super::issue_11278_a::T<String>) } @@ -7,37 +7,37 @@ LL | *unsafe { Box::from_raw(Box::into_raw(Box::new(o)) as *mut super::i = note: `-D clippy::ptr-as-ptr` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::ptr_as_ptr)]` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:27:13 | LL | let _ = ptr as *const i32; | ^^^^^^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `ptr.cast::<i32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:28:13 | LL | let _ = mut_ptr as *mut i32; | ^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `mut_ptr.cast::<i32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:33:17 | LL | let _ = *ptr_ptr as *const i32; | ^^^^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `(*ptr_ptr).cast::<i32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:46:25 | LL | let _: *const i32 = ptr as *const _; | ^^^^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `ptr.cast()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:47:23 | LL | let _: *mut i32 = mut_ptr as _; | ^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `mut_ptr.cast()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:50:21 | LL | let _ = inline!($ptr as *const i32); @@ -45,157 +45,157 @@ LL | let _ = inline!($ptr as *const i32); | = note: this error originates in the macro `__inline_mac_fn_main` (in Nightly builds, run with -Z macro-backtrace for more info) -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:71:13 | LL | let _ = ptr as *const i32; | ^^^^^^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `ptr.cast::<i32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:72:13 | LL | let _ = mut_ptr as *mut i32; | ^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast`, a safer alternative: `mut_ptr.cast::<i32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:79:9 | LL | ptr::null_mut() as *mut u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null_mut::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:83:9 | LL | std::ptr::null_mut() as *mut u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `std::ptr::null_mut::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:88:9 | LL | ptr::null_mut() as *mut u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null_mut::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:92:9 | LL | core::ptr::null_mut() as *mut u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `core::ptr::null_mut::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:97:9 | LL | ptr::null() as *const u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:101:9 | LL | std::ptr::null() as *const u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `std::ptr::null::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:106:9 | LL | ptr::null() as *const u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:110:9 | LL | core::ptr::null() as *const u32 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `core::ptr::null::<u32>()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:117:9 | LL | ptr::null_mut() as *mut _ | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:121:9 | LL | std::ptr::null_mut() as *mut _ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `std::ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:126:9 | LL | ptr::null_mut() as *mut _ | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:130:9 | LL | core::ptr::null_mut() as *mut _ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `core::ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:135:9 | LL | ptr::null() as *const _ | ^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:139:9 | LL | std::ptr::null() as *const _ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `std::ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:144:9 | LL | ptr::null() as *const _ | ^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:148:9 | LL | core::ptr::null() as *const _ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `core::ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:155:9 | LL | ptr::null_mut() as _ | ^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:159:9 | LL | std::ptr::null_mut() as _ | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `std::ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:164:9 | LL | ptr::null_mut() as _ | ^^^^^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:168:9 | LL | core::ptr::null_mut() as _ | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `core::ptr::null_mut()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:173:9 | LL | ptr::null() as _ | ^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:177:9 | LL | std::ptr::null() as _ | ^^^^^^^^^^^^^^^^^^^^^ help: try call directly: `std::ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:182:9 | LL | ptr::null() as _ | ^^^^^^^^^^^^^^^^ help: try call directly: `ptr::null()` -error: `as` casting between raw pointers without changing its mutability +error: `as` casting between raw pointers without changing their constness --> tests/ui/ptr_as_ptr.rs:186:9 | LL | core::ptr::null() as _ diff --git a/src/tools/clippy/tests/ui/rename.fixed b/src/tools/clippy/tests/ui/rename.fixed index 24d0f797542..d70c9f8d06c 100644 --- a/src/tools/clippy/tests/ui/rename.fixed +++ b/src/tools/clippy/tests/ui/rename.fixed @@ -24,9 +24,11 @@ #![allow(clippy::expect_used)] #![allow(clippy::map_unwrap_or)] #![allow(clippy::unwrap_used)] +#![allow(clippy::panicking_overflow_checks)] #![allow(clippy::needless_borrow)] #![allow(clippy::single_char_add_str)] #![allow(clippy::module_name_repetitions)] +#![allow(clippy::missing_const_for_thread_local)] #![allow(clippy::recursive_format_impl)] #![allow(clippy::unwrap_or_default)] #![allow(clippy::invisible_characters)] @@ -77,12 +79,14 @@ #![warn(clippy::map_unwrap_or)] #![warn(clippy::map_unwrap_or)] #![warn(clippy::unwrap_used)] +#![warn(clippy::panicking_overflow_checks)] #![warn(clippy::needless_borrow)] #![warn(clippy::expect_used)] #![warn(clippy::map_unwrap_or)] #![warn(clippy::unwrap_used)] #![warn(clippy::single_char_add_str)] #![warn(clippy::module_name_repetitions)] +#![warn(clippy::missing_const_for_thread_local)] #![warn(clippy::recursive_format_impl)] #![warn(clippy::unwrap_or_default)] #![warn(clippy::invisible_characters)] diff --git a/src/tools/clippy/tests/ui/rename.rs b/src/tools/clippy/tests/ui/rename.rs index be8da2fa1a3..8d0ac3c8f95 100644 --- a/src/tools/clippy/tests/ui/rename.rs +++ b/src/tools/clippy/tests/ui/rename.rs @@ -24,9 +24,11 @@ #![allow(clippy::expect_used)] #![allow(clippy::map_unwrap_or)] #![allow(clippy::unwrap_used)] +#![allow(clippy::panicking_overflow_checks)] #![allow(clippy::needless_borrow)] #![allow(clippy::single_char_add_str)] #![allow(clippy::module_name_repetitions)] +#![allow(clippy::missing_const_for_thread_local)] #![allow(clippy::recursive_format_impl)] #![allow(clippy::unwrap_or_default)] #![allow(clippy::invisible_characters)] @@ -77,12 +79,14 @@ #![warn(clippy::option_map_unwrap_or)] #![warn(clippy::option_map_unwrap_or_else)] #![warn(clippy::option_unwrap_used)] +#![warn(clippy::overflow_check_conditional)] #![warn(clippy::ref_in_deref)] #![warn(clippy::result_expect_used)] #![warn(clippy::result_map_unwrap_or_else)] #![warn(clippy::result_unwrap_used)] #![warn(clippy::single_char_push_str)] #![warn(clippy::stutter)] +#![warn(clippy::thread_local_initializer_can_be_made_const)] #![warn(clippy::to_string_in_display)] #![warn(clippy::unwrap_or_else_default)] #![warn(clippy::zero_width_space)] diff --git a/src/tools/clippy/tests/ui/rename.stderr b/src/tools/clippy/tests/ui/rename.stderr index 777ac20153d..d6637324a03 100644 --- a/src/tools/clippy/tests/ui/rename.stderr +++ b/src/tools/clippy/tests/ui/rename.stderr @@ -1,5 +1,5 @@ error: lint `clippy::almost_complete_letter_range` has been renamed to `clippy::almost_complete_range` - --> tests/ui/rename.rs:56:9 + --> tests/ui/rename.rs:58:9 | LL | #![warn(clippy::almost_complete_letter_range)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::almost_complete_range` @@ -8,346 +8,358 @@ LL | #![warn(clippy::almost_complete_letter_range)] = help: to override `-D warnings` add `#[allow(renamed_and_removed_lints)]` error: lint `clippy::blacklisted_name` has been renamed to `clippy::disallowed_names` - --> tests/ui/rename.rs:57:9 + --> tests/ui/rename.rs:59:9 | LL | #![warn(clippy::blacklisted_name)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_names` error: lint `clippy::block_in_if_condition_expr` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:58:9 + --> tests/ui/rename.rs:60:9 | LL | #![warn(clippy::block_in_if_condition_expr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::block_in_if_condition_stmt` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:59:9 + --> tests/ui/rename.rs:61:9 | LL | #![warn(clippy::block_in_if_condition_stmt)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::blocks_in_if_conditions` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:60:9 + --> tests/ui/rename.rs:62:9 | LL | #![warn(clippy::blocks_in_if_conditions)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::box_vec` has been renamed to `clippy::box_collection` - --> tests/ui/rename.rs:61:9 + --> tests/ui/rename.rs:63:9 | LL | #![warn(clippy::box_vec)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::box_collection` error: lint `clippy::const_static_lifetime` has been renamed to `clippy::redundant_static_lifetimes` - --> tests/ui/rename.rs:62:9 + --> tests/ui/rename.rs:64:9 | LL | #![warn(clippy::const_static_lifetime)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_static_lifetimes` error: lint `clippy::cyclomatic_complexity` has been renamed to `clippy::cognitive_complexity` - --> tests/ui/rename.rs:63:9 + --> tests/ui/rename.rs:65:9 | LL | #![warn(clippy::cyclomatic_complexity)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::cognitive_complexity` error: lint `clippy::derive_hash_xor_eq` has been renamed to `clippy::derived_hash_with_manual_eq` - --> tests/ui/rename.rs:64:9 + --> tests/ui/rename.rs:66:9 | LL | #![warn(clippy::derive_hash_xor_eq)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::derived_hash_with_manual_eq` error: lint `clippy::disallowed_method` has been renamed to `clippy::disallowed_methods` - --> tests/ui/rename.rs:65:9 + --> tests/ui/rename.rs:67:9 | LL | #![warn(clippy::disallowed_method)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_methods` error: lint `clippy::disallowed_type` has been renamed to `clippy::disallowed_types` - --> tests/ui/rename.rs:66:9 + --> tests/ui/rename.rs:68:9 | LL | #![warn(clippy::disallowed_type)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_types` error: lint `clippy::eval_order_dependence` has been renamed to `clippy::mixed_read_write_in_expression` - --> tests/ui/rename.rs:67:9 + --> tests/ui/rename.rs:69:9 | LL | #![warn(clippy::eval_order_dependence)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::mixed_read_write_in_expression` error: lint `clippy::identity_conversion` has been renamed to `clippy::useless_conversion` - --> tests/ui/rename.rs:68:9 + --> tests/ui/rename.rs:70:9 | LL | #![warn(clippy::identity_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::useless_conversion` error: lint `clippy::if_let_some_result` has been renamed to `clippy::match_result_ok` - --> tests/ui/rename.rs:69:9 + --> tests/ui/rename.rs:71:9 | LL | #![warn(clippy::if_let_some_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::match_result_ok` error: lint `clippy::incorrect_clone_impl_on_copy_type` has been renamed to `clippy::non_canonical_clone_impl` - --> tests/ui/rename.rs:70:9 + --> tests/ui/rename.rs:72:9 | LL | #![warn(clippy::incorrect_clone_impl_on_copy_type)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_clone_impl` error: lint `clippy::incorrect_partial_ord_impl_on_ord_type` has been renamed to `clippy::non_canonical_partial_ord_impl` - --> tests/ui/rename.rs:71:9 + --> tests/ui/rename.rs:73:9 | LL | #![warn(clippy::incorrect_partial_ord_impl_on_ord_type)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_partial_ord_impl` error: lint `clippy::integer_arithmetic` has been renamed to `clippy::arithmetic_side_effects` - --> tests/ui/rename.rs:72:9 + --> tests/ui/rename.rs:74:9 | LL | #![warn(clippy::integer_arithmetic)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::arithmetic_side_effects` error: lint `clippy::logic_bug` has been renamed to `clippy::overly_complex_bool_expr` - --> tests/ui/rename.rs:73:9 + --> tests/ui/rename.rs:75:9 | LL | #![warn(clippy::logic_bug)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::overly_complex_bool_expr` error: lint `clippy::new_without_default_derive` has been renamed to `clippy::new_without_default` - --> tests/ui/rename.rs:74:9 + --> tests/ui/rename.rs:76:9 | LL | #![warn(clippy::new_without_default_derive)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::new_without_default` error: lint `clippy::option_and_then_some` has been renamed to `clippy::bind_instead_of_map` - --> tests/ui/rename.rs:75:9 + --> tests/ui/rename.rs:77:9 | LL | #![warn(clippy::option_and_then_some)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::bind_instead_of_map` error: lint `clippy::option_expect_used` has been renamed to `clippy::expect_used` - --> tests/ui/rename.rs:76:9 + --> tests/ui/rename.rs:78:9 | LL | #![warn(clippy::option_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::option_map_unwrap_or` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:77:9 + --> tests/ui/rename.rs:79:9 | LL | #![warn(clippy::option_map_unwrap_or)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:78:9 + --> tests/ui/rename.rs:80:9 | LL | #![warn(clippy::option_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_unwrap_used` has been renamed to `clippy::unwrap_used` - --> tests/ui/rename.rs:79:9 + --> tests/ui/rename.rs:81:9 | LL | #![warn(clippy::option_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` +error: lint `clippy::overflow_check_conditional` has been renamed to `clippy::panicking_overflow_checks` + --> tests/ui/rename.rs:82:9 + | +LL | #![warn(clippy::overflow_check_conditional)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::panicking_overflow_checks` + error: lint `clippy::ref_in_deref` has been renamed to `clippy::needless_borrow` - --> tests/ui/rename.rs:80:9 + --> tests/ui/rename.rs:83:9 | LL | #![warn(clippy::ref_in_deref)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::needless_borrow` error: lint `clippy::result_expect_used` has been renamed to `clippy::expect_used` - --> tests/ui/rename.rs:81:9 + --> tests/ui/rename.rs:84:9 | LL | #![warn(clippy::result_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::result_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:82:9 + --> tests/ui/rename.rs:85:9 | LL | #![warn(clippy::result_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::result_unwrap_used` has been renamed to `clippy::unwrap_used` - --> tests/ui/rename.rs:83:9 + --> tests/ui/rename.rs:86:9 | LL | #![warn(clippy::result_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` error: lint `clippy::single_char_push_str` has been renamed to `clippy::single_char_add_str` - --> tests/ui/rename.rs:84:9 + --> tests/ui/rename.rs:87:9 | LL | #![warn(clippy::single_char_push_str)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::single_char_add_str` error: lint `clippy::stutter` has been renamed to `clippy::module_name_repetitions` - --> tests/ui/rename.rs:85:9 + --> tests/ui/rename.rs:88:9 | LL | #![warn(clippy::stutter)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::module_name_repetitions` +error: lint `clippy::thread_local_initializer_can_be_made_const` has been renamed to `clippy::missing_const_for_thread_local` + --> tests/ui/rename.rs:89:9 + | +LL | #![warn(clippy::thread_local_initializer_can_be_made_const)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::missing_const_for_thread_local` + error: lint `clippy::to_string_in_display` has been renamed to `clippy::recursive_format_impl` - --> tests/ui/rename.rs:86:9 + --> tests/ui/rename.rs:90:9 | LL | #![warn(clippy::to_string_in_display)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::recursive_format_impl` error: lint `clippy::unwrap_or_else_default` has been renamed to `clippy::unwrap_or_default` - --> tests/ui/rename.rs:87:9 + --> tests/ui/rename.rs:91:9 | LL | #![warn(clippy::unwrap_or_else_default)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_or_default` error: lint `clippy::zero_width_space` has been renamed to `clippy::invisible_characters` - --> tests/ui/rename.rs:88:9 + --> tests/ui/rename.rs:92:9 | LL | #![warn(clippy::zero_width_space)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::invisible_characters` error: lint `clippy::cast_ref_to_mut` has been renamed to `invalid_reference_casting` - --> tests/ui/rename.rs:89:9 + --> tests/ui/rename.rs:93:9 | LL | #![warn(clippy::cast_ref_to_mut)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_reference_casting` error: lint `clippy::clone_double_ref` has been renamed to `suspicious_double_ref_op` - --> tests/ui/rename.rs:90:9 + --> tests/ui/rename.rs:94:9 | LL | #![warn(clippy::clone_double_ref)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `suspicious_double_ref_op` error: lint `clippy::cmp_nan` has been renamed to `invalid_nan_comparisons` - --> tests/ui/rename.rs:91:9 + --> tests/ui/rename.rs:95:9 | LL | #![warn(clippy::cmp_nan)] | ^^^^^^^^^^^^^^^ help: use the new name: `invalid_nan_comparisons` error: lint `clippy::drop_bounds` has been renamed to `drop_bounds` - --> tests/ui/rename.rs:92:9 + --> tests/ui/rename.rs:96:9 | LL | #![warn(clippy::drop_bounds)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `drop_bounds` error: lint `clippy::drop_copy` has been renamed to `dropping_copy_types` - --> tests/ui/rename.rs:93:9 + --> tests/ui/rename.rs:97:9 | LL | #![warn(clippy::drop_copy)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `dropping_copy_types` error: lint `clippy::drop_ref` has been renamed to `dropping_references` - --> tests/ui/rename.rs:94:9 + --> tests/ui/rename.rs:98:9 | LL | #![warn(clippy::drop_ref)] | ^^^^^^^^^^^^^^^^ help: use the new name: `dropping_references` error: lint `clippy::fn_null_check` has been renamed to `useless_ptr_null_checks` - --> tests/ui/rename.rs:95:9 + --> tests/ui/rename.rs:99:9 | LL | #![warn(clippy::fn_null_check)] | ^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `useless_ptr_null_checks` error: lint `clippy::for_loop_over_option` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:96:9 + --> tests/ui/rename.rs:100:9 | LL | #![warn(clippy::for_loop_over_option)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loop_over_result` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:97:9 + --> tests/ui/rename.rs:101:9 | LL | #![warn(clippy::for_loop_over_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loops_over_fallibles` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:98:9 + --> tests/ui/rename.rs:102:9 | LL | #![warn(clippy::for_loops_over_fallibles)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::forget_copy` has been renamed to `forgetting_copy_types` - --> tests/ui/rename.rs:99:9 + --> tests/ui/rename.rs:103:9 | LL | #![warn(clippy::forget_copy)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_copy_types` error: lint `clippy::forget_ref` has been renamed to `forgetting_references` - --> tests/ui/rename.rs:100:9 + --> tests/ui/rename.rs:104:9 | LL | #![warn(clippy::forget_ref)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_references` error: lint `clippy::into_iter_on_array` has been renamed to `array_into_iter` - --> tests/ui/rename.rs:101:9 + --> tests/ui/rename.rs:105:9 | LL | #![warn(clippy::into_iter_on_array)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `array_into_iter` error: lint `clippy::invalid_atomic_ordering` has been renamed to `invalid_atomic_ordering` - --> tests/ui/rename.rs:102:9 + --> tests/ui/rename.rs:106:9 | LL | #![warn(clippy::invalid_atomic_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_atomic_ordering` error: lint `clippy::invalid_ref` has been renamed to `invalid_value` - --> tests/ui/rename.rs:103:9 + --> tests/ui/rename.rs:107:9 | LL | #![warn(clippy::invalid_ref)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_value` error: lint `clippy::invalid_utf8_in_unchecked` has been renamed to `invalid_from_utf8_unchecked` - --> tests/ui/rename.rs:104:9 + --> tests/ui/rename.rs:108:9 | LL | #![warn(clippy::invalid_utf8_in_unchecked)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_from_utf8_unchecked` error: lint `clippy::let_underscore_drop` has been renamed to `let_underscore_drop` - --> tests/ui/rename.rs:105:9 + --> tests/ui/rename.rs:109:9 | LL | #![warn(clippy::let_underscore_drop)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `let_underscore_drop` error: lint `clippy::mem_discriminant_non_enum` has been renamed to `enum_intrinsics_non_enums` - --> tests/ui/rename.rs:106:9 + --> tests/ui/rename.rs:110:9 | LL | #![warn(clippy::mem_discriminant_non_enum)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `enum_intrinsics_non_enums` error: lint `clippy::panic_params` has been renamed to `non_fmt_panics` - --> tests/ui/rename.rs:107:9 + --> tests/ui/rename.rs:111:9 | LL | #![warn(clippy::panic_params)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panics` error: lint `clippy::positional_named_format_parameters` has been renamed to `named_arguments_used_positionally` - --> tests/ui/rename.rs:108:9 + --> tests/ui/rename.rs:112:9 | LL | #![warn(clippy::positional_named_format_parameters)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `named_arguments_used_positionally` error: lint `clippy::temporary_cstring_as_ptr` has been renamed to `temporary_cstring_as_ptr` - --> tests/ui/rename.rs:109:9 + --> tests/ui/rename.rs:113:9 | LL | #![warn(clippy::temporary_cstring_as_ptr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `temporary_cstring_as_ptr` error: lint `clippy::undropped_manually_drops` has been renamed to `undropped_manually_drops` - --> tests/ui/rename.rs:110:9 + --> tests/ui/rename.rs:114:9 | LL | #![warn(clippy::undropped_manually_drops)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `undropped_manually_drops` error: lint `clippy::unknown_clippy_lints` has been renamed to `unknown_lints` - --> tests/ui/rename.rs:111:9 + --> tests/ui/rename.rs:115:9 | LL | #![warn(clippy::unknown_clippy_lints)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unknown_lints` error: lint `clippy::unused_label` has been renamed to `unused_labels` - --> tests/ui/rename.rs:112:9 + --> tests/ui/rename.rs:116:9 | LL | #![warn(clippy::unused_label)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_labels` error: lint `clippy::vtable_address_comparisons` has been renamed to `ambiguous_wide_pointer_comparisons` - --> tests/ui/rename.rs:113:9 + --> tests/ui/rename.rs:117:9 | LL | #![warn(clippy::vtable_address_comparisons)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `ambiguous_wide_pointer_comparisons` -error: aborting due to 58 previous errors +error: aborting due to 60 previous errors diff --git a/src/tools/clippy/tests/ui/set_contains_or_insert.rs b/src/tools/clippy/tests/ui/set_contains_or_insert.rs new file mode 100644 index 00000000000..8465007402a --- /dev/null +++ b/src/tools/clippy/tests/ui/set_contains_or_insert.rs @@ -0,0 +1,83 @@ +#![allow(unused)] +#![allow(clippy::nonminimal_bool)] +#![allow(clippy::needless_borrow)] +#![warn(clippy::set_contains_or_insert)] + +use std::collections::HashSet; + +fn main() { + should_warn_cases(); + + should_not_warn_cases(); +} + +fn should_warn_cases() { + let mut set = HashSet::new(); + let value = 5; + + if !set.contains(&value) { + set.insert(value); + println!("Just a comment"); + } + + if set.contains(&value) { + set.insert(value); + println!("Just a comment"); + } + + if !set.contains(&value) { + set.insert(value); + } + + if !!set.contains(&value) { + set.insert(value); + println!("Just a comment"); + } + + if (&set).contains(&value) { + set.insert(value); + } + + let borrow_value = &6; + if !set.contains(borrow_value) { + set.insert(*borrow_value); + } + + let borrow_set = &mut set; + if !borrow_set.contains(&value) { + borrow_set.insert(value); + } +} + +fn should_not_warn_cases() { + let mut set = HashSet::new(); + let value = 5; + let another_value = 6; + + if !set.contains(&value) { + set.insert(another_value); + } + + if !set.contains(&value) { + println!("Just a comment"); + } + + if simply_true() { + set.insert(value); + } + + if !set.contains(&value) { + set.replace(value); //it is not insert + println!("Just a comment"); + } + + if set.contains(&value) { + println!("value is already in set"); + } else { + set.insert(value); + } +} + +fn simply_true() -> bool { + true +} diff --git a/src/tools/clippy/tests/ui/set_contains_or_insert.stderr b/src/tools/clippy/tests/ui/set_contains_or_insert.stderr new file mode 100644 index 00000000000..507e20964fc --- /dev/null +++ b/src/tools/clippy/tests/ui/set_contains_or_insert.stderr @@ -0,0 +1,61 @@ +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:18:13 + | +LL | if !set.contains(&value) { + | ^^^^^^^^^^^^^^^^ +LL | set.insert(value); + | ^^^^^^^^^^^^^ + | + = note: `-D clippy::set-contains-or-insert` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::set_contains_or_insert)]` + +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:23:12 + | +LL | if set.contains(&value) { + | ^^^^^^^^^^^^^^^^ +LL | set.insert(value); + | ^^^^^^^^^^^^^ + +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:28:13 + | +LL | if !set.contains(&value) { + | ^^^^^^^^^^^^^^^^ +LL | set.insert(value); + | ^^^^^^^^^^^^^ + +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:32:14 + | +LL | if !!set.contains(&value) { + | ^^^^^^^^^^^^^^^^ +LL | set.insert(value); + | ^^^^^^^^^^^^^ + +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:37:15 + | +LL | if (&set).contains(&value) { + | ^^^^^^^^^^^^^^^^ +LL | set.insert(value); + | ^^^^^^^^^^^^^ + +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:42:13 + | +LL | if !set.contains(borrow_value) { + | ^^^^^^^^^^^^^^^^^^^^^^ +LL | set.insert(*borrow_value); + | ^^^^^^^^^^^^^^^^^^^^^ + +error: usage of `HashSet::insert` after `HashSet::contains` + --> tests/ui/set_contains_or_insert.rs:47:20 + | +LL | if !borrow_set.contains(&value) { + | ^^^^^^^^^^^^^^^^ +LL | borrow_set.insert(value); + | ^^^^^^^^^^^^^ + +error: aborting due to 7 previous errors + 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 8ee15440ccf..0db6fbfb7be 100644 --- a/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.rs +++ b/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.rs @@ -801,4 +801,30 @@ fn should_not_trigger_lint_with_explicit_drop() { } } +fn should_trigger_lint_in_if_let() { + let mutex = Mutex::new(vec![1]); + + if let Some(val) = mutex.lock().unwrap().first().copied() { + //~^ ERROR: temporary with significant `Drop` in `if let` scrutinee will live until the + //~| NOTE: this might lead to deadlocks or other unexpected behavior + println!("{}", val); + } + + // Should not trigger lint without the final `copied()`, because we actually hold a reference + // (i.e., the `val`) to the locked data. + if let Some(val) = mutex.lock().unwrap().first() { + println!("{}", val); + }; +} + +fn should_trigger_lint_in_while_let() { + let mutex = Mutex::new(vec![1]); + + while let Some(val) = mutex.lock().unwrap().pop() { + //~^ ERROR: temporary with significant `Drop` in `while let` scrutinee will live until the + //~| NOTE: this might lead to deadlocks or other unexpected behavior + println!("{}", val); + } +} + fn main() {} 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 4a483e79d8a..c0c93cd10c0 100644 --- a/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.stderr +++ b/src/tools/clippy/tests/ui/significant_drop_in_scrutinee.stderr @@ -541,5 +541,32 @@ LL ~ let value = mutex.lock().unwrap()[0]; LL ~ for val in [value, 2] { | -error: aborting due to 27 previous errors +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 + | +LL | if let Some(val) = mutex.lock().unwrap().first().copied() { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +... +LL | } + | - temporary lives until here + | + = note: this might lead to deadlocks or other unexpected behavior +help: try moving the temporary above the match + | +LL ~ let value = mutex.lock().unwrap().first().copied(); +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 + | +LL | while let Some(val) = mutex.lock().unwrap().pop() { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ +... +LL | } + | - temporary lives until here + | + = note: this might lead to deadlocks or other unexpected behavior + +error: aborting due to 29 previous errors diff --git a/src/tools/clippy/tests/ui/unnecessary_operation.fixed b/src/tools/clippy/tests/ui/unnecessary_operation.fixed index 11761c6c90e..006f123cbcd 100644 --- a/src/tools/clippy/tests/ui/unnecessary_operation.fixed +++ b/src/tools/clippy/tests/ui/unnecessary_operation.fixed @@ -43,7 +43,7 @@ fn get_number() -> i32 { 0 } -fn get_usize() -> usize { +const fn get_usize() -> usize { 0 } fn get_struct() -> Struct { @@ -113,4 +113,16 @@ fn main() { 'label: { break 'label }; + let () = const { + [42, 55][get_usize()]; + }; +} + +const _: () = { + [42, 55][get_usize()]; +}; + +const fn foo() { + assert!([42, 55].len() > get_usize()); + //~^ ERROR: unnecessary operation } diff --git a/src/tools/clippy/tests/ui/unnecessary_operation.rs b/src/tools/clippy/tests/ui/unnecessary_operation.rs index de0081289ac..b4067c74074 100644 --- a/src/tools/clippy/tests/ui/unnecessary_operation.rs +++ b/src/tools/clippy/tests/ui/unnecessary_operation.rs @@ -43,7 +43,7 @@ fn get_number() -> i32 { 0 } -fn get_usize() -> usize { +const fn get_usize() -> usize { 0 } fn get_struct() -> Struct { @@ -117,4 +117,16 @@ fn main() { 'label: { break 'label }; + let () = const { + [42, 55][get_usize()]; + }; +} + +const _: () = { + [42, 55][get_usize()]; +}; + +const fn foo() { + [42, 55][get_usize()]; + //~^ ERROR: unnecessary operation } diff --git a/src/tools/clippy/tests/ui/unnecessary_operation.stderr b/src/tools/clippy/tests/ui/unnecessary_operation.stderr index 27be5e6f4b9..036a9a44bba 100644 --- a/src/tools/clippy/tests/ui/unnecessary_operation.stderr +++ b/src/tools/clippy/tests/ui/unnecessary_operation.stderr @@ -119,5 +119,11 @@ LL | | s: String::from("blah"), LL | | }; | |______^ help: statement can be reduced to: `String::from("blah");` -error: aborting due to 19 previous errors +error: unnecessary operation + --> tests/ui/unnecessary_operation.rs:130:5 + | +LL | [42, 55][get_usize()]; + | ^^^^^^^^^^^^^^^^^^^^^^ help: statement can be written as: `assert!([42, 55].len() > get_usize());` + +error: aborting due to 20 previous errors diff --git a/src/tools/clippy/tests/ui/unnecessary_to_owned.fixed b/src/tools/clippy/tests/ui/unnecessary_to_owned.fixed index 1afa5ab54c4..fdcac8fb08d 100644 --- a/src/tools/clippy/tests/ui/unnecessary_to_owned.fixed +++ b/src/tools/clippy/tests/ui/unnecessary_to_owned.fixed @@ -157,6 +157,25 @@ fn main() { require_path(&std::path::PathBuf::from("x")); require_str(&String::from("x")); require_slice(&[String::from("x")]); + + let slice = [0u8; 1024]; + let _ref_str: &str = core::str::from_utf8(&slice).expect("not UTF-8"); + let _ref_str: &str = core::str::from_utf8(b"foo").unwrap(); + let _ref_str: &str = core::str::from_utf8(b"foo".as_slice()).unwrap(); + // Expression is of type `&String`, can't suggest `str::from_utf8` here + let _ref_string = &String::from_utf8(b"foo".to_vec()).unwrap(); + macro_rules! arg_from_macro { + () => { + b"foo".to_vec() + }; + } + macro_rules! string_from_utf8_from_macro { + () => { + &String::from_utf8(b"foo".to_vec()).unwrap() + }; + } + let _ref_str: &str = &String::from_utf8(arg_from_macro!()).unwrap(); + let _ref_str: &str = string_from_utf8_from_macro!(); } fn require_c_str(_: &CStr) {} diff --git a/src/tools/clippy/tests/ui/unnecessary_to_owned.rs b/src/tools/clippy/tests/ui/unnecessary_to_owned.rs index aa88dde43bf..10a9727a9a7 100644 --- a/src/tools/clippy/tests/ui/unnecessary_to_owned.rs +++ b/src/tools/clippy/tests/ui/unnecessary_to_owned.rs @@ -157,6 +157,25 @@ fn main() { require_path(&std::path::PathBuf::from("x").to_path_buf()); require_str(&String::from("x").to_string()); require_slice(&[String::from("x")].to_owned()); + + let slice = [0u8; 1024]; + let _ref_str: &str = &String::from_utf8(slice.to_vec()).expect("not UTF-8"); + let _ref_str: &str = &String::from_utf8(b"foo".to_vec()).unwrap(); + let _ref_str: &str = &String::from_utf8(b"foo".as_slice().to_owned()).unwrap(); + // Expression is of type `&String`, can't suggest `str::from_utf8` here + let _ref_string = &String::from_utf8(b"foo".to_vec()).unwrap(); + macro_rules! arg_from_macro { + () => { + b"foo".to_vec() + }; + } + macro_rules! string_from_utf8_from_macro { + () => { + &String::from_utf8(b"foo".to_vec()).unwrap() + }; + } + let _ref_str: &str = &String::from_utf8(arg_from_macro!()).unwrap(); + let _ref_str: &str = string_from_utf8_from_macro!(); } fn require_c_str(_: &CStr) {} diff --git a/src/tools/clippy/tests/ui/unnecessary_to_owned.stderr b/src/tools/clippy/tests/ui/unnecessary_to_owned.stderr index 2829f3cd6e9..511b4ae119f 100644 --- a/src/tools/clippy/tests/ui/unnecessary_to_owned.stderr +++ b/src/tools/clippy/tests/ui/unnecessary_to_owned.stderr @@ -477,8 +477,44 @@ error: unnecessary use of `to_owned` LL | let _ = IntoIterator::into_iter([std::path::PathBuf::new()][..].to_owned()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `[std::path::PathBuf::new()][..].iter().cloned()` +error: allocating a new `String` only to create a temporary `&str` from it + --> tests/ui/unnecessary_to_owned.rs:162:26 + | +LL | let _ref_str: &str = &String::from_utf8(slice.to_vec()).expect("not UTF-8"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: convert from `&[u8]` to `&str` directly + | +LL - let _ref_str: &str = &String::from_utf8(slice.to_vec()).expect("not UTF-8"); +LL + let _ref_str: &str = core::str::from_utf8(&slice).expect("not UTF-8"); + | + +error: allocating a new `String` only to create a temporary `&str` from it + --> tests/ui/unnecessary_to_owned.rs:163:26 + | +LL | let _ref_str: &str = &String::from_utf8(b"foo".to_vec()).unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: convert from `&[u8]` to `&str` directly + | +LL - let _ref_str: &str = &String::from_utf8(b"foo".to_vec()).unwrap(); +LL + let _ref_str: &str = core::str::from_utf8(b"foo").unwrap(); + | + +error: allocating a new `String` only to create a temporary `&str` from it + --> tests/ui/unnecessary_to_owned.rs:164:26 + | +LL | let _ref_str: &str = &String::from_utf8(b"foo".as_slice().to_owned()).unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: convert from `&[u8]` to `&str` directly + | +LL - let _ref_str: &str = &String::from_utf8(b"foo".as_slice().to_owned()).unwrap(); +LL + let _ref_str: &str = core::str::from_utf8(b"foo".as_slice()).unwrap(); + | + error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:202:14 + --> tests/ui/unnecessary_to_owned.rs:221:14 | LL | for t in file_types.to_vec() { | ^^^^^^^^^^^^^^^^^^^ @@ -494,64 +530,64 @@ LL + let path = match get_file_path(t) { | error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:225:14 + --> tests/ui/unnecessary_to_owned.rs:244:14 | LL | let _ = &["x"][..].to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `["x"][..].iter().cloned()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:230:14 + --> tests/ui/unnecessary_to_owned.rs:249:14 | LL | let _ = &["x"][..].to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `["x"][..].iter().copied()` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:278:24 + --> tests/ui/unnecessary_to_owned.rs:297:24 | LL | Box::new(build(y.to_string())) | ^^^^^^^^^^^^^ help: use: `y` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:387:12 + --> tests/ui/unnecessary_to_owned.rs:406:12 | LL | id("abc".to_string()) | ^^^^^^^^^^^^^^^^^ help: use: `"abc"` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:530:37 + --> tests/ui/unnecessary_to_owned.rs:549:37 | LL | IntoFuture::into_future(foo([].to_vec(), &0)); | ^^^^^^^^^^^ help: use: `[]` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:540:18 + --> tests/ui/unnecessary_to_owned.rs:559:18 | LL | s.remove(&a.to_vec()); | ^^^^^^^^^^^ help: replace it with: `a` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:544:14 + --> tests/ui/unnecessary_to_owned.rs:563:14 | LL | s.remove(&"b".to_owned()); | ^^^^^^^^^^^^^^^ help: replace it with: `"b"` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:545:14 + --> tests/ui/unnecessary_to_owned.rs:564:14 | LL | s.remove(&"b".to_string()); | ^^^^^^^^^^^^^^^^ help: replace it with: `"b"` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:550:14 + --> tests/ui/unnecessary_to_owned.rs:569:14 | LL | s.remove(&["b"].to_vec()); | ^^^^^^^^^^^^^^^ help: replace it with: `["b"].as_slice()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:551:14 + --> tests/ui/unnecessary_to_owned.rs:570:14 | LL | s.remove(&(&["b"]).to_vec()); | ^^^^^^^^^^^^^^^^^^ help: replace it with: `(&["b"]).as_slice()` -error: aborting due to 85 previous errors +error: aborting due to 88 previous errors diff --git a/src/tools/clippy/tests/ui/wildcard_imports.fixed b/src/tools/clippy/tests/ui/wildcard_imports.fixed index 6fdd728b9b7..46890ee9213 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports.fixed +++ b/src/tools/clippy/tests/ui/wildcard_imports.fixed @@ -204,6 +204,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass { use super::*; @@ -212,6 +213,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_inside_function { fn with_super_inside_function() { use super::*; @@ -219,6 +221,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_further_inside { fn insidefoo() {} mod inner { diff --git a/src/tools/clippy/tests/ui/wildcard_imports.rs b/src/tools/clippy/tests/ui/wildcard_imports.rs index 20e06d4b366..1a5586cbb88 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports.rs +++ b/src/tools/clippy/tests/ui/wildcard_imports.rs @@ -205,6 +205,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass { use super::*; @@ -213,6 +214,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_inside_function { fn with_super_inside_function() { use super::*; @@ -220,6 +222,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_further_inside { fn insidefoo() {} mod inner { diff --git a/src/tools/clippy/tests/ui/wildcard_imports.stderr b/src/tools/clippy/tests/ui/wildcard_imports.stderr index 0c69d5262c2..8e88f216394 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports.stderr +++ b/src/tools/clippy/tests/ui/wildcard_imports.stderr @@ -106,31 +106,31 @@ LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports.rs:236:17 + --> tests/ui/wildcard_imports.rs:239:17 | LL | use super::*; | ^^^^^^^^ help: try: `super::insidefoo` error: usage of wildcard import - --> tests/ui/wildcard_imports.rs:244:13 + --> tests/ui/wildcard_imports.rs:247:13 | LL | use crate::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `crate::super_imports::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports.rs:253:17 + --> tests/ui/wildcard_imports.rs:256:17 | LL | use super::super::*; | ^^^^^^^^^^^^^^^ help: try: `super::super::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports.rs:262:13 + --> tests/ui/wildcard_imports.rs:265:13 | LL | use super::super::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `super::super::super_imports::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports.rs:270:13 + --> tests/ui/wildcard_imports.rs:273:13 | LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` diff --git a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.fixed b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.fixed index 6a9fe007d65..197dd3b94df 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.fixed +++ b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.fixed @@ -198,6 +198,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass { use super::*; @@ -206,6 +207,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_inside_function { fn with_super_inside_function() { use super::*; @@ -213,6 +215,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_further_inside { fn insidefoo() {} mod inner { diff --git a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.stderr b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.stderr index 11e0bd37769..66adacd95dc 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.stderr +++ b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2018.stderr @@ -106,31 +106,31 @@ LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:230:17 + --> tests/ui/wildcard_imports_2021.rs:233:17 | LL | use super::*; | ^^^^^^^^ help: try: `super::insidefoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:238:13 + --> tests/ui/wildcard_imports_2021.rs:241:13 | LL | use crate::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `crate::super_imports::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:247:17 + --> tests/ui/wildcard_imports_2021.rs:250:17 | LL | use super::super::*; | ^^^^^^^^^^^^^^^ help: try: `super::super::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:256:13 + --> tests/ui/wildcard_imports_2021.rs:259:13 | LL | use super::super::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `super::super::super_imports::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:264:13 + --> tests/ui/wildcard_imports_2021.rs:267:13 | LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` diff --git a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.fixed b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.fixed index 6a9fe007d65..197dd3b94df 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.fixed +++ b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.fixed @@ -198,6 +198,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass { use super::*; @@ -206,6 +207,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_inside_function { fn with_super_inside_function() { use super::*; @@ -213,6 +215,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_further_inside { fn insidefoo() {} mod inner { diff --git a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.stderr b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.stderr index 11e0bd37769..66adacd95dc 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.stderr +++ b/src/tools/clippy/tests/ui/wildcard_imports_2021.edition2021.stderr @@ -106,31 +106,31 @@ LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:230:17 + --> tests/ui/wildcard_imports_2021.rs:233:17 | LL | use super::*; | ^^^^^^^^ help: try: `super::insidefoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:238:13 + --> tests/ui/wildcard_imports_2021.rs:241:13 | LL | use crate::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `crate::super_imports::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:247:17 + --> tests/ui/wildcard_imports_2021.rs:250:17 | LL | use super::super::*; | ^^^^^^^^^^^^^^^ help: try: `super::super::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:256:13 + --> tests/ui/wildcard_imports_2021.rs:259:13 | LL | use super::super::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `super::super::super_imports::foofoo` error: usage of wildcard import - --> tests/ui/wildcard_imports_2021.rs:264:13 + --> tests/ui/wildcard_imports_2021.rs:267:13 | LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` diff --git a/src/tools/clippy/tests/ui/wildcard_imports_2021.rs b/src/tools/clippy/tests/ui/wildcard_imports_2021.rs index 18ebc0f5127..606ff080e77 100644 --- a/src/tools/clippy/tests/ui/wildcard_imports_2021.rs +++ b/src/tools/clippy/tests/ui/wildcard_imports_2021.rs @@ -199,6 +199,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass { use super::*; @@ -207,6 +208,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_inside_function { fn with_super_inside_function() { use super::*; @@ -214,6 +216,7 @@ mod super_imports { } } + #[cfg(test)] mod test_should_pass_further_inside { fn insidefoo() {} mod inner { |