diff options
Diffstat (limited to 'src/tools/clippy')
162 files changed, 4116 insertions, 682 deletions
diff --git a/src/tools/clippy/CHANGELOG.md b/src/tools/clippy/CHANGELOG.md index 3a98217f625..0cfe89ad378 100644 --- a/src/tools/clippy/CHANGELOG.md +++ b/src/tools/clippy/CHANGELOG.md @@ -5685,6 +5685,7 @@ Released 2018-09-13 [`cmp_nan`]: https://rust-lang.github.io/rust-clippy/master/index.html#cmp_nan [`cmp_null`]: https://rust-lang.github.io/rust-clippy/master/index.html#cmp_null [`cmp_owned`]: https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned +[`coerce_container_to_any`]: https://rust-lang.github.io/rust-clippy/master/index.html#coerce_container_to_any [`cognitive_complexity`]: https://rust-lang.github.io/rust-clippy/master/index.html#cognitive_complexity [`collapsible_else_if`]: https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_else_if [`collapsible_if`]: https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if @@ -5736,6 +5737,7 @@ Released 2018-09-13 [`doc_markdown`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_markdown [`doc_nested_refdefs`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_nested_refdefs [`doc_overindented_list_items`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_overindented_list_items +[`doc_suspicious_footnotes`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_suspicious_footnotes [`double_comparisons`]: https://rust-lang.github.io/rust-clippy/master/index.html#double_comparisons [`double_ended_iterator_last`]: https://rust-lang.github.io/rust-clippy/master/index.html#double_ended_iterator_last [`double_must_use`]: https://rust-lang.github.io/rust-clippy/master/index.html#double_must_use @@ -5862,6 +5864,7 @@ Released 2018-09-13 [`ineffective_open_options`]: https://rust-lang.github.io/rust-clippy/master/index.html#ineffective_open_options [`inefficient_to_string`]: https://rust-lang.github.io/rust-clippy/master/index.html#inefficient_to_string [`infallible_destructuring_match`]: https://rust-lang.github.io/rust-clippy/master/index.html#infallible_destructuring_match +[`infallible_try_from`]: https://rust-lang.github.io/rust-clippy/master/index.html#infallible_try_from [`infinite_iter`]: https://rust-lang.github.io/rust-clippy/master/index.html#infinite_iter [`infinite_loop`]: https://rust-lang.github.io/rust-clippy/master/index.html#infinite_loop [`inherent_to_string`]: https://rust-lang.github.io/rust-clippy/master/index.html#inherent_to_string @@ -5888,6 +5891,7 @@ Released 2018-09-13 [`inverted_saturating_sub`]: https://rust-lang.github.io/rust-clippy/master/index.html#inverted_saturating_sub [`invisible_characters`]: https://rust-lang.github.io/rust-clippy/master/index.html#invisible_characters [`io_other_error`]: https://rust-lang.github.io/rust-clippy/master/index.html#io_other_error +[`ip_constant`]: https://rust-lang.github.io/rust-clippy/master/index.html#ip_constant [`is_digit_ascii_radix`]: https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix [`items_after_statements`]: https://rust-lang.github.io/rust-clippy/master/index.html#items_after_statements [`items_after_test_module`]: https://rust-lang.github.io/rust-clippy/master/index.html#items_after_test_module @@ -6163,6 +6167,7 @@ Released 2018-09-13 [`pathbuf_init_then_push`]: https://rust-lang.github.io/rust-clippy/master/index.html#pathbuf_init_then_push [`pattern_type_mismatch`]: https://rust-lang.github.io/rust-clippy/master/index.html#pattern_type_mismatch [`permissions_set_readonly_false`]: https://rust-lang.github.io/rust-clippy/master/index.html#permissions_set_readonly_false +[`pointer_format`]: https://rust-lang.github.io/rust-clippy/master/index.html#pointer_format [`pointers_in_nomem_asm_block`]: https://rust-lang.github.io/rust-clippy/master/index.html#pointers_in_nomem_asm_block [`positional_named_format_parameters`]: https://rust-lang.github.io/rust-clippy/master/index.html#positional_named_format_parameters [`possible_missing_comma`]: https://rust-lang.github.io/rust-clippy/master/index.html#possible_missing_comma diff --git a/src/tools/clippy/clippy_dev/src/update_lints.rs b/src/tools/clippy/clippy_dev/src/update_lints.rs index 320462a2c96..08592f2521f 100644 --- a/src/tools/clippy/clippy_dev/src/update_lints.rs +++ b/src/tools/clippy/clippy_dev/src/update_lints.rs @@ -73,8 +73,8 @@ pub fn generate_lint_files( ( "clippy_lints/src/lib.rs", &mut update_text_region_fn( - "// begin lints modules, do not remove this comment, it’s used in `update_lints`\n", - "// end lints modules, do not remove this comment, it’s used in `update_lints`", + "// begin lints modules, do not remove this comment, it's used in `update_lints`\n", + "// end lints modules, do not remove this comment, it's used in `update_lints`", |dst| { for lint_mod in lints.iter().map(|l| &l.module).sorted().dedup() { writeln!(dst, "mod {lint_mod};").unwrap(); diff --git a/src/tools/clippy/clippy_lints/src/arbitrary_source_item_ordering.rs b/src/tools/clippy/clippy_lints/src/arbitrary_source_item_ordering.rs index 59a0c7c8868..b9ae9afe851 100644 --- a/src/tools/clippy/clippy_lints/src/arbitrary_source_item_ordering.rs +++ b/src/tools/clippy/clippy_lints/src/arbitrary_source_item_ordering.rs @@ -204,7 +204,7 @@ impl ArbitrarySourceItemOrdering { self.assoc_types_order ), Some(before_item.span), - format!("should be placed before `{}`", before_item.ident.as_str(),), + format!("should be placed before `{}`", before_item.ident.name), ); } @@ -216,7 +216,7 @@ impl ArbitrarySourceItemOrdering { ident.span, "incorrect ordering of items (must be alphabetically ordered)", Some(before_ident.span), - format!("should be placed before `{}`", before_ident.as_str(),), + format!("should be placed before `{}`", before_ident.name), ); } @@ -228,7 +228,7 @@ impl ArbitrarySourceItemOrdering { }; let (before_span, note) = if let Some(ident) = before_item.kind.ident() { - (ident.span, format!("should be placed before `{}`", ident.as_str(),)) + (ident.span, format!("should be placed before `{}`", ident.name)) } else { ( before_item.span, @@ -255,7 +255,7 @@ impl ArbitrarySourceItemOrdering { self.assoc_types_order ), Some(before_item.span), - format!("should be placed before `{}`", before_item.ident.as_str(),), + format!("should be placed before `{}`", before_item.ident.name), ); } } diff --git a/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs b/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs index 0edb50be8c7..d67a194b020 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/deprecated_cfg_attr.rs @@ -61,7 +61,7 @@ pub(super) fn check_clippy(cx: &EarlyContext<'_>, attr: &Attribute) { fn check_deprecated_cfg_recursively(cx: &EarlyContext<'_>, attr: &rustc_ast::MetaItem) { if let Some(ident) = attr.ident() { - if ["any", "all", "not"].contains(&ident.name.as_str()) { + if matches!(ident.name, sym::any | sym::all | sym::not) { let Some(list) = attr.meta_item_list() else { return }; for item in list.iter().filter_map(|item| item.meta_item()) { check_deprecated_cfg_recursively(cx, item); diff --git a/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs b/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs index a851daaede7..c2406bcfb64 100644 --- a/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs +++ b/src/tools/clippy/clippy_lints/src/attrs/duplicated_attributes.rs @@ -1,9 +1,10 @@ use super::DUPLICATED_ATTRIBUTES; use clippy_utils::diagnostics::span_lint_and_then; +use itertools::Itertools; use rustc_ast::{Attribute, MetaItem}; use rustc_data_structures::fx::FxHashMap; use rustc_lint::EarlyContext; -use rustc_span::{Span, sym}; +use rustc_span::{Span, Symbol, sym}; use std::collections::hash_map::Entry; fn emit_if_duplicated( @@ -29,7 +30,7 @@ fn check_duplicated_attr( cx: &EarlyContext<'_>, attr: &MetaItem, attr_paths: &mut FxHashMap<String, Span>, - parent: &mut Vec<String>, + parent: &mut Vec<Symbol>, ) { if attr.span.from_expansion() { return; @@ -43,7 +44,7 @@ fn check_duplicated_attr( return; } if let Some(direct_parent) = parent.last() - && direct_parent == sym::cfg_trace.as_str() + && *direct_parent == sym::cfg_trace && [sym::all, sym::not, sym::any].contains(&name) { // FIXME: We don't correctly check `cfg`s for now, so if it's more complex than just a one @@ -51,9 +52,14 @@ fn check_duplicated_attr( return; } if let Some(value) = attr.value_str() { - emit_if_duplicated(cx, attr, attr_paths, format!("{}:{name}={value}", parent.join(":"))); + emit_if_duplicated( + cx, + attr, + attr_paths, + format!("{}:{name}={value}", parent.iter().join(":")), + ); } else if let Some(sub_attrs) = attr.meta_item_list() { - parent.push(name.as_str().to_string()); + parent.push(name); for sub_attr in sub_attrs { if let Some(meta) = sub_attr.meta_item() { check_duplicated_attr(cx, meta, attr_paths, parent); @@ -61,7 +67,7 @@ fn check_duplicated_attr( } parent.pop(); } else { - emit_if_duplicated(cx, attr, attr_paths, format!("{}:{name}", parent.join(":"))); + emit_if_duplicated(cx, attr, attr_paths, format!("{}:{name}", parent.iter().join(":"))); } } diff --git a/src/tools/clippy/clippy_lints/src/booleans.rs b/src/tools/clippy/clippy_lints/src/booleans.rs index 7c6fd91ca67..bf43234ff50 100644 --- a/src/tools/clippy/clippy_lints/src/booleans.rs +++ b/src/tools/clippy/clippy_lints/src/booleans.rs @@ -1,10 +1,10 @@ use clippy_config::Conf; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_hir_and_then}; -use clippy_utils::eq_expr_value; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::sugg::Sugg; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; +use clippy_utils::{eq_expr_value, sym}; use rustc_ast::ast::LitKind; use rustc_attr_data_structures::RustcVersion; use rustc_errors::Applicability; @@ -13,7 +13,7 @@ use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, UnOp}; use rustc_lint::{LateContext, LateLintPass, Level}; use rustc_session::impl_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{Span, SyntaxContext, sym}; +use rustc_span::{Span, Symbol, SyntaxContext}; declare_clippy_lint! { /// ### What it does @@ -73,10 +73,10 @@ declare_clippy_lint! { } // For each pairs, both orders are considered. -const METHODS_WITH_NEGATION: [(Option<RustcVersion>, &str, &str); 3] = [ - (None, "is_some", "is_none"), - (None, "is_err", "is_ok"), - (Some(msrvs::IS_NONE_OR), "is_some_and", "is_none_or"), +const METHODS_WITH_NEGATION: [(Option<RustcVersion>, Symbol, Symbol); 3] = [ + (None, sym::is_some, sym::is_none), + (None, sym::is_err, sym::is_ok), + (Some(msrvs::IS_NONE_OR), sym::is_some_and, sym::is_none_or), ]; pub struct NonminimalBool { @@ -440,9 +440,7 @@ fn simplify_not(cx: &LateContext<'_>, curr_msrv: Msrv, expr: &Expr<'_>) -> Optio .iter() .copied() .flat_map(|(msrv, a, b)| vec![(msrv, a, b), (msrv, b, a)]) - .find(|&(msrv, a, _)| { - a == path.ident.name.as_str() && msrv.is_none_or(|msrv| curr_msrv.meets(cx, msrv)) - }) + .find(|&(msrv, a, _)| a == path.ident.name && msrv.is_none_or(|msrv| curr_msrv.meets(cx, msrv))) .and_then(|(_, _, neg_method)| { let negated_args = args .iter() diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs b/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs index 0f066fae118..c1d6cec1b62 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_lossless.rs @@ -76,19 +76,20 @@ fn should_lint(cx: &LateContext<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>, msrv: M return false; } - match (cast_from.is_integral(), cast_to.is_integral()) { - (true, true) => { + match ( + utils::int_ty_to_nbits(cx.tcx, cast_from), + utils::int_ty_to_nbits(cx.tcx, cast_to), + ) { + (Some(from_nbits), Some(to_nbits)) => { let cast_signed_to_unsigned = cast_from.is_signed() && !cast_to.is_signed(); - let from_nbits = utils::int_ty_to_nbits(cast_from, cx.tcx); - let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); !is_isize_or_usize(cast_from) && !is_isize_or_usize(cast_to) && from_nbits < to_nbits && !cast_signed_to_unsigned }, - (true, false) => { - let from_nbits = utils::int_ty_to_nbits(cast_from, cx.tcx); + (Some(from_nbits), None) => { + // FIXME: handle `f16` and `f128` let to_nbits = if let ty::Float(FloatTy::F32) = cast_to.kind() { 32 } else { @@ -96,9 +97,7 @@ fn should_lint(cx: &LateContext<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>, msrv: M }; !is_isize_or_usize(cast_from) && from_nbits < to_nbits }, - (false, true) if matches!(cast_from.kind(), ty::Bool) && msrv.meets(cx, msrvs::FROM_BOOL) => true, - (_, _) => { - matches!(cast_from.kind(), ty::Float(FloatTy::F32)) && matches!(cast_to.kind(), ty::Float(FloatTy::F64)) - }, + (None, Some(_)) if cast_from.is_bool() && msrv.meets(cx, msrvs::FROM_BOOL) => true, + _ => matches!(cast_from.kind(), ty::Float(FloatTy::F32)) && matches!(cast_to.kind(), ty::Float(FloatTy::F64)), } } diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs b/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs index 4120e5c8cb7..a2ecb5fb44a 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_possible_truncation.rs @@ -91,15 +91,14 @@ pub(super) fn check( cast_to: Ty<'_>, cast_to_span: Span, ) { - let msg = match (cast_from.kind(), cast_to.is_integral()) { - (ty::Int(_) | ty::Uint(_), true) => { + let msg = match (cast_from.kind(), utils::int_ty_to_nbits(cx.tcx, cast_to)) { + (ty::Int(_) | ty::Uint(_), Some(to_nbits)) => { let from_nbits = apply_reductions( cx, - utils::int_ty_to_nbits(cast_from, cx.tcx), + utils::int_ty_to_nbits(cx.tcx, cast_from).unwrap(), cast_expr, cast_from.is_signed(), ); - let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); let (should_lint, suffix) = match (is_isize_or_usize(cast_from), is_isize_or_usize(cast_to)) { (true, true) | (false, false) => (to_nbits < from_nbits, ""), @@ -121,7 +120,7 @@ pub(super) fn check( format!("casting `{cast_from}` to `{cast_to}` may truncate the value{suffix}",) }, - (ty::Adt(def, _), true) if def.is_enum() => { + (ty::Adt(def, _), Some(to_nbits)) if def.is_enum() => { let (from_nbits, variant) = if let ExprKind::Path(p) = &cast_expr.kind && let Res::Def(DefKind::Ctor(..), id) = cx.qpath_res(p, cast_expr.hir_id) { @@ -132,7 +131,6 @@ pub(super) fn check( } else { (utils::enum_ty_to_nbits(*def, cx.tcx), None) }; - let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); let cast_from_ptr_size = def.repr().int.is_none_or(|ty| matches!(ty, IntegerType::Pointer(_),)); let suffix = match (cast_from_ptr_size, is_isize_or_usize(cast_to)) { @@ -157,11 +155,11 @@ pub(super) fn check( format!("casting `{cast_from}` to `{cast_to}` may truncate the value{suffix}") }, - (ty::Float(_), true) => { + (ty::Float(_), Some(_)) => { format!("casting `{cast_from}` to `{cast_to}` may truncate the value") }, - (ty::Float(FloatTy::F64), false) if matches!(cast_to.kind(), &ty::Float(FloatTy::F32)) => { + (ty::Float(FloatTy::F64), None) if matches!(cast_to.kind(), &ty::Float(FloatTy::F32)) => { "casting `f64` to `f32` may truncate the value".to_string() }, diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs b/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs index 504d0a267e4..e26c03ccda9 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_possible_wrap.rs @@ -17,9 +17,12 @@ enum EmitState { } pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { - if !(cast_from.is_integral() && cast_to.is_integral()) { + let (Some(from_nbits), Some(to_nbits)) = ( + utils::int_ty_to_nbits(cx.tcx, cast_from), + utils::int_ty_to_nbits(cx.tcx, cast_to), + ) else { return; - } + }; // emit a lint if a cast is: // 1. unsigned to signed @@ -35,9 +38,6 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_from: Ty<'_>, ca return; } - let from_nbits = utils::int_ty_to_nbits(cast_from, cx.tcx); - let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); - let should_lint = match (cast_from.is_ptr_sized_integral(), cast_to.is_ptr_sized_integral()) { (true, true) => { // casts between two ptr sized integers are trivially always the same size diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs b/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs index 1eb115ce6bd..712e38db499 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_precision_loss.rs @@ -7,15 +7,14 @@ use rustc_middle::ty::{self, FloatTy, Ty}; use super::{CAST_PRECISION_LOSS, utils}; pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { - if !cast_from.is_integral() || cast_to.is_integral() { + let Some(from_nbits) = utils::int_ty_to_nbits(cx.tcx, cast_from) else { return; - } + }; - let from_nbits = utils::int_ty_to_nbits(cast_from, cx.tcx); - let to_nbits = if cast_to.kind() == &ty::Float(FloatTy::F32) { - 32 - } else { - 64 + // FIXME: handle `f16` and `f128` + let to_nbits = match cast_to.kind() { + ty::Float(f @ (FloatTy::F32 | FloatTy::F64)) => f.bit_width(), + _ => return, }; if !(is_isize_or_usize(cast_from) || from_nbits >= to_nbits) { @@ -29,9 +28,10 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_from: Ty<'_>, ca let from_nbits_str = if arch_dependent { "64".to_owned() } else if is_isize_or_usize(cast_from) { + // FIXME: handle 16 bits `usize` type "32 or 64".to_owned() } else { - utils::int_ty_to_nbits(cast_from, cx.tcx).to_string() + from_nbits.to_string() }; span_lint( diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs b/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs index 01020f3eee2..e4dafde0f9d 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs @@ -61,7 +61,7 @@ fn is_used_as_unaligned(cx: &LateContext<'_>, e: &Expr<'_>) -> bool { }; match parent.kind { ExprKind::MethodCall(name, self_arg, ..) if self_arg.hir_id == e.hir_id => { - if matches!(name.ident.as_str(), "read_unaligned" | "write_unaligned") + if matches!(name.ident.name, sym::read_unaligned | sym::write_unaligned) && let Some(def_id) = cx.typeck_results().type_dependent_def_id(parent.hir_id) && let Some(def_id) = cx.tcx.impl_of_method(def_id) && cx.tcx.type_of(def_id).instantiate_identity().is_raw_ptr() diff --git a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs index ac1a355c8d9..105477093b5 100644 --- a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs +++ b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast.rs @@ -3,24 +3,22 @@ use clippy_utils::source::snippet_with_applicability; use rustc_errors::Applicability; use rustc_hir::Expr; use rustc_lint::LateContext; -use rustc_middle::ty::{self, Ty, UintTy}; +use rustc_middle::ty::{self, Ty}; use super::{FN_TO_NUMERIC_CAST, utils}; pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { // We only want to check casts to `ty::Uint` or `ty::Int` - match cast_to.kind() { - ty::Uint(_) | ty::Int(..) => { /* continue on */ }, - _ => return, - } + let Some(to_nbits) = utils::int_ty_to_nbits(cx.tcx, cast_to) else { + return; + }; match cast_from.kind() { ty::FnDef(..) | ty::FnPtr(..) => { let mut applicability = Applicability::MaybeIncorrect; - let from_snippet = snippet_with_applicability(cx, cast_expr.span, "x", &mut applicability); - let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); - if (to_nbits >= cx.tcx.data_layout.pointer_size.bits()) && (*cast_to.kind() != ty::Uint(UintTy::Usize)) { + if to_nbits >= cx.tcx.data_layout.pointer_size.bits() && !cast_to.is_usize() { + let from_snippet = snippet_with_applicability(cx, cast_expr.span, "x", &mut applicability); span_lint_and_sugg( cx, FN_TO_NUMERIC_CAST, diff --git a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs index 18e7798452e..700b7d0d426 100644 --- a/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs +++ b/src/tools/clippy/clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs @@ -9,16 +9,14 @@ use super::{FN_TO_NUMERIC_CAST_WITH_TRUNCATION, utils}; pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>, cast_from: Ty<'_>, cast_to: Ty<'_>) { // We only want to check casts to `ty::Uint` or `ty::Int` - match cast_to.kind() { - ty::Uint(_) | ty::Int(..) => { /* continue on */ }, - _ => return, - } + let Some(to_nbits) = utils::int_ty_to_nbits(cx.tcx, cast_to) else { + return; + }; match cast_from.kind() { ty::FnDef(..) | ty::FnPtr(..) => { let mut applicability = Applicability::MaybeIncorrect; let from_snippet = snippet_with_applicability(cx, cast_expr.span, "x", &mut applicability); - let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); if to_nbits < cx.tcx.data_layout.pointer_size.bits() { span_lint_and_sugg( cx, diff --git a/src/tools/clippy/clippy_lints/src/casts/utils.rs b/src/tools/clippy/clippy_lints/src/casts/utils.rs index 5ccba92a0af..318a1646477 100644 --- a/src/tools/clippy/clippy_lints/src/casts/utils.rs +++ b/src/tools/clippy/clippy_lints/src/casts/utils.rs @@ -1,27 +1,14 @@ use clippy_utils::ty::{EnumValue, read_explicit_enum_value}; use rustc_middle::ty::{self, AdtDef, IntTy, Ty, TyCtxt, UintTy, VariantDiscr}; -/// Returns the size in bits of an integral type. -/// Will return 0 if the type is not an int or uint variant -pub(super) fn int_ty_to_nbits(typ: Ty<'_>, tcx: TyCtxt<'_>) -> u64 { - match typ.kind() { - ty::Int(i) => match i { - IntTy::Isize => tcx.data_layout.pointer_size.bits(), - IntTy::I8 => 8, - IntTy::I16 => 16, - IntTy::I32 => 32, - IntTy::I64 => 64, - IntTy::I128 => 128, - }, - ty::Uint(i) => match i { - UintTy::Usize => tcx.data_layout.pointer_size.bits(), - UintTy::U8 => 8, - UintTy::U16 => 16, - UintTy::U32 => 32, - UintTy::U64 => 64, - UintTy::U128 => 128, - }, - _ => 0, +/// Returns the size in bits of an integral type, or `None` if `ty` is not an +/// integral type. +pub(super) fn int_ty_to_nbits(tcx: TyCtxt<'_>, ty: Ty<'_>) -> Option<u64> { + match ty.kind() { + ty::Int(IntTy::Isize) | ty::Uint(UintTy::Usize) => Some(tcx.data_layout.pointer_size.bits()), + ty::Int(i) => i.bit_width(), + ty::Uint(i) => i.bit_width(), + _ => None, } } diff --git a/src/tools/clippy/clippy_lints/src/checked_conversions.rs b/src/tools/clippy/clippy_lints/src/checked_conversions.rs index 8ada608049c..9b3822f9d8f 100644 --- a/src/tools/clippy/clippy_lints/src/checked_conversions.rs +++ b/src/tools/clippy/clippy_lints/src/checked_conversions.rs @@ -2,11 +2,12 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; -use clippy_utils::{SpanlessEq, is_in_const_context, is_integer_literal}; +use clippy_utils::{SpanlessEq, is_in_const_context, is_integer_literal, sym}; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, QPath, TyKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; +use rustc_span::Symbol; declare_clippy_lint! { /// ### What it does @@ -98,7 +99,7 @@ impl LateLintPass<'_> for CheckedConversions { struct Conversion<'a> { cvt: ConversionType, expr_to_cast: &'a Expr<'a>, - to_type: Option<&'a str>, + to_type: Option<Symbol>, } /// The kind of conversion that is checked @@ -150,7 +151,7 @@ impl<'a> Conversion<'a> { } /// Try to construct a new conversion if the conversion type is valid - fn try_new(expr_to_cast: &'a Expr<'_>, from_type: &str, to_type: &'a str) -> Option<Conversion<'a>> { + fn try_new(expr_to_cast: &'a Expr<'_>, from_type: Symbol, to_type: Symbol) -> Option<Conversion<'a>> { ConversionType::try_new(from_type, to_type).map(|cvt| Conversion { cvt, expr_to_cast, @@ -171,7 +172,7 @@ impl<'a> Conversion<'a> { impl ConversionType { /// Creates a conversion type if the type is allowed & conversion is valid #[must_use] - fn try_new(from: &str, to: &str) -> Option<Self> { + fn try_new(from: Symbol, to: Symbol) -> Option<Self> { if UINTS.contains(&from) { Some(Self::FromUnsigned) } else if SINTS.contains(&from) { @@ -190,7 +191,7 @@ impl ConversionType { /// Check for `expr <= (to_type::MAX as from_type)` fn check_upper_bound<'tcx>(lt: &'tcx Expr<'tcx>, gt: &'tcx Expr<'tcx>) -> Option<Conversion<'tcx>> { - if let Some((from, to)) = get_types_from_cast(gt, INTS, "max_value", "MAX") { + if let Some((from, to)) = get_types_from_cast(gt, INTS, sym::max_value, sym::MAX) { Conversion::try_new(lt, from, to) } else { None @@ -209,7 +210,7 @@ fn check_lower_bound_zero<'a>(candidate: &'a Expr<'_>, check: &'a Expr<'_>) -> O /// Check for `expr >= (to_type::MIN as from_type)` fn check_lower_bound_min<'a>(candidate: &'a Expr<'_>, check: &'a Expr<'_>) -> Option<Conversion<'a>> { - if let Some((from, to)) = get_types_from_cast(check, SINTS, "min_value", "MIN") { + if let Some((from, to)) = get_types_from_cast(check, SINTS, sym::min_value, sym::MIN) { Conversion::try_new(candidate, from, to) } else { None @@ -217,15 +218,15 @@ fn check_lower_bound_min<'a>(candidate: &'a Expr<'_>, check: &'a Expr<'_>) -> Op } /// Tries to extract the from- and to-type from a cast expression -fn get_types_from_cast<'a>( - expr: &'a Expr<'_>, - types: &'a [&str], - func: &'a str, - assoc_const: &'a str, -) -> Option<(&'a str, &'a str)> { +fn get_types_from_cast( + expr: &Expr<'_>, + types: &[Symbol], + func: Symbol, + assoc_const: Symbol, +) -> Option<(Symbol, Symbol)> { // `to_type::max_value() as from_type` // or `to_type::MAX as from_type` - let call_from_cast: Option<(&Expr<'_>, &str)> = if let ExprKind::Cast(limit, from_type) = &expr.kind + let call_from_cast: Option<(&Expr<'_>, Symbol)> = if let ExprKind::Cast(limit, from_type) = &expr.kind // to_type::max_value(), from_type && let TyKind::Path(from_type_path) = &from_type.kind && let Some(from_sym) = int_ty_to_sym(from_type_path) @@ -236,12 +237,12 @@ fn get_types_from_cast<'a>( }; // `from_type::from(to_type::max_value())` - let limit_from: Option<(&Expr<'_>, &str)> = call_from_cast.or_else(|| { + let limit_from: Option<(&Expr<'_>, Symbol)> = call_from_cast.or_else(|| { if let ExprKind::Call(from_func, [limit]) = &expr.kind // `from_type::from, to_type::max_value()` // `from_type::from` && let ExprKind::Path(path) = &from_func.kind - && let Some(from_sym) = get_implementing_type(path, INTS, "from") + && let Some(from_sym) = get_implementing_type(path, INTS, sym::from) { Some((limit, from_sym)) } else { @@ -273,32 +274,41 @@ fn get_types_from_cast<'a>( } /// Gets the type which implements the called function -fn get_implementing_type<'a>(path: &QPath<'_>, candidates: &'a [&str], function: &str) -> Option<&'a str> { +fn get_implementing_type(path: &QPath<'_>, candidates: &[Symbol], function: Symbol) -> Option<Symbol> { if let QPath::TypeRelative(ty, path) = &path - && path.ident.name.as_str() == function + && path.ident.name == function && let TyKind::Path(QPath::Resolved(None, tp)) = &ty.kind && let [int] = tp.segments { - let name = int.ident.name.as_str(); - candidates.iter().find(|c| &name == *c).copied() + candidates.iter().find(|c| int.ident.name == **c).copied() } else { None } } /// Gets the type as a string, if it is a supported integer -fn int_ty_to_sym<'tcx>(path: &QPath<'_>) -> Option<&'tcx str> { +fn int_ty_to_sym(path: &QPath<'_>) -> Option<Symbol> { if let QPath::Resolved(_, path) = *path && let [ty] = path.segments { - let name = ty.ident.name.as_str(); - INTS.iter().find(|c| &name == *c).copied() + INTS.iter().find(|c| ty.ident.name == **c).copied() } else { None } } // Constants -const UINTS: &[&str] = &["u8", "u16", "u32", "u64", "usize"]; -const SINTS: &[&str] = &["i8", "i16", "i32", "i64", "isize"]; -const INTS: &[&str] = &["u8", "u16", "u32", "u64", "usize", "i8", "i16", "i32", "i64", "isize"]; +const UINTS: &[Symbol] = &[sym::u8, sym::u16, sym::u32, sym::u64, sym::usize]; +const SINTS: &[Symbol] = &[sym::i8, sym::i16, sym::i32, sym::i64, sym::isize]; +const INTS: &[Symbol] = &[ + sym::u8, + sym::u16, + sym::u32, + sym::u64, + sym::usize, + sym::i8, + sym::i16, + sym::i32, + sym::i64, + sym::isize, +]; diff --git a/src/tools/clippy/clippy_lints/src/cloned_ref_to_slice_refs.rs b/src/tools/clippy/clippy_lints/src/cloned_ref_to_slice_refs.rs index 6b239a1541b..e33a8e0fb74 100644 --- a/src/tools/clippy/clippy_lints/src/cloned_ref_to_slice_refs.rs +++ b/src/tools/clippy/clippy_lints/src/cloned_ref_to_slice_refs.rs @@ -17,7 +17,7 @@ declare_clippy_lint! { /// /// ### Why is this bad /// - /// A reference does not need to be owned in order to used as a slice. + /// A reference does not need to be owned in order to be used as a slice. /// /// ### Known problems /// diff --git a/src/tools/clippy/clippy_lints/src/coerce_container_to_any.rs b/src/tools/clippy/clippy_lints/src/coerce_container_to_any.rs new file mode 100644 index 00000000000..2b659253763 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/coerce_container_to_any.rs @@ -0,0 +1,108 @@ +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::snippet; +use clippy_utils::sym; +use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::{self, ExistentialPredicate, Ty, TyCtxt}; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// + /// Protects against unintended coercion of references to container types to `&dyn Any` when the + /// container type dereferences to a `dyn Any` which could be directly referenced instead. + /// + /// ### Why is this bad? + /// + /// The intention is usually to get a reference to the `dyn Any` the value dereferences to, + /// rather than coercing a reference to the container itself to `&dyn Any`. + /// + /// ### Example + /// + /// Because `Box<dyn Any>` itself implements `Any`, `&Box<dyn Any>` + /// can be coerced to an `&dyn Any` which refers to *the `Box` itself*, rather than the + /// inner `dyn Any`. + /// ```no_run + /// # use std::any::Any; + /// let x: Box<dyn Any> = Box::new(0u32); + /// let dyn_any_of_box: &dyn Any = &x; + /// + /// // Fails as we have a &dyn Any to the Box, not the u32 + /// assert_eq!(dyn_any_of_box.downcast_ref::<u32>(), None); + /// ``` + /// Use instead: + /// ```no_run + /// # use std::any::Any; + /// let x: Box<dyn Any> = Box::new(0u32); + /// let dyn_any_of_u32: &dyn Any = &*x; + /// + /// // Succeeds since we have a &dyn Any to the inner u32! + /// assert_eq!(dyn_any_of_u32.downcast_ref::<u32>(), Some(&0u32)); + /// ``` + #[clippy::version = "1.88.0"] + pub COERCE_CONTAINER_TO_ANY, + nursery, + "coercing to `&dyn Any` when dereferencing could produce a `dyn Any` without coercion is usually not intended" +} +declare_lint_pass!(CoerceContainerToAny => [COERCE_CONTAINER_TO_ANY]); + +impl<'tcx> LateLintPass<'tcx> for CoerceContainerToAny { + fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) { + // If this expression has an effective type of `&dyn Any` ... + { + let coerced_ty = cx.typeck_results().expr_ty_adjusted(e); + + let ty::Ref(_, coerced_ref_ty, _) = *coerced_ty.kind() else { + return; + }; + if !is_dyn_any(cx.tcx, coerced_ref_ty) { + return; + } + } + + let expr_ty = cx.typeck_results().expr_ty(e); + let ty::Ref(_, expr_ref_ty, _) = *expr_ty.kind() else { + return; + }; + // ... but only due to coercion ... + if is_dyn_any(cx.tcx, expr_ref_ty) { + return; + } + // ... and it also *derefs* to `dyn Any` ... + let Some((depth, target)) = clippy_utils::ty::deref_chain(cx, expr_ref_ty).enumerate().last() else { + return; + }; + if !is_dyn_any(cx.tcx, target) { + return; + } + + // ... that's probably not intended. + let (span, deref_count) = match e.kind { + // If `e` was already an `&` expression, skip `*&` in the suggestion + ExprKind::AddrOf(_, _, referent) => (referent.span, depth), + _ => (e.span, depth + 1), + }; + span_lint_and_sugg( + cx, + COERCE_CONTAINER_TO_ANY, + e.span, + format!("coercing `{expr_ty}` to `&dyn Any`"), + "consider dereferencing", + format!("&{}{}", str::repeat("*", deref_count), snippet(cx, span, "x")), + Applicability::MaybeIncorrect, + ); + } +} + +fn is_dyn_any(tcx: TyCtxt<'_>, ty: Ty<'_>) -> bool { + let ty::Dynamic(traits, ..) = ty.kind() else { + return false; + }; + traits.iter().any(|binder| { + let ExistentialPredicate::Trait(t) = binder.skip_binder() else { + return false; + }; + tcx.is_diagnostic_item(sym::Any, t.def_id) + }) +} diff --git a/src/tools/clippy/clippy_lints/src/copies.rs b/src/tools/clippy/clippy_lints/src/copies.rs index 2467fc95fd0..5ef726638a5 100644 --- a/src/tools/clippy/clippy_lints/src/copies.rs +++ b/src/tools/clippy/clippy_lints/src/copies.rs @@ -425,7 +425,9 @@ fn scan_block_for_eq<'tcx>( modifies_any_local(cx, stmt, &cond_locals) || !eq_stmts(stmt, blocks, |b| b.stmts.get(i), &mut eq, &mut moved_locals) }) - .map_or(block.stmts.len(), |(i, _)| i); + .map_or(block.stmts.len(), |(i, stmt)| { + adjust_by_closest_callsite(i, stmt, block.stmts[..i].iter().enumerate().rev()) + }); if local_needs_ordered_drop { return BlockEq { @@ -467,7 +469,9 @@ fn scan_block_for_eq<'tcx>( .is_none_or(|s| hash != hash_stmt(cx, s)) }) }) - .map_or(block.stmts.len() - start_end_eq, |(i, _)| i); + .map_or(block.stmts.len() - start_end_eq, |(i, stmt)| { + adjust_by_closest_callsite(i, stmt, (0..i).rev().zip(block.stmts[(block.stmts.len() - i)..].iter())) + }); let moved_locals_at_start = moved_locals.len(); let mut i = end_search_start; @@ -522,6 +526,49 @@ fn scan_block_for_eq<'tcx>( } } +/// Adjusts the index for which the statements begin to differ to the closest macro callsite. This +/// avoids giving suggestions that requires splitting a macro call in half, when only a part of the +/// macro expansion is equal. +/// +/// For example, for the following macro: +/// ```rust,ignore +/// macro_rules! foo { +/// ($x:expr) => { +/// let y = 42; +/// $x; +/// }; +/// } +/// ``` +/// If the macro is called like this: +/// ```rust,ignore +/// if false { +/// let z = 42; +/// foo!(println!("Hello")); +/// } else { +/// let z = 42; +/// foo!(println!("World")); +/// } +/// ``` +/// Although the expanded `let y = 42;` is equal, the macro call should not be included in the +/// suggestion. +fn adjust_by_closest_callsite<'tcx>( + i: usize, + stmt: &'tcx Stmt<'tcx>, + mut iter: impl Iterator<Item = (usize, &'tcx Stmt<'tcx>)>, +) -> usize { + let Some((_, first)) = iter.next() else { + return 0; + }; + + // If it is already at the boundary of a macro call, then just return. + if first.span.source_callsite() != stmt.span.source_callsite() { + return i; + } + + iter.find(|(_, stmt)| stmt.span.source_callsite() != first.span.source_callsite()) + .map_or(0, |(i, _)| i + 1) +} + fn check_for_warn_of_moved_symbol(cx: &LateContext<'_>, symbols: &[(HirId, Symbol)], if_expr: &Expr<'_>) -> bool { get_enclosing_block(cx, if_expr.hir_id).is_some_and(|block| { let ignore_span = block.span.shrink_to_lo().to(if_expr.span); diff --git a/src/tools/clippy/clippy_lints/src/create_dir.rs b/src/tools/clippy/clippy_lints/src/create_dir.rs index b43906903a0..695b25aeb0b 100644 --- a/src/tools/clippy/clippy_lints/src/create_dir.rs +++ b/src/tools/clippy/clippy_lints/src/create_dir.rs @@ -1,7 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::snippet_with_applicability; use rustc_errors::Applicability; -use rustc_hir::{Expr, ExprKind}; +use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::sym; @@ -34,10 +33,12 @@ declare_lint_pass!(CreateDir => [CREATE_DIR]); impl LateLintPass<'_> for CreateDir { fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { - if let ExprKind::Call(func, [arg]) = expr.kind + if let ExprKind::Call(func, [_]) = expr.kind && let ExprKind::Path(ref path) = func.kind && let Some(def_id) = cx.qpath_res(path, func.hir_id).opt_def_id() && cx.tcx.is_diagnostic_item(sym::fs_create_dir, def_id) + && let QPath::Resolved(_, path) = path + && let Some(last) = path.segments.last() { span_lint_and_then( cx, @@ -45,15 +46,15 @@ impl LateLintPass<'_> for CreateDir { expr.span, "calling `std::fs::create_dir` where there may be a better way", |diag| { - let mut app = Applicability::MaybeIncorrect; - diag.span_suggestion_verbose( - expr.span, + let mut suggestions = vec![(last.ident.span.shrink_to_hi(), "_all".to_owned())]; + if path.segments.len() == 1 { + suggestions.push((path.span.shrink_to_lo(), "std::fs::".to_owned())); + } + + diag.multipart_suggestion_verbose( "consider calling `std::fs::create_dir_all` instead", - format!( - "create_dir_all({})", - snippet_with_applicability(cx, arg.span, "..", &mut app) - ), - app, + suggestions, + Applicability::MaybeIncorrect, ); }, ); diff --git a/src/tools/clippy/clippy_lints/src/ctfe.rs b/src/tools/clippy/clippy_lints/src/ctfe.rs deleted file mode 100644 index 7bae04a10f1..00000000000 --- a/src/tools/clippy/clippy_lints/src/ctfe.rs +++ /dev/null @@ -1,26 +0,0 @@ -use rustc_hir::def_id::LocalDefId; -use rustc_hir::intravisit::FnKind; -use rustc_hir::{Body, FnDecl}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::declare_lint_pass; -use rustc_span::Span; - -declare_lint_pass! { - /// Ensures that Constant-time Function Evaluation is being done (specifically, MIR lint passes). - /// As Clippy deactivates codegen, this lint ensures that CTFE (used in hard errors) is still ran. - ClippyCtfe => [] -} - -impl<'tcx> LateLintPass<'tcx> for ClippyCtfe { - fn check_fn( - &mut self, - cx: &LateContext<'_>, - _: FnKind<'tcx>, - _: &'tcx FnDecl<'tcx>, - _: &'tcx Body<'tcx>, - _: Span, - defid: LocalDefId, - ) { - cx.tcx.ensure_ok().mir_drops_elaborated_and_const_checked(defid); // Lint - } -} diff --git a/src/tools/clippy/clippy_lints/src/declared_lints.rs b/src/tools/clippy/clippy_lints/src/declared_lints.rs index 5fcb851dfeb..1e3907d9ede 100644 --- a/src/tools/clippy/clippy_lints/src/declared_lints.rs +++ b/src/tools/clippy/clippy_lints/src/declared_lints.rs @@ -77,6 +77,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::cfg_not_test::CFG_NOT_TEST_INFO, crate::checked_conversions::CHECKED_CONVERSIONS_INFO, crate::cloned_ref_to_slice_refs::CLONED_REF_TO_SLICE_REFS_INFO, + crate::coerce_container_to_any::COERCE_CONTAINER_TO_ANY_INFO, crate::cognitive_complexity::COGNITIVE_COMPLEXITY_INFO, crate::collapsible_if::COLLAPSIBLE_ELSE_IF_INFO, crate::collapsible_if::COLLAPSIBLE_IF_INFO, @@ -119,6 +120,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::doc::DOC_MARKDOWN_INFO, crate::doc::DOC_NESTED_REFDEFS_INFO, crate::doc::DOC_OVERINDENTED_LIST_ITEMS_INFO, + crate::doc::DOC_SUSPICIOUS_FOOTNOTES_INFO, crate::doc::EMPTY_DOCS_INFO, crate::doc::MISSING_ERRORS_DOC_INFO, crate::doc::MISSING_PANICS_DOC_INFO, @@ -166,6 +168,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::floating_point_arithmetic::SUBOPTIMAL_FLOPS_INFO, crate::format::USELESS_FORMAT_INFO, crate::format_args::FORMAT_IN_FORMAT_ARGS_INFO, + crate::format_args::POINTER_FORMAT_INFO, crate::format_args::TO_STRING_IN_FORMAT_ARGS_INFO, crate::format_args::UNINLINED_FORMAT_ARGS_INFO, crate::format_args::UNNECESSARY_DEBUG_FORMATTING_INFO, @@ -211,6 +214,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::indexing_slicing::INDEXING_SLICING_INFO, crate::indexing_slicing::OUT_OF_BOUNDS_INDEXING_INFO, crate::ineffective_open_options::INEFFECTIVE_OPEN_OPTIONS_INFO, + crate::infallible_try_from::INFALLIBLE_TRY_FROM_INFO, crate::infinite_iter::INFINITE_ITER_INFO, crate::infinite_iter::MAYBE_INFINITE_ITER_INFO, crate::inherent_impl::MULTIPLE_INHERENT_IMPL_INFO, @@ -379,6 +383,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::methods::INSPECT_FOR_EACH_INFO, crate::methods::INTO_ITER_ON_REF_INFO, crate::methods::IO_OTHER_ERROR_INFO, + crate::methods::IP_CONSTANT_INFO, crate::methods::IS_DIGIT_ASCII_RADIX_INFO, crate::methods::ITERATOR_STEP_BY_ZERO_INFO, crate::methods::ITER_CLONED_COLLECT_INFO, diff --git a/src/tools/clippy/clippy_lints/src/default.rs b/src/tools/clippy/clippy_lints/src/default.rs index 886c325b355..a48e4d2fbd5 100644 --- a/src/tools/clippy/clippy_lints/src/default.rs +++ b/src/tools/clippy/clippy_lints/src/default.rs @@ -1,10 +1,9 @@ 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::{contains_name, get_parent_expr, in_automatically_derived, is_from_proc_macro}; +use clippy_utils::{contains_name, get_parent_expr, in_automatically_derived, is_expr_default, is_from_proc_macro}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; -use rustc_hir::def::Res; use rustc_hir::{Block, Expr, ExprKind, PatKind, QPath, Stmt, StmtKind, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; @@ -129,7 +128,7 @@ impl<'tcx> LateLintPass<'tcx> for Default { // only take bindings to identifiers && let PatKind::Binding(_, binding_id, ident, _) = local.pat.kind // only when assigning `... = Default::default()` - && is_expr_default(expr, cx) + && is_expr_default(cx, expr) && let binding_type = cx.typeck_results().node_type(binding_id) && let ty::Adt(adt, args) = *binding_type.kind() && adt.is_struct() @@ -251,19 +250,6 @@ impl<'tcx> LateLintPass<'tcx> for Default { } } -/// Checks if the given expression is the `default` method belonging to the `Default` trait. -fn is_expr_default<'tcx>(expr: &'tcx Expr<'tcx>, cx: &LateContext<'tcx>) -> bool { - if let ExprKind::Call(fn_expr, []) = &expr.kind - && let ExprKind::Path(qpath) = &fn_expr.kind - && let Res::Def(_, def_id) = cx.qpath_res(qpath, fn_expr.hir_id) - { - // right hand side of assignment is `Default::default` - cx.tcx.is_diagnostic_item(sym::default_fn, def_id) - } else { - false - } -} - /// Returns the reassigned field and the assigning expression (right-hand side of assign). fn field_reassigned_by_stmt<'tcx>(this: &Stmt<'tcx>, binding_name: Symbol) -> Option<(Ident, &'tcx Expr<'tcx>)> { if let StmtKind::Semi(later_expr) = this.kind diff --git a/src/tools/clippy/clippy_lints/src/disallowed_names.rs b/src/tools/clippy/clippy_lints/src/disallowed_names.rs index f55b0cf1c50..566aa12b08f 100644 --- a/src/tools/clippy/clippy_lints/src/disallowed_names.rs +++ b/src/tools/clippy/clippy_lints/src/disallowed_names.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint; -use clippy_utils::is_in_test; +use clippy_utils::{is_from_proc_macro, is_in_test}; use rustc_data_structures::fx::FxHashSet; use rustc_hir::{Pat, PatKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -43,8 +43,10 @@ impl_lint_pass!(DisallowedNames => [DISALLOWED_NAMES]); impl<'tcx> LateLintPass<'tcx> for DisallowedNames { fn check_pat(&mut self, cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>) { if let PatKind::Binding(.., ident, _) = pat.kind + && !ident.span.from_expansion() && self.disallow.contains(&ident.name) && !is_in_test(cx.tcx, pat.hir_id) + && !is_from_proc_macro(cx, &ident) { span_lint( cx, diff --git a/src/tools/clippy/clippy_lints/src/disallowed_types.rs b/src/tools/clippy/clippy_lints/src/disallowed_types.rs index 821bb25d2ce..7875cdd77e8 100644 --- a/src/tools/clippy/clippy_lints/src/disallowed_types.rs +++ b/src/tools/clippy/clippy_lints/src/disallowed_types.rs @@ -105,10 +105,10 @@ impl_lint_pass!(DisallowedTypes => [DISALLOWED_TYPES]); impl<'tcx> LateLintPass<'tcx> for DisallowedTypes { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { - if let ItemKind::Use(path, UseKind::Single(_)) = &item.kind { - if let Some(res) = path.res.type_ns { - self.check_res_emit(cx, &res, item.span); - } + if let ItemKind::Use(path, UseKind::Single(_)) = &item.kind + && let Some(res) = path.res.type_ns + { + self.check_res_emit(cx, &res, item.span); } } diff --git a/src/tools/clippy/clippy_lints/src/doc/doc_suspicious_footnotes.rs b/src/tools/clippy/clippy_lints/src/doc/doc_suspicious_footnotes.rs new file mode 100644 index 00000000000..289b6b915d4 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/doc/doc_suspicious_footnotes.rs @@ -0,0 +1,113 @@ +use clippy_utils::diagnostics::span_lint_and_then; +use rustc_ast::token::CommentKind; +use rustc_errors::Applicability; +use rustc_hir::{AttrStyle, Attribute}; +use rustc_lint::{LateContext, LintContext}; +use rustc_resolve::rustdoc::DocFragmentKind; + +use std::ops::Range; + +use super::{DOC_SUSPICIOUS_FOOTNOTES, Fragments}; + +pub fn check(cx: &LateContext<'_>, doc: &str, range: Range<usize>, fragments: &Fragments<'_>, attrs: &[Attribute]) { + for i in doc[range.clone()] + .bytes() + .enumerate() + .filter_map(|(i, c)| if c == b'[' { Some(i) } else { None }) + { + let start = i + range.start; + if doc.as_bytes().get(start + 1) == Some(&b'^') + && let Some(end) = all_numbers_upto_brace(doc, start + 2) + && doc.as_bytes().get(end) != Some(&b':') + && doc.as_bytes().get(start - 1) != Some(&b'\\') + && let Some(this_fragment) = { + // the `doc` string contains all fragments concatenated together + // figure out which one this suspicious footnote comes from + let mut starting_position = 0; + let mut found_fragment = fragments.fragments.last(); + for fragment in fragments.fragments { + if start >= starting_position && start < starting_position + fragment.doc.as_str().len() { + found_fragment = Some(fragment); + break; + } + starting_position += fragment.doc.as_str().len(); + } + found_fragment + } + { + let span = fragments.span(cx, start..end).unwrap_or(this_fragment.span); + span_lint_and_then( + cx, + DOC_SUSPICIOUS_FOOTNOTES, + span, + "looks like a footnote ref, but has no matching footnote", + |diag| { + if this_fragment.kind == DocFragmentKind::SugaredDoc { + let (doc_attr, (_, doc_attr_comment_kind)) = attrs + .iter() + .filter(|attr| attr.span().overlaps(this_fragment.span)) + .rev() + .find_map(|attr| Some((attr, attr.doc_str_and_comment_kind()?))) + .unwrap(); + let (to_add, terminator) = match (doc_attr_comment_kind, doc_attr.style()) { + (CommentKind::Line, AttrStyle::Outer) => ("\n///\n/// ", ""), + (CommentKind::Line, AttrStyle::Inner) => ("\n//!\n//! ", ""), + (CommentKind::Block, AttrStyle::Outer) => ("\n/** ", " */"), + (CommentKind::Block, AttrStyle::Inner) => ("\n/*! ", " */"), + }; + diag.span_suggestion_verbose( + doc_attr.span().shrink_to_hi(), + "add footnote definition", + format!( + "{to_add}{label}: <!-- description -->{terminator}", + label = &doc[start..end] + ), + Applicability::HasPlaceholders, + ); + } else { + let is_file_include = cx + .sess() + .source_map() + .span_to_snippet(this_fragment.span) + .as_ref() + .map(|vdoc| vdoc.trim()) + == Ok(doc); + if is_file_include { + // if this is a file include, then there's no quote marks + diag.span_suggestion_verbose( + this_fragment.span.shrink_to_hi(), + "add footnote definition", + format!("\n\n{label}: <!-- description -->", label = &doc[start..end],), + Applicability::HasPlaceholders, + ); + } else { + // otherwise, we wrap in a string + diag.span_suggestion_verbose( + this_fragment.span, + "add footnote definition", + format!( + "r#\"{doc}\n\n{label}: <!-- description -->\"#", + doc = this_fragment.doc, + label = &doc[start..end], + ), + Applicability::HasPlaceholders, + ); + } + } + }, + ); + } + } +} + +fn all_numbers_upto_brace(text: &str, i: usize) -> Option<usize> { + for (j, c) in text.as_bytes()[i..].iter().copied().enumerate().take(64) { + if c == b']' && j != 0 { + return Some(i + j + 1); + } + if !c.is_ascii_digit() || j >= 64 { + break; + } + } + None +} diff --git a/src/tools/clippy/clippy_lints/src/doc/mod.rs b/src/tools/clippy/clippy_lints/src/doc/mod.rs index c46dd09d60c..e0fc2fd9347 100644 --- a/src/tools/clippy/clippy_lints/src/doc/mod.rs +++ b/src/tools/clippy/clippy_lints/src/doc/mod.rs @@ -25,6 +25,7 @@ use std::ops::Range; use url::Url; mod doc_comment_double_space_linebreaks; +mod doc_suspicious_footnotes; mod include_in_doc_without_cfg; mod lazy_continuation; mod link_with_quotes; @@ -607,6 +608,37 @@ declare_clippy_lint! { "double-space used for doc comment linebreak instead of `\\`" } +declare_clippy_lint! { + /// ### What it does + /// Detects syntax that looks like a footnote reference. + /// + /// Rustdoc footnotes are compatible with GitHub-Flavored Markdown (GFM). + /// GFM does not parse a footnote reference unless its definition also + /// exists. This lint checks for footnote references with missing + /// definitions, unless it thinks you're writing a regex. + /// + /// ### Why is this bad? + /// This probably means that a footnote was meant to exist, + /// but was not written. + /// + /// ### Example + /// ```no_run + /// /// This is not a footnote[^1], because no definition exists. + /// fn my_fn() {} + /// ``` + /// Use instead: + /// ```no_run + /// /// This is a footnote[^1]. + /// /// + /// /// [^1]: defined here + /// fn my_fn() {} + /// ``` + #[clippy::version = "1.88.0"] + pub DOC_SUSPICIOUS_FOOTNOTES, + suspicious, + "looks like a link or footnote ref, but with no definition" +} + pub struct Documentation { valid_idents: FxHashSet<String>, check_private_items: bool, @@ -638,7 +670,8 @@ impl_lint_pass!(Documentation => [ DOC_OVERINDENTED_LIST_ITEMS, TOO_LONG_FIRST_DOC_PARAGRAPH, DOC_INCLUDE_WITHOUT_CFG, - DOC_COMMENT_DOUBLE_SPACE_LINEBREAKS + DOC_COMMENT_DOUBLE_SPACE_LINEBREAKS, + DOC_SUSPICIOUS_FOOTNOTES, ]); impl EarlyLintPass for Documentation { @@ -825,6 +858,7 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet<String>, attrs: &[ doc: &doc, fragments: &fragments, }, + attrs, )) } @@ -905,6 +939,7 @@ fn check_doc<'a, Events: Iterator<Item = (pulldown_cmark::Event<'a>, Range<usize events: Events, doc: &str, fragments: Fragments<'_>, + attrs: &[Attribute], ) -> DocHeaders { // true if a safety header was found let mut headers = DocHeaders::default(); @@ -1148,7 +1183,8 @@ fn check_doc<'a, Events: Iterator<Item = (pulldown_cmark::Event<'a>, Range<usize // Don't check the text associated with external URLs continue; } - text_to_check.push((text, range, code_level)); + text_to_check.push((text, range.clone(), code_level)); + doc_suspicious_footnotes::check(cx, doc, range, &fragments, attrs); } } FootnoteReference(_) => {} diff --git a/src/tools/clippy/clippy_lints/src/endian_bytes.rs b/src/tools/clippy/clippy_lints/src/endian_bytes.rs index a7670ffce88..75db923b1c3 100644 --- a/src/tools/clippy/clippy_lints/src/endian_bytes.rs +++ b/src/tools/clippy/clippy_lints/src/endian_bytes.rs @@ -1,6 +1,6 @@ use crate::Lint; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::is_lint_allowed; +use clippy_utils::{is_lint_allowed, sym}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::Ty; @@ -65,9 +65,9 @@ declare_clippy_lint! { declare_lint_pass!(EndianBytes => [HOST_ENDIAN_BYTES, LITTLE_ENDIAN_BYTES, BIG_ENDIAN_BYTES]); -const HOST_NAMES: [&str; 2] = ["from_ne_bytes", "to_ne_bytes"]; -const LITTLE_NAMES: [&str; 2] = ["from_le_bytes", "to_le_bytes"]; -const BIG_NAMES: [&str; 2] = ["from_be_bytes", "to_be_bytes"]; +const HOST_NAMES: [Symbol; 2] = [sym::from_ne_bytes, sym::to_ne_bytes]; +const LITTLE_NAMES: [Symbol; 2] = [sym::from_le_bytes, sym::to_le_bytes]; +const BIG_NAMES: [Symbol; 2] = [sym::from_be_bytes, sym::to_be_bytes]; #[derive(Clone, Debug)] enum LintKind { @@ -95,7 +95,7 @@ impl LintKind { } } - fn as_name(&self, prefix: Prefix) -> &str { + fn as_name(&self, prefix: Prefix) -> Symbol { let index = usize::from(prefix == Prefix::To); match self { @@ -133,7 +133,7 @@ fn maybe_lint_endian_bytes(cx: &LateContext<'_>, expr: &Expr<'_>, prefix: Prefix let le = LintKind::Little.as_name(prefix); let be = LintKind::Big.as_name(prefix); - let (lint, other_lints) = match name.as_str() { + let (lint, other_lints) = match name { name if name == ne => ((&LintKind::Host), [(&LintKind::Little), (&LintKind::Big)]), name if name == le => ((&LintKind::Little), [(&LintKind::Host), (&LintKind::Big)]), name if name == be => ((&LintKind::Big), [(&LintKind::Host), (&LintKind::Little)]), diff --git a/src/tools/clippy/clippy_lints/src/format_args.rs b/src/tools/clippy/clippy_lints/src/format_args.rs index a26e736c7ae..0c39aae9ca9 100644 --- a/src/tools/clippy/clippy_lints/src/format_args.rs +++ b/src/tools/clippy/clippy_lints/src/format_args.rs @@ -1,6 +1,8 @@ +use std::collections::hash_map::Entry; + use arrayvec::ArrayVec; use clippy_config::Conf; -use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_then}; use clippy_utils::macros::{ FormatArgsStorage, FormatParamUsage, MacroCall, find_format_arg_expr, format_arg_removal_span, format_placeholder_format_span, is_assert_macro, is_format_macro, is_panic, matching_root_macro_call, @@ -9,7 +11,7 @@ use clippy_utils::macros::{ use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::{implements_trait, is_type_lang_item}; -use clippy_utils::{is_diag_trait_item, is_from_proc_macro, is_in_test}; +use clippy_utils::{is_diag_trait_item, is_from_proc_macro, is_in_test, trait_ref_of_method}; use itertools::Itertools; use rustc_ast::{ FormatArgPosition, FormatArgPositionKind, FormatArgsPiece, FormatArgumentKind, FormatCount, FormatOptions, @@ -22,10 +24,12 @@ use rustc_errors::SuggestionStyle::{CompletelyHidden, ShowCode}; use rustc_hir::{Expr, ExprKind, LangItem}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::adjustment::{Adjust, Adjustment}; -use rustc_middle::ty::{List, Ty, TyCtxt}; +use rustc_middle::ty::{self, GenericArg, List, TraitRef, Ty, TyCtxt, Upcast}; use rustc_session::impl_lint_pass; use rustc_span::edition::Edition::Edition2021; use rustc_span::{Span, Symbol, sym}; +use rustc_trait_selection::infer::TyCtxtInferExt; +use rustc_trait_selection::traits::{Obligation, ObligationCause, Selection, SelectionContext}; declare_clippy_lint! { /// ### What it does @@ -194,12 +198,41 @@ declare_clippy_lint! { "use of a format specifier that has no effect" } +declare_clippy_lint! { + /// ### What it does + /// Detects [pointer format] as well as `Debug` formatting of raw pointers or function pointers + /// or any types that have a derived `Debug` impl that recursively contains them. + /// + /// ### Why restrict this? + /// The addresses are only useful in very specific contexts, and certain projects may want to keep addresses of + /// certain data structures or functions from prying hacker eyes as an additional line of security. + /// + /// ### Known problems + /// The lint currently only looks through derived `Debug` implementations. Checking whether a manual + /// implementation prints an address is left as an exercise to the next lint implementer. + /// + /// ### Example + /// ```no_run + /// let foo = &0_u32; + /// fn bar() {} + /// println!("{:p}", foo); + /// let _ = format!("{:?}", &(bar as fn())); + /// ``` + /// + /// [pointer format]: https://doc.rust-lang.org/std/fmt/index.html#formatting-traits + #[clippy::version = "1.88.0"] + pub POINTER_FORMAT, + restriction, + "formatting a pointer" +} + impl_lint_pass!(FormatArgs<'_> => [ FORMAT_IN_FORMAT_ARGS, TO_STRING_IN_FORMAT_ARGS, UNINLINED_FORMAT_ARGS, UNNECESSARY_DEBUG_FORMATTING, UNUSED_FORMAT_SPECS, + POINTER_FORMAT, ]); #[allow(clippy::struct_field_names)] @@ -208,6 +241,8 @@ pub struct FormatArgs<'tcx> { msrv: Msrv, ignore_mixed: bool, ty_msrv_map: FxHashMap<Ty<'tcx>, Option<RustcVersion>>, + has_derived_debug: FxHashMap<Ty<'tcx>, bool>, + has_pointer_format: FxHashMap<Ty<'tcx>, bool>, } impl<'tcx> FormatArgs<'tcx> { @@ -218,6 +253,8 @@ impl<'tcx> FormatArgs<'tcx> { msrv: conf.msrv, ignore_mixed: conf.allow_mixed_uninlined_format_args, ty_msrv_map, + has_derived_debug: FxHashMap::default(), + has_pointer_format: FxHashMap::default(), } } } @@ -228,7 +265,7 @@ impl<'tcx> LateLintPass<'tcx> for FormatArgs<'tcx> { && is_format_macro(cx, macro_call.def_id) && let Some(format_args) = self.format_args.get(cx, expr, macro_call.expn) { - let linter = FormatArgsExpr { + let mut linter = FormatArgsExpr { cx, expr, macro_call: ¯o_call, @@ -236,6 +273,8 @@ impl<'tcx> LateLintPass<'tcx> for FormatArgs<'tcx> { ignore_mixed: self.ignore_mixed, msrv: &self.msrv, ty_msrv_map: &self.ty_msrv_map, + has_derived_debug: &mut self.has_derived_debug, + has_pointer_format: &mut self.has_pointer_format, }; linter.check_templates(); @@ -255,10 +294,12 @@ struct FormatArgsExpr<'a, 'tcx> { ignore_mixed: bool, msrv: &'a Msrv, ty_msrv_map: &'a FxHashMap<Ty<'tcx>, Option<RustcVersion>>, + has_derived_debug: &'a mut FxHashMap<Ty<'tcx>, bool>, + has_pointer_format: &'a mut FxHashMap<Ty<'tcx>, bool>, } impl<'tcx> FormatArgsExpr<'_, 'tcx> { - fn check_templates(&self) { + fn check_templates(&mut self) { for piece in &self.format_args.template { if let FormatArgsPiece::Placeholder(placeholder) = piece && let Ok(index) = placeholder.argument.index @@ -279,6 +320,17 @@ impl<'tcx> FormatArgsExpr<'_, 'tcx> { if placeholder.format_trait == FormatTrait::Debug { let name = self.cx.tcx.item_name(self.macro_call.def_id); self.check_unnecessary_debug_formatting(name, arg_expr); + if let Some(span) = placeholder.span + && self.has_pointer_debug(self.cx.typeck_results().expr_ty(arg_expr), 0) + { + span_lint(self.cx, POINTER_FORMAT, span, "pointer formatting detected"); + } + } + + if placeholder.format_trait == FormatTrait::Pointer + && let Some(span) = placeholder.span + { + span_lint(self.cx, POINTER_FORMAT, span, "pointer formatting detected"); } } } @@ -490,6 +542,16 @@ impl<'tcx> FormatArgsExpr<'_, 'tcx> { && let ty = cx.typeck_results().expr_ty(value) && self.can_display_format(ty) { + // If the parent function is a method of `Debug`, we don't want to lint + // because it is likely that the user wants to use `Debug` formatting. + let parent_fn = cx.tcx.hir_get_parent_item(value.hir_id); + if let Some(trait_ref) = trait_ref_of_method(cx, parent_fn) + && let Some(trait_def_id) = trait_ref.trait_def_id() + && cx.tcx.is_diagnostic_item(sym::Debug, trait_def_id) + { + return; + } + let snippet = snippet(cx.sess(), value.span, ".."); span_lint_and_then( cx, @@ -559,6 +621,58 @@ impl<'tcx> FormatArgsExpr<'_, 'tcx> { false } + + fn has_pointer_debug(&mut self, ty: Ty<'tcx>, depth: usize) -> bool { + let cx = self.cx; + let tcx = cx.tcx; + if !tcx.recursion_limit().value_within_limit(depth) { + return false; + } + let depth = depth + 1; + let typing_env = cx.typing_env(); + let ty = tcx.normalize_erasing_regions(typing_env, ty); + match ty.kind() { + ty::RawPtr(..) | ty::FnPtr(..) | ty::FnDef(..) => true, + ty::Ref(_, t, _) | ty::Slice(t) | ty::Array(t, _) => self.has_pointer_debug(*t, depth), + ty::Tuple(ts) => ts.iter().any(|t| self.has_pointer_debug(t, depth)), + ty::Adt(adt, args) => { + match self.has_pointer_format.entry(ty) { + Entry::Occupied(o) => return *o.get(), + Entry::Vacant(v) => v.insert(false), + }; + let derived_debug = if let Some(&known) = self.has_derived_debug.get(&ty) { + known + } else { + let Some(trait_id) = tcx.get_diagnostic_item(sym::Debug) else { + return false; + }; + let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); + let trait_ref = TraitRef::new(tcx, trait_id, [GenericArg::from(ty)]); + let obligation = Obligation { + cause: ObligationCause::dummy(), + param_env, + recursion_depth: 0, + predicate: trait_ref.upcast(tcx), + }; + let selection = SelectionContext::new(&infcx).select(&obligation); + let derived = if let Ok(Some(Selection::UserDefined(data))) = selection { + tcx.has_attr(data.impl_def_id, sym::automatically_derived) + } else { + false + }; + self.has_derived_debug.insert(ty, derived); + derived + }; + let pointer_debug = derived_debug + && adt.all_fields().any(|f| { + self.has_pointer_debug(tcx.normalize_erasing_regions(typing_env, f.ty(tcx, args)), depth) + }); + self.has_pointer_format.insert(ty, pointer_debug); + pointer_debug + }, + _ => false, + } + } } fn make_ty_msrv_map(tcx: TyCtxt<'_>) -> FxHashMap<Ty<'_>, Option<RustcVersion>> { diff --git a/src/tools/clippy/clippy_lints/src/functions/mod.rs b/src/tools/clippy/clippy_lints/src/functions/mod.rs index d0d02a382d1..6051dc9479b 100644 --- a/src/tools/clippy/clippy_lints/src/functions/mod.rs +++ b/src/tools/clippy/clippy_lints/src/functions/mod.rs @@ -303,7 +303,7 @@ declare_clippy_lint! { /// to the name of the method, when there is a field's whose name matches that of the method. /// /// ### Why is this bad? - /// It is most likely that such a method is a bug caused by a typo or by copy-pasting. + /// It is most likely that such a method is a bug caused by a typo or by copy-pasting. /// /// ### Example diff --git a/src/tools/clippy/clippy_lints/src/if_let_mutex.rs b/src/tools/clippy/clippy_lints/src/if_let_mutex.rs index 6444e99ae9c..a99118f90f8 100644 --- a/src/tools/clippy/clippy_lints/src/if_let_mutex.rs +++ b/src/tools/clippy/clippy_lints/src/if_let_mutex.rs @@ -1,14 +1,13 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::for_each_expr_without_closures; -use clippy_utils::{eq_expr_value, higher}; +use clippy_utils::{eq_expr_value, higher, sym}; use core::ops::ControlFlow; use rustc_errors::Diag; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::edition::Edition::Edition2024; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -94,7 +93,7 @@ fn mutex_lock_call<'tcx>( op_mutex: Option<&'tcx Expr<'_>>, ) -> ControlFlow<&'tcx Expr<'tcx>> { if let ExprKind::MethodCall(path, self_arg, [], _) = &expr.kind - && path.ident.as_str() == "lock" + && path.ident.name == sym::lock && let ty = cx.typeck_results().expr_ty(self_arg).peel_refs() && is_type_diagnostic_item(cx, ty, sym::Mutex) && op_mutex.is_none_or(|op| eq_expr_value(cx, self_arg, op)) diff --git a/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs b/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs index 0823ef53ef9..c743501da25 100644 --- a/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs +++ b/src/tools/clippy/clippy_lints/src/implicit_saturating_sub.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::{Sugg, make_binop}; use clippy_utils::{ - SpanlessEq, eq_expr_value, higher, is_in_const_context, is_integer_literal, peel_blocks, peel_blocks_with_stmt, + SpanlessEq, eq_expr_value, higher, is_in_const_context, is_integer_literal, peel_blocks, peel_blocks_with_stmt, sym, }; use rustc_ast::ast::LitKind; use rustc_data_structures::packed::Pu128; @@ -11,7 +11,7 @@ use rustc_errors::Applicability; use rustc_hir::{AssignOpKind, BinOp, BinOpKind, Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::Span; +use rustc_span::{Span, Symbol}; declare_clippy_lint! { /// ### What it does @@ -325,7 +325,7 @@ fn check_with_condition<'tcx>( } // Get the variable name - let var_name = ares_path.segments[0].ident.name.as_str(); + let var_name = ares_path.segments[0].ident.name; match cond_num_val.kind { ExprKind::Lit(cond_lit) => { // Check if the constant is zero @@ -337,7 +337,7 @@ fn check_with_condition<'tcx>( } }, ExprKind::Path(QPath::TypeRelative(_, name)) => { - if name.ident.as_str() == "MIN" + if name.ident.name == sym::MIN && let Some(const_id) = cx.typeck_results().type_dependent_def_id(cond_num_val.hir_id) && let Some(impl_id) = cx.tcx.impl_of_method(const_id) && let None = cx.tcx.impl_trait_ref(impl_id) // An inherent impl @@ -348,7 +348,7 @@ fn check_with_condition<'tcx>( }, ExprKind::Call(func, []) => { if let ExprKind::Path(QPath::TypeRelative(_, name)) = func.kind - && name.ident.as_str() == "min_value" + && name.ident.name == sym::min_value && let Some(func_id) = cx.typeck_results().type_dependent_def_id(func.hir_id) && let Some(impl_id) = cx.tcx.impl_of_method(func_id) && let None = cx.tcx.impl_trait_ref(impl_id) // An inherent impl @@ -383,7 +383,7 @@ fn subtracts_one<'a>(cx: &LateContext<'_>, expr: &'a Expr<'a>) -> Option<&'a Exp } } -fn print_lint_and_sugg(cx: &LateContext<'_>, var_name: &str, expr: &Expr<'_>) { +fn print_lint_and_sugg(cx: &LateContext<'_>, var_name: Symbol, expr: &Expr<'_>) { span_lint_and_sugg( cx, IMPLICIT_SATURATING_SUB, diff --git a/src/tools/clippy/clippy_lints/src/infallible_try_from.rs b/src/tools/clippy/clippy_lints/src/infallible_try_from.rs new file mode 100644 index 00000000000..b54c289fa7e --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/infallible_try_from.rs @@ -0,0 +1,76 @@ +use clippy_utils::diagnostics::span_lint; +use clippy_utils::sym; +use rustc_errors::MultiSpan; +use rustc_hir::{AssocItemKind, Item, ItemKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_session::declare_lint_pass; + +declare_clippy_lint! { + /// ### What it does + /// + /// Finds manual impls of `TryFrom` with infallible error types. + /// + /// ### Why is this bad? + /// + /// Infalliable conversions should be implemented via `From` with the blanket conversion. + /// + /// ### Example + /// ```no_run + /// use std::convert::Infallible; + /// struct MyStruct(i16); + /// impl TryFrom<i16> for MyStruct { + /// type Error = Infallible; + /// fn try_from(other: i16) -> Result<Self, Infallible> { + /// Ok(Self(other.into())) + /// } + /// } + /// ``` + /// Use instead: + /// ```no_run + /// struct MyStruct(i16); + /// impl From<i16> for MyStruct { + /// fn from(other: i16) -> Self { + /// Self(other) + /// } + /// } + /// ``` + #[clippy::version = "1.88.0"] + pub INFALLIBLE_TRY_FROM, + suspicious, + "TryFrom with infallible Error type" +} +declare_lint_pass!(InfallibleTryFrom => [INFALLIBLE_TRY_FROM]); + +impl<'tcx> LateLintPass<'tcx> for InfallibleTryFrom { + fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { + let ItemKind::Impl(imp) = item.kind else { return }; + let Some(r#trait) = imp.of_trait else { return }; + let Some(trait_def_id) = r#trait.trait_def_id() else { + return; + }; + if !cx.tcx.is_diagnostic_item(sym::TryFrom, trait_def_id) { + return; + } + for ii in imp.items { + if ii.kind == AssocItemKind::Type { + let ii = cx.tcx.hir_impl_item(ii.id); + if ii.ident.name != sym::Error { + continue; + } + let ii_ty = ii.expect_type(); + let ii_ty_span = ii_ty.span; + let ii_ty = clippy_utils::ty::ty_from_hir_ty(cx, ii_ty); + if !ii_ty.is_inhabited_from(cx.tcx, ii.owner_id.to_def_id(), cx.typing_env()) { + let mut span = MultiSpan::from_span(cx.tcx.def_span(item.owner_id.to_def_id())); + span.push_span_label(ii_ty_span, "infallible error type"); + span_lint( + cx, + INFALLIBLE_TRY_FROM, + span, + "infallible TryFrom impl; consider implementing From, instead", + ); + } + } + } + } +} diff --git a/src/tools/clippy/clippy_lints/src/lib.rs b/src/tools/clippy/clippy_lints/src/lib.rs index 92eb3d7a7c5..be9142b17fe 100644 --- a/src/tools/clippy/clippy_lints/src/lib.rs +++ b/src/tools/clippy/clippy_lints/src/lib.rs @@ -55,6 +55,7 @@ extern crate rustc_session; extern crate rustc_span; extern crate rustc_target; extern crate rustc_trait_selection; +extern crate smallvec; extern crate thin_vec; #[macro_use] @@ -65,11 +66,10 @@ extern crate clippy_utils; mod utils; -pub mod ctfe; // Very important lint, do not remove (rust#125116) pub mod declared_lints; pub mod deprecated_lints; -// begin lints modules, do not remove this comment, it’s used in `update_lints` +// begin lints modules, do not remove this comment, it's used in `update_lints` mod absolute_paths; mod almost_complete_range; mod approx_const; @@ -95,6 +95,7 @@ mod casts; mod cfg_not_test; mod checked_conversions; mod cloned_ref_to_slice_refs; +mod coerce_container_to_any; mod cognitive_complexity; mod collapsible_if; mod collection_is_never_read; @@ -169,6 +170,7 @@ mod inconsistent_struct_constructor; mod index_refutable_slice; mod indexing_slicing; mod ineffective_open_options; +mod infallible_try_from; mod infinite_iter; mod inherent_impl; mod inherent_to_string; @@ -404,7 +406,7 @@ mod zero_div_zero; mod zero_repeat_side_effects; mod zero_sized_map_values; mod zombie_processes; -// end lints modules, do not remove this comment, it’s used in `update_lints` +// end lints modules, do not remove this comment, it's used in `update_lints` use clippy_config::{Conf, get_configuration_metadata, sanitize_explanation}; use clippy_utils::macros::FormatArgsStorage; @@ -583,8 +585,6 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { let attrs = attr_storage.clone(); store.register_early_pass(move || Box::new(AttrCollector::new(attrs.clone()))); - store.register_late_pass(|_| Box::new(ctfe::ClippyCtfe)); - store.register_late_pass(move |_| Box::new(operators::arithmetic_side_effects::ArithmeticSideEffects::new(conf))); store.register_late_pass(|_| Box::new(utils::dump_hir::DumpHir)); store.register_late_pass(|_| Box::new(utils::author::Author)); @@ -946,5 +946,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(|_| Box::new(single_option_map::SingleOptionMap)); store.register_late_pass(move |_| Box::new(redundant_test_prefix::RedundantTestPrefix)); store.register_late_pass(|_| Box::new(cloned_ref_to_slice_refs::ClonedRefToSliceRefs::new(conf))); + store.register_late_pass(|_| Box::new(infallible_try_from::InfallibleTryFrom)); + store.register_late_pass(|_| Box::new(coerce_container_to_any::CoerceContainerToAny)); // add lints here, do not remove this comment, it's used in `new_lint` } diff --git a/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs b/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs index 81f14b7b2b0..ddb8bb536c0 100644 --- a/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs +++ b/src/tools/clippy/clippy_lints/src/loops/manual_flatten.rs @@ -2,8 +2,9 @@ use super::MANUAL_FLATTEN; use super::utils::make_iterator_snippet; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::msrvs::{self, Msrv}; +use clippy_utils::source::{HasSession, indent_of, reindent_multiline, snippet_with_applicability}; use clippy_utils::visitors::is_local_used; -use clippy_utils::{higher, is_refutable, path_to_local_id, peel_blocks_with_stmt}; +use clippy_utils::{higher, is_refutable, path_to_local_id, peel_blocks_with_stmt, span_contains_comment}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Expr, Pat, PatKind}; @@ -39,13 +40,20 @@ pub(super) fn check<'tcx>( && msrv.meets(cx, msrvs::ITER_FLATTEN) && !is_refutable(cx, inner_pat) { + if arg.span.from_expansion() || if_then.span.from_expansion() { + return; + } let if_let_type = if some_ctor { "Some" } else { "Ok" }; // Prepare the error message let msg = format!("unnecessary `if let` since only the `{if_let_type}` variant of the iterator element is used"); // Prepare the help message - let mut applicability = Applicability::MaybeIncorrect; + let mut applicability = if span_contains_comment(cx.sess().source_map(), body.span) { + Applicability::MaybeIncorrect + } else { + Applicability::MachineApplicable + }; let arg_snippet = make_iterator_snippet(cx, arg, &mut applicability); let copied = match cx.typeck_results().expr_ty(let_expr).kind() { ty::Ref(_, inner, _) => match inner.kind() { @@ -55,20 +63,26 @@ pub(super) fn check<'tcx>( _ => "", }; - let sugg = format!("{arg_snippet}{copied}.flatten()"); + let help_msg = "try `.flatten()` and remove the `if let` statement in the for loop"; - // If suggestion is not a one-liner, it won't be shown inline within the error message. In that - // case, it will be shown in the extra `help` message at the end, which is why the first - // `help_msg` needs to refer to the correct relative position of the suggestion. - let help_msg = if sugg.contains('\n') { - "remove the `if let` statement in the for loop and then..." - } else { - "...and remove the `if let` statement in the for loop" - }; + let pat_snippet = + snippet_with_applicability(cx, inner_pat.span.source_callsite(), "_", &mut applicability).to_string(); + let body_snippet = + snippet_with_applicability(cx, if_then.span.source_callsite(), "[body]", &mut applicability).to_string(); + let suggestions = vec![ + // flatten the iterator + (arg.span, format!("{arg_snippet}{copied}.flatten()")), + (pat.span, pat_snippet), + // remove the `if let` statement + ( + body.span, + reindent_multiline(&body_snippet, true, indent_of(cx, body.span)), + ), + ]; span_lint_and_then(cx, MANUAL_FLATTEN, span, msg, |diag| { - diag.span_suggestion(arg.span, "try", sugg, applicability); diag.span_help(inner_expr.span, help_msg); + diag.multipart_suggestion("try", suggestions, applicability); }); } } diff --git a/src/tools/clippy/clippy_lints/src/manual_clamp.rs b/src/tools/clippy/clippy_lints/src/manual_clamp.rs index 02afe9f0997..42fe386d2c3 100644 --- a/src/tools/clippy/clippy_lints/src/manual_clamp.rs +++ b/src/tools/clippy/clippy_lints/src/manual_clamp.rs @@ -8,7 +8,7 @@ use clippy_utils::ty::implements_trait; use clippy_utils::visitors::is_const_evaluatable; use clippy_utils::{ MaybePath, eq_expr_value, is_diag_trait_item, is_in_const_context, is_trait_method, path_res, path_to_local_id, - peel_blocks, peel_blocks_with_stmt, + peel_blocks, peel_blocks_with_stmt, sym, }; use itertools::Itertools; use rustc_errors::{Applicability, Diag}; @@ -18,7 +18,6 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::Ty; use rustc_session::impl_lint_pass; use rustc_span::Span; -use rustc_span::symbol::sym; use std::cmp::Ordering; use std::ops::Deref; @@ -299,9 +298,9 @@ fn is_max_min_pattern<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> O && (cx.typeck_results().expr_ty_adjusted(input).is_floating_point() || is_trait_method(cx, receiver, sym::Ord)) { let is_float = cx.typeck_results().expr_ty_adjusted(input).is_floating_point(); - let (min, max) = match (seg_first.ident.as_str(), seg_second.ident.as_str()) { - ("min", "max") => (arg_second, arg_first), - ("max", "min") => (arg_first, arg_second), + let (min, max) = match (seg_first.ident.name, seg_second.ident.name) { + (sym::min, sym::max) => (arg_second, arg_first), + (sym::max, sym::min) => (arg_first, arg_second), _ => return None, }; Some(ClampSuggestion { diff --git a/src/tools/clippy/clippy_lints/src/manual_string_new.rs b/src/tools/clippy/clippy_lints/src/manual_string_new.rs index 73ee1c3c78a..9b590e092d0 100644 --- a/src/tools/clippy/clippy_lints/src/manual_string_new.rs +++ b/src/tools/clippy/clippy_lints/src/manual_string_new.rs @@ -1,11 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::sym; use rustc_ast::LitKind; use rustc_errors::Applicability::MachineApplicable; use rustc_hir::{Expr, ExprKind, PathSegment, QPath, TyKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{Span, sym}; +use rustc_span::Span; declare_clippy_lint! { /// ### What it does @@ -89,9 +90,10 @@ fn warn_then_suggest(cx: &LateContext<'_>, span: Span) { /// Tries to parse an expression as a method call, emitting the warning if necessary. fn parse_method_call(cx: &LateContext<'_>, span: Span, path_segment: &PathSegment<'_>, receiver: &Expr<'_>) { - let ident = path_segment.ident.as_str(); let method_arg_kind = &receiver.kind; - if ["to_string", "to_owned", "into"].contains(&ident) && is_expr_kind_empty_str(method_arg_kind) { + if matches!(path_segment.ident.name, sym::to_string | sym::to_owned | sym::into) + && is_expr_kind_empty_str(method_arg_kind) + { warn_then_suggest(cx, span); } else if let ExprKind::Call(func, [arg]) = method_arg_kind { // If our first argument is a function call itself, it could be an `unwrap`-like function. diff --git a/src/tools/clippy/clippy_lints/src/match_result_ok.rs b/src/tools/clippy/clippy_lints/src/match_result_ok.rs index 2a5fc8b6609..e0cb5d14d3c 100644 --- a/src/tools/clippy/clippy_lints/src/match_result_ok.rs +++ b/src/tools/clippy/clippy_lints/src/match_result_ok.rs @@ -1,12 +1,11 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::{higher, is_res_lang_ctor}; +use clippy_utils::{higher, is_res_lang_ctor, sym}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, LangItem, PatKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -57,7 +56,7 @@ impl<'tcx> LateLintPass<'tcx> for MatchResultOk { if let ExprKind::MethodCall(ok_path, recv, [], ..) = let_expr.kind //check is expr.ok() has type Result<T,E>.ok(, _) && let PatKind::TupleStruct(ref pat_path, [ok_pat], _) = let_pat.kind //get operation - && ok_path.ident.as_str() == "ok" + && ok_path.ident.name == sym::ok && is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(recv), sym::Result) && is_res_lang_ctor(cx, cx.qpath_res(pat_path, let_pat.hir_id), LangItem::OptionSome) && let ctxt = expr.span.ctxt() diff --git a/src/tools/clippy/clippy_lints/src/matches/match_single_binding.rs b/src/tools/clippy/clippy_lints/src/matches/match_single_binding.rs index adda3586990..6a76c6cedd0 100644 --- a/src/tools/clippy/clippy_lints/src/matches/match_single_binding.rs +++ b/src/tools/clippy/clippy_lints/src/matches/match_single_binding.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::macros::HirNode; use clippy_utils::source::{indent_of, snippet, snippet_block_with_context, snippet_with_context}; -use clippy_utils::{get_parent_expr, is_refutable, peel_blocks}; +use clippy_utils::{is_refutable, peel_blocks}; use rustc_errors::Applicability; use rustc_hir::{Arm, Expr, ExprKind, Node, PatKind, StmtKind}; use rustc_lint::LateContext; @@ -9,6 +9,7 @@ use rustc_span::Span; use super::MATCH_SINGLE_BINDING; +#[derive(Debug)] enum AssignmentExpr { Assign { span: Span, match_span: Span }, Local { span: Span, pat_span: Span }, @@ -160,6 +161,17 @@ fn opt_parent_assign_span<'a>(cx: &LateContext<'a>, ex: &Expr<'a>) -> Option<Ass None } +fn expr_parent_requires_curlies<'a>(cx: &LateContext<'a>, match_expr: &Expr<'a>) -> bool { + let parent = cx.tcx.parent_hir_node(match_expr.hir_id); + matches!( + parent, + Node::Expr(Expr { + kind: ExprKind::Closure { .. }, + .. + }) | Node::AnonConst(..) + ) +} + fn sugg_with_curlies<'a>( cx: &LateContext<'a>, (ex, match_expr): (&Expr<'a>, &Expr<'a>), @@ -172,9 +184,7 @@ fn sugg_with_curlies<'a>( let mut indent = " ".repeat(indent_of(cx, ex.span).unwrap_or(0)); let (mut cbrace_start, mut cbrace_end) = (String::new(), String::new()); - if let Some(parent_expr) = get_parent_expr(cx, match_expr) - && let ExprKind::Closure { .. } = parent_expr.kind - { + if expr_parent_requires_curlies(cx, match_expr) { cbrace_end = format!("\n{indent}}}"); // Fix body indent due to the closure indent = " ".repeat(indent_of(cx, bind_names).unwrap_or(0)); diff --git a/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs b/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs index 65b93a095b9..8b4c1700051 100644 --- a/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs +++ b/src/tools/clippy/clippy_lints/src/matches/match_str_case_mismatch.rs @@ -1,6 +1,7 @@ use std::ops::ControlFlow; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::sym; use clippy_utils::ty::is_type_lang_item; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; @@ -42,7 +43,7 @@ impl<'tcx> Visitor<'tcx> for MatchExprVisitor<'_, 'tcx> { type Result = ControlFlow<CaseMethod>; fn visit_expr(&mut self, ex: &'tcx Expr<'_>) -> Self::Result { if let ExprKind::MethodCall(segment, receiver, [], _) = ex.kind { - let result = self.case_altered(segment.ident.as_str(), receiver); + let result = self.case_altered(segment.ident.name, receiver); if result.is_break() { return result; } @@ -53,7 +54,7 @@ impl<'tcx> Visitor<'tcx> for MatchExprVisitor<'_, 'tcx> { } impl MatchExprVisitor<'_, '_> { - fn case_altered(&mut self, segment_ident: &str, receiver: &Expr<'_>) -> ControlFlow<CaseMethod> { + fn case_altered(&mut self, segment_ident: Symbol, receiver: &Expr<'_>) -> ControlFlow<CaseMethod> { if let Some(case_method) = get_case_method(segment_ident) { let ty = self.cx.typeck_results().expr_ty(receiver).peel_refs(); @@ -66,12 +67,12 @@ impl MatchExprVisitor<'_, '_> { } } -fn get_case_method(segment_ident_str: &str) -> Option<CaseMethod> { - match segment_ident_str { - "to_lowercase" => Some(CaseMethod::LowerCase), - "to_ascii_lowercase" => Some(CaseMethod::AsciiLowerCase), - "to_uppercase" => Some(CaseMethod::UpperCase), - "to_ascii_uppercase" => Some(CaseMethod::AsciiUppercase), +fn get_case_method(segment_ident: Symbol) -> Option<CaseMethod> { + match segment_ident { + sym::to_lowercase => Some(CaseMethod::LowerCase), + sym::to_ascii_lowercase => Some(CaseMethod::AsciiLowerCase), + sym::to_uppercase => Some(CaseMethod::UpperCase), + sym::to_ascii_uppercase => Some(CaseMethod::AsciiUppercase), _ => None, } } diff --git a/src/tools/clippy/clippy_lints/src/methods/ip_constant.rs b/src/tools/clippy/clippy_lints/src/methods/ip_constant.rs new file mode 100644 index 00000000000..83803fba6a1 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/methods/ip_constant.rs @@ -0,0 +1,52 @@ +use clippy_utils::consts::{ConstEvalCtxt, Constant}; +use clippy_utils::diagnostics::span_lint_and_then; +use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind, QPath, Ty, TyKind}; +use rustc_lint::LateContext; +use rustc_span::sym; +use smallvec::SmallVec; + +use super::IP_CONSTANT; + +pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, func: &Expr<'_>, args: &[Expr<'_>]) { + if let ExprKind::Path(QPath::TypeRelative( + Ty { + kind: TyKind::Path(QPath::Resolved(_, func_path)), + .. + }, + p, + )) = func.kind + && p.ident.name == sym::new + && let Some(func_def_id) = func_path.res.opt_def_id() + && matches!( + cx.tcx.get_diagnostic_name(func_def_id), + Some(sym::Ipv4Addr | sym::Ipv6Addr) + ) + && let Some(args) = args + .iter() + .map(|arg| { + if let Some(Constant::Int(constant @ (0 | 1 | 127 | 255))) = ConstEvalCtxt::new(cx).eval(arg) { + u8::try_from(constant).ok() + } else { + None + } + }) + .collect::<Option<SmallVec<[u8; 8]>>>() + { + let constant_name = match args.as_slice() { + [0, 0, 0, 0] | [0, 0, 0, 0, 0, 0, 0, 0] => "UNSPECIFIED", + [127, 0, 0, 1] | [0, 0, 0, 0, 0, 0, 0, 1] => "LOCALHOST", + [255, 255, 255, 255] => "BROADCAST", + _ => return, + }; + + span_lint_and_then(cx, IP_CONSTANT, expr.span, "hand-coded well-known IP address", |diag| { + diag.span_suggestion_verbose( + expr.span.with_lo(p.ident.span.lo()), + "use", + constant_name, + Applicability::MachineApplicable, + ); + }); + } +} diff --git a/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs b/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs index c88462129af..cbb1b450e60 100644 --- a/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs +++ b/src/tools/clippy/clippy_lints/src/methods/iter_kv_map.rs @@ -46,7 +46,7 @@ pub(super) fn check<'tcx>( if let ExprKind::Path(rustc_hir::QPath::Resolved(_, path)) = body_expr.kind && let [local_ident] = path.segments - && local_ident.ident.as_str() == bound_ident.as_str() + && local_ident.ident.name == bound_ident.name { span_lint_and_sugg( cx, diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs b/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs index e2df8ce1513..c785b23bc9c 100644 --- a/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs +++ b/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs @@ -72,9 +72,9 @@ fn is_min_or_max(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> Option<MinMax> { if let hir::ExprKind::Call(func, []) = &expr.kind && let hir::ExprKind::Path(hir::QPath::TypeRelative(_, segment)) = &func.kind { - match segment.ident.as_str() { - "max_value" => return Some(MinMax::Max), - "min_value" => return Some(MinMax::Min), + match segment.ident.name { + sym::max_value => return Some(MinMax::Max), + sym::min_value => return Some(MinMax::Min), _ => {}, } } diff --git a/src/tools/clippy/clippy_lints/src/methods/mod.rs b/src/tools/clippy/clippy_lints/src/methods/mod.rs index bc159206985..347960e0003 100644 --- a/src/tools/clippy/clippy_lints/src/methods/mod.rs +++ b/src/tools/clippy/clippy_lints/src/methods/mod.rs @@ -37,6 +37,7 @@ mod inefficient_to_string; mod inspect_for_each; mod into_iter_on_ref; mod io_other_error; +mod ip_constant; mod is_digit_ascii_radix; mod is_empty; mod iter_cloned_collect; @@ -4528,6 +4529,42 @@ declare_clippy_lint! { "detect swap with a temporary value" } +declare_clippy_lint! { + /// ### What it does + /// Checks for IP addresses that could be replaced with predefined constants such as + /// `Ipv4Addr::new(127, 0, 0, 1)` instead of using the appropriate constants. + /// + /// ### Why is this bad? + /// Using specific IP addresses like `127.0.0.1` or `::1` is less clear and less maintainable than using the + /// predefined constants `Ipv4Addr::LOCALHOST` or `Ipv6Addr::LOCALHOST`. These constants improve code + /// readability, make the intent explicit, and are less error-prone. + /// + /// ### Example + /// ```no_run + /// use std::net::{Ipv4Addr, Ipv6Addr}; + /// + /// // IPv4 loopback + /// let addr_v4 = Ipv4Addr::new(127, 0, 0, 1); + /// + /// // IPv6 loopback + /// let addr_v6 = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + /// ``` + /// Use instead: + /// ```no_run + /// use std::net::{Ipv4Addr, Ipv6Addr}; + /// + /// // IPv4 loopback + /// let addr_v4 = Ipv4Addr::LOCALHOST; + /// + /// // IPv6 loopback + /// let addr_v6 = Ipv6Addr::LOCALHOST; + /// ``` + #[clippy::version = "1.89.0"] + pub IP_CONSTANT, + pedantic, + "hardcoded localhost IP address" +} + #[expect(clippy::struct_excessive_bools)] pub struct Methods { avoid_breaking_exported_api: bool, @@ -4706,6 +4743,7 @@ impl_lint_pass!(Methods => [ MANUAL_CONTAINS, IO_OTHER_ERROR, SWAP_WITH_TEMPORARY, + IP_CONSTANT, ]); /// Extracts a method call name, args, and `Span` of the method name. @@ -4738,6 +4776,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods { useless_nonzero_new_unchecked::check(cx, expr, func, args, self.msrv); io_other_error::check(cx, expr, func, args, self.msrv); swap_with_temporary::check(cx, expr, func, args); + ip_constant::check(cx, expr, func, args); }, ExprKind::MethodCall(method_call, receiver, args, _) => { let method_span = method_call.ident.span; diff --git a/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs b/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs index 2b75d6a8248..0075bf166cc 100644 --- a/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs +++ b/src/tools/clippy/clippy_lints/src/methods/needless_collect.rs @@ -44,11 +44,10 @@ pub(super) fn check<'tcx>( if let ExprKind::MethodCall(name, _, args @ ([] | [_]), _) = parent.kind { let mut app = Applicability::MachineApplicable; - let name = name.ident.as_str(); let collect_ty = cx.typeck_results().expr_ty(collect_expr); - let sugg: String = match name { - "len" => { + let sugg: String = match name.ident.name { + sym::len => { if let Some(adt) = collect_ty.ty_adt_def() && matches!( cx.tcx.get_diagnostic_name(adt.did()), @@ -60,13 +59,13 @@ pub(super) fn check<'tcx>( return; } }, - "is_empty" + sym::is_empty if is_is_empty_sig(cx, parent.hir_id) && iterates_same_ty(cx, cx.typeck_results().expr_ty(iter_expr), collect_ty) => { "next().is_none()".into() }, - "contains" => { + sym::contains => { if is_contains_sig(cx, parent.hir_id, iter_expr) && let Some(arg) = args.first() { diff --git a/src/tools/clippy/clippy_lints/src/methods/open_options.rs b/src/tools/clippy/clippy_lints/src/methods/open_options.rs index bce314e64f0..fd368024177 100644 --- a/src/tools/clippy/clippy_lints/src/methods/open_options.rs +++ b/src/tools/clippy/clippy_lints/src/methods/open_options.rs @@ -1,14 +1,14 @@ use rustc_data_structures::fx::FxHashMap; use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; -use clippy_utils::paths; use clippy_utils::ty::is_type_diagnostic_item; +use clippy_utils::{paths, sym}; use rustc_ast::ast::LitKind; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; use rustc_middle::ty::Ty; +use rustc_span::Span; use rustc_span::source_map::Spanned; -use rustc_span::{Span, sym}; use super::{NONSENSICAL_OPEN_OPTIONS, SUSPICIOUS_OPEN_OPTIONS}; @@ -87,23 +87,23 @@ fn get_open_options( _ => Argument::Unknown, }; - match path.ident.as_str() { - "create" => { + match path.ident.name { + sym::create => { options.push((OpenOption::Create, argument_option, span)); }, - "create_new" => { + sym::create_new => { options.push((OpenOption::CreateNew, argument_option, span)); }, - "append" => { + sym::append => { options.push((OpenOption::Append, argument_option, span)); }, - "truncate" => { + sym::truncate => { options.push((OpenOption::Truncate, argument_option, span)); }, - "read" => { + sym::read => { options.push((OpenOption::Read, argument_option, span)); }, - "write" => { + sym::write => { options.push((OpenOption::Write, argument_option, span)); }, _ => { diff --git a/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs b/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs index 6935ae1f391..6f78d6c6128 100644 --- a/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs +++ b/src/tools/clippy/clippy_lints/src/methods/str_splitn.rs @@ -285,9 +285,9 @@ fn parse_iter_usage<'tcx>( let did = cx.typeck_results().type_dependent_def_id(e.hir_id)?; let iter_id = cx.tcx.get_diagnostic_item(sym::Iterator)?; - match (name.ident.as_str(), args) { - ("next", []) if cx.tcx.trait_of_item(did) == Some(iter_id) => (IterUsageKind::Nth(0), e.span), - ("next_tuple", []) => { + match (name.ident.name, args) { + (sym::next, []) if cx.tcx.trait_of_item(did) == Some(iter_id) => (IterUsageKind::Nth(0), e.span), + (sym::next_tuple, []) => { return if paths::ITERTOOLS_NEXT_TUPLE.matches(cx, did) && let ty::Adt(adt_def, subs) = cx.typeck_results().expr_ty(e).kind() && cx.tcx.is_diagnostic_item(sym::Option, adt_def.did()) @@ -303,7 +303,7 @@ fn parse_iter_usage<'tcx>( None }; }, - ("nth" | "skip", [idx_expr]) if cx.tcx.trait_of_item(did) == Some(iter_id) => { + (sym::nth | sym::skip, [idx_expr]) if cx.tcx.trait_of_item(did) == Some(iter_id) => { if let Some(Constant::Int(idx)) = ConstEvalCtxt::new(cx).eval(idx_expr) { let span = if name.ident.as_str() == "nth" { e.span diff --git a/src/tools/clippy/clippy_lints/src/multiple_bound_locations.rs b/src/tools/clippy/clippy_lints/src/multiple_bound_locations.rs index 4b32ba83b32..741f38f9756 100644 --- a/src/tools/clippy/clippy_lints/src/multiple_bound_locations.rs +++ b/src/tools/clippy/clippy_lints/src/multiple_bound_locations.rs @@ -47,7 +47,7 @@ impl EarlyLintPass for MultipleBoundLocations { for param in &generics.params { if !param.bounds.is_empty() { - generic_params_with_bounds.insert(param.ident.name.as_str(), param.ident.span); + generic_params_with_bounds.insert(param.ident.as_str(), param.ident.span); } } for clause in &generics.where_clause.predicates { @@ -64,7 +64,7 @@ impl EarlyLintPass for MultipleBoundLocations { }, WherePredicateKind::RegionPredicate(pred) => { if !pred.bounds.is_empty() - && let Some(bound_span) = generic_params_with_bounds.get(&pred.lifetime.ident.name.as_str()) + && let Some(bound_span) = generic_params_with_bounds.get(&pred.lifetime.ident.as_str()) { emit_lint(cx, *bound_span, pred.lifetime.ident.span); } diff --git a/src/tools/clippy/clippy_lints/src/non_canonical_impls.rs b/src/tools/clippy/clippy_lints/src/non_canonical_impls.rs index 93865197ec9..04b09276966 100644 --- a/src/tools/clippy/clippy_lints/src/non_canonical_impls.rs +++ b/src/tools/clippy/clippy_lints/src/non_canonical_impls.rs @@ -293,7 +293,14 @@ fn self_cmp_call<'tcx>( ExprKind::Call(path, [_, _]) => path_res(cx, path) .opt_def_id() .is_some_and(|def_id| cx.tcx.is_diagnostic_item(sym::ord_cmp_method, def_id)), - ExprKind::MethodCall(_, _, [_other], ..) => { + ExprKind::MethodCall(_, recv, [_], ..) => { + let ExprKind::Path(path) = recv.kind else { + return false; + }; + if last_path_segment(&path).ident.name != kw::SelfLower { + return false; + } + // We can set this to true here no matter what as if it's a `MethodCall` and goes to the // `else` branch, it must be a method named `cmp` that isn't `Ord::cmp` *needs_fully_qualified = true; diff --git a/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs b/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs index 35caac855cf..4ce6827cac9 100644 --- a/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs +++ b/src/tools/clippy/clippy_lints/src/pathbuf_init_then_push.rs @@ -1,14 +1,14 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::path_to_local_id; use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::is_type_diagnostic_item; +use clippy_utils::{path_to_local_id, sym}; use rustc_ast::{LitKind, StrStyle}; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, LetStmt, PatKind, QPath, Stmt, StmtKind, TyKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; -use rustc_span::{Span, Symbol, sym}; +use rustc_span::{Span, Symbol}; declare_clippy_lint! { /// ### What it does @@ -177,7 +177,7 @@ impl<'tcx> LateLintPass<'tcx> for PathbufThenPush<'tcx> { && let StmtKind::Expr(expr) | StmtKind::Semi(expr) = stmt.kind && let ExprKind::MethodCall(name, self_arg, [arg_expr], _) = expr.kind && path_to_local_id(self_arg, searcher.local_id) - && name.ident.as_str() == "push" + && name.ident.name == sym::push { searcher.err_span = searcher.err_span.to(stmt.span); searcher.arg = Some(*arg_expr); diff --git a/src/tools/clippy/clippy_lints/src/ptr.rs b/src/tools/clippy/clippy_lints/src/ptr.rs index 9149406642d..94cdcf00054 100644 --- a/src/tools/clippy/clippy_lints/src/ptr.rs +++ b/src/tools/clippy/clippy_lints/src/ptr.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then, span_lin use clippy_utils::source::SpanRangeExt; use clippy_utils::sugg::Sugg; use clippy_utils::visitors::contains_unsafe_block; -use clippy_utils::{get_expr_use_or_unification_node, is_lint_allowed, path_def_id, path_to_local, std_or_core}; +use clippy_utils::{get_expr_use_or_unification_node, is_lint_allowed, path_def_id, path_to_local, std_or_core, sym}; use hir::LifetimeKind; use rustc_abi::ExternAbi; use rustc_errors::{Applicability, MultiSpan}; @@ -18,8 +18,8 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, Binder, ClauseKind, ExistentialPredicate, List, PredicateKind, Ty}; use rustc_session::declare_lint_pass; +use rustc_span::Span; use rustc_span::symbol::Symbol; -use rustc_span::{Span, sym}; use rustc_trait_selection::infer::InferCtxtExt as _; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; use std::{fmt, iter}; @@ -268,6 +268,7 @@ impl<'tcx> LateLintPass<'tcx> for Ptr { (false, false, true) if let Some(sugg) = Sugg::hir_opt(cx, l) => sugg.maybe_paren(), _ => return check_ptr_eq(cx, expr, op.node, l, r), }; + let invert = if op.node == BinOpKind::Eq { "" } else { "!" }; span_lint_and_sugg( cx, @@ -275,7 +276,7 @@ impl<'tcx> LateLintPass<'tcx> for Ptr { expr.span, "comparing with null is better expressed by the `.is_null()` method", "try", - format!("{non_null_path_snippet}.is_null()"), + format!("{invert}{non_null_path_snippet}.is_null()",), Applicability::MachineApplicable, ); } @@ -299,7 +300,7 @@ struct PtrArg<'tcx> { emission_id: HirId, span: Span, ty_name: Symbol, - method_renames: &'static [(&'static str, &'static str)], + method_renames: &'static [(Symbol, &'static str)], ref_prefix: RefPrefix, deref_ty: DerefTy<'tcx>, } @@ -385,6 +386,7 @@ impl<'tcx> DerefTy<'tcx> { } } +#[expect(clippy::too_many_lines)] fn check_fn_args<'cx, 'tcx: 'cx>( cx: &'cx LateContext<'tcx>, fn_sig: ty::FnSig<'tcx>, @@ -409,7 +411,7 @@ fn check_fn_args<'cx, 'tcx: 'cx>( let emission_id = params.get(i).map_or(hir_ty.hir_id, |param| param.hir_id); let (method_renames, deref_ty) = match cx.tcx.get_diagnostic_name(adt.did()) { Some(sym::Vec) => ( - [("clone", ".to_owned()")].as_slice(), + [(sym::clone, ".to_owned()")].as_slice(), DerefTy::Slice( name.args.and_then(|args| args.args.first()).and_then(|arg| { if let GenericArg::Type(ty) = arg { @@ -421,10 +423,14 @@ fn check_fn_args<'cx, 'tcx: 'cx>( args.type_at(0), ), ), - _ if Some(adt.did()) == cx.tcx.lang_items().string() => { - ([("clone", ".to_owned()"), ("as_str", "")].as_slice(), DerefTy::Str) - }, - Some(sym::PathBuf) => ([("clone", ".to_path_buf()"), ("as_path", "")].as_slice(), DerefTy::Path), + _ if Some(adt.did()) == cx.tcx.lang_items().string() => ( + [(sym::clone, ".to_owned()"), (sym::as_str, "")].as_slice(), + DerefTy::Str, + ), + Some(sym::PathBuf) => ( + [(sym::clone, ".to_path_buf()"), (sym::as_path, "")].as_slice(), + DerefTy::Path, + ), Some(sym::Cow) if mutability == Mutability::Not => { if let Some((lifetime, ty)) = name.args.and_then(|args| { if let [GenericArg::Lifetime(lifetime), ty] = args.args { @@ -595,7 +601,7 @@ fn check_ptr_arg_usage<'tcx>(cx: &LateContext<'tcx>, body: &Body<'tcx>, args: &[ if let ExprKind::MethodCall(name, receiver, ..) = use_expr.kind && receiver.hir_id == child_id { - let name = name.ident.as_str(); + let name = name.ident.name; // Check if the method can be renamed. if let Some((_, replacement)) = args.method_renames.iter().find(|&&(x, _)| x == name) { diff --git a/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs b/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs index 49b522994fb..6b1dc864fb7 100644 --- a/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs +++ b/src/tools/clippy/clippy_lints/src/read_zero_byte_vec.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::{span_lint_hir, span_lint_hir_and_then}; -use clippy_utils::get_enclosing_block; use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::source::snippet; +use clippy_utils::{get_enclosing_block, sym}; use hir::{Expr, ExprKind, HirId, LetStmt, PatKind, PathSegment, QPath, StmtKind}; use rustc_errors::Applicability; @@ -87,7 +87,7 @@ impl<'tcx> LateLintPass<'tcx> for ReadZeroByteVec { diag.span_suggestion( expr.span, "try", - format!("{}.resize({len}, 0); {}", ident.as_str(), snippet(cx, expr.span, "..")), + format!("{}.resize({len}, 0); {}", ident, snippet(cx, expr.span, "..")), applicability, ); }, @@ -106,7 +106,7 @@ impl<'tcx> LateLintPass<'tcx> for ReadZeroByteVec { "try", format!( "{}.resize({}, 0); {}", - ident.as_str(), + ident, snippet(cx, e.span, ".."), snippet(cx, expr.span, "..") ), @@ -142,8 +142,8 @@ impl<'tcx> Visitor<'tcx> for ReadVecVisitor<'tcx> { if let ExprKind::MethodCall(path, receiver, args, _) = e.kind { let PathSegment { ident, .. } = *path; - match ident.as_str() { - "read" | "read_exact" => { + match ident.name { + sym::read | sym::read_exact => { let [arg] = args else { return }; if let ExprKind::AddrOf(_, hir::Mutability::Mut, inner) = arg.kind && let ExprKind::Path(QPath::Resolved(None, inner_path)) = inner.kind @@ -155,7 +155,7 @@ impl<'tcx> Visitor<'tcx> for ReadVecVisitor<'tcx> { return; } }, - "resize" => { + sym::resize => { // If the Vec is resized, then it's a valid read if let ExprKind::Path(QPath::Resolved(_, inner_path)) = receiver.kind && let Res::Local(res_id) = inner_path.res diff --git a/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs b/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs index 152d7450f5f..51adbbcd58b 100644 --- a/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs +++ b/src/tools/clippy/clippy_lints/src/reserve_after_initialization.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::source::snippet; -use clippy_utils::{is_from_proc_macro, path_to_local_id}; +use clippy_utils::{is_from_proc_macro, path_to_local_id, sym}; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, LetStmt, PatKind, QPath, Stmt, StmtKind}; @@ -126,7 +126,7 @@ impl<'tcx> LateLintPass<'tcx> for ReserveAfterInitialization { if let StmtKind::Expr(expr) | StmtKind::Semi(expr) = stmt.kind && let ExprKind::MethodCall(name, self_arg, [space_hint], _) = expr.kind && path_to_local_id(self_arg, searcher.local_id) - && name.ident.as_str() == "reserve" + && name.ident.name == sym::reserve && !is_from_proc_macro(cx, expr) { self.searcher = Some(VecReserveSearcher { diff --git a/src/tools/clippy/clippy_lints/src/semicolon_block.rs b/src/tools/clippy/clippy_lints/src/semicolon_block.rs index d85f4a8fa01..f6c128d4c52 100644 --- a/src/tools/clippy/clippy_lints/src/semicolon_block.rs +++ b/src/tools/clippy/clippy_lints/src/semicolon_block.rs @@ -143,7 +143,7 @@ impl LateLintPass<'_> for SemicolonBlock { StmtKind::Expr(Expr { kind: ExprKind::Block(block, _), .. - }) if !block.span.from_expansion() => { + }) if !block.span.from_expansion() && stmt.span.contains(block.span) => { let Block { expr: None, stmts: [.., stmt], diff --git a/src/tools/clippy/clippy_lints/src/serde_api.rs b/src/tools/clippy/clippy_lints/src/serde_api.rs index a64b9b22378..b36a5d6d502 100644 --- a/src/tools/clippy/clippy_lints/src/serde_api.rs +++ b/src/tools/clippy/clippy_lints/src/serde_api.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint; -use clippy_utils::paths; +use clippy_utils::{paths, sym}; use rustc_hir::{Impl, Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; @@ -36,9 +36,9 @@ impl<'tcx> LateLintPass<'tcx> for SerdeApi { let mut seen_str = None; let mut seen_string = None; for item in *items { - match item.ident.as_str() { - "visit_str" => seen_str = Some(item.span), - "visit_string" => seen_string = Some(item.span), + match item.ident.name { + sym::visit_str => seen_str = Some(item.span), + sym::visit_string => seen_string = Some(item.span), _ => {}, } } diff --git a/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs b/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs index 3d39386ecf9..442b3250d86 100644 --- a/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs +++ b/src/tools/clippy/clippy_lints/src/std_instead_of_core.rs @@ -1,13 +1,13 @@ use clippy_config::Conf; -use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::is_from_proc_macro; use clippy_utils::msrvs::Msrv; use rustc_attr_data_structures::{StabilityLevel, StableSince}; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::def_id::DefId; -use rustc_hir::{HirId, Path, PathSegment}; -use rustc_lint::{LateContext, LateLintPass, LintContext}; +use rustc_hir::{Block, Body, HirId, Path, PathSegment}; +use rustc_lint::{LateContext, LateLintPass, Lint, LintContext}; use rustc_session::impl_lint_pass; use rustc_span::symbol::kw; use rustc_span::{Span, sym}; @@ -88,24 +88,35 @@ declare_clippy_lint! { } pub struct StdReexports { - // Paths which can be either a module or a macro (e.g. `std::env`) will cause this check to happen - // twice. First for the mod, second for the macro. This is used to avoid the lint reporting for the macro - // when the path could be also be used to access the module. - prev_span: Span, + lint_point: (Span, Option<LintPoint>), msrv: Msrv, } impl StdReexports { pub fn new(conf: &'static Conf) -> Self { Self { - prev_span: Span::default(), + lint_point: Default::default(), msrv: conf.msrv, } } + + fn lint_if_finish(&mut self, cx: &LateContext<'_>, (span, item): (Span, Option<LintPoint>)) { + if span.source_equal(self.lint_point.0) { + return; + } + + if !self.lint_point.0.is_dummy() { + emit_lints(cx, &self.lint_point); + } + + self.lint_point = (span, item); + } } impl_lint_pass!(StdReexports => [STD_INSTEAD_OF_CORE, STD_INSTEAD_OF_ALLOC, ALLOC_INSTEAD_OF_CORE]); +type LintPoint = (&'static Lint, &'static str, &'static str); + impl<'tcx> LateLintPass<'tcx> for StdReexports { fn check_path(&mut self, cx: &LateContext<'tcx>, path: &Path<'tcx>, _: HirId) { if let Res::Def(_, def_id) = path.res @@ -119,7 +130,7 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports { sym::core => (STD_INSTEAD_OF_CORE, "std", "core"), sym::alloc => (STD_INSTEAD_OF_ALLOC, "std", "alloc"), _ => { - self.prev_span = first_segment.ident.span; + self.lint_if_finish(cx, (first_segment.ident.span, None)); return; }, }, @@ -127,32 +138,44 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports { if cx.tcx.crate_name(def_id.krate) == sym::core { (ALLOC_INSTEAD_OF_CORE, "alloc", "core") } else { - self.prev_span = first_segment.ident.span; + self.lint_if_finish(cx, (first_segment.ident.span, None)); return; } }, _ => return, }; - if first_segment.ident.span != self.prev_span { - #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")] - span_lint_and_then( - cx, - lint, - first_segment.ident.span, - format!("used import from `{used_mod}` instead of `{replace_with}`"), - |diag| { - diag.span_suggestion( - first_segment.ident.span, - format!("consider importing the item from `{replace_with}`"), - replace_with.to_string(), - Applicability::MachineApplicable, - ); - }, - ); - self.prev_span = first_segment.ident.span; - } + + self.lint_if_finish(cx, (first_segment.ident.span, Some((lint, used_mod, replace_with)))); } } + + fn check_block_post(&mut self, cx: &LateContext<'tcx>, _: &Block<'tcx>) { + self.lint_if_finish(cx, Default::default()); + } + + fn check_body_post(&mut self, cx: &LateContext<'tcx>, _: &Body<'tcx>) { + self.lint_if_finish(cx, Default::default()); + } + + fn check_crate_post(&mut self, cx: &LateContext<'tcx>) { + self.lint_if_finish(cx, Default::default()); + } +} + +fn emit_lints(cx: &LateContext<'_>, (span, item): &(Span, Option<LintPoint>)) { + let Some((lint, used_mod, replace_with)) = item else { + return; + }; + + span_lint_and_sugg( + cx, + lint, + *span, + format!("used import from `{used_mod}` instead of `{replace_with}`"), + format!("consider importing the item from `{replace_with}`"), + (*replace_with).to_string(), + Applicability::MachineApplicable, + ); } /// Returns the first named segment of a [`Path`]. diff --git a/src/tools/clippy/clippy_lints/src/strings.rs b/src/tools/clippy/clippy_lints/src/strings.rs index 73a9fe71e00..1cda6f596f4 100644 --- a/src/tools/clippy/clippy_lints/src/strings.rs +++ b/src/tools/clippy/clippy_lints/src/strings.rs @@ -560,7 +560,7 @@ impl<'tcx> LateLintPass<'tcx> for TrimSplitWhitespace { && let Some(split_ws_def_id) = tyckres.type_dependent_def_id(expr.hir_id) && cx.tcx.is_diagnostic_item(sym::str_split_whitespace, split_ws_def_id) && let ExprKind::MethodCall(path, _trim_recv, [], trim_span) = split_recv.kind - && let trim_fn_name @ ("trim" | "trim_start" | "trim_end") = path.ident.name.as_str() + && let trim_fn_name @ (sym::trim | sym::trim_start | sym::trim_end) = path.ident.name && let Some(trim_def_id) = tyckres.type_dependent_def_id(split_recv.hir_id) && is_one_of_trim_diagnostic_items(cx, trim_def_id) { diff --git a/src/tools/clippy/clippy_lints/src/swap.rs b/src/tools/clippy/clippy_lints/src/swap.rs index e3ecd6508bf..5ecbb56925e 100644 --- a/src/tools/clippy/clippy_lints/src/swap.rs +++ b/src/tools/clippy/clippy_lints/src/swap.rs @@ -3,7 +3,7 @@ use clippy_utils::source::{snippet_indent, snippet_with_context}; use clippy_utils::sugg::Sugg; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::{can_mut_borrow_both, eq_expr_value, is_in_const_context, std_or_core}; +use clippy_utils::{can_mut_borrow_both, eq_expr_value, is_in_const_context, path_to_local, std_or_core}; use itertools::Itertools; use rustc_data_structures::fx::FxIndexSet; @@ -350,12 +350,21 @@ impl<'tcx> IndexBinding<'_, 'tcx> { format!("{lhs_snippet}{rhs_snippet}") }, ExprKind::Path(QPath::Resolved(_, path)) => { - let init = self.cx.expr_or_init(expr); - let Some(first_segment) = path.segments.first() else { return String::new(); }; - if !self.suggest_span.contains(init.span) || !self.is_used_other_than_swapping(first_segment.ident) { + + let init = self.cx.expr_or_init(expr); + + // We skip suggesting a variable binding in any of these cases: + // - Variable initialization is outside the suggestion span + // - Variable declaration is outside the suggestion span + // - Variable is not used as an index or elsewhere later + if !self.suggest_span.contains(init.span) + || path_to_local(expr) + .is_some_and(|hir_id| !self.suggest_span.contains(self.cx.tcx.hir_span(hir_id))) + || !self.is_used_other_than_swapping(first_segment.ident) + { return String::new(); } diff --git a/src/tools/clippy/clippy_lints/src/transmute/missing_transmute_annotations.rs b/src/tools/clippy/clippy_lints/src/transmute/missing_transmute_annotations.rs index 96286fcf73d..08f36a2ed5d 100644 --- a/src/tools/clippy/clippy_lints/src/transmute/missing_transmute_annotations.rs +++ b/src/tools/clippy/clippy_lints/src/transmute/missing_transmute_annotations.rs @@ -74,7 +74,7 @@ pub(super) fn check<'tcx>( last.ident.span.with_hi(path.span.hi()), "transmute used without annotations", "consider adding missing annotations", - format!("{}::<{from_ty}, {to_ty}>", last.ident.as_str()), + format!("{}::<{from_ty}, {to_ty}>", last.ident), Applicability::MaybeIncorrect, ); true diff --git a/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs b/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs index 004ad03e708..4b23367645e 100644 --- a/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs +++ b/src/tools/clippy/clippy_lints/src/types/borrowed_box.rs @@ -33,7 +33,7 @@ pub(super) fn check(cx: &LateContext<'_>, hir_ty: &hir::Ty<'_>, lt: &Lifetime, m let ltopt = if lt.is_anonymous() { String::new() } else { - format!("{} ", lt.ident.as_str()) + format!("{} ", lt.ident) }; if mut_ty.mutbl == Mutability::Mut { diff --git a/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs b/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs index 019ae16ca85..ae6d8a1c1aa 100644 --- a/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs +++ b/src/tools/clippy/clippy_lints/src/unit_types/unit_arg.rs @@ -1,9 +1,14 @@ +use std::iter; + use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::is_from_proc_macro; -use clippy_utils::source::{SourceText, SpanRangeExt, indent_of, reindent_multiline}; +use clippy_utils::source::{SpanRangeExt, indent_of, reindent_multiline}; +use clippy_utils::sugg::Sugg; +use clippy_utils::ty::expr_type_is_certain; +use clippy_utils::{is_expr_default, is_from_proc_macro}; use rustc_errors::Applicability; use rustc_hir::{Block, Expr, ExprKind, MatchSource, Node, StmtKind}; use rustc_lint::LateContext; +use rustc_span::SyntaxContext; use super::{UNIT_ARG, utils}; @@ -59,7 +64,7 @@ fn is_questionmark_desugar_marked_call(expr: &Expr<'_>) -> bool { } } -fn lint_unit_args(cx: &LateContext<'_>, expr: &Expr<'_>, args_to_recover: &[&Expr<'_>]) { +fn lint_unit_args<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, args_to_recover: &[&'tcx Expr<'tcx>]) { let mut applicability = Applicability::MachineApplicable; let (singular, plural) = if args_to_recover.len() > 1 { ("", "s") @@ -100,34 +105,41 @@ fn lint_unit_args(cx: &LateContext<'_>, expr: &Expr<'_>, args_to_recover: &[&Exp let arg_snippets: Vec<_> = args_to_recover .iter() - .filter_map(|arg| arg.span.get_source_text(cx)) + // If the argument is from an expansion and is a `Default::default()`, we skip it + .filter(|arg| !arg.span.from_expansion() || !is_expr_default_nested(cx, arg)) + .filter_map(|arg| get_expr_snippet(cx, arg)) .collect(); - let arg_snippets_without_empty_blocks: Vec<_> = args_to_recover + + // If the argument is an empty block or `Default::default()`, we can replace it with `()`. + let arg_snippets_without_redundant_exprs: Vec<_> = args_to_recover .iter() - .filter(|arg| !is_empty_block(arg)) - .filter_map(|arg| arg.span.get_source_text(cx)) + .filter(|arg| !is_expr_default_nested(cx, arg) && (arg.span.from_expansion() || !is_empty_block(arg))) + .filter_map(|arg| get_expr_snippet_with_type_certainty(cx, arg)) .collect(); if let Some(call_snippet) = expr.span.get_source_text(cx) { - let sugg = fmt_stmts_and_call( - cx, - expr, - &call_snippet, - &arg_snippets, - &arg_snippets_without_empty_blocks, - ); - - if arg_snippets_without_empty_blocks.is_empty() { + if arg_snippets_without_redundant_exprs.is_empty() + && let suggestions = args_to_recover + .iter() + .filter(|arg| !arg.span.from_expansion() || !is_expr_default_nested(cx, arg)) + .map(|arg| (arg.span.parent_callsite().unwrap_or(arg.span), "()".to_string())) + .collect::<Vec<_>>() + && !suggestions.is_empty() + { db.multipart_suggestion( format!("use {singular}unit literal{plural} instead"), - args_to_recover - .iter() - .map(|arg| (arg.span, "()".to_string())) - .collect::<Vec<_>>(), + suggestions, applicability, ); } else { - let plural = arg_snippets_without_empty_blocks.len() > 1; + let plural = arg_snippets_without_redundant_exprs.len() > 1; + let sugg = fmt_stmts_and_call( + cx, + expr, + &call_snippet, + arg_snippets, + arg_snippets_without_redundant_exprs, + ); let empty_or_s = if plural { "s" } else { "" }; let it_or_them = if plural { "them" } else { "it" }; db.span_suggestion( @@ -144,6 +156,55 @@ fn lint_unit_args(cx: &LateContext<'_>, expr: &Expr<'_>, args_to_recover: &[&Exp ); } +fn is_expr_default_nested<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> bool { + is_expr_default(cx, expr) + || matches!(expr.kind, ExprKind::Block(block, _) + if block.expr.is_some() && is_expr_default_nested(cx, block.expr.unwrap())) +} + +enum MaybeTypeUncertain<'tcx> { + Certain(Sugg<'tcx>), + Uncertain(Sugg<'tcx>), +} + +impl From<MaybeTypeUncertain<'_>> for String { + fn from(value: MaybeTypeUncertain<'_>) -> Self { + match value { + MaybeTypeUncertain::Certain(sugg) => sugg.to_string(), + MaybeTypeUncertain::Uncertain(sugg) => format!("let _: () = {sugg}"), + } + } +} + +fn get_expr_snippet<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Option<Sugg<'tcx>> { + let mut app = Applicability::MachineApplicable; + let snip = Sugg::hir_with_context(cx, expr, SyntaxContext::root(), "..", &mut app); + if app != Applicability::MachineApplicable { + return None; + } + + Some(snip) +} + +fn get_expr_snippet_with_type_certainty<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, +) -> Option<MaybeTypeUncertain<'tcx>> { + get_expr_snippet(cx, expr).map(|snip| { + // If the type of the expression is certain, we can use it directly. + // Otherwise, we wrap it in a `let _: () = ...` to ensure the type is correct. + if !expr_type_is_certain(cx, expr) && !is_block_with_no_expr(expr) { + MaybeTypeUncertain::Uncertain(snip) + } else { + MaybeTypeUncertain::Certain(snip) + } + }) +} + +fn is_block_with_no_expr(expr: &Expr<'_>) -> bool { + matches!(expr.kind, ExprKind::Block(Block { expr: None, .. }, _)) +} + fn is_empty_block(expr: &Expr<'_>) -> bool { matches!( expr.kind, @@ -162,23 +223,20 @@ fn fmt_stmts_and_call( cx: &LateContext<'_>, call_expr: &Expr<'_>, call_snippet: &str, - args_snippets: &[SourceText], - non_empty_block_args_snippets: &[SourceText], + args_snippets: Vec<Sugg<'_>>, + non_empty_block_args_snippets: Vec<MaybeTypeUncertain<'_>>, ) -> String { let call_expr_indent = indent_of(cx, call_expr.span).unwrap_or(0); - let call_snippet_with_replacements = args_snippets - .iter() - .fold(call_snippet.to_owned(), |acc, arg| acc.replacen(arg.as_ref(), "()", 1)); + let call_snippet_with_replacements = args_snippets.into_iter().fold(call_snippet.to_owned(), |acc, arg| { + acc.replacen(&arg.to_string(), "()", 1) + }); - let mut stmts_and_call = non_empty_block_args_snippets - .iter() - .map(|it| it.as_ref().to_owned()) - .collect::<Vec<_>>(); - stmts_and_call.push(call_snippet_with_replacements); - stmts_and_call = stmts_and_call + let stmts_and_call = non_empty_block_args_snippets .into_iter() + .map(Into::into) + .chain(iter::once(call_snippet_with_replacements)) .map(|v| reindent_multiline(&v, true, Some(call_expr_indent))) - .collect(); + .collect::<Vec<_>>(); let mut stmts_and_call_snippet = stmts_and_call.join(&format!("{}{}", ";\n", " ".repeat(call_expr_indent))); // expr is not in a block statement or result expression position, wrap in a block diff --git a/src/tools/clippy/clippy_lints/src/unused_io_amount.rs b/src/tools/clippy/clippy_lints/src/unused_io_amount.rs index 5e1cb9e54f5..12cc1093899 100644 --- a/src/tools/clippy/clippy_lints/src/unused_io_amount.rs +++ b/src/tools/clippy/clippy_lints/src/unused_io_amount.rs @@ -1,11 +1,11 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::macros::{is_panic, root_macro_call_first_node}; -use clippy_utils::{is_res_lang_ctor, paths, peel_blocks}; +use clippy_utils::{is_res_lang_ctor, paths, peel_blocks, sym}; use hir::{ExprKind, HirId, PatKind}; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{Span, sym}; +use rustc_span::Span; declare_clippy_lint! { /// ### What it does @@ -232,8 +232,16 @@ fn is_unreachable_or_panic(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> bool { fn unpack_call_chain<'a>(mut expr: &'a hir::Expr<'a>) -> &'a hir::Expr<'a> { while let ExprKind::MethodCall(path, receiver, ..) = expr.kind { if matches!( - path.ident.as_str(), - "unwrap" | "expect" | "unwrap_or" | "unwrap_or_else" | "ok" | "is_ok" | "is_err" | "or_else" | "or" + path.ident.name, + sym::unwrap + | sym::expect + | sym::unwrap_or + | sym::unwrap_or_else + | sym::ok + | sym::is_ok + | sym::is_err + | sym::or_else + | sym::or ) { expr = receiver; } else { diff --git a/src/tools/clippy/clippy_lints/src/unused_result_ok.rs b/src/tools/clippy/clippy_lints/src/unused_result_ok.rs index 958f19d1833..f5ed10fb760 100644 --- a/src/tools/clippy/clippy_lints/src/unused_result_ok.rs +++ b/src/tools/clippy/clippy_lints/src/unused_result_ok.rs @@ -1,11 +1,11 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; +use clippy_utils::sym; use clippy_utils::ty::is_type_diagnostic_item; use rustc_errors::Applicability; use rustc_hir::{ExprKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::declare_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -36,7 +36,7 @@ impl LateLintPass<'_> for UnusedResultOk { fn check_stmt(&mut self, cx: &LateContext<'_>, stmt: &Stmt<'_>) { if let StmtKind::Semi(expr) = stmt.kind && let ExprKind::MethodCall(ok_path, recv, [], ..) = expr.kind //check is expr.ok() has type Result<T,E>.ok(, _) - && ok_path.ident.as_str() == "ok" + && ok_path.ident.name == sym::ok && is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(recv), sym::Result) && !stmt.span.in_external_macro(cx.sess().source_map()) { diff --git a/src/tools/clippy/clippy_lints/src/unused_unit.rs b/src/tools/clippy/clippy_lints/src/unused_unit.rs index 9859ddfdf7b..3811f0fe6b5 100644 --- a/src/tools/clippy/clippy_lints/src/unused_unit.rs +++ b/src/tools/clippy/clippy_lints/src/unused_unit.rs @@ -100,7 +100,7 @@ impl<'tcx> LateLintPass<'tcx> for UnusedUnit { let segments = &poly.trait_ref.path.segments; if segments.len() == 1 - && ["Fn", "FnMut", "FnOnce"].contains(&segments[0].ident.name.as_str()) + && matches!(segments[0].ident.name, sym::Fn | sym::FnMut | sym::FnOnce) && let Some(args) = segments[0].args && args.parenthesized == GenericArgsParentheses::ParenSugar && let constraints = &args.constraints @@ -109,6 +109,7 @@ impl<'tcx> LateLintPass<'tcx> for UnusedUnit { && let AssocItemConstraintKind::Equality { term: Term::Ty(hir_ty) } = constraints[0].kind && args.span_ext.hi() != poly.span.hi() && !hir_ty.span.from_expansion() + && args.span_ext.hi() != hir_ty.span.hi() && is_unit_ty(hir_ty) { lint_unneeded_unit_return(cx, hir_ty.span, poly.span); diff --git a/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs b/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs index 3c23662e9d1..8d873536295 100644 --- a/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs +++ b/src/tools/clippy/clippy_lints/src/vec_init_then_push.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::source::snippet; use clippy_utils::visitors::for_each_local_use_after_expr; -use clippy_utils::{get_parent_expr, path_to_local_id}; +use clippy_utils::{get_parent_expr, path_to_local_id, sym}; use core::ops::ControlFlow; use rustc_errors::Applicability; use rustc_hir::def::Res; @@ -202,7 +202,7 @@ impl<'tcx> LateLintPass<'tcx> for VecInitThenPush { if let StmtKind::Expr(expr) | StmtKind::Semi(expr) = stmt.kind && let ExprKind::MethodCall(name, self_arg, [_], _) = expr.kind && path_to_local_id(self_arg, searcher.local_id) - && name.ident.as_str() == "push" + && name.ident.name == sym::push { self.searcher = Some(VecPushSearcher { err_span: searcher.err_span.to(stmt.span), diff --git a/src/tools/clippy/clippy_lints/src/wildcard_imports.rs b/src/tools/clippy/clippy_lints/src/wildcard_imports.rs index 467811c586b..d9dda6eadb2 100644 --- a/src/tools/clippy/clippy_lints/src/wildcard_imports.rs +++ b/src/tools/clippy/clippy_lints/src/wildcard_imports.rs @@ -9,8 +9,8 @@ use rustc_hir::{Item, ItemKind, PathSegment, UseKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty; use rustc_session::impl_lint_pass; +use rustc_span::BytePos; use rustc_span::symbol::kw; -use rustc_span::{BytePos, sym}; declare_clippy_lint! { /// ### What it does @@ -193,9 +193,7 @@ impl WildcardImports { // Allow "...prelude::..::*" imports. // Many crates have a prelude, and it is imported as a glob by design. fn is_prelude_import(segments: &[PathSegment<'_>]) -> bool { - segments - .iter() - .any(|ps| ps.ident.as_str().contains(sym::prelude.as_str())) + segments.iter().any(|ps| ps.ident.as_str().contains("prelude")) } // Allow "super::*" imports in tests. diff --git a/src/tools/clippy/clippy_lints/src/write.rs b/src/tools/clippy/clippy_lints/src/write.rs index a8758b65c91..d9a007635ca 100644 --- a/src/tools/clippy/clippy_lints/src/write.rs +++ b/src/tools/clippy/clippy_lints/src/write.rs @@ -5,8 +5,8 @@ use clippy_utils::source::{SpanRangeExt, expand_past_previous_comma}; use clippy_utils::{is_in_test, sym}; use rustc_ast::token::LitKind; use rustc_ast::{ - FormatArgPosition, FormatArgPositionKind, FormatArgs, FormatArgsPiece, FormatOptions, FormatPlaceholder, - FormatTrait, + FormatArgPosition, FormatArgPositionKind, FormatArgs, FormatArgsPiece, FormatCount, FormatOptions, + FormatPlaceholder, FormatTrait, }; use rustc_errors::Applicability; use rustc_hir::{Expr, Impl, Item, ItemKind}; @@ -556,12 +556,7 @@ fn check_literal(cx: &LateContext<'_>, format_args: &FormatArgs, name: &str) { // Decrement the index of the remaining by the number of replaced positional arguments if !suggestion.is_empty() { for piece in &format_args.template { - if let Some((span, index)) = positional_arg_piece_span(piece) - && suggestion.iter().all(|(s, _)| *s != span) - { - let decrement = replaced_position.iter().filter(|i| **i < index).count(); - suggestion.push((span, format!("{{{}}}", index.saturating_sub(decrement)))); - } + relocalize_format_args_indexes(piece, &mut suggestion, &replaced_position); } } @@ -574,7 +569,7 @@ fn check_literal(cx: &LateContext<'_>, format_args: &FormatArgs, name: &str) { } } -/// Extract Span and its index from the given `piece`, iff it's positional argument. +/// Extract Span and its index from the given `piece`, if it's positional argument. fn positional_arg_piece_span(piece: &FormatArgsPiece) -> Option<(Span, usize)> { match piece { FormatArgsPiece::Placeholder(FormatPlaceholder { @@ -591,6 +586,57 @@ fn positional_arg_piece_span(piece: &FormatArgsPiece) -> Option<(Span, usize)> { } } +/// Relocalizes the indexes of positional arguments in the format string +fn relocalize_format_args_indexes( + piece: &FormatArgsPiece, + suggestion: &mut Vec<(Span, String)>, + replaced_position: &[usize], +) { + if let FormatArgsPiece::Placeholder(FormatPlaceholder { + argument: + FormatArgPosition { + index: Ok(index), + // Only consider positional arguments + kind: FormatArgPositionKind::Number, + span: Some(span), + }, + format_options, + .. + }) = piece + { + if suggestion.iter().any(|(s, _)| s.overlaps(*span)) { + // If the span is already in the suggestion, we don't need to process it again + return; + } + + // lambda to get the decremented index based on the replaced positions + let decremented_index = |index: usize| -> usize { + let decrement = replaced_position.iter().filter(|&&i| i < index).count(); + index - decrement + }; + + suggestion.push((*span, decremented_index(*index).to_string())); + + // If there are format options, we need to handle them as well + if *format_options != FormatOptions::default() { + // lambda to process width and precision format counts and add them to the suggestion + let mut process_format_count = |count: &Option<FormatCount>, formatter: &dyn Fn(usize) -> String| { + if let Some(FormatCount::Argument(FormatArgPosition { + index: Ok(format_arg_index), + kind: FormatArgPositionKind::Number, + span: Some(format_arg_span), + })) = count + { + suggestion.push((*format_arg_span, formatter(decremented_index(*format_arg_index)))); + } + }; + + process_format_count(&format_options.width, &|index: usize| format!("{index}$")); + process_format_count(&format_options.precision, &|index: usize| format!(".{index}$")); + } + } +} + /// Removes the raw marker, `#`s and quotes from a str, and returns if the literal is raw /// /// `r#"a"#` -> (`a`, true) diff --git a/src/tools/clippy/clippy_lints/src/zombie_processes.rs b/src/tools/clippy/clippy_lints/src/zombie_processes.rs index 09f1084fe70..6ab94a52210 100644 --- a/src/tools/clippy/clippy_lints/src/zombie_processes.rs +++ b/src/tools/clippy/clippy_lints/src/zombie_processes.rs @@ -5,7 +5,7 @@ use rustc_ast::Mutability; use rustc_ast::visit::visit_opt; use rustc_errors::Applicability; use rustc_hir::def_id::LocalDefId; -use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_local}; +use rustc_hir::intravisit::{Visitor, walk_block, walk_expr}; use rustc_hir::{Expr, ExprKind, HirId, LetStmt, Node, PatKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; @@ -69,8 +69,9 @@ impl<'tcx> LateLintPass<'tcx> for ZombieProcesses { let mut vis = WaitFinder { cx, local_id, + create_id: expr.hir_id, body_id: cx.tcx.hir_enclosing_body_owner(expr.hir_id), - state: VisitorState::WalkUpToLocal, + state: VisitorState::WalkUpToCreate, early_return: None, missing_wait_branch: None, }; @@ -131,6 +132,7 @@ struct MaybeWait(Span); struct WaitFinder<'a, 'tcx> { cx: &'a LateContext<'tcx>, local_id: HirId, + create_id: HirId, body_id: LocalDefId, state: VisitorState, early_return: Option<Span>, @@ -141,8 +143,8 @@ struct WaitFinder<'a, 'tcx> { #[derive(PartialEq)] enum VisitorState { - WalkUpToLocal, - LocalFound, + WalkUpToCreate, + CreateFound, } #[derive(Copy, Clone)] @@ -155,19 +157,13 @@ impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; type Result = ControlFlow<MaybeWait>; - fn visit_local(&mut self, l: &'tcx LetStmt<'tcx>) -> Self::Result { - if self.state == VisitorState::WalkUpToLocal - && let PatKind::Binding(_, pat_id, ..) = l.pat.kind - && self.local_id == pat_id - { - self.state = VisitorState::LocalFound; + fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) -> Self::Result { + if ex.hir_id == self.create_id { + self.state = VisitorState::CreateFound; + return Continue(()); } - walk_local(self, l) - } - - fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) -> Self::Result { - if self.state != VisitorState::LocalFound { + if self.state != VisitorState::CreateFound { return walk_expr(self, ex); } diff --git a/src/tools/clippy/clippy_lints_internal/src/almost_standard_lint_formulation.rs b/src/tools/clippy/clippy_lints_internal/src/almost_standard_lint_formulation.rs index 311f76fee6b..7eeec84720f 100644 --- a/src/tools/clippy/clippy_lints_internal/src/almost_standard_lint_formulation.rs +++ b/src/tools/clippy/clippy_lints_internal/src/almost_standard_lint_formulation.rs @@ -45,7 +45,7 @@ impl AlmostStandardFormulation { impl<'tcx> LateLintPass<'tcx> for AlmostStandardFormulation { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) { let mut check_next = false; - if let ItemKind::Static(_, ty, Mutability::Not, _) = item.kind { + if let ItemKind::Static(Mutability::Not, _, ty, _) = item.kind { let lines = cx .tcx .hir_attrs(item.hir_id()) diff --git a/src/tools/clippy/clippy_lints_internal/src/lint_without_lint_pass.rs b/src/tools/clippy/clippy_lints_internal/src/lint_without_lint_pass.rs index 0edeef3ab85..45a866030b2 100644 --- a/src/tools/clippy/clippy_lints_internal/src/lint_without_lint_pass.rs +++ b/src/tools/clippy/clippy_lints_internal/src/lint_without_lint_pass.rs @@ -105,7 +105,7 @@ impl_lint_pass!(LintWithoutLintPass => [ impl<'tcx> LateLintPass<'tcx> for LintWithoutLintPass { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) { - if let hir::ItemKind::Static(ident, ty, Mutability::Not, body_id) = item.kind { + if let hir::ItemKind::Static(Mutability::Not, ident, ty, body_id) = item.kind { if is_lint_ref_type(cx, ty) { check_invalid_clippy_version_attribute(cx, item); diff --git a/src/tools/clippy/clippy_utils/README.md b/src/tools/clippy/clippy_utils/README.md index efbacbd72db..1aa16e3943c 100644 --- a/src/tools/clippy/clippy_utils/README.md +++ b/src/tools/clippy/clippy_utils/README.md @@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain: <!-- begin autogenerated nightly --> ``` -nightly-2025-05-31 +nightly-2025-06-12 ``` <!-- end autogenerated nightly --> diff --git a/src/tools/clippy/clippy_utils/src/lib.rs b/src/tools/clippy/clippy_utils/src/lib.rs index f6ef638e618..c7a2375c8df 100644 --- a/src/tools/clippy/clippy_utils/src/lib.rs +++ b/src/tools/clippy/clippy_utils/src/lib.rs @@ -1793,10 +1793,9 @@ pub fn in_automatically_derived(tcx: TyCtxt<'_>, id: HirId) -> bool { /// Checks if the given `DefId` matches the `libc` item. pub fn match_libc_symbol(cx: &LateContext<'_>, did: DefId, name: Symbol) -> bool { - let path = cx.get_def_path(did); // libc is meant to be used as a flat list of names, but they're all actually defined in different // modules based on the target platform. Ignore everything but crate name and the item name. - path.first().is_some_and(|s| *s == sym::libc) && path.last().copied() == Some(name) + cx.tcx.crate_name(did.krate) == sym::libc && cx.tcx.def_path_str(did).ends_with(name.as_str()) } /// Returns the list of condition expressions and the list of blocks in a @@ -3473,3 +3472,15 @@ pub fn desugar_await<'tcx>(expr: &'tcx Expr<'_>) -> Option<&'tcx Expr<'tcx>> { None } } + +/// Checks if the given expression is a call to `Default::default()`. +pub fn is_expr_default<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> bool { + if let ExprKind::Call(fn_expr, []) = &expr.kind + && let ExprKind::Path(qpath) = &fn_expr.kind + && let Res::Def(_, def_id) = cx.qpath_res(qpath, fn_expr.hir_id) + { + cx.tcx.is_diagnostic_item(sym::default_fn, def_id) + } else { + false + } +} diff --git a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs index 8e16f943e9f..e629012b187 100644 --- a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs +++ b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs @@ -18,7 +18,7 @@ use rustc_middle::mir::{ }; use rustc_middle::traits::{BuiltinImplSource, ImplSource, ObligationCause}; use rustc_middle::ty::adjustment::PointerCoercion; -use rustc_middle::ty::{self, GenericArgKind, TraitRef, Ty, TyCtxt}; +use rustc_middle::ty::{self, GenericArgKind, Instance, TraitRef, Ty, TyCtxt}; use rustc_span::Span; use rustc_span::symbol::sym; use rustc_trait_selection::traits::{ObligationCtxt, SelectionContext}; @@ -349,7 +349,15 @@ fn check_terminator<'tcx>( } | TerminatorKind::TailCall { func, args, fn_span: _ } => { let fn_ty = func.ty(body, cx.tcx); - if let ty::FnDef(fn_def_id, _) = *fn_ty.kind() { + if let ty::FnDef(fn_def_id, fn_substs) = fn_ty.kind() { + // FIXME: when analyzing a function with generic parameters, we may not have enough information to + // resolve to an instance. However, we could check if a host effect predicate can guarantee that + // this can be made a `const` call. + let fn_def_id = match Instance::try_resolve(cx.tcx, cx.typing_env(), *fn_def_id, fn_substs) { + Ok(Some(fn_inst)) => fn_inst.def_id(), + Ok(None) => return Err((span, format!("cannot resolve instance for {func:?}").into())), + Err(_) => return Err((span, format!("error during instance resolution of {func:?}").into())), + }; if !is_stable_const_fn(cx, fn_def_id, msrv) { return Err(( span, diff --git a/src/tools/clippy/clippy_utils/src/sym.rs b/src/tools/clippy/clippy_utils/src/sym.rs index f417530be36..3b58dba5628 100644 --- a/src/tools/clippy/clippy_utils/src/sym.rs +++ b/src/tools/clippy/clippy_utils/src/sym.rs @@ -76,7 +76,6 @@ generate! { Visitor, Weak, abs, - align_of, ambiguous_glob_reexports, append, arg, @@ -84,6 +83,7 @@ generate! { as_deref, as_deref_mut, as_mut, + as_path, assert_failed, author, borrow, @@ -121,6 +121,8 @@ generate! { copy_to, copy_to_nonoverlapping, count_ones, + create, + create_new, cycle, cyclomatic_complexity, de, @@ -132,7 +134,6 @@ generate! { enum_glob_use, enumerate, err, - error, exp, expect_err, expn_data, @@ -150,8 +151,11 @@ generate! { floor_char_boundary, fold, for_each, + from_be_bytes, from_bytes_with_nul, from_bytes_with_nul_unchecked, + from_le_bytes, + from_ne_bytes, from_ptr, from_raw, from_ref, @@ -184,8 +188,10 @@ generate! { is_err, is_file, is_none, + is_none_or, is_ok, is_some, + is_some_and, isqrt, itertools, join, @@ -252,9 +258,12 @@ generate! { powi, product, push, + read, + read_exact, read_line, read_to_end, read_to_string, + read_unaligned, redundant_pub_crate, regex, rem_euclid, @@ -323,16 +332,22 @@ generate! { then_some, to_ascii_lowercase, to_ascii_uppercase, + to_be_bytes, to_digit, + to_le_bytes, to_lowercase, + to_ne_bytes, to_os_string, to_owned, to_path_buf, to_uppercase, tokio, trim, + trim_end, trim_end_matches, + trim_start, trim_start_matches, + truncate, unreachable_pub, unsafe_removed_from_name, unused, @@ -347,12 +362,15 @@ generate! { unwrap_unchecked, unzip, utils, + visit_str, + visit_string, wake, warnings, wildcard_imports, with_capacity, wrapping_offset, write, + write_unaligned, writeln, zip, } diff --git a/src/tools/clippy/clippy_utils/src/ty/mod.rs b/src/tools/clippy/clippy_utils/src/ty/mod.rs index 61e70b3fa0b..32a992ccc2d 100644 --- a/src/tools/clippy/clippy_utils/src/ty/mod.rs +++ b/src/tools/clippy/clippy_utils/src/ty/mod.rs @@ -20,7 +20,7 @@ use rustc_middle::traits::EvaluationResult; use rustc_middle::ty::layout::ValidityRequirement; use rustc_middle::ty::{ self, AdtDef, AliasTy, AssocItem, AssocTag, Binder, BoundRegion, FnSig, GenericArg, GenericArgKind, GenericArgsRef, - GenericParamDefKind, IntTy, Region, RegionKind, TraitRef, Ty, TyCtxt, TypeFoldable, TypeSuperVisitable, + GenericParamDefKind, IntTy, Region, RegionKind, TraitRef, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitableExt, TypeVisitor, UintTy, Upcast, VariantDef, VariantDiscr, }; use rustc_span::symbol::Ident; @@ -853,7 +853,7 @@ pub fn for_each_top_level_late_bound_region<B>( ControlFlow::Continue(()) } } - fn visit_binder<T: TypeFoldable<TyCtxt<'tcx>>>(&mut self, t: &Binder<'tcx, T>) -> Self::Result { + fn visit_binder<T: TypeVisitable<TyCtxt<'tcx>>>(&mut self, t: &Binder<'tcx, T>) -> Self::Result { self.index += 1; let res = t.super_visit_with(self); self.index -= 1; @@ -1137,21 +1137,38 @@ impl<'tcx> InteriorMut<'tcx> { /// Check if given type has interior mutability such as [`std::cell::Cell`] or /// [`std::cell::RefCell`] etc. and if it does, returns a chain of types that causes - /// this type to be interior mutable + /// this type to be interior mutable. False negatives may be expected for infinitely recursive + /// types, and `None` will be returned there. pub fn interior_mut_ty_chain(&mut self, cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<&'tcx ty::List<Ty<'tcx>>> { + self.interior_mut_ty_chain_inner(cx, ty, 0) + } + + fn interior_mut_ty_chain_inner( + &mut self, + cx: &LateContext<'tcx>, + ty: Ty<'tcx>, + depth: usize, + ) -> Option<&'tcx ty::List<Ty<'tcx>>> { + if !cx.tcx.recursion_limit().value_within_limit(depth) { + return None; + } + match self.tys.entry(ty) { Entry::Occupied(o) => return *o.get(), // Temporarily insert a `None` to break cycles Entry::Vacant(v) => v.insert(None), }; + let depth = depth + 1; let chain = match *ty.kind() { - ty::RawPtr(inner_ty, _) if !self.ignore_pointers => self.interior_mut_ty_chain(cx, inner_ty), - ty::Ref(_, inner_ty, _) | ty::Slice(inner_ty) => self.interior_mut_ty_chain(cx, inner_ty), + ty::RawPtr(inner_ty, _) if !self.ignore_pointers => self.interior_mut_ty_chain_inner(cx, inner_ty, depth), + ty::Ref(_, inner_ty, _) | ty::Slice(inner_ty) => self.interior_mut_ty_chain_inner(cx, inner_ty, depth), ty::Array(inner_ty, size) if size.try_to_target_usize(cx.tcx) != Some(0) => { - self.interior_mut_ty_chain(cx, inner_ty) + self.interior_mut_ty_chain_inner(cx, inner_ty, depth) }, - ty::Tuple(fields) => fields.iter().find_map(|ty| self.interior_mut_ty_chain(cx, ty)), + ty::Tuple(fields) => fields + .iter() + .find_map(|ty| self.interior_mut_ty_chain_inner(cx, ty, depth)), ty::Adt(def, _) if def.is_unsafe_cell() => Some(ty::List::empty()), ty::Adt(def, args) => { let is_std_collection = matches!( @@ -1171,16 +1188,17 @@ impl<'tcx> InteriorMut<'tcx> { if is_std_collection || def.is_box() { // Include the types from std collections that are behind pointers internally - args.types().find_map(|ty| self.interior_mut_ty_chain(cx, ty)) + args.types() + .find_map(|ty| self.interior_mut_ty_chain_inner(cx, ty, depth)) } else if self.ignored_def_ids.contains(&def.did()) || def.is_phantom_data() { None } else { def.all_fields() - .find_map(|f| self.interior_mut_ty_chain(cx, f.ty(cx.tcx, args))) + .find_map(|f| self.interior_mut_ty_chain_inner(cx, f.ty(cx.tcx, args), depth)) } }, ty::Alias(ty::Projection, _) => match cx.tcx.try_normalize_erasing_regions(cx.typing_env(), ty) { - Ok(normalized_ty) if ty != normalized_ty => self.interior_mut_ty_chain(cx, normalized_ty), + Ok(normalized_ty) if ty != normalized_ty => self.interior_mut_ty_chain_inner(cx, normalized_ty, depth), _ => None, }, _ => None, @@ -1342,7 +1360,8 @@ pub fn has_non_owning_mutable_access<'tcx>(cx: &LateContext<'tcx>, iter_ty: Ty<' mutability.is_mut() || !pointee_ty.is_freeze(cx.tcx, cx.typing_env()) }, ty::Closure(_, closure_args) => { - matches!(closure_args.types().next_back(), Some(captures) if has_non_owning_mutable_access_inner(cx, phantoms, captures)) + matches!(closure_args.types().next_back(), + Some(captures) if has_non_owning_mutable_access_inner(cx, phantoms, captures)) }, ty::Tuple(tuple_args) => tuple_args .iter() diff --git a/src/tools/clippy/rust-toolchain.toml b/src/tools/clippy/rust-toolchain.toml index b6817d9a146..3fc5a1224a8 100644 --- a/src/tools/clippy/rust-toolchain.toml +++ b/src/tools/clippy/rust-toolchain.toml @@ -1,6 +1,6 @@ [toolchain] # begin autogenerated nightly -channel = "nightly-2025-05-31" +channel = "nightly-2025-06-12" # end autogenerated nightly components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" diff --git a/src/tools/clippy/tests/compile-test.rs b/src/tools/clippy/tests/compile-test.rs index 78b27e2f613..99a01257a7b 100644 --- a/src/tools/clippy/tests/compile-test.rs +++ b/src/tools/clippy/tests/compile-test.rs @@ -273,10 +273,10 @@ fn run_ui_cargo(cx: &TestContext) { config.program.input_file_flag = CommandBuilder::cargo().input_file_flag; config.program.out_dir_flag = CommandBuilder::cargo().out_dir_flag; config.program.args = vec!["clippy".into(), "--color".into(), "never".into(), "--quiet".into()]; - config - .program - .envs - .push(("RUSTFLAGS".into(), Some("-Dwarnings".into()))); + config.program.envs.extend([ + ("RUSTFLAGS".into(), Some("-Dwarnings".into())), + ("CARGO_INCREMENTAL".into(), Some("0".into())), + ]); // We need to do this while we still have a rustc in the `program` field. config.fill_host_and_target().unwrap(); config.program.program.set_file_name(if cfg!(windows) { diff --git a/src/tools/clippy/tests/symbols-used.rs b/src/tools/clippy/tests/symbols-used.rs new file mode 100644 index 00000000000..bc0456711fb --- /dev/null +++ b/src/tools/clippy/tests/symbols-used.rs @@ -0,0 +1,81 @@ +// This test checks that all symbols defined in Clippy's `sym.rs` file +// are used in Clippy. Otherwise, it will fail with a list of symbols +// which are unused. +// +// This test is a no-op if run as part of the compiler test suite +// and will always succeed. + +use std::collections::HashSet; +use std::ffi::OsStr; +use std::fs; + +use regex::Regex; +use walkdir::{DirEntry, WalkDir}; + +const SYM_FILE: &str = "clippy_utils/src/sym.rs"; + +type Result<T, E = AnyError> = std::result::Result<T, E>; +type AnyError = Box<dyn std::error::Error>; + +#[test] +#[allow(clippy::case_sensitive_file_extension_comparisons)] +fn all_symbols_are_used() -> Result<()> { + if option_env!("RUSTC_TEST_SUITE").is_some() { + return Ok(()); + } + + // Load all symbols defined in `SYM_FILE`. + let content = fs::read_to_string(SYM_FILE)?; + let content = content + .split_once("generate! {") + .ok_or("cannot find symbols start")? + .1 + .split_once("\n}\n") + .ok_or("cannot find symbols end")? + .0; + let mut interned: HashSet<String> = Regex::new(r"(?m)^ (\w+)") + .unwrap() + .captures_iter(content) + .map(|m| m[1].to_owned()) + .collect(); + + // Remove symbols used as `sym::*`. + let used_re = Regex::new(r"\bsym::(\w+)\b").unwrap(); + let rs_ext = OsStr::new("rs"); + for dir in ["clippy_lints", "clippy_lints_internal", "clippy_utils", "src"] { + for file in WalkDir::new(dir) + .into_iter() + .flatten() + .map(DirEntry::into_path) + .filter(|p| p.extension() == Some(rs_ext)) + { + for cap in used_re.captures_iter(&fs::read_to_string(file)?) { + interned.remove(&cap[1]); + } + } + } + + // Remove symbols used as part of paths. + let paths_re = Regex::new(r"path!\(([\w:]+)\)").unwrap(); + for path in [ + "clippy_utils/src/paths.rs", + "clippy_lints_internal/src/internal_paths.rs", + ] { + for cap in paths_re.captures_iter(&fs::read_to_string(path)?) { + for sym in cap[1].split("::") { + interned.remove(sym); + } + } + } + + let mut extra = interned.iter().collect::<Vec<_>>(); + if !extra.is_empty() { + extra.sort_unstable(); + eprintln!("Unused symbols defined in {SYM_FILE}:"); + for sym in extra { + eprintln!(" - {sym}"); + } + Err(format!("extra symbols found — remove them {SYM_FILE}"))?; + } + Ok(()) +} diff --git a/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs b/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs index 6a9a49324db..4a179cd929f 100644 --- a/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs +++ b/src/tools/clippy/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs @@ -1,4 +1,5 @@ #![warn(clippy::await_holding_invalid_type)] +#![allow(clippy::ip_constant)] use std::net::Ipv4Addr; async fn bad() -> u32 { 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 deb7f49db9e..c3c88698032 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 @@ -1,5 +1,5 @@ error: holding a disallowed type across an await point `std::string::String` - --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:5:9 + --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:6:9 | LL | let _x = String::from("hello"); | ^^ @@ -9,13 +9,13 @@ LL | let _x = String::from("hello"); = help: to override `-D warnings` add `#[allow(clippy::await_holding_invalid_type)]` error: holding a disallowed type across an await point `std::net::Ipv4Addr` - --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:11:9 + --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:12:9 | LL | let x = Ipv4Addr::new(127, 0, 0, 1); | ^ error: holding a disallowed type across an await point `std::string::String` - --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:35:13 + --> tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs:36:13 | LL | let _x = String::from("hi!"); | ^^ diff --git a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.rs b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.rs index 06472a4f5d5..922d30443fc 100644 --- a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.rs +++ b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.rs @@ -239,3 +239,40 @@ fn fp_if_let_issue7054() { } fn main() {} + +mod issue14873 { + fn foo() -> i32 { + todo!() + } + + macro_rules! qux { + ($a:ident, $b:ident, $condition:expr) => { + if $condition { + "." + } else { + "" + }; + $a = foo(); + $b = foo(); + }; + } + + fn share_on_bottom() { + let mut a = 0; + let mut b = 0; + if false { + qux!(a, b, a == b); + } else { + qux!(a, b, a != b); + }; + + if false { + qux!(a, b, a == b); + let y = 1; + } else { + qux!(a, b, a != b); + let y = 1; + //~^ branches_sharing_code + } + } +} diff --git a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.stderr b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.stderr index 648a99c65ed..f437db8b733 100644 --- a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.stderr +++ b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_bottom.stderr @@ -157,5 +157,20 @@ LL ~ if x == 17 { b = 1; a = 0x99; } else { } LL + a = 0x99; | -error: aborting due to 9 previous errors +error: all if blocks contain the same code at the end + --> tests/ui/branches_sharing_code/shared_at_bottom.rs:274:9 + | +LL | / let y = 1; +LL | | +LL | | } + | |_________^ + | + = warning: some moved values might need to be renamed to avoid wrong references +help: consider moving these statements after the if + | +LL ~ } +LL + let y = 1; + | + +error: aborting due to 10 previous errors diff --git a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.rs b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.rs index 694c67d4c85..dcd77679fc6 100644 --- a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.rs +++ b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.rs @@ -124,3 +124,34 @@ fn pf_local_with_inferred_type_issue7053() { } fn main() {} + +mod issue14873 { + fn foo() -> i32 { + todo!() + } + + macro_rules! qux { + ($a:ident, $b:ident, $condition:expr) => { + let $a: i32 = foo(); + let $b: i32 = foo(); + if $condition { "." } else { "" } + }; + } + + fn share_on_top() { + if false { + qux!(a, b, a == b); + } else { + qux!(a, b, a != b); + }; + + if false { + //~^ branches_sharing_code + let x = 1; + qux!(a, b, a == b); + } else { + let x = 1; + qux!(a, b, a != b); + } + } +} diff --git a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.stderr b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.stderr index d28e9c7af29..30efb98b3f5 100644 --- a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.stderr +++ b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top.stderr @@ -125,5 +125,20 @@ note: the lint level is defined here LL | #![deny(clippy::branches_sharing_code, clippy::if_same_then_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 7 previous errors +error: all if blocks contain the same code at the start + --> tests/ui/branches_sharing_code/shared_at_top.rs:148:9 + | +LL | / if false { +LL | | +LL | | let x = 1; + | |______________________^ + | + = warning: some moved values might need to be renamed to avoid wrong references +help: consider moving these statements before the if + | +LL ~ let x = 1; +LL + if false { + | + +error: aborting due to 8 previous errors diff --git a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.rs b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.rs index 75334f70f1f..e848f0601e3 100644 --- a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.rs +++ b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.rs @@ -128,3 +128,42 @@ fn added_note_for_expression_use() -> u32 { } fn main() {} + +mod issue14873 { + fn foo() -> i32 { + todo!() + } + + macro_rules! qux { + ($a:ident, $b:ident, $condition:expr) => { + let mut $a: i32 = foo(); + let mut $b: i32 = foo(); + if $condition { + "." + } else { + "" + }; + $a = foo(); + $b = foo(); + }; + } + + fn share_on_top_and_bottom() { + if false { + qux!(a, b, a == b); + } else { + qux!(a, b, a != b); + }; + + if false { + //~^ branches_sharing_code + let x = 1; + qux!(a, b, a == b); + let y = 1; + } else { + let x = 1; + qux!(a, b, a != b); + let y = 1; + } + } +} diff --git a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.stderr b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.stderr index 2200ab45089..40f3453edb9 100644 --- a/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.stderr +++ b/src/tools/clippy/tests/ui/branches_sharing_code/shared_at_top_and_bottom.stderr @@ -159,5 +159,31 @@ LL ~ } LL + x * 4 | -error: aborting due to 5 previous errors +error: all if blocks contain the same code at both the start and the end + --> tests/ui/branches_sharing_code/shared_at_top_and_bottom.rs:158:9 + | +LL | / if false { +LL | | +LL | | let x = 1; + | |______________________^ + | +note: this code is shared at the end + --> tests/ui/branches_sharing_code/shared_at_top_and_bottom.rs:166:9 + | +LL | / let y = 1; +LL | | } + | |_________^ + = warning: some moved values might need to be renamed to avoid wrong references +help: consider moving these statements before the if + | +LL ~ let x = 1; +LL + if false { + | +help: consider moving these statements after the if + | +LL ~ } +LL + let y = 1; + | + +error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/cmp_null.fixed b/src/tools/clippy/tests/ui/cmp_null.fixed index 140ddb10aeb..04b8ec50160 100644 --- a/src/tools/clippy/tests/ui/cmp_null.fixed +++ b/src/tools/clippy/tests/ui/cmp_null.fixed @@ -33,3 +33,9 @@ fn main() { let _ = (x as *const ()).is_null(); //~^ cmp_null } + +fn issue15010() { + let f: *mut i32 = std::ptr::null_mut(); + debug_assert!(!f.is_null()); + //~^ cmp_null +} diff --git a/src/tools/clippy/tests/ui/cmp_null.rs b/src/tools/clippy/tests/ui/cmp_null.rs index 16ed17765da..6f7762e6ae8 100644 --- a/src/tools/clippy/tests/ui/cmp_null.rs +++ b/src/tools/clippy/tests/ui/cmp_null.rs @@ -33,3 +33,9 @@ fn main() { let _ = x as *const () == ptr::null(); //~^ cmp_null } + +fn issue15010() { + let f: *mut i32 = std::ptr::null_mut(); + debug_assert!(f != std::ptr::null_mut()); + //~^ cmp_null +} diff --git a/src/tools/clippy/tests/ui/cmp_null.stderr b/src/tools/clippy/tests/ui/cmp_null.stderr index 6821846d046..8a75b050111 100644 --- a/src/tools/clippy/tests/ui/cmp_null.stderr +++ b/src/tools/clippy/tests/ui/cmp_null.stderr @@ -31,5 +31,11 @@ error: comparing with null is better expressed by the `.is_null()` method LL | let _ = x as *const () == ptr::null(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(x as *const ()).is_null()` -error: aborting due to 5 previous errors +error: comparing with null is better expressed by the `.is_null()` method + --> tests/ui/cmp_null.rs:39:19 + | +LL | debug_assert!(f != std::ptr::null_mut()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!f.is_null()` + +error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/coerce_container_to_any.fixed b/src/tools/clippy/tests/ui/coerce_container_to_any.fixed new file mode 100644 index 00000000000..ae9d3ef9656 --- /dev/null +++ b/src/tools/clippy/tests/ui/coerce_container_to_any.fixed @@ -0,0 +1,26 @@ +#![warn(clippy::coerce_container_to_any)] + +use std::any::Any; + +fn main() { + let x: Box<dyn Any> = Box::new(()); + let ref_x = &x; + + f(&*x); + //~^ coerce_container_to_any + + f(&**ref_x); + //~^ coerce_container_to_any + + let _: &dyn Any = &*x; + //~^ coerce_container_to_any + + f(&42); + f(&Box::new(())); + f(&Box::new(Box::new(()))); + f(&**ref_x); + f(&*x); + let _: &dyn Any = &*x; +} + +fn f(_: &dyn Any) {} diff --git a/src/tools/clippy/tests/ui/coerce_container_to_any.rs b/src/tools/clippy/tests/ui/coerce_container_to_any.rs new file mode 100644 index 00000000000..9948bd48e0d --- /dev/null +++ b/src/tools/clippy/tests/ui/coerce_container_to_any.rs @@ -0,0 +1,26 @@ +#![warn(clippy::coerce_container_to_any)] + +use std::any::Any; + +fn main() { + let x: Box<dyn Any> = Box::new(()); + let ref_x = &x; + + f(&x); + //~^ coerce_container_to_any + + f(ref_x); + //~^ coerce_container_to_any + + let _: &dyn Any = &x; + //~^ coerce_container_to_any + + f(&42); + f(&Box::new(())); + f(&Box::new(Box::new(()))); + f(&**ref_x); + f(&*x); + let _: &dyn Any = &*x; +} + +fn f(_: &dyn Any) {} diff --git a/src/tools/clippy/tests/ui/coerce_container_to_any.stderr b/src/tools/clippy/tests/ui/coerce_container_to_any.stderr new file mode 100644 index 00000000000..00ab77e0ce0 --- /dev/null +++ b/src/tools/clippy/tests/ui/coerce_container_to_any.stderr @@ -0,0 +1,23 @@ +error: coercing `&std::boxed::Box<dyn std::any::Any>` to `&dyn Any` + --> tests/ui/coerce_container_to_any.rs:9:7 + | +LL | f(&x); + | ^^ help: consider dereferencing: `&*x` + | + = note: `-D clippy::coerce-container-to-any` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::coerce_container_to_any)]` + +error: coercing `&std::boxed::Box<dyn std::any::Any>` to `&dyn Any` + --> tests/ui/coerce_container_to_any.rs:12:7 + | +LL | f(ref_x); + | ^^^^^ help: consider dereferencing: `&**ref_x` + +error: coercing `&std::boxed::Box<dyn std::any::Any>` to `&dyn Any` + --> tests/ui/coerce_container_to_any.rs:15:23 + | +LL | let _: &dyn Any = &x; + | ^^ help: consider dereferencing: `&*x` + +error: aborting due to 3 previous errors + diff --git a/src/tools/clippy/tests/ui/crashes/ice-14935.rs b/src/tools/clippy/tests/ui/crashes/ice-14935.rs new file mode 100644 index 00000000000..74cda9aae53 --- /dev/null +++ b/src/tools/clippy/tests/ui/crashes/ice-14935.rs @@ -0,0 +1,27 @@ +//@check-pass +#![warn(clippy::mutable_key_type)] + +use std::marker::PhantomData; + +trait Group { + type ExposantSet: Group; +} + +struct Pow<T: Group> { + exposant: Box<Pow<T::ExposantSet>>, + _p: PhantomData<T>, +} + +impl<T: Group> Pow<T> { + fn is_zero(&self) -> bool { + false + } + fn normalize(&self) { + #[expect(clippy::if_same_then_else)] + if self.is_zero() { + } else if false { + } + } +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/crashes/ice-9463.rs b/src/tools/clippy/tests/ui/crashes/ice-9463.rs index 93808e0f892..cfa6cdac6fa 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-9463.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-9463.rs @@ -1,8 +1,7 @@ -#![deny(arithmetic_overflow)] +//@check-pass + fn main() { let _x = -1_i32 >> -1; - //~^ ERROR: this arithmetic operation will overflow + #[expect(overflowing_literals)] let _y = 1u32 >> 10000000000000u32; - //~^ ERROR: this arithmetic operation will overflow - //~| ERROR: literal out of range } diff --git a/src/tools/clippy/tests/ui/crashes/ice-9463.stderr b/src/tools/clippy/tests/ui/crashes/ice-9463.stderr deleted file mode 100644 index 9a3a5e444ad..00000000000 --- a/src/tools/clippy/tests/ui/crashes/ice-9463.stderr +++ /dev/null @@ -1,29 +0,0 @@ -error: this arithmetic operation will overflow - --> tests/ui/crashes/ice-9463.rs:3:14 - | -LL | let _x = -1_i32 >> -1; - | ^^^^^^^^^^^^ attempt to shift right by `-1_i32`, which would overflow - | -note: the lint level is defined here - --> tests/ui/crashes/ice-9463.rs:1:9 - | -LL | #![deny(arithmetic_overflow)] - | ^^^^^^^^^^^^^^^^^^^ - -error: this arithmetic operation will overflow - --> tests/ui/crashes/ice-9463.rs:5:14 - | -LL | let _y = 1u32 >> 10000000000000u32; - | ^^^^^^^^^^^^^^^^^^^^^^^^^ attempt to shift right by `1316134912_u32`, which would overflow - -error: literal out of range for `u32` - --> tests/ui/crashes/ice-9463.rs:5:22 - | -LL | let _y = 1u32 >> 10000000000000u32; - | ^^^^^^^^^^^^^^^^^ - | - = note: the literal `10000000000000u32` does not fit into the type `u32` whose range is `0..=4294967295` - = note: `#[deny(overflowing_literals)]` on by default - -error: aborting due to 3 previous errors - diff --git a/src/tools/clippy/tests/ui/crashes/ice-rust-107877.rs b/src/tools/clippy/tests/ui/crashes/ice-rust-107877.rs index 55fe418bed1..dccb0cf8ac1 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-rust-107877.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-rust-107877.rs @@ -4,6 +4,7 @@ struct Foo; +#[allow(clippy::infallible_try_from)] impl<'a> std::convert::TryFrom<&'a String> for Foo { type Error = std::convert::Infallible; diff --git a/src/tools/clippy/tests/ui/create_dir.fixed b/src/tools/clippy/tests/ui/create_dir.fixed index 4a5b1b77be6..d4b8f8b4d07 100644 --- a/src/tools/clippy/tests/ui/create_dir.fixed +++ b/src/tools/clippy/tests/ui/create_dir.fixed @@ -7,12 +7,31 @@ fn create_dir() {} fn main() { // Should be warned - create_dir_all("foo"); + std::fs::create_dir_all("foo"); //~^ create_dir - create_dir_all("bar").unwrap(); + std::fs::create_dir_all("bar").unwrap(); //~^ create_dir // Shouldn't be warned create_dir(); std::fs::create_dir_all("foobar"); } + +mod issue14994 { + fn with_no_prefix() { + use std::fs::create_dir; + std::fs::create_dir_all("some/dir").unwrap(); + //~^ create_dir + } + + fn with_fs_prefix() { + use std::fs; + fs::create_dir_all("/some/dir").unwrap(); + //~^ create_dir + } + + fn with_full_prefix() { + std::fs::create_dir_all("/some/dir").unwrap(); + //~^ create_dir + } +} diff --git a/src/tools/clippy/tests/ui/create_dir.rs b/src/tools/clippy/tests/ui/create_dir.rs index bf185ba3a7c..21e0bdba03b 100644 --- a/src/tools/clippy/tests/ui/create_dir.rs +++ b/src/tools/clippy/tests/ui/create_dir.rs @@ -16,3 +16,22 @@ fn main() { create_dir(); std::fs::create_dir_all("foobar"); } + +mod issue14994 { + fn with_no_prefix() { + use std::fs::create_dir; + create_dir("some/dir").unwrap(); + //~^ create_dir + } + + fn with_fs_prefix() { + use std::fs; + fs::create_dir("/some/dir").unwrap(); + //~^ create_dir + } + + fn with_full_prefix() { + std::fs::create_dir("/some/dir").unwrap(); + //~^ create_dir + } +} diff --git a/src/tools/clippy/tests/ui/create_dir.stderr b/src/tools/clippy/tests/ui/create_dir.stderr index 51d6ac686e0..e3ca0e7255c 100644 --- a/src/tools/clippy/tests/ui/create_dir.stderr +++ b/src/tools/clippy/tests/ui/create_dir.stderr @@ -8,9 +8,8 @@ LL | std::fs::create_dir("foo"); = help: to override `-D warnings` add `#[allow(clippy::create_dir)]` help: consider calling `std::fs::create_dir_all` instead | -LL - std::fs::create_dir("foo"); -LL + create_dir_all("foo"); - | +LL | std::fs::create_dir_all("foo"); + | ++++ error: calling `std::fs::create_dir` where there may be a better way --> tests/ui/create_dir.rs:12:5 @@ -20,9 +19,41 @@ LL | std::fs::create_dir("bar").unwrap(); | help: consider calling `std::fs::create_dir_all` instead | -LL - std::fs::create_dir("bar").unwrap(); -LL + create_dir_all("bar").unwrap(); +LL | std::fs::create_dir_all("bar").unwrap(); + | ++++ + +error: calling `std::fs::create_dir` where there may be a better way + --> tests/ui/create_dir.rs:23:9 + | +LL | create_dir("some/dir").unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: consider calling `std::fs::create_dir_all` instead + | +LL | std::fs::create_dir_all("some/dir").unwrap(); + | +++++++++ ++++ + +error: calling `std::fs::create_dir` where there may be a better way + --> tests/ui/create_dir.rs:29:9 + | +LL | fs::create_dir("/some/dir").unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: consider calling `std::fs::create_dir_all` instead + | +LL | fs::create_dir_all("/some/dir").unwrap(); + | ++++ + +error: calling `std::fs::create_dir` where there may be a better way + --> tests/ui/create_dir.rs:34:9 + | +LL | std::fs::create_dir("/some/dir").unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: consider calling `std::fs::create_dir_all` instead | +LL | std::fs::create_dir_all("/some/dir").unwrap(); + | ++++ -error: aborting due to 2 previous errors +error: aborting due to 5 previous errors diff --git a/src/tools/clippy/tests/ui/disallowed_names.rs b/src/tools/clippy/tests/ui/disallowed_names.rs index 30fbdbc1fdc..15bb6734997 100644 --- a/src/tools/clippy/tests/ui/disallowed_names.rs +++ b/src/tools/clippy/tests/ui/disallowed_names.rs @@ -1,3 +1,4 @@ +//@aux-build:proc_macros.rs #![allow( dead_code, clippy::needless_if, @@ -9,6 +10,9 @@ )] #![warn(clippy::disallowed_names)] +extern crate proc_macros; +use proc_macros::{external, with_span}; + fn test(foo: ()) {} //~^ disallowed_names @@ -66,6 +70,17 @@ fn issue_1647_ref_mut() { //~^ disallowed_names } +pub fn issue_14958_proc_macro() { + // does not lint macro-generated code + external! { + let foo = 0; + } + with_span! { + span + let foo = 0; + } +} + #[cfg(test)] mod tests { fn issue_7305() { diff --git a/src/tools/clippy/tests/ui/disallowed_names.stderr b/src/tools/clippy/tests/ui/disallowed_names.stderr index 09398ebbab7..b43d1b3ebfa 100644 --- a/src/tools/clippy/tests/ui/disallowed_names.stderr +++ b/src/tools/clippy/tests/ui/disallowed_names.stderr @@ -1,5 +1,5 @@ error: use of a disallowed/placeholder name `foo` - --> tests/ui/disallowed_names.rs:12:9 + --> tests/ui/disallowed_names.rs:16:9 | LL | fn test(foo: ()) {} | ^^^ @@ -8,79 +8,79 @@ LL | fn test(foo: ()) {} = help: to override `-D warnings` add `#[allow(clippy::disallowed_names)]` error: use of a disallowed/placeholder name `foo` - --> tests/ui/disallowed_names.rs:16:9 + --> tests/ui/disallowed_names.rs:20:9 | LL | let foo = 42; | ^^^ error: use of a disallowed/placeholder name `baz` - --> tests/ui/disallowed_names.rs:19:9 + --> tests/ui/disallowed_names.rs:23:9 | LL | let baz = 42; | ^^^ error: use of a disallowed/placeholder name `quux` - --> tests/ui/disallowed_names.rs:22:9 + --> tests/ui/disallowed_names.rs:26:9 | LL | let quux = 42; | ^^^^ error: use of a disallowed/placeholder name `foo` - --> tests/ui/disallowed_names.rs:35:10 + --> tests/ui/disallowed_names.rs:39:10 | LL | (foo, Some(baz), quux @ Some(_)) => (), | ^^^ error: use of a disallowed/placeholder name `baz` - --> tests/ui/disallowed_names.rs:35:20 + --> tests/ui/disallowed_names.rs:39:20 | LL | (foo, Some(baz), quux @ Some(_)) => (), | ^^^ error: use of a disallowed/placeholder name `quux` - --> tests/ui/disallowed_names.rs:35:26 + --> tests/ui/disallowed_names.rs:39:26 | LL | (foo, Some(baz), quux @ Some(_)) => (), | ^^^^ error: use of a disallowed/placeholder name `foo` - --> tests/ui/disallowed_names.rs:43:19 + --> tests/ui/disallowed_names.rs:47:19 | LL | fn issue_1647(mut foo: u8) { | ^^^ error: use of a disallowed/placeholder name `baz` - --> tests/ui/disallowed_names.rs:46:13 + --> tests/ui/disallowed_names.rs:50:13 | LL | let mut baz = 0; | ^^^ error: use of a disallowed/placeholder name `quux` - --> tests/ui/disallowed_names.rs:49:21 + --> tests/ui/disallowed_names.rs:53:21 | LL | if let Some(mut quux) = Some(42) {} | ^^^^ error: use of a disallowed/placeholder name `baz` - --> tests/ui/disallowed_names.rs:54:13 + --> tests/ui/disallowed_names.rs:58:13 | LL | let ref baz = 0; | ^^^ error: use of a disallowed/placeholder name `quux` - --> tests/ui/disallowed_names.rs:57:21 + --> tests/ui/disallowed_names.rs:61:21 | LL | if let Some(ref quux) = Some(42) {} | ^^^^ error: use of a disallowed/placeholder name `baz` - --> tests/ui/disallowed_names.rs:62:17 + --> tests/ui/disallowed_names.rs:66:17 | LL | let ref mut baz = 0; | ^^^ error: use of a disallowed/placeholder name `quux` - --> tests/ui/disallowed_names.rs:65:25 + --> tests/ui/disallowed_names.rs:69:25 | LL | if let Some(ref mut quux) = Some(42) {} | ^^^^ diff --git a/src/tools/clippy/tests/ui/doc_suspicious_footnotes.fixed b/src/tools/clippy/tests/ui/doc_suspicious_footnotes.fixed new file mode 100644 index 00000000000..9ed3fd4ef31 --- /dev/null +++ b/src/tools/clippy/tests/ui/doc_suspicious_footnotes.fixed @@ -0,0 +1,186 @@ +#![warn(clippy::doc_suspicious_footnotes)] +#![allow(clippy::needless_raw_string_hashes)] +//! This is not a footnote[^1]. +//! +//! [^1]: <!-- description --> +//~^ doc_suspicious_footnotes +//! +//! This is not a footnote[^either], but it doesn't warn. +//! +//! This is not a footnote\[^1], but it also doesn't warn. +//! +//! This is not a footnote[^1\], but it also doesn't warn. +//! +//! This is not a `footnote[^1]`, but it also doesn't warn. +//! +//! This is a footnote[^2]. +//! +//! [^2]: hello world + +/// This is not a footnote[^1]. +/// +/// [^1]: <!-- description --> +//~^ doc_suspicious_footnotes +/// +/// This is not a footnote[^either], but it doesn't warn. +/// +/// This is not a footnote\[^1], but it also doesn't warn. +/// +/// This is not a footnote[^1\], but it also doesn't warn. +/// +/// This is not a `footnote[^1]`, but it also doesn't warn. +/// +/// This is a footnote[^2]. +/// +/// [^2]: hello world +pub fn footnotes() { + // test code goes here +} + +pub struct Foo; +#[rustfmt::skip] +impl Foo { + #[doc = r#"This is not a footnote[^1]. + +[^1]: <!-- description -->"#] + //~^ doc_suspicious_footnotes + #[doc = r#""#] + #[doc = r#"This is not a footnote[^either], but it doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is not a footnote\[^1], but it also doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is not a footnote[^1\], but it also doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is not a `footnote[^1]`, but it also doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is a footnote[^2]."#] + #[doc = r#""#] + #[doc = r#"[^2]: hello world"#] + pub fn footnotes() { + // test code goes here + } + #[doc = r#"This is not a footnote[^1]. + + This is not a footnote[^either], but it doesn't warn. + + This is not a footnote\[^1], but it also doesn't warn. + + This is not a footnote[^1\], but it also doesn't warn. + + This is not a `footnote[^1]`, but it also doesn't warn. + + This is a footnote[^2]. + + [^2]: hello world + + +[^1]: <!-- description -->"#] + //~^^^^^^^^^^^^^^ doc_suspicious_footnotes + pub fn footnotes2() { + // test code goes here + } + #[cfg_attr( + not(FALSE), + doc = r#"This is not a footnote[^1]. + +This is not a footnote[^either], but it doesn't warn. + +[^1]: <!-- description -->"# + //~^ doc_suspicious_footnotes + )] + pub fn footnotes3() { + // test code goes here + } + #[doc = "My footnote [^foot\note]"] + pub fn footnote4() { + // test code goes here + } + #[doc = "Hihi"]pub fn footnote5() { + // test code goes here + } +} + +#[doc = r#"This is not a footnote[^1]. + +[^1]: <!-- description -->"#] +//~^ doc_suspicious_footnotes +#[doc = r""] +#[doc = r"This is not a footnote[^either], but it doesn't warn."] +#[doc = r""] +#[doc = r"This is not a footnote\[^1], but it also doesn't warn."] +#[doc = r""] +#[doc = r"This is not a footnote[^1\], but it also doesn't warn."] +#[doc = r""] +#[doc = r"This is not a `footnote[^1]`, but it also doesn't warn."] +#[doc = r""] +#[doc = r"This is a footnote[^2]."] +#[doc = r""] +#[doc = r"[^2]: hello world"] +pub fn footnotes_attrs() { + // test code goes here +} + +pub mod multiline { + /*! + * This is not a footnote[^1]. //~ doc_suspicious_footnotes + * + * This is not a footnote\[^1], but it doesn't warn. + * + * This is a footnote[^2]. + * + * These give weird results, but correct ones, so it works. + * + * [^2]: hello world + */ +/*! [^1]: <!-- description --> */ + /** + * This is not a footnote[^1]. //~ doc_suspicious_footnotes + * + * This is not a footnote\[^1], but it doesn't warn. + * + * This is a footnote[^2]. + * + * These give weird results, but correct ones, so it works. + * + * [^2]: hello world + */ +/** [^1]: <!-- description --> */ + pub fn foo() {} +} + +/// This is not a footnote [^1] +/// +/// [^1]: <!-- description --> +//~^ doc_suspicious_footnotes +/// +/// This one is [^2] +/// +/// [^2]: contents +#[doc = r#"This is not a footnote [^3] + +[^3]: <!-- description -->"#] +//~^ doc_suspicious_footnotes +#[doc = ""] +#[doc = "This one is [^4]"] +#[doc = ""] +#[doc = "[^4]: contents"] +pub struct MultiFragmentFootnote; + +#[doc(inline)] +/// This is not a footnote [^5] +/// +/// [^5]: <!-- description --> +//~^ doc_suspicious_footnotes +/// +/// This one is [^6] +/// +/// [^6]: contents +#[doc = r#"This is not a footnote [^7] + +[^7]: <!-- description -->"#] +//~^ doc_suspicious_footnotes +#[doc = ""] +#[doc = "This one is [^8]"] +#[doc = ""] +#[doc = "[^8]: contents"] +pub use MultiFragmentFootnote as OtherInlinedFootnote; diff --git a/src/tools/clippy/tests/ui/doc_suspicious_footnotes.rs b/src/tools/clippy/tests/ui/doc_suspicious_footnotes.rs new file mode 100644 index 00000000000..9a8d0dcf475 --- /dev/null +++ b/src/tools/clippy/tests/ui/doc_suspicious_footnotes.rs @@ -0,0 +1,162 @@ +#![warn(clippy::doc_suspicious_footnotes)] +#![allow(clippy::needless_raw_string_hashes)] +//! This is not a footnote[^1]. +//~^ doc_suspicious_footnotes +//! +//! This is not a footnote[^either], but it doesn't warn. +//! +//! This is not a footnote\[^1], but it also doesn't warn. +//! +//! This is not a footnote[^1\], but it also doesn't warn. +//! +//! This is not a `footnote[^1]`, but it also doesn't warn. +//! +//! This is a footnote[^2]. +//! +//! [^2]: hello world + +/// This is not a footnote[^1]. +//~^ doc_suspicious_footnotes +/// +/// This is not a footnote[^either], but it doesn't warn. +/// +/// This is not a footnote\[^1], but it also doesn't warn. +/// +/// This is not a footnote[^1\], but it also doesn't warn. +/// +/// This is not a `footnote[^1]`, but it also doesn't warn. +/// +/// This is a footnote[^2]. +/// +/// [^2]: hello world +pub fn footnotes() { + // test code goes here +} + +pub struct Foo; +#[rustfmt::skip] +impl Foo { + #[doc = r#"This is not a footnote[^1]."#] + //~^ doc_suspicious_footnotes + #[doc = r#""#] + #[doc = r#"This is not a footnote[^either], but it doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is not a footnote\[^1], but it also doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is not a footnote[^1\], but it also doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is not a `footnote[^1]`, but it also doesn't warn."#] + #[doc = r#""#] + #[doc = r#"This is a footnote[^2]."#] + #[doc = r#""#] + #[doc = r#"[^2]: hello world"#] + pub fn footnotes() { + // test code goes here + } + #[doc = "This is not a footnote[^1]. + + This is not a footnote[^either], but it doesn't warn. + + This is not a footnote\\[^1], but it also doesn't warn. + + This is not a footnote[^1\\], but it also doesn't warn. + + This is not a `footnote[^1]`, but it also doesn't warn. + + This is a footnote[^2]. + + [^2]: hello world + "] + //~^^^^^^^^^^^^^^ doc_suspicious_footnotes + pub fn footnotes2() { + // test code goes here + } + #[cfg_attr( + not(FALSE), + doc = "This is not a footnote[^1].\n\nThis is not a footnote[^either], but it doesn't warn." + //~^ doc_suspicious_footnotes + )] + pub fn footnotes3() { + // test code goes here + } + #[doc = "My footnote [^foot\note]"] + pub fn footnote4() { + // test code goes here + } + #[doc = "Hihi"]pub fn footnote5() { + // test code goes here + } +} + +#[doc = r"This is not a footnote[^1]."] +//~^ doc_suspicious_footnotes +#[doc = r""] +#[doc = r"This is not a footnote[^either], but it doesn't warn."] +#[doc = r""] +#[doc = r"This is not a footnote\[^1], but it also doesn't warn."] +#[doc = r""] +#[doc = r"This is not a footnote[^1\], but it also doesn't warn."] +#[doc = r""] +#[doc = r"This is not a `footnote[^1]`, but it also doesn't warn."] +#[doc = r""] +#[doc = r"This is a footnote[^2]."] +#[doc = r""] +#[doc = r"[^2]: hello world"] +pub fn footnotes_attrs() { + // test code goes here +} + +pub mod multiline { + /*! + * This is not a footnote[^1]. //~ doc_suspicious_footnotes + * + * This is not a footnote\[^1], but it doesn't warn. + * + * This is a footnote[^2]. + * + * These give weird results, but correct ones, so it works. + * + * [^2]: hello world + */ + /** + * This is not a footnote[^1]. //~ doc_suspicious_footnotes + * + * This is not a footnote\[^1], but it doesn't warn. + * + * This is a footnote[^2]. + * + * These give weird results, but correct ones, so it works. + * + * [^2]: hello world + */ + pub fn foo() {} +} + +/// This is not a footnote [^1] +//~^ doc_suspicious_footnotes +/// +/// This one is [^2] +/// +/// [^2]: contents +#[doc = "This is not a footnote [^3]"] +//~^ doc_suspicious_footnotes +#[doc = ""] +#[doc = "This one is [^4]"] +#[doc = ""] +#[doc = "[^4]: contents"] +pub struct MultiFragmentFootnote; + +#[doc(inline)] +/// This is not a footnote [^5] +//~^ doc_suspicious_footnotes +/// +/// This one is [^6] +/// +/// [^6]: contents +#[doc = "This is not a footnote [^7]"] +//~^ doc_suspicious_footnotes +#[doc = ""] +#[doc = "This one is [^8]"] +#[doc = ""] +#[doc = "[^8]: contents"] +pub use MultiFragmentFootnote as OtherInlinedFootnote; diff --git a/src/tools/clippy/tests/ui/doc_suspicious_footnotes.stderr b/src/tools/clippy/tests/ui/doc_suspicious_footnotes.stderr new file mode 100644 index 00000000000..4f920f37a62 --- /dev/null +++ b/src/tools/clippy/tests/ui/doc_suspicious_footnotes.stderr @@ -0,0 +1,179 @@ +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:3:27 + | +LL | //! This is not a footnote[^1]. + | ^^^^ + | + = note: `-D clippy::doc-suspicious-footnotes` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::doc_suspicious_footnotes)]` +help: add footnote definition + | +LL ~ //! This is not a footnote[^1]. +LL + //! +LL + //! [^1]: <!-- description --> + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:18:27 + | +LL | /// This is not a footnote[^1]. + | ^^^^ + | +help: add footnote definition + | +LL ~ /// This is not a footnote[^1]. +LL + /// +LL + /// [^1]: <!-- description --> + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:39:13 + | +LL | #[doc = r#"This is not a footnote[^1]."#] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: add footnote definition + | +LL ~ #[doc = r#"This is not a footnote[^1]. +LL + +LL ~ [^1]: <!-- description -->"#] + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:56:13 + | +LL | #[doc = "This is not a footnote[^1]. + | _____________^ +LL | | +LL | | This is not a footnote[^either], but it doesn't warn. +... | +LL | | [^2]: hello world +LL | | "] + | |_____^ + | +help: add footnote definition + | +LL ~ #[doc = r#"This is not a footnote[^1]. +LL + +LL + This is not a footnote[^either], but it doesn't warn. +LL + +LL + This is not a footnote\[^1], but it also doesn't warn. +LL + +LL + This is not a footnote[^1\], but it also doesn't warn. +LL + +LL + This is not a `footnote[^1]`, but it also doesn't warn. +LL + +LL + This is a footnote[^2]. +LL + +LL + [^2]: hello world +LL + +LL + +LL ~ [^1]: <!-- description -->"#] + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:76:38 + | +LL | doc = "This is not a footnote[^1].\n\nThis is not a footnote[^either], but it doesn't warn." + | ^^^^ + | +help: add footnote definition + | +LL ~ doc = r#"This is not a footnote[^1]. +LL + +LL + This is not a footnote[^either], but it doesn't warn. +LL + +LL + [^1]: <!-- description -->"# + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:91:9 + | +LL | #[doc = r"This is not a footnote[^1]."] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: add footnote definition + | +LL ~ #[doc = r#"This is not a footnote[^1]. +LL + +LL ~ [^1]: <!-- description -->"#] + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:111:30 + | +LL | * This is not a footnote[^1]. + | ^^^^ + | +help: add footnote definition + | +LL ~ */ +LL + /*! [^1]: <!-- description --> */ + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:122:30 + | +LL | * This is not a footnote[^1]. + | ^^^^ + | +help: add footnote definition + | +LL ~ */ +LL + /** [^1]: <!-- description --> */ + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:135:28 + | +LL | /// This is not a footnote [^1] + | ^^^^ + | +help: add footnote definition + | +LL ~ /// This is not a footnote [^1] +LL + /// +LL + /// [^1]: <!-- description --> + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:141:33 + | +LL | #[doc = "This is not a footnote [^3]"] + | ^^^^ + | +help: add footnote definition + | +LL ~ #[doc = r#"This is not a footnote [^3] +LL + +LL ~ [^3]: <!-- description -->"#] + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:150:28 + | +LL | /// This is not a footnote [^5] + | ^^^^ + | +help: add footnote definition + | +LL ~ /// This is not a footnote [^5] +LL + /// +LL + /// [^5]: <!-- description --> + | + +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes.rs:156:33 + | +LL | #[doc = "This is not a footnote [^7]"] + | ^^^^ + | +help: add footnote definition + | +LL ~ #[doc = r#"This is not a footnote [^7] +LL + +LL ~ [^7]: <!-- description -->"#] + | + +error: aborting due to 12 previous errors + diff --git a/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.rs b/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.rs new file mode 100644 index 00000000000..4f75ad94eaf --- /dev/null +++ b/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.rs @@ -0,0 +1,4 @@ +//@ error-in-other-file: footnote +//@ no-rustfix +#![warn(clippy::doc_suspicious_footnotes)] +#![doc=include_str!("doc_suspicious_footnotes_include.txt")] diff --git a/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.stderr b/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.stderr new file mode 100644 index 00000000000..74154e3f4ef --- /dev/null +++ b/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.stderr @@ -0,0 +1,17 @@ +error: looks like a footnote ref, but has no matching footnote + --> tests/ui/doc_suspicious_footnotes_include.txt:1:23 + | +LL | This is not a footnote[^1]. + | ^^^^ + | + = note: `-D clippy::doc-suspicious-footnotes` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::doc_suspicious_footnotes)]` +help: add footnote definition + | +LL ~ [^2]: hello world +LL + +LL + [^1]: <!-- description --> + | + +error: aborting due to 1 previous error + diff --git a/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.txt b/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.txt new file mode 100644 index 00000000000..2a533e32c4a --- /dev/null +++ b/src/tools/clippy/tests/ui/doc_suspicious_footnotes_include.txt @@ -0,0 +1,13 @@ +This is not a footnote[^1]. //~ doc_suspicious_footnotes + +This is not a footnote[^either], but it doesn't warn. + +This is not a footnote\[^1], but it also doesn't warn. + +This is not a footnote[^1\], but it also doesn't warn. + +This is not a `footnote[^1]`, but it also doesn't warn. + +This is a footnote[^2]. + +[^2]: hello world diff --git a/src/tools/clippy/tests/ui/format_args.fixed b/src/tools/clippy/tests/ui/format_args.fixed index edfdaa23ca1..3cb6c0b4d97 100644 --- a/src/tools/clippy/tests/ui/format_args.fixed +++ b/src/tools/clippy/tests/ui/format_args.fixed @@ -192,3 +192,13 @@ mod issue_9256 { print_substring("Hello, world!"); } } + +mod issue14952 { + use std::path::Path; + struct Foo(Path); + impl std::fmt::Debug for Foo { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "{:?}", &self.0) + } + } +} diff --git a/src/tools/clippy/tests/ui/format_args.rs b/src/tools/clippy/tests/ui/format_args.rs index 367560d577d..8a9c369fff3 100644 --- a/src/tools/clippy/tests/ui/format_args.rs +++ b/src/tools/clippy/tests/ui/format_args.rs @@ -192,3 +192,13 @@ mod issue_9256 { print_substring("Hello, world!"); } } + +mod issue14952 { + use std::path::Path; + struct Foo(Path); + impl std::fmt::Debug for Foo { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "{:?}", &self.0) + } + } +} diff --git a/src/tools/clippy/tests/ui/indexing_slicing_index.rs b/src/tools/clippy/tests/ui/indexing_slicing_index.rs index ab6a8235008..2510a023acd 100644 --- a/src/tools/clippy/tests/ui/indexing_slicing_index.rs +++ b/src/tools/clippy/tests/ui/indexing_slicing_index.rs @@ -68,7 +68,6 @@ fn main() { // This should be linted, since `suppress-restriction-lint-in-const` default is false. const { &ARR[idx4()] }; //~^ ERROR: indexing may panic - //~| ERROR: index out of bounds let y = &x; // Ok, referencing shouldn't affect this lint. See the issue 6021 diff --git a/src/tools/clippy/tests/ui/indexing_slicing_index.stderr b/src/tools/clippy/tests/ui/indexing_slicing_index.stderr index 8e24b898ed5..c68e1d53a93 100644 --- a/src/tools/clippy/tests/ui/indexing_slicing_index.stderr +++ b/src/tools/clippy/tests/ui/indexing_slicing_index.stderr @@ -9,18 +9,6 @@ LL | const REF: &i32 = &ARR[idx()]; // This should be linted, since `suppress-re = note: `-D clippy::indexing-slicing` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]` -error[E0080]: index out of bounds: the length is 2 but the index is 4 - --> tests/ui/indexing_slicing_index.rs:69:14 - | -LL | const { &ARR[idx4()] }; - | ^^^^^^^^^^^ evaluation of `main::{constant#3}` failed here - -note: erroneous constant encountered - --> tests/ui/indexing_slicing_index.rs:69:5 - | -LL | const { &ARR[idx4()] }; - | ^^^^^^^^^^^^^^^^^^^^^^ - error: indexing may panic --> tests/ui/indexing_slicing_index.rs:48:5 | @@ -63,13 +51,13 @@ LL | const { &ARR[idx4()] }; = note: the suggestion might not be applicable in constant blocks error: index is out of bounds - --> tests/ui/indexing_slicing_index.rs:77:5 + --> tests/ui/indexing_slicing_index.rs:76:5 | LL | y[4]; | ^^^^ error: indexing may panic - --> tests/ui/indexing_slicing_index.rs:81:5 + --> tests/ui/indexing_slicing_index.rs:80:5 | LL | v[0]; | ^^^^ @@ -77,7 +65,7 @@ LL | v[0]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui/indexing_slicing_index.rs:83:5 + --> tests/ui/indexing_slicing_index.rs:82:5 | LL | v[10]; | ^^^^^ @@ -85,7 +73,7 @@ LL | v[10]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui/indexing_slicing_index.rs:85:5 + --> tests/ui/indexing_slicing_index.rs:84:5 | LL | v[1 << 3]; | ^^^^^^^^^ @@ -93,13 +81,13 @@ LL | v[1 << 3]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: index is out of bounds - --> tests/ui/indexing_slicing_index.rs:93:5 + --> tests/ui/indexing_slicing_index.rs:92:5 | LL | x[N]; | ^^^^ error: indexing may panic - --> tests/ui/indexing_slicing_index.rs:97:5 + --> tests/ui/indexing_slicing_index.rs:96:5 | LL | v[N]; | ^^^^ @@ -107,7 +95,7 @@ LL | v[N]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic - --> tests/ui/indexing_slicing_index.rs:99:5 + --> tests/ui/indexing_slicing_index.rs:98:5 | LL | v[M]; | ^^^^ @@ -115,11 +103,10 @@ LL | v[M]; = help: consider using `.get(n)` or `.get_mut(n)` instead error: index is out of bounds - --> tests/ui/indexing_slicing_index.rs:103:13 + --> tests/ui/indexing_slicing_index.rs:102:13 | LL | let _ = x[4]; | ^^^^ -error: aborting due to 15 previous errors +error: aborting due to 14 previous errors -For more information about this error, try `rustc --explain E0080`. diff --git a/src/tools/clippy/tests/ui/infallible_try_from.rs b/src/tools/clippy/tests/ui/infallible_try_from.rs new file mode 100644 index 00000000000..6a1f12f824f --- /dev/null +++ b/src/tools/clippy/tests/ui/infallible_try_from.rs @@ -0,0 +1,33 @@ +#![feature(never_type)] +#![warn(clippy::infallible_try_from)] + +use std::convert::Infallible; + +struct MyStruct(i32); + +impl TryFrom<i8> for MyStruct { + //~^ infallible_try_from + type Error = !; + fn try_from(other: i8) -> Result<Self, !> { + Ok(Self(other.into())) + } +} + +impl TryFrom<i16> for MyStruct { + //~^ infallible_try_from + type Error = Infallible; + fn try_from(other: i16) -> Result<Self, Infallible> { + Ok(Self(other.into())) + } +} + +impl TryFrom<i64> for MyStruct { + type Error = i64; + fn try_from(other: i64) -> Result<Self, i64> { + Ok(Self(i32::try_from(other).map_err(|_| other)?)) + } +} + +fn main() { + // test code goes here +} diff --git a/src/tools/clippy/tests/ui/infallible_try_from.stderr b/src/tools/clippy/tests/ui/infallible_try_from.stderr new file mode 100644 index 00000000000..705b1188489 --- /dev/null +++ b/src/tools/clippy/tests/ui/infallible_try_from.stderr @@ -0,0 +1,23 @@ +error: infallible TryFrom impl; consider implementing From, instead + --> tests/ui/infallible_try_from.rs:8:1 + | +LL | impl TryFrom<i8> for MyStruct { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | +LL | type Error = !; + | - infallible error type + | + = note: `-D clippy::infallible-try-from` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::infallible_try_from)]` + +error: infallible TryFrom impl; consider implementing From, instead + --> tests/ui/infallible_try_from.rs:16:1 + | +LL | impl TryFrom<i16> for MyStruct { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | +LL | type Error = Infallible; + | ---------- infallible error type + +error: aborting due to 2 previous errors + diff --git a/src/tools/clippy/tests/ui/ip_constant.fixed b/src/tools/clippy/tests/ui/ip_constant.fixed new file mode 100644 index 00000000000..2e3389c1193 --- /dev/null +++ b/src/tools/clippy/tests/ui/ip_constant.fixed @@ -0,0 +1,107 @@ +#![warn(clippy::ip_constant)] +#![allow(dead_code)] +#![allow(clippy::identity_op)] +#![allow(clippy::eq_op)] + +fn literal_test1() { + use std::net::Ipv4Addr; + let _ = Ipv4Addr::LOCALHOST; + //~^ ip_constant + let _ = Ipv4Addr::BROADCAST; + //~^ ip_constant + let _ = Ipv4Addr::UNSPECIFIED; + //~^ ip_constant + + use std::net::Ipv6Addr; + let _ = Ipv6Addr::LOCALHOST; + //~^ ip_constant + let _ = Ipv6Addr::UNSPECIFIED; + //~^ ip_constant +} + +fn literal_test2() { + use std::net; + let _ = net::Ipv4Addr::LOCALHOST; + //~^ ip_constant + let _ = net::Ipv4Addr::BROADCAST; + //~^ ip_constant + let _ = net::Ipv4Addr::UNSPECIFIED; + //~^ ip_constant + + let _ = net::Ipv6Addr::LOCALHOST; + //~^ ip_constant + let _ = net::Ipv6Addr::UNSPECIFIED; + //~^ ip_constant +} + +fn literal_test3() { + let _ = std::net::Ipv4Addr::LOCALHOST; + //~^ ip_constant + let _ = std::net::Ipv4Addr::BROADCAST; + //~^ ip_constant + let _ = std::net::Ipv4Addr::UNSPECIFIED; + //~^ ip_constant + + let _ = std::net::Ipv6Addr::LOCALHOST; + //~^ ip_constant + let _ = std::net::Ipv6Addr::UNSPECIFIED; + //~^ ip_constant +} + +const CONST_U8_0: u8 = 0; +const CONST_U8_1: u8 = 1; +const CONST_U8_127: u8 = 127; +const CONST_U8_255: u8 = 255; + +const CONST_U16_0: u16 = 0; +const CONST_U16_1: u16 = 1; + +fn const_test1() { + use std::net::Ipv4Addr; + let _ = Ipv4Addr::LOCALHOST; + //~^ ip_constant + let _ = Ipv4Addr::BROADCAST; + //~^ ip_constant + let _ = Ipv4Addr::UNSPECIFIED; + //~^ ip_constant + + use std::net::Ipv6Addr; + let _ = Ipv6Addr::LOCALHOST; + + let _ = Ipv6Addr::UNSPECIFIED; +} + +fn const_test2() { + use std::net::Ipv4Addr; + let _ = Ipv4Addr::LOCALHOST; + //~^ ip_constant + let _ = Ipv4Addr::BROADCAST; + //~^ ip_constant + let _ = Ipv4Addr::UNSPECIFIED; + //~^ ip_constant + + use std::net::Ipv6Addr; + let _ = Ipv6Addr::LOCALHOST; + //~^ ip_constant + let _ = Ipv6Addr::LOCALHOST; + //~^ ip_constant +} + +macro_rules! ipv4_new { + ($a:expr, $b:expr, $c:expr, $d:expr) => { + std::net::Ipv4Addr::new($a, $b, $c, $d) + }; +} + +fn macro_test() { + let _ = ipv4_new!(127, 0, 0, 1); + // no lint + let _ = ipv4_new!(255, 255, 255, 255); + // no lint + let _ = ipv4_new!(0, 0, 0, 0); + // no lint +} + +fn main() { + // UI Test +} diff --git a/src/tools/clippy/tests/ui/ip_constant.rs b/src/tools/clippy/tests/ui/ip_constant.rs new file mode 100644 index 00000000000..15e0b0551ba --- /dev/null +++ b/src/tools/clippy/tests/ui/ip_constant.rs @@ -0,0 +1,127 @@ +#![warn(clippy::ip_constant)] +#![allow(dead_code)] +#![allow(clippy::identity_op)] +#![allow(clippy::eq_op)] + +fn literal_test1() { + use std::net::Ipv4Addr; + let _ = Ipv4Addr::new(127, 0, 0, 1); + //~^ ip_constant + let _ = Ipv4Addr::new(255, 255, 255, 255); + //~^ ip_constant + let _ = Ipv4Addr::new(0, 0, 0, 0); + //~^ ip_constant + + use std::net::Ipv6Addr; + let _ = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + //~^ ip_constant + let _ = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); + //~^ ip_constant +} + +fn literal_test2() { + use std::net; + let _ = net::Ipv4Addr::new(127, 0, 0, 1); + //~^ ip_constant + let _ = net::Ipv4Addr::new(255, 255, 255, 255); + //~^ ip_constant + let _ = net::Ipv4Addr::new(0, 0, 0, 0); + //~^ ip_constant + + let _ = net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + //~^ ip_constant + let _ = net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); + //~^ ip_constant +} + +fn literal_test3() { + let _ = std::net::Ipv4Addr::new(127, 0, 0, 1); + //~^ ip_constant + let _ = std::net::Ipv4Addr::new(255, 255, 255, 255); + //~^ ip_constant + let _ = std::net::Ipv4Addr::new(0, 0, 0, 0); + //~^ ip_constant + + let _ = std::net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + //~^ ip_constant + let _ = std::net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); + //~^ ip_constant +} + +const CONST_U8_0: u8 = 0; +const CONST_U8_1: u8 = 1; +const CONST_U8_127: u8 = 127; +const CONST_U8_255: u8 = 255; + +const CONST_U16_0: u16 = 0; +const CONST_U16_1: u16 = 1; + +fn const_test1() { + use std::net::Ipv4Addr; + let _ = Ipv4Addr::new(CONST_U8_127, CONST_U8_0, CONST_U8_0, CONST_U8_1); + //~^ ip_constant + let _ = Ipv4Addr::new(CONST_U8_255, CONST_U8_255, CONST_U8_255, CONST_U8_255); + //~^ ip_constant + let _ = Ipv4Addr::new(CONST_U8_0, CONST_U8_0, CONST_U8_0, CONST_U8_0); + //~^ ip_constant + + use std::net::Ipv6Addr; + let _ = Ipv6Addr::new( + //~^ ip_constant + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_1, + ); + + let _ = Ipv6Addr::new( + //~^ ip_constant + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + CONST_U16_0, + ); +} + +fn const_test2() { + use std::net::Ipv4Addr; + let _ = Ipv4Addr::new(126 + 1, 0, 0, 1); + //~^ ip_constant + let _ = Ipv4Addr::new(254 + CONST_U8_1, 255, { 255 - CONST_U8_0 }, CONST_U8_255); + //~^ ip_constant + let _ = Ipv4Addr::new(0, CONST_U8_255 - 255, 0, { 1 + 0 - 1 }); + //~^ ip_constant + + use std::net::Ipv6Addr; + let _ = Ipv6Addr::new(0 + CONST_U16_0, 0, 0, 0, 0, 0, 0, 1); + //~^ ip_constant + let _ = Ipv6Addr::new(0 + 0, 0, 0, 0, 0, { 2 - 1 - CONST_U16_1 }, 0, 1); + //~^ ip_constant +} + +macro_rules! ipv4_new { + ($a:expr, $b:expr, $c:expr, $d:expr) => { + std::net::Ipv4Addr::new($a, $b, $c, $d) + }; +} + +fn macro_test() { + let _ = ipv4_new!(127, 0, 0, 1); + // no lint + let _ = ipv4_new!(255, 255, 255, 255); + // no lint + let _ = ipv4_new!(0, 0, 0, 0); + // no lint +} + +fn main() { + // UI Test +} diff --git a/src/tools/clippy/tests/ui/ip_constant.stderr b/src/tools/clippy/tests/ui/ip_constant.stderr new file mode 100644 index 00000000000..3e984c6cb3b --- /dev/null +++ b/src/tools/clippy/tests/ui/ip_constant.stderr @@ -0,0 +1,338 @@ +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:8:13 + | +LL | let _ = Ipv4Addr::new(127, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::ip-constant` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ip_constant)]` +help: use + | +LL - let _ = Ipv4Addr::new(127, 0, 0, 1); +LL + let _ = Ipv4Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:10:13 + | +LL | let _ = Ipv4Addr::new(255, 255, 255, 255); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(255, 255, 255, 255); +LL + let _ = Ipv4Addr::BROADCAST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:12:13 + | +LL | let _ = Ipv4Addr::new(0, 0, 0, 0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(0, 0, 0, 0); +LL + let _ = Ipv4Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:16:13 + | +LL | let _ = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); +LL + let _ = Ipv6Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:18:13 + | +LL | let _ = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); +LL + let _ = Ipv6Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:24:13 + | +LL | let _ = net::Ipv4Addr::new(127, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = net::Ipv4Addr::new(127, 0, 0, 1); +LL + let _ = net::Ipv4Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:26:13 + | +LL | let _ = net::Ipv4Addr::new(255, 255, 255, 255); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = net::Ipv4Addr::new(255, 255, 255, 255); +LL + let _ = net::Ipv4Addr::BROADCAST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:28:13 + | +LL | let _ = net::Ipv4Addr::new(0, 0, 0, 0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = net::Ipv4Addr::new(0, 0, 0, 0); +LL + let _ = net::Ipv4Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:31:13 + | +LL | let _ = net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); +LL + let _ = net::Ipv6Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:33:13 + | +LL | let _ = net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); +LL + let _ = net::Ipv6Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:38:13 + | +LL | let _ = std::net::Ipv4Addr::new(127, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = std::net::Ipv4Addr::new(127, 0, 0, 1); +LL + let _ = std::net::Ipv4Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:40:13 + | +LL | let _ = std::net::Ipv4Addr::new(255, 255, 255, 255); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = std::net::Ipv4Addr::new(255, 255, 255, 255); +LL + let _ = std::net::Ipv4Addr::BROADCAST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:42:13 + | +LL | let _ = std::net::Ipv4Addr::new(0, 0, 0, 0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = std::net::Ipv4Addr::new(0, 0, 0, 0); +LL + let _ = std::net::Ipv4Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:45:13 + | +LL | let _ = std::net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = std::net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1); +LL + let _ = std::net::Ipv6Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:47:13 + | +LL | let _ = std::net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = std::net::Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0); +LL + let _ = std::net::Ipv6Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:61:13 + | +LL | let _ = Ipv4Addr::new(CONST_U8_127, CONST_U8_0, CONST_U8_0, CONST_U8_1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(CONST_U8_127, CONST_U8_0, CONST_U8_0, CONST_U8_1); +LL + let _ = Ipv4Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:63:13 + | +LL | let _ = Ipv4Addr::new(CONST_U8_255, CONST_U8_255, CONST_U8_255, CONST_U8_255); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(CONST_U8_255, CONST_U8_255, CONST_U8_255, CONST_U8_255); +LL + let _ = Ipv4Addr::BROADCAST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:65:13 + | +LL | let _ = Ipv4Addr::new(CONST_U8_0, CONST_U8_0, CONST_U8_0, CONST_U8_0); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(CONST_U8_0, CONST_U8_0, CONST_U8_0, CONST_U8_0); +LL + let _ = Ipv4Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:69:13 + | +LL | let _ = Ipv6Addr::new( + | _____________^ +LL | | +LL | | CONST_U16_0, +LL | | CONST_U16_0, +... | +LL | | CONST_U16_1, +LL | | ); + | |_____^ + | +help: use + | +LL - let _ = Ipv6Addr::new( +LL - +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_1, +LL - ); +LL + let _ = Ipv6Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:81:13 + | +LL | let _ = Ipv6Addr::new( + | _____________^ +LL | | +LL | | CONST_U16_0, +LL | | CONST_U16_0, +... | +LL | | CONST_U16_0, +LL | | ); + | |_____^ + | +help: use + | +LL - let _ = Ipv6Addr::new( +LL - +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - CONST_U16_0, +LL - ); +LL + let _ = Ipv6Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:96:13 + | +LL | let _ = Ipv4Addr::new(126 + 1, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(126 + 1, 0, 0, 1); +LL + let _ = Ipv4Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:98:13 + | +LL | let _ = Ipv4Addr::new(254 + CONST_U8_1, 255, { 255 - CONST_U8_0 }, CONST_U8_255); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(254 + CONST_U8_1, 255, { 255 - CONST_U8_0 }, CONST_U8_255); +LL + let _ = Ipv4Addr::BROADCAST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:100:13 + | +LL | let _ = Ipv4Addr::new(0, CONST_U8_255 - 255, 0, { 1 + 0 - 1 }); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv4Addr::new(0, CONST_U8_255 - 255, 0, { 1 + 0 - 1 }); +LL + let _ = Ipv4Addr::UNSPECIFIED; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:104:13 + | +LL | let _ = Ipv6Addr::new(0 + CONST_U16_0, 0, 0, 0, 0, 0, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv6Addr::new(0 + CONST_U16_0, 0, 0, 0, 0, 0, 0, 1); +LL + let _ = Ipv6Addr::LOCALHOST; + | + +error: hand-coded well-known IP address + --> tests/ui/ip_constant.rs:106:13 + | +LL | let _ = Ipv6Addr::new(0 + 0, 0, 0, 0, 0, { 2 - 1 - CONST_U16_1 }, 0, 1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use + | +LL - let _ = Ipv6Addr::new(0 + 0, 0, 0, 0, 0, { 2 - 1 - CONST_U16_1 }, 0, 1); +LL + let _ = Ipv6Addr::LOCALHOST; + | + +error: aborting due to 25 previous errors + diff --git a/src/tools/clippy/tests/ui/ip_constant_from_external.rs b/src/tools/clippy/tests/ui/ip_constant_from_external.rs new file mode 100644 index 00000000000..7fd27022f12 --- /dev/null +++ b/src/tools/clippy/tests/ui/ip_constant_from_external.rs @@ -0,0 +1,12 @@ +//@error-in-other-file: hand-coded well-known IP address +//@no-rustfix +#![warn(clippy::ip_constant)] + +fn external_constant_test() { + let _ = include!("localhost.txt"); + // lint in external file `localhost.txt` +} + +fn main() { + external_constant_test(); +} diff --git a/src/tools/clippy/tests/ui/ip_constant_from_external.stderr b/src/tools/clippy/tests/ui/ip_constant_from_external.stderr new file mode 100644 index 00000000000..99dd827d41f --- /dev/null +++ b/src/tools/clippy/tests/ui/ip_constant_from_external.stderr @@ -0,0 +1,16 @@ +error: hand-coded well-known IP address + --> tests/ui/localhost.txt:1:1 + | +LL | std::net::Ipv4Addr::new(127, 0, 0, 1) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::ip-constant` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ip_constant)]` +help: use + | +LL - std::net::Ipv4Addr::new(127, 0, 0, 1) +LL + std::net::Ipv4Addr::LOCALHOST + | + +error: aborting due to 1 previous error + diff --git a/src/tools/clippy/tests/ui/large_stack_frames.rs b/src/tools/clippy/tests/ui/large_stack_frames.rs index 3ed124f69ef..132f1450b6d 100644 --- a/src/tools/clippy/tests/ui/large_stack_frames.rs +++ b/src/tools/clippy/tests/ui/large_stack_frames.rs @@ -1,8 +1,7 @@ //@ normalize-stderr-test: "\b10000(08|16|32)\b" -> "100$$PTR" //@ normalize-stderr-test: "\b2500(060|120)\b" -> "250$$PTR" -#![allow(unused, incomplete_features)] +#![allow(unused)] #![warn(clippy::large_stack_frames)] -#![feature(unsized_locals)] use std::hint::black_box; @@ -11,11 +10,6 @@ fn generic<T: Default>() { black_box(&x); } -fn unsized_local() { - let x: dyn std::fmt::Display = *(Box::new(1) as Box<dyn std::fmt::Display>); - black_box(&x); -} - struct ArrayDefault<const N: usize>([u8; N]); impl<const N: usize> Default for ArrayDefault<N> { diff --git a/src/tools/clippy/tests/ui/large_stack_frames.stderr b/src/tools/clippy/tests/ui/large_stack_frames.stderr index 0ff49e9f5b3..79482e65c3e 100644 --- a/src/tools/clippy/tests/ui/large_stack_frames.stderr +++ b/src/tools/clippy/tests/ui/large_stack_frames.stderr @@ -1,5 +1,5 @@ error: this function may allocate 250$PTR bytes on the stack - --> tests/ui/large_stack_frames.rs:27:4 + --> tests/ui/large_stack_frames.rs:21:4 | LL | fn many_small_arrays() { | ^^^^^^^^^^^^^^^^^ @@ -13,7 +13,7 @@ LL | let x5 = [0u8; 500_000]; = help: to override `-D warnings` add `#[allow(clippy::large_stack_frames)]` error: this function may allocate 1000000 bytes on the stack - --> tests/ui/large_stack_frames.rs:38:4 + --> tests/ui/large_stack_frames.rs:32:4 | LL | fn large_return_value() -> ArrayDefault<1_000_000> { | ^^^^^^^^^^^^^^^^^^ ----------------------- this is the largest part, at 1000000 bytes for type `ArrayDefault<1000000>` @@ -21,7 +21,7 @@ LL | fn large_return_value() -> ArrayDefault<1_000_000> { = note: 1000000 bytes is larger than Clippy's configured `stack-size-threshold` of 512000 error: this function may allocate 100$PTR bytes on the stack - --> tests/ui/large_stack_frames.rs:44:4 + --> tests/ui/large_stack_frames.rs:38:4 | LL | fn large_fn_arg(x: ArrayDefault<1_000_000>) { | ^^^^^^^^^^^^ - `x` is the largest part, at 1000000 bytes for type `ArrayDefault<1000000>` @@ -29,7 +29,7 @@ LL | fn large_fn_arg(x: ArrayDefault<1_000_000>) { = note: 100$PTR bytes is larger than Clippy's configured `stack-size-threshold` of 512000 error: this function may allocate 100$PTR bytes on the stack - --> tests/ui/large_stack_frames.rs:51:13 + --> tests/ui/large_stack_frames.rs:45:13 | LL | let f = || black_box(&[0u8; 1_000_000]); | ^^^^^^^^^^^^^^----------------^ diff --git a/src/tools/clippy/tests/ui/localhost.txt b/src/tools/clippy/tests/ui/localhost.txt new file mode 100644 index 00000000000..4502ec2b234 --- /dev/null +++ b/src/tools/clippy/tests/ui/localhost.txt @@ -0,0 +1 @@ +std::net::Ipv4Addr::new(127, 0, 0, 1) \ No newline at end of file diff --git a/src/tools/clippy/tests/ui/manual_flatten.fixed b/src/tools/clippy/tests/ui/manual_flatten.fixed new file mode 100644 index 00000000000..cc1fbd25765 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_flatten.fixed @@ -0,0 +1,148 @@ +#![warn(clippy::manual_flatten)] +#![allow(clippy::useless_vec, clippy::uninlined_format_args)] + +fn main() { + // Test for loop over implicitly adjusted `Iterator` with `if let` expression + let x = vec![Some(1), Some(2), Some(3)]; + for y in x.into_iter().flatten() { + println!("{}", y); + } + + // Test for loop over implicitly adjusted `Iterator` with `if let` statement + let y: Vec<Result<i32, i32>> = vec![]; + for n in y.clone().into_iter().flatten() { + println!("{}", n); + } + + // Test for loop over by reference + for n in y.iter().flatten() { + println!("{}", n); + } + + // Test for loop over an implicit reference + let z = &y; + for n in z.iter().flatten() { + println!("{}", n); + } + + // Test for loop over `Iterator` with `if let` expression + let z = vec![Some(1), Some(2), Some(3)]; + let z = z.iter(); + for m in z.flatten() { + println!("{}", m); + } + + // Using the `None` variant should not trigger the lint + // Note: for an autofixable suggestion, the binding in the for loop has to take the + // name of the binding in the `if let` + let z = vec![Some(1), Some(2), Some(3)]; + for n in z { + if n.is_none() { + println!("Nada."); + } + } + + // Using the `Err` variant should not trigger the lint + for n in y.clone() { + if let Err(e) = n { + println!("Oops: {}!", e); + } + } + + // Having an else clause should not trigger the lint + for n in y.clone() { + if let Ok(n) = n { + println!("{}", n); + } else { + println!("Oops!"); + } + } + + let vec_of_ref = vec![&Some(1)]; + for n in vec_of_ref.iter().copied().flatten() { + println!("{:?}", n); + } + + let vec_of_ref = &vec_of_ref; + for n in vec_of_ref.iter().copied().flatten() { + println!("{:?}", n); + } + + let slice_of_ref = &[&Some(1)]; + for n in slice_of_ref.iter().copied().flatten() { + println!("{:?}", n); + } + + struct Test { + a: usize, + } + + let mut vec_of_struct = [Some(Test { a: 1 }), None]; + + // Usage of `if let` expression should not trigger lint + for n in vec_of_struct.iter_mut() { + if let Some(z) = n { + *n = None; + } + } + + // Using manual flatten should not trigger the lint + for n in vec![Some(1), Some(2), Some(3)].iter().flatten() { + println!("{}", n); + } + + // Using nested `Some` pattern should not trigger the lint + for n in vec![Some((1, Some(2)))] { + if let Some((_, Some(n))) = n { + println!("{}", n); + } + } + + macro_rules! inner { + ($id:ident / $new:pat => $action:expr) => { + if let Some($new) = $id { + $action; + } + }; + } + + // Usage of `if let` expression with macro should not trigger lint + for ab in [Some((1, 2)), Some((3, 4))] { + inner!(ab / (c, d) => println!("{c}-{d}")); + } + + macro_rules! args { + ($($arg:expr),*) => { + vec![$(Some($arg)),*] + }; + } + + // Usage of `if let` expression with macro should not trigger lint + for n in args!(1, 2, 3) { + if let Some(n) = n { + println!("{:?}", n); + } + } + + // This should trigger the lint, but the applicability is `MaybeIncorrect` + let z = vec![Some(1), Some(2), Some(3)]; + for n in z.into_iter().flatten() { + println!("{:?}", n); + } + + run_unformatted_tests(); +} + +#[rustfmt::skip] +fn run_unformatted_tests() { + // Skip rustfmt here on purpose so the suggestion does not fit in one line + for n in vec![ + //~^ manual_flatten + + Some(1), + Some(2), + Some(3) + ].iter().flatten() { + println!("{:?}", n); + } +} diff --git a/src/tools/clippy/tests/ui/manual_flatten.rs b/src/tools/clippy/tests/ui/manual_flatten.rs index f1a0053ef38..53b4ac7d3b6 100644 --- a/src/tools/clippy/tests/ui/manual_flatten.rs +++ b/src/tools/clippy/tests/ui/manual_flatten.rs @@ -1,6 +1,6 @@ #![warn(clippy::manual_flatten)] #![allow(clippy::useless_vec, clippy::uninlined_format_args)] -//@no-rustfix + fn main() { // Test for loop over implicitly adjusted `Iterator` with `if let` expression let x = vec![Some(1), Some(2), Some(3)]; @@ -130,6 +130,43 @@ fn main() { } } + macro_rules! inner { + ($id:ident / $new:pat => $action:expr) => { + if let Some($new) = $id { + $action; + } + }; + } + + // Usage of `if let` expression with macro should not trigger lint + for ab in [Some((1, 2)), Some((3, 4))] { + inner!(ab / (c, d) => println!("{c}-{d}")); + } + + macro_rules! args { + ($($arg:expr),*) => { + vec![$(Some($arg)),*] + }; + } + + // Usage of `if let` expression with macro should not trigger lint + for n in args!(1, 2, 3) { + if let Some(n) = n { + println!("{:?}", n); + } + } + + // This should trigger the lint, but the applicability is `MaybeIncorrect` + let z = vec![Some(1), Some(2), Some(3)]; + for n in z { + //~^ manual_flatten + + if let Some(n) = n { + println!("{:?}", n); + } + // foo + } + run_unformatted_tests(); } diff --git a/src/tools/clippy/tests/ui/manual_flatten.stderr b/src/tools/clippy/tests/ui/manual_flatten.stderr index 9a846fe17f3..eb39ee42071 100644 --- a/src/tools/clippy/tests/ui/manual_flatten.stderr +++ b/src/tools/clippy/tests/ui/manual_flatten.stderr @@ -1,10 +1,7 @@ error: unnecessary `if let` since only the `Some` variant of the iterator element is used --> tests/ui/manual_flatten.rs:7:5 | -LL | for n in x { - | ^ - help: try: `x.into_iter().flatten()` - | _____| - | | +LL | / for n in x { LL | | LL | | LL | | if let Some(y) = n { @@ -12,7 +9,7 @@ LL | | if let Some(y) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:10:9 | LL | / if let Some(y) = n { @@ -21,14 +18,17 @@ LL | | } | |_________^ = note: `-D clippy::manual-flatten` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::manual_flatten)]` +help: try + | +LL ~ for y in x.into_iter().flatten() { +LL + println!("{}", y); +LL + } + | error: unnecessary `if let` since only the `Ok` variant of the iterator element is used --> tests/ui/manual_flatten.rs:17:5 | -LL | for n in y.clone() { - | ^ --------- help: try: `y.clone().into_iter().flatten()` - | _____| - | | +LL | / for n in y.clone() { LL | | LL | | LL | | if let Ok(n) = n { @@ -37,21 +37,24 @@ LL | | }; LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:20:9 | LL | / if let Ok(n) = n { LL | | println!("{}", n); LL | | }; | |_________^ +help: try + | +LL ~ for n in y.clone().into_iter().flatten() { +LL + println!("{}", n); +LL + } + | error: unnecessary `if let` since only the `Ok` variant of the iterator element is used --> tests/ui/manual_flatten.rs:26:5 | -LL | for n in &y { - | ^ -- help: try: `y.iter().flatten()` - | _____| - | | +LL | / for n in &y { LL | | LL | | LL | | if let Ok(n) = n { @@ -59,21 +62,24 @@ LL | | if let Ok(n) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:29:9 | LL | / if let Ok(n) = n { LL | | println!("{}", n); LL | | } | |_________^ +help: try + | +LL ~ for n in y.iter().flatten() { +LL + println!("{}", n); +LL + } + | error: unnecessary `if let` since only the `Ok` variant of the iterator element is used --> tests/ui/manual_flatten.rs:36:5 | -LL | for n in z { - | ^ - help: try: `z.iter().flatten()` - | _____| - | | +LL | / for n in z { LL | | LL | | LL | | if let Ok(n) = n { @@ -81,21 +87,24 @@ LL | | if let Ok(n) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:39:9 | LL | / if let Ok(n) = n { LL | | println!("{}", n); LL | | } | |_________^ +help: try + | +LL ~ for n in z.iter().flatten() { +LL + println!("{}", n); +LL + } + | error: unnecessary `if let` since only the `Some` variant of the iterator element is used --> tests/ui/manual_flatten.rs:47:5 | -LL | for n in z { - | ^ - help: try: `z.flatten()` - | _____| - | | +LL | / for n in z { LL | | LL | | LL | | if let Some(m) = n { @@ -103,21 +112,24 @@ LL | | if let Some(m) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:50:9 | LL | / if let Some(m) = n { LL | | println!("{}", m); LL | | } | |_________^ +help: try + | +LL ~ for m in z.flatten() { +LL + println!("{}", m); +LL + } + | error: unnecessary `if let` since only the `Some` variant of the iterator element is used --> tests/ui/manual_flatten.rs:82:5 | -LL | for n in &vec_of_ref { - | ^ ----------- help: try: `vec_of_ref.iter().copied().flatten()` - | _____| - | | +LL | / for n in &vec_of_ref { LL | | LL | | LL | | if let Some(n) = n { @@ -125,21 +137,24 @@ LL | | if let Some(n) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:85:9 | LL | / if let Some(n) = n { LL | | println!("{:?}", n); LL | | } | |_________^ +help: try + | +LL ~ for n in vec_of_ref.iter().copied().flatten() { +LL + println!("{:?}", n); +LL + } + | error: unnecessary `if let` since only the `Some` variant of the iterator element is used --> tests/ui/manual_flatten.rs:91:5 | -LL | for n in vec_of_ref { - | ^ ---------- help: try: `vec_of_ref.iter().copied().flatten()` - | _____| - | | +LL | / for n in vec_of_ref { LL | | LL | | LL | | if let Some(n) = n { @@ -147,21 +162,24 @@ LL | | if let Some(n) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:94:9 | LL | / if let Some(n) = n { LL | | println!("{:?}", n); LL | | } | |_________^ +help: try + | +LL ~ for n in vec_of_ref.iter().copied().flatten() { +LL + println!("{:?}", n); +LL + } + | error: unnecessary `if let` since only the `Some` variant of the iterator element is used --> tests/ui/manual_flatten.rs:100:5 | -LL | for n in slice_of_ref { - | ^ ------------ help: try: `slice_of_ref.iter().copied().flatten()` - | _____| - | | +LL | / for n in slice_of_ref { LL | | LL | | LL | | if let Some(n) = n { @@ -169,16 +187,47 @@ LL | | if let Some(n) = n { LL | | } | |_____^ | -help: ...and remove the `if let` statement in the for loop +help: try `.flatten()` and remove the `if let` statement in the for loop --> tests/ui/manual_flatten.rs:103:9 | LL | / if let Some(n) = n { LL | | println!("{:?}", n); LL | | } | |_________^ +help: try + | +LL ~ for n in slice_of_ref.iter().copied().flatten() { +LL + println!("{:?}", n); +LL + } + | + +error: unnecessary `if let` since only the `Some` variant of the iterator element is used + --> tests/ui/manual_flatten.rs:161:5 + | +LL | / for n in z { +LL | | +LL | | +LL | | if let Some(n) = n { +... | +LL | | } + | |_____^ + | +help: try `.flatten()` and remove the `if let` statement in the for loop + --> tests/ui/manual_flatten.rs:164:9 + | +LL | / if let Some(n) = n { +LL | | println!("{:?}", n); +LL | | } + | |_________^ +help: try + | +LL ~ for n in z.into_iter().flatten() { +LL + println!("{:?}", n); +LL + } + | error: unnecessary `if let` since only the `Some` variant of the iterator element is used - --> tests/ui/manual_flatten.rs:139:5 + --> tests/ui/manual_flatten.rs:176:5 | LL | / for n in vec![ LL | | @@ -188,8 +237,8 @@ LL | | Some(1), LL | | } | |_____^ | -help: remove the `if let` statement in the for loop and then... - --> tests/ui/manual_flatten.rs:146:9 +help: try `.flatten()` and remove the `if let` statement in the for loop + --> tests/ui/manual_flatten.rs:183:9 | LL | / if let Some(n) = n { LL | | println!("{:?}", n); @@ -201,7 +250,9 @@ LL | for n in vec![ ... LL | Some(3) LL ~ ].iter().flatten() { +LL + println!("{:?}", n); +LL + } | -error: aborting due to 9 previous errors +error: aborting due to 10 previous errors diff --git a/src/tools/clippy/tests/ui/manual_swap_auto_fix.fixed b/src/tools/clippy/tests/ui/manual_swap_auto_fix.fixed index 28466ff3f9b..6cd81bafce8 100644 --- a/src/tools/clippy/tests/ui/manual_swap_auto_fix.fixed +++ b/src/tools/clippy/tests/ui/manual_swap_auto_fix.fixed @@ -55,3 +55,14 @@ fn swap8() { let i2 = 1; v.swap(i1 + i2, i2); } + +fn issue_14931() { + let mut v = [1, 2, 3, 4]; + + let mut i1 = 0; + for i2 in 0..4 { + v.swap(i1, i2); + + i1 += 2; + } +} diff --git a/src/tools/clippy/tests/ui/manual_swap_auto_fix.rs b/src/tools/clippy/tests/ui/manual_swap_auto_fix.rs index c9880e651cd..19dabfd833f 100644 --- a/src/tools/clippy/tests/ui/manual_swap_auto_fix.rs +++ b/src/tools/clippy/tests/ui/manual_swap_auto_fix.rs @@ -78,3 +78,17 @@ fn swap8() { v[i1 + i2] = v[i2]; v[i2] = tmp; } + +fn issue_14931() { + let mut v = [1, 2, 3, 4]; + + let mut i1 = 0; + for i2 in 0..4 { + let tmp = v[i1]; + //~^ manual_swap + v[i1] = v[i2]; + v[i2] = tmp; + + i1 += 2; + } +} diff --git a/src/tools/clippy/tests/ui/manual_swap_auto_fix.stderr b/src/tools/clippy/tests/ui/manual_swap_auto_fix.stderr index 7ab898fcc72..a0bb32233e2 100644 --- a/src/tools/clippy/tests/ui/manual_swap_auto_fix.stderr +++ b/src/tools/clippy/tests/ui/manual_swap_auto_fix.stderr @@ -92,5 +92,14 @@ LL | | v[i1 + i2] = v[i2]; LL | | v[i2] = tmp; | |________________^ help: try: `v.swap(i1 + i2, i2);` -error: aborting due to 8 previous errors +error: this looks like you are swapping elements of `v` manually + --> tests/ui/manual_swap_auto_fix.rs:87:9 + | +LL | / let tmp = v[i1]; +LL | | +LL | | v[i1] = v[i2]; +LL | | v[i2] = tmp; + | |____________________^ help: try: `v.swap(i1, i2);` + +error: aborting due to 9 previous errors diff --git a/src/tools/clippy/tests/ui/match_single_binding.fixed b/src/tools/clippy/tests/ui/match_single_binding.fixed index bdf39796ebf..e11dea35204 100644 --- a/src/tools/clippy/tests/ui/match_single_binding.fixed +++ b/src/tools/clippy/tests/ui/match_single_binding.fixed @@ -188,3 +188,19 @@ fn issue14634() { let id!(_a) = dbg!(b + 1); //~^^^ match_single_binding } + +mod issue14991 { + struct AnnoConstWOBlock { + inner: [(); { + let _n = 1; + 42 + }], + } + + struct AnnoConstWBlock { + inner: [(); { + let _n = 1; + 42 + }], + } +} diff --git a/src/tools/clippy/tests/ui/match_single_binding.rs b/src/tools/clippy/tests/ui/match_single_binding.rs index 419ff95d873..d498da30fc8 100644 --- a/src/tools/clippy/tests/ui/match_single_binding.rs +++ b/src/tools/clippy/tests/ui/match_single_binding.rs @@ -249,3 +249,21 @@ fn issue14634() { }; //~^^^ match_single_binding } + +mod issue14991 { + struct AnnoConstWOBlock { + inner: [(); match 1 { + //~^ match_single_binding + _n => 42, + }], + } + + struct AnnoConstWBlock { + inner: [(); { + match 1 { + //~^ match_single_binding + _n => 42, + } + }], + } +} diff --git a/src/tools/clippy/tests/ui/match_single_binding.stderr b/src/tools/clippy/tests/ui/match_single_binding.stderr index bdd0134a5f1..f274f80c81d 100644 --- a/src/tools/clippy/tests/ui/match_single_binding.stderr +++ b/src/tools/clippy/tests/ui/match_single_binding.stderr @@ -378,5 +378,38 @@ LL ~ let id!(b) = dbg!(3); LL + let id!(_a) = dbg!(b + 1); | -error: aborting due to 27 previous errors +error: this match could be written as a `let` statement + --> tests/ui/match_single_binding.rs:255:21 + | +LL | inner: [(); match 1 { + | _____________________^ +LL | | +LL | | _n => 42, +LL | | }], + | |_________^ + | +help: consider using a `let` statement + | +LL ~ inner: [(); { +LL + let _n = 1; +LL + 42 +LL ~ }], + | + +error: this match could be written as a `let` statement + --> tests/ui/match_single_binding.rs:263:13 + | +LL | / match 1 { +LL | | +LL | | _n => 42, +LL | | } + | |_____________^ + | +help: consider using a `let` statement + | +LL ~ let _n = 1; +LL + 42 + | + +error: aborting due to 29 previous errors diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.fixed b/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.fixed new file mode 100644 index 00000000000..7e0d4fccaae --- /dev/null +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.fixed @@ -0,0 +1,36 @@ +#![feature(const_trait_impl)] +#![warn(clippy::missing_const_for_fn)] + +// Reduced test case from https://github.com/rust-lang/rust-clippy/issues/14658 + +#[const_trait] +trait ConstTrait { + fn method(self); +} + +impl ConstTrait for u32 { + fn method(self) {} +} + +impl const ConstTrait for u64 { + fn method(self) {} +} + +fn cannot_be_const() { + 0u32.method(); +} + +//~v missing_const_for_fn +const fn can_be_const() { + 0u64.method(); +} + +// False negative, see FIXME comment in `clipy_utils::qualify_min_const` +fn could_be_const_but_does_not_trigger<T>(t: T) +where + T: const ConstTrait, +{ + t.method(); +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.rs b/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.rs new file mode 100644 index 00000000000..439da4622d7 --- /dev/null +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.rs @@ -0,0 +1,36 @@ +#![feature(const_trait_impl)] +#![warn(clippy::missing_const_for_fn)] + +// Reduced test case from https://github.com/rust-lang/rust-clippy/issues/14658 + +#[const_trait] +trait ConstTrait { + fn method(self); +} + +impl ConstTrait for u32 { + fn method(self) {} +} + +impl const ConstTrait for u64 { + fn method(self) {} +} + +fn cannot_be_const() { + 0u32.method(); +} + +//~v missing_const_for_fn +fn can_be_const() { + 0u64.method(); +} + +// False negative, see FIXME comment in `clipy_utils::qualify_min_const` +fn could_be_const_but_does_not_trigger<T>(t: T) +where + T: const ConstTrait, +{ + t.method(); +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.stderr b/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.stderr new file mode 100644 index 00000000000..b994b88fac6 --- /dev/null +++ b/src/tools/clippy/tests/ui/missing_const_for_fn/const_trait.stderr @@ -0,0 +1,17 @@ +error: this could be a `const fn` + --> tests/ui/missing_const_for_fn/const_trait.rs:24:1 + | +LL | / fn can_be_const() { +LL | | 0u64.method(); +LL | | } + | |_^ + | + = 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 fn can_be_const() { + | +++++ + +error: aborting due to 1 previous error + diff --git a/src/tools/clippy/tests/ui/needless_lifetimes.fixed b/src/tools/clippy/tests/ui/needless_lifetimes.fixed index ceea4480d0d..15ca409c95b 100644 --- a/src/tools/clippy/tests/ui/needless_lifetimes.fixed +++ b/src/tools/clippy/tests/ui/needless_lifetimes.fixed @@ -10,7 +10,7 @@ clippy::unnecessary_wraps, dyn_drop, clippy::get_first, - mismatched_lifetime_syntaxes, + mismatched_lifetime_syntaxes )] extern crate proc_macros; diff --git a/src/tools/clippy/tests/ui/needless_lifetimes.rs b/src/tools/clippy/tests/ui/needless_lifetimes.rs index 8432f9e6d2f..af9649d7298 100644 --- a/src/tools/clippy/tests/ui/needless_lifetimes.rs +++ b/src/tools/clippy/tests/ui/needless_lifetimes.rs @@ -10,7 +10,7 @@ clippy::unnecessary_wraps, dyn_drop, clippy::get_first, - mismatched_lifetime_syntaxes, + mismatched_lifetime_syntaxes )] extern crate proc_macros; diff --git a/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.fixed b/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.fixed index 23dbee5a084..6915e1984fb 100644 --- a/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.fixed +++ b/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.fixed @@ -195,3 +195,19 @@ impl PartialOrd for K { //~^ non_canonical_partial_ord_impl fn partial_cmp(&self, other: &Self) -> Option<Ordering> { Some(self.cmp(other)) } } + +// #14574, check that partial_cmp invokes other.cmp + +#[derive(Eq, PartialEq)] +struct L(u32); + +impl Ord for L { + fn cmp(&self, other: &Self) -> Ordering { + todo!(); + } +} + +impl PartialOrd for L { + //~^ non_canonical_partial_ord_impl + fn partial_cmp(&self, other: &Self) -> Option<Ordering> { Some(self.cmp(other)) } +} diff --git a/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.rs b/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.rs index 12f055a542b..7ce4cdc9aec 100644 --- a/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.rs +++ b/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.rs @@ -201,3 +201,21 @@ impl PartialOrd for K { Ordering::Greater.into() } } + +// #14574, check that partial_cmp invokes other.cmp + +#[derive(Eq, PartialEq)] +struct L(u32); + +impl Ord for L { + fn cmp(&self, other: &Self) -> Ordering { + todo!(); + } +} + +impl PartialOrd for L { + //~^ non_canonical_partial_ord_impl + fn partial_cmp(&self, other: &Self) -> Option<Ordering> { + Some(other.cmp(self)) + } +} diff --git a/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.stderr b/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.stderr index c7de968588f..9bd6b1f726d 100644 --- a/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.stderr +++ b/src/tools/clippy/tests/ui/non_canonical_partial_ord_impl.stderr @@ -44,5 +44,18 @@ LL | || } LL | | } | |__^ -error: aborting due to 3 previous errors +error: non-canonical implementation of `partial_cmp` on an `Ord` type + --> tests/ui/non_canonical_partial_ord_impl.rs:216:1 + | +LL | / impl PartialOrd for L { +LL | | +LL | | fn partial_cmp(&self, other: &Self) -> Option<Ordering> { + | | _____________________________________________________________- +LL | || Some(other.cmp(self)) +LL | || } + | ||_____- help: change this to: `{ Some(self.cmp(other)) }` +LL | | } + | |__^ + +error: aborting due to 4 previous errors diff --git a/src/tools/clippy/tests/ui/pointer_format.rs b/src/tools/clippy/tests/ui/pointer_format.rs new file mode 100644 index 00000000000..0621f966ad1 --- /dev/null +++ b/src/tools/clippy/tests/ui/pointer_format.rs @@ -0,0 +1,66 @@ +#![warn(clippy::pointer_format)] + +use core::fmt::Debug; +use core::marker::PhantomData; + +#[derive(Debug)] +struct ContainsPointerDeep { + w: WithPointer, +} + +struct ManualDebug { + ptr: *const u8, +} + +#[derive(Debug)] +struct WithPointer { + len: usize, + ptr: *const u8, +} + +impl std::fmt::Debug for ManualDebug { + fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { + f.write_str("ManualDebug") + } +} + +trait Foo { + type Assoc: Foo + Debug; +} + +#[derive(Debug)] +struct S<T: Foo + 'static>(&'static S<T::Assoc>, PhantomData<T>); + +#[allow(unused)] +fn unbounded<T: Foo + Debug + 'static>(s: &S<T>) { + format!("{s:?}"); +} + +fn main() { + let m = &(main as fn()); + let g = &0; + let o = &format!("{m:p}"); + //~^ pointer_format + let _ = format!("{m:?}"); + //~^ pointer_format + println!("{g:p}"); + //~^ pointer_format + panic!("{o:p}"); + //~^ pointer_format + let answer = 42; + let x = &raw const answer; + let arr = [0u8; 8]; + let with_ptr = WithPointer { len: 8, ptr: &arr as _ }; + let _ = format!("{x:?}"); + //~^ pointer_format + print!("{with_ptr:?}"); + //~^ pointer_format + let container = ContainsPointerDeep { w: with_ptr }; + print!("{container:?}"); + //~^ pointer_format + + let no_pointer = "foo"; + println!("{no_pointer:?}"); + let manual_debug = ManualDebug { ptr: &arr as _ }; + println!("{manual_debug:?}"); +} diff --git a/src/tools/clippy/tests/ui/pointer_format.stderr b/src/tools/clippy/tests/ui/pointer_format.stderr new file mode 100644 index 00000000000..21ba39b8f8c --- /dev/null +++ b/src/tools/clippy/tests/ui/pointer_format.stderr @@ -0,0 +1,47 @@ +error: pointer formatting detected + --> tests/ui/pointer_format.rs:42:23 + | +LL | let o = &format!("{m:p}"); + | ^^^^^ + | + = note: `-D clippy::pointer-format` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::pointer_format)]` + +error: pointer formatting detected + --> tests/ui/pointer_format.rs:44:22 + | +LL | let _ = format!("{m:?}"); + | ^^^^^ + +error: pointer formatting detected + --> tests/ui/pointer_format.rs:46:15 + | +LL | println!("{g:p}"); + | ^^^^^ + +error: pointer formatting detected + --> tests/ui/pointer_format.rs:48:13 + | +LL | panic!("{o:p}"); + | ^^^^^ + +error: pointer formatting detected + --> tests/ui/pointer_format.rs:54:22 + | +LL | let _ = format!("{x:?}"); + | ^^^^^ + +error: pointer formatting detected + --> tests/ui/pointer_format.rs:56:13 + | +LL | print!("{with_ptr:?}"); + | ^^^^^^^^^^^^ + +error: pointer formatting detected + --> tests/ui/pointer_format.rs:59:13 + | +LL | print!("{container:?}"); + | ^^^^^^^^^^^^^ + +error: aborting due to 7 previous errors + diff --git a/src/tools/clippy/tests/ui/print_literal.fixed b/src/tools/clippy/tests/ui/print_literal.fixed index 24c45a4a61b..ebfe19c700e 100644 --- a/src/tools/clippy/tests/ui/print_literal.fixed +++ b/src/tools/clippy/tests/ui/print_literal.fixed @@ -94,3 +94,14 @@ fn issue_13959() { " ); } + +fn issue_14930() { + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ print_literal + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ print_literal + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ print_literal + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ print_literal +} diff --git a/src/tools/clippy/tests/ui/print_literal.rs b/src/tools/clippy/tests/ui/print_literal.rs index 42ae589ca63..8f3d9be0698 100644 --- a/src/tools/clippy/tests/ui/print_literal.rs +++ b/src/tools/clippy/tests/ui/print_literal.rs @@ -95,3 +95,14 @@ fn issue_13959() { "# ); } + +fn issue_14930() { + println!("Hello {3} is {0:2$.1$}", 0.01, 2, 3, "x"); + //~^ print_literal + println!("Hello {2} is {0:3$.1$}", 0.01, 2, "x", 3); + //~^ print_literal + println!("Hello {1} is {0:3$.2$}", 0.01, "x", 2, 3); + //~^ print_literal + println!("Hello {0} is {1:3$.2$}", "x", 0.01, 2, 3); + //~^ print_literal +} diff --git a/src/tools/clippy/tests/ui/print_literal.stderr b/src/tools/clippy/tests/ui/print_literal.stderr index da663000686..1c378017d15 100644 --- a/src/tools/clippy/tests/ui/print_literal.stderr +++ b/src/tools/clippy/tests/ui/print_literal.stderr @@ -229,5 +229,53 @@ LL + bar LL ~ " | -error: aborting due to 18 previous errors +error: literal with an empty format string + --> tests/ui/print_literal.rs:100:52 + | +LL | println!("Hello {3} is {0:2$.1$}", 0.01, 2, 3, "x"); + | ^^^ + | +help: try + | +LL - println!("Hello {3} is {0:2$.1$}", 0.01, 2, 3, "x"); +LL + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: literal with an empty format string + --> tests/ui/print_literal.rs:102:49 + | +LL | println!("Hello {2} is {0:3$.1$}", 0.01, 2, "x", 3); + | ^^^ + | +help: try + | +LL - println!("Hello {2} is {0:3$.1$}", 0.01, 2, "x", 3); +LL + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: literal with an empty format string + --> tests/ui/print_literal.rs:104:46 + | +LL | println!("Hello {1} is {0:3$.2$}", 0.01, "x", 2, 3); + | ^^^ + | +help: try + | +LL - println!("Hello {1} is {0:3$.2$}", 0.01, "x", 2, 3); +LL + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: literal with an empty format string + --> tests/ui/print_literal.rs:106:40 + | +LL | println!("Hello {0} is {1:3$.2$}", "x", 0.01, 2, 3); + | ^^^ + | +help: try + | +LL - println!("Hello {0} is {1:3$.2$}", "x", 0.01, 2, 3); +LL + println!("Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: aborting due to 22 previous errors diff --git a/src/tools/clippy/tests/ui/semicolon_outside_block.fixed b/src/tools/clippy/tests/ui/semicolon_outside_block.fixed index 52fae9a3aff..a3be80b4928 100644 --- a/src/tools/clippy/tests/ui/semicolon_outside_block.fixed +++ b/src/tools/clippy/tests/ui/semicolon_outside_block.fixed @@ -96,3 +96,28 @@ fn main() { unit_fn_block() } + +fn issue14926() { + macro_rules! gen_code { + [$l:lifetime: $b:block, $b2: block $(,)?] => { + $l: loop { + $b + break $l; + } + $l: loop { + $b2 + break $l; + } + }; + } + + gen_code! { + 'root: + { + println!("Block1"); + }, + { + println!("Block2"); + }, + } +} diff --git a/src/tools/clippy/tests/ui/semicolon_outside_block.rs b/src/tools/clippy/tests/ui/semicolon_outside_block.rs index 5975e66fbb8..3b7bf68029f 100644 --- a/src/tools/clippy/tests/ui/semicolon_outside_block.rs +++ b/src/tools/clippy/tests/ui/semicolon_outside_block.rs @@ -96,3 +96,28 @@ fn main() { unit_fn_block() } + +fn issue14926() { + macro_rules! gen_code { + [$l:lifetime: $b:block, $b2: block $(,)?] => { + $l: loop { + $b + break $l; + } + $l: loop { + $b2 + break $l; + } + }; + } + + gen_code! { + 'root: + { + println!("Block1"); + }, + { + println!("Block2"); + }, + } +} diff --git a/src/tools/clippy/tests/ui/std_instead_of_core.fixed b/src/tools/clippy/tests/ui/std_instead_of_core.fixed index ab2e801eee2..1820ade422f 100644 --- a/src/tools/clippy/tests/ui/std_instead_of_core.fixed +++ b/src/tools/clippy/tests/ui/std_instead_of_core.fixed @@ -90,3 +90,9 @@ fn msrv_1_76(_: std::net::IpAddr) {} #[clippy::msrv = "1.77"] fn msrv_1_77(_: core::net::IpAddr) {} //~^ std_instead_of_core + +#[warn(clippy::std_instead_of_core)] +#[rustfmt::skip] +fn issue14982() { + use std::{collections::HashMap, hash::Hash}; +} diff --git a/src/tools/clippy/tests/ui/std_instead_of_core.rs b/src/tools/clippy/tests/ui/std_instead_of_core.rs index f760b3561ae..32c49330981 100644 --- a/src/tools/clippy/tests/ui/std_instead_of_core.rs +++ b/src/tools/clippy/tests/ui/std_instead_of_core.rs @@ -90,3 +90,9 @@ fn msrv_1_76(_: std::net::IpAddr) {} #[clippy::msrv = "1.77"] fn msrv_1_77(_: std::net::IpAddr) {} //~^ std_instead_of_core + +#[warn(clippy::std_instead_of_core)] +#[rustfmt::skip] +fn issue14982() { + use std::{collections::HashMap, hash::Hash}; +} diff --git a/src/tools/clippy/tests/ui/unit_arg.rs b/src/tools/clippy/tests/ui/unit_arg.rs index 22a6a26dab6..4208efad677 100644 --- a/src/tools/clippy/tests/ui/unit_arg.rs +++ b/src/tools/clippy/tests/ui/unit_arg.rs @@ -151,3 +151,27 @@ fn main() { bad(); ok(); } + +fn issue14857() { + let fn_take_unit = |_: ()| {}; + fn some_other_fn(_: &i32) {} + + macro_rules! mac { + (def) => { + Default::default() + }; + (func $f:expr) => { + $f() + }; + (nonempty_block $e:expr) => {{ + some_other_fn(&$e); + $e + }}; + } + fn_take_unit(mac!(def)); + //~^ unit_arg + fn_take_unit(mac!(func Default::default)); + //~^ unit_arg + fn_take_unit(mac!(nonempty_block Default::default())); + //~^ unit_arg +} diff --git a/src/tools/clippy/tests/ui/unit_arg.stderr b/src/tools/clippy/tests/ui/unit_arg.stderr index 6c333d9792d..0dcfb02b9fa 100644 --- a/src/tools/clippy/tests/ui/unit_arg.stderr +++ b/src/tools/clippy/tests/ui/unit_arg.stderr @@ -199,5 +199,26 @@ LL ~ foo(1); LL + Some(()) | -error: aborting due to 10 previous errors +error: passing a unit value to a function + --> tests/ui/unit_arg.rs:171:5 + | +LL | fn_take_unit(mac!(def)); + | ^^^^^^^^^^^^^^^^^^^^^^^ + | + +error: passing a unit value to a function + --> tests/ui/unit_arg.rs:173:5 + | +LL | fn_take_unit(mac!(func Default::default)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + +error: passing a unit value to a function + --> tests/ui/unit_arg.rs:175:5 + | +LL | fn_take_unit(mac!(nonempty_block Default::default())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + +error: aborting due to 13 previous errors diff --git a/src/tools/clippy/tests/ui/unit_arg_empty_blocks.fixed b/src/tools/clippy/tests/ui/unit_arg_empty_blocks.fixed deleted file mode 100644 index b045a33608d..00000000000 --- a/src/tools/clippy/tests/ui/unit_arg_empty_blocks.fixed +++ /dev/null @@ -1,34 +0,0 @@ -#![warn(clippy::unit_arg)] -#![allow(unused_must_use, unused_variables)] -#![allow(clippy::no_effect, clippy::uninlined_format_args)] - -use std::fmt::Debug; - -fn foo<T: Debug>(t: T) { - println!("{:?}", t); -} - -fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) { - println!("{:?}, {:?}, {:?}", t1, t2, t3); -} - -fn bad() { - foo(()); - //~^ unit_arg - foo3((), 2, 2); - //~^ unit_arg - foo(0); - taking_two_units((), ()); - //~^ unit_arg - foo(0); - foo(1); - taking_three_units((), (), ()); - //~^ unit_arg -} - -fn taking_two_units(a: (), b: ()) {} -fn taking_three_units(a: (), b: (), c: ()) {} - -fn main() { - bad(); -} diff --git a/src/tools/clippy/tests/ui/unit_arg_empty_blocks.rs b/src/tools/clippy/tests/ui/unit_arg_empty_blocks.rs deleted file mode 100644 index ab305913f3f..00000000000 --- a/src/tools/clippy/tests/ui/unit_arg_empty_blocks.rs +++ /dev/null @@ -1,31 +0,0 @@ -#![warn(clippy::unit_arg)] -#![allow(unused_must_use, unused_variables)] -#![allow(clippy::no_effect, clippy::uninlined_format_args)] - -use std::fmt::Debug; - -fn foo<T: Debug>(t: T) { - println!("{:?}", t); -} - -fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) { - println!("{:?}, {:?}, {:?}", t1, t2, t3); -} - -fn bad() { - foo({}); - //~^ unit_arg - foo3({}, 2, 2); - //~^ unit_arg - taking_two_units({}, foo(0)); - //~^ unit_arg - taking_three_units({}, foo(0), foo(1)); - //~^ unit_arg -} - -fn taking_two_units(a: (), b: ()) {} -fn taking_three_units(a: (), b: (), c: ()) {} - -fn main() { - bad(); -} diff --git a/src/tools/clippy/tests/ui/unit_arg_empty_blocks.stderr b/src/tools/clippy/tests/ui/unit_arg_empty_blocks.stderr deleted file mode 100644 index 2c686d58ecc..00000000000 --- a/src/tools/clippy/tests/ui/unit_arg_empty_blocks.stderr +++ /dev/null @@ -1,46 +0,0 @@ -error: passing a unit value to a function - --> tests/ui/unit_arg_empty_blocks.rs:16:5 - | -LL | foo({}); - | ^^^^--^ - | | - | help: use a unit literal instead: `()` - | - = note: `-D clippy::unit-arg` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::unit_arg)]` - -error: passing a unit value to a function - --> tests/ui/unit_arg_empty_blocks.rs:18:5 - | -LL | foo3({}, 2, 2); - | ^^^^^--^^^^^^^ - | | - | help: use a unit literal instead: `()` - -error: passing unit values to a function - --> tests/ui/unit_arg_empty_blocks.rs:20:5 - | -LL | taking_two_units({}, foo(0)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -help: move the expression in front of the call and replace it with the unit literal `()` - | -LL ~ foo(0); -LL ~ taking_two_units((), ()); - | - -error: passing unit values to a function - --> tests/ui/unit_arg_empty_blocks.rs:22:5 - | -LL | taking_three_units({}, foo(0), foo(1)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -help: move the expressions in front of the call and replace them with the unit literal `()` - | -LL ~ foo(0); -LL + foo(1); -LL ~ taking_three_units((), (), ()); - | - -error: aborting due to 4 previous errors - diff --git a/src/tools/clippy/tests/ui/unit_arg_fixable.fixed b/src/tools/clippy/tests/ui/unit_arg_fixable.fixed new file mode 100644 index 00000000000..03353a14081 --- /dev/null +++ b/src/tools/clippy/tests/ui/unit_arg_fixable.fixed @@ -0,0 +1,78 @@ +#![warn(clippy::unit_arg)] +#![allow(unused_must_use, unused_variables)] +#![allow(clippy::no_effect, clippy::uninlined_format_args)] + +use std::fmt::Debug; + +fn foo<T: Debug>(t: T) { + println!("{:?}", t); +} + +fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) { + println!("{:?}, {:?}, {:?}", t1, t2, t3); +} + +fn bad() { + foo(()); + //~^ unit_arg + foo3((), 2, 2); + //~^ unit_arg + foo(0); + taking_two_units((), ()); + //~^ unit_arg + foo(0); + foo(1); + taking_three_units((), (), ()); + //~^ unit_arg +} + +fn taking_two_units(a: (), b: ()) {} +fn taking_three_units(a: (), b: (), c: ()) {} + +fn main() { + bad(); +} + +fn issue14857() { + let fn_take_unit = |_: ()| {}; + fn_take_unit(()); + //~^ unit_arg + + fn some_other_fn(_: &i32) {} + + macro_rules! another_mac { + () => { + some_other_fn(&Default::default()) + }; + ($e:expr) => { + some_other_fn(&$e) + }; + } + + another_mac!(); + fn_take_unit(()); + //~^ unit_arg + another_mac!(1); + fn_take_unit(()); + //~^ unit_arg + + macro_rules! mac { + (nondef $e:expr) => { + $e + }; + (empty_block) => {{}}; + } + fn_take_unit(mac!(nondef ())); + //~^ unit_arg + mac!(empty_block); + fn_take_unit(()); + //~^ unit_arg + + fn def<T: Default>() -> T { + Default::default() + } + + let _: () = def(); + fn_take_unit(()); + //~^ unit_arg +} diff --git a/src/tools/clippy/tests/ui/unit_arg_fixable.rs b/src/tools/clippy/tests/ui/unit_arg_fixable.rs new file mode 100644 index 00000000000..03fd96efdf9 --- /dev/null +++ b/src/tools/clippy/tests/ui/unit_arg_fixable.rs @@ -0,0 +1,71 @@ +#![warn(clippy::unit_arg)] +#![allow(unused_must_use, unused_variables)] +#![allow(clippy::no_effect, clippy::uninlined_format_args)] + +use std::fmt::Debug; + +fn foo<T: Debug>(t: T) { + println!("{:?}", t); +} + +fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) { + println!("{:?}, {:?}, {:?}", t1, t2, t3); +} + +fn bad() { + foo({}); + //~^ unit_arg + foo3({}, 2, 2); + //~^ unit_arg + taking_two_units({}, foo(0)); + //~^ unit_arg + taking_three_units({}, foo(0), foo(1)); + //~^ unit_arg +} + +fn taking_two_units(a: (), b: ()) {} +fn taking_three_units(a: (), b: (), c: ()) {} + +fn main() { + bad(); +} + +fn issue14857() { + let fn_take_unit = |_: ()| {}; + fn_take_unit(Default::default()); + //~^ unit_arg + + fn some_other_fn(_: &i32) {} + + macro_rules! another_mac { + () => { + some_other_fn(&Default::default()) + }; + ($e:expr) => { + some_other_fn(&$e) + }; + } + + fn_take_unit(another_mac!()); + //~^ unit_arg + fn_take_unit(another_mac!(1)); + //~^ unit_arg + + macro_rules! mac { + (nondef $e:expr) => { + $e + }; + (empty_block) => {{}}; + } + fn_take_unit(mac!(nondef Default::default())); + //~^ unit_arg + fn_take_unit(mac!(empty_block)); + //~^ unit_arg + + fn def<T: Default>() -> T { + Default::default() + } + + fn_take_unit(def()); + //~^ unit_arg +} diff --git a/src/tools/clippy/tests/ui/unit_arg_fixable.stderr b/src/tools/clippy/tests/ui/unit_arg_fixable.stderr new file mode 100644 index 00000000000..ccd5aa8322f --- /dev/null +++ b/src/tools/clippy/tests/ui/unit_arg_fixable.stderr @@ -0,0 +1,110 @@ +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:16:5 + | +LL | foo({}); + | ^^^^--^ + | | + | help: use a unit literal instead: `()` + | + = note: `-D clippy::unit-arg` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::unit_arg)]` + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:18:5 + | +LL | foo3({}, 2, 2); + | ^^^^^--^^^^^^^ + | | + | help: use a unit literal instead: `()` + +error: passing unit values to a function + --> tests/ui/unit_arg_fixable.rs:20:5 + | +LL | taking_two_units({}, foo(0)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expression in front of the call and replace it with the unit literal `()` + | +LL ~ foo(0); +LL ~ taking_two_units((), ()); + | + +error: passing unit values to a function + --> tests/ui/unit_arg_fixable.rs:22:5 + | +LL | taking_three_units({}, foo(0), foo(1)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expressions in front of the call and replace them with the unit literal `()` + | +LL ~ foo(0); +LL + foo(1); +LL ~ taking_three_units((), (), ()); + | + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:35:5 + | +LL | fn_take_unit(Default::default()); + | ^^^^^^^^^^^^^------------------^ + | | + | help: use a unit literal instead: `()` + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:49:5 + | +LL | fn_take_unit(another_mac!()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expression in front of the call and replace it with the unit literal `()` + | +LL ~ another_mac!(); +LL ~ fn_take_unit(()); + | + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:51:5 + | +LL | fn_take_unit(another_mac!(1)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expression in front of the call and replace it with the unit literal `()` + | +LL ~ another_mac!(1); +LL ~ fn_take_unit(()); + | + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:60:5 + | +LL | fn_take_unit(mac!(nondef Default::default())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^------------------^^ + | | + | help: use a unit literal instead: `()` + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:62:5 + | +LL | fn_take_unit(mac!(empty_block)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expression in front of the call and replace it with the unit literal `()` + | +LL ~ mac!(empty_block); +LL ~ fn_take_unit(()); + | + +error: passing a unit value to a function + --> tests/ui/unit_arg_fixable.rs:69:5 + | +LL | fn_take_unit(def()); + | ^^^^^^^^^^^^^^^^^^^ + | +help: move the expression in front of the call and replace it with the unit literal `()` + | +LL ~ let _: () = def(); +LL ~ fn_take_unit(()); + | + +error: aborting due to 10 previous errors + diff --git a/src/tools/clippy/tests/ui/unused_unit.edition2021.fixed b/src/tools/clippy/tests/ui/unused_unit.edition2021.fixed index 93dd58b8e9d..def8ef86e3c 100644 --- a/src/tools/clippy/tests/ui/unused_unit.edition2021.fixed +++ b/src/tools/clippy/tests/ui/unused_unit.edition2021.fixed @@ -143,4 +143,10 @@ mod issue14577 { todo!() } } -} \ No newline at end of file +} + +mod pr14962 { + #[allow(unused_parens)] + type UnusedParensButNoUnit = Box<dyn (Fn())>; +} + diff --git a/src/tools/clippy/tests/ui/unused_unit.edition2024.fixed b/src/tools/clippy/tests/ui/unused_unit.edition2024.fixed index 987d901b97d..f908b958b19 100644 --- a/src/tools/clippy/tests/ui/unused_unit.edition2024.fixed +++ b/src/tools/clippy/tests/ui/unused_unit.edition2024.fixed @@ -143,4 +143,10 @@ mod issue14577 { todo!() } } -} \ No newline at end of file +} + +mod pr14962 { + #[allow(unused_parens)] + type UnusedParensButNoUnit = Box<dyn (Fn())>; +} + diff --git a/src/tools/clippy/tests/ui/unused_unit.rs b/src/tools/clippy/tests/ui/unused_unit.rs index b7645f7b6a2..7298ec40cc2 100644 --- a/src/tools/clippy/tests/ui/unused_unit.rs +++ b/src/tools/clippy/tests/ui/unused_unit.rs @@ -143,4 +143,10 @@ mod issue14577 { todo!() } } -} \ No newline at end of file +} + +mod pr14962 { + #[allow(unused_parens)] + type UnusedParensButNoUnit = Box<dyn (Fn())>; +} + diff --git a/src/tools/clippy/tests/ui/write_literal.fixed b/src/tools/clippy/tests/ui/write_literal.fixed index e84f768e33d..29352fd468e 100644 --- a/src/tools/clippy/tests/ui/write_literal.fixed +++ b/src/tools/clippy/tests/ui/write_literal.fixed @@ -87,3 +87,15 @@ fn issue_13959() { " ); } + +fn issue_14930() { + let mut v = Vec::new(); + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ write_literal + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ write_literal + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ write_literal + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + //~^ write_literal +} diff --git a/src/tools/clippy/tests/ui/write_literal.rs b/src/tools/clippy/tests/ui/write_literal.rs index fc29fcbede7..92872752759 100644 --- a/src/tools/clippy/tests/ui/write_literal.rs +++ b/src/tools/clippy/tests/ui/write_literal.rs @@ -88,3 +88,15 @@ fn issue_13959() { "# ); } + +fn issue_14930() { + let mut v = Vec::new(); + writeln!(v, "Hello {3} is {0:2$.1$}", 0.01, 2, 3, "x"); + //~^ write_literal + writeln!(v, "Hello {2} is {0:3$.1$}", 0.01, 2, "x", 3); + //~^ write_literal + writeln!(v, "Hello {1} is {0:3$.2$}", 0.01, "x", 2, 3); + //~^ write_literal + writeln!(v, "Hello {0} is {1:3$.2$}", "x", 0.01, 2, 3); + //~^ write_literal +} diff --git a/src/tools/clippy/tests/ui/write_literal.stderr b/src/tools/clippy/tests/ui/write_literal.stderr index d53c2a7de2e..ca37406c811 100644 --- a/src/tools/clippy/tests/ui/write_literal.stderr +++ b/src/tools/clippy/tests/ui/write_literal.stderr @@ -181,5 +181,53 @@ LL + bar LL ~ " | -error: aborting due to 14 previous errors +error: literal with an empty format string + --> tests/ui/write_literal.rs:94:55 + | +LL | writeln!(v, "Hello {3} is {0:2$.1$}", 0.01, 2, 3, "x"); + | ^^^ + | +help: try + | +LL - writeln!(v, "Hello {3} is {0:2$.1$}", 0.01, 2, 3, "x"); +LL + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: literal with an empty format string + --> tests/ui/write_literal.rs:96:52 + | +LL | writeln!(v, "Hello {2} is {0:3$.1$}", 0.01, 2, "x", 3); + | ^^^ + | +help: try + | +LL - writeln!(v, "Hello {2} is {0:3$.1$}", 0.01, 2, "x", 3); +LL + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: literal with an empty format string + --> tests/ui/write_literal.rs:98:49 + | +LL | writeln!(v, "Hello {1} is {0:3$.2$}", 0.01, "x", 2, 3); + | ^^^ + | +help: try + | +LL - writeln!(v, "Hello {1} is {0:3$.2$}", 0.01, "x", 2, 3); +LL + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: literal with an empty format string + --> tests/ui/write_literal.rs:100:43 + | +LL | writeln!(v, "Hello {0} is {1:3$.2$}", "x", 0.01, 2, 3); + | ^^^ + | +help: try + | +LL - writeln!(v, "Hello {0} is {1:3$.2$}", "x", 0.01, 2, 3); +LL + writeln!(v, "Hello x is {0:2$.1$}", 0.01, 2, 3); + | + +error: aborting due to 18 previous errors diff --git a/src/tools/clippy/tests/ui/zombie_processes.rs b/src/tools/clippy/tests/ui/zombie_processes.rs index 395f9dd2def..e81b5fd4f3e 100644 --- a/src/tools/clippy/tests/ui/zombie_processes.rs +++ b/src/tools/clippy/tests/ui/zombie_processes.rs @@ -198,3 +198,13 @@ mod issue14677 { child.wait().unwrap(); } } + +fn issue14911() -> std::io::Result<String> { + let (mut recv, send) = std::io::pipe()?; + let mut command = Command::new("ls") + .stdout(send.try_clone()?) + .spawn() + .expect("Could not spawn new process..."); + command.wait()?; + Ok("".into()) +} diff --git a/src/tools/clippy/util/gh-pages/script.js b/src/tools/clippy/util/gh-pages/script.js index fec883938d6..285aa34e701 100644 --- a/src/tools/clippy/util/gh-pages/script.js +++ b/src/tools/clippy/util/gh-pages/script.js @@ -602,7 +602,7 @@ filters.filterLints(); updateLintCount(); function updateLintCount() { - const allLints = filters.getAllLints(); + const allLints = filters.getAllLints().filter(lint => lint.group != "deprecated"); const totalLints = allLints.length; const countElement = document.getElementById("lint-count"); |