From f47ad710595c1d87daa8f6b67045574c7304f83e Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Thu, 12 Dec 2024 10:37:37 +0000 Subject: Eliminate PatKind::Path --- tests/ui/thir-print/thir-tree-match.stdout | 52 +++++++++++++++--------------- 1 file changed, 26 insertions(+), 26 deletions(-) (limited to 'tests') diff --git a/tests/ui/thir-print/thir-tree-match.stdout b/tests/ui/thir-print/thir-tree-match.stdout index 916f296ccfc..910582ae4d9 100644 --- a/tests/ui/thir-print/thir-tree-match.stdout +++ b/tests/ui/thir-print/thir-tree-match.stdout @@ -26,16 +26,16 @@ params: [ body: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(28)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:15:32: 21:2 (#0) kind: Scope { - region_scope: Node(26) - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).26)) + region_scope: Node(28) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).28)) value: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(28)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:15:32: 21:2 (#0) kind: Block { @@ -47,7 +47,7 @@ body: expr: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(28)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:16:5: 20:6 (#0) kind: Scope { @@ -56,14 +56,14 @@ body: value: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(28)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:16:5: 20:6 (#0) kind: Match { scrutinee: Expr { ty: Foo - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(28)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:16:11: 16:14 (#0) kind: Scope { @@ -72,7 +72,7 @@ body: value: Expr { ty: Foo - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(28)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:16:11: 16:14 (#0) kind: VarRef { @@ -123,16 +123,16 @@ body: body: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(13)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(14)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:17:36: 17:40 (#0) kind: Scope { - region_scope: Node(14) - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).14)) + region_scope: Node(15) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).15)) value: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(13)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(14)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:17:36: 17:40 (#0) kind: Literal( lit: Spanned { node: Bool(true), span: $DIR/thir-tree-match.rs:17:36: 17:40 (#0) }, neg: false) @@ -140,8 +140,8 @@ body: } } } - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).13)) - scope: Node(13) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).14)) + scope: Node(14) span: $DIR/thir-tree-match.rs:17:9: 17:40 (#0) } Arm { @@ -175,16 +175,16 @@ body: body: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(19)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(20)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:18:27: 18:32 (#0) kind: Scope { - region_scope: Node(20) - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).20)) + region_scope: Node(21) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).21)) value: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(19)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(20)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:18:27: 18:32 (#0) kind: Literal( lit: Spanned { node: Bool(false), span: $DIR/thir-tree-match.rs:18:27: 18:32 (#0) }, neg: false) @@ -192,8 +192,8 @@ body: } } } - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).19)) - scope: Node(19) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).20)) + scope: Node(20) span: $DIR/thir-tree-match.rs:18:9: 18:32 (#0) } Arm { @@ -219,16 +219,16 @@ body: body: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(24)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:19:24: 19:28 (#0) kind: Scope { - region_scope: Node(25) - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).25)) + region_scope: Node(27) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).27)) value: Expr { ty: bool - temp_lifetime: TempLifetime { temp_lifetime: Some(Node(24)), backwards_incompatible: None } + temp_lifetime: TempLifetime { temp_lifetime: Some(Node(26)), backwards_incompatible: None } span: $DIR/thir-tree-match.rs:19:24: 19:28 (#0) kind: Literal( lit: Spanned { node: Bool(true), span: $DIR/thir-tree-match.rs:19:24: 19:28 (#0) }, neg: false) @@ -236,8 +236,8 @@ body: } } } - lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).24)) - scope: Node(24) + lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).26)) + scope: Node(26) span: $DIR/thir-tree-match.rs:19:9: 19:28 (#0) } ] -- cgit 1.4.1-3-g733a5 From 8f09abb49757a65f143c6794fcb22a70945e67d1 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Wed, 29 Jan 2025 08:38:56 +0000 Subject: Add regression test showing we don't realize some consts are used --- tests/ui/lint/dead-code/lint-dead-code-1.rs | 2 ++ tests/ui/lint/dead-code/lint-dead-code-1.stderr | 14 +++++++------- tests/ui/pattern/issue-110508.rs | 8 +++++++- tests/ui/pattern/issue-110508.stderr | 17 +++++++++++++++++ 4 files changed, 33 insertions(+), 8 deletions(-) create mode 100644 tests/ui/pattern/issue-110508.stderr (limited to 'tests') diff --git a/tests/ui/lint/dead-code/lint-dead-code-1.rs b/tests/ui/lint/dead-code/lint-dead-code-1.rs index ddcafedf7bc..a7f654b5d8b 100644 --- a/tests/ui/lint/dead-code/lint-dead-code-1.rs +++ b/tests/ui/lint/dead-code/lint-dead-code-1.rs @@ -29,6 +29,7 @@ const used_const: isize = 0; pub const used_const2: isize = used_const; const USED_CONST: isize = 1; const CONST_USED_IN_ENUM_DISCRIMINANT: isize = 11; +const CONST_USED_IN_RANGE_PATTERN: isize = 12; pub type typ = *const UsedStruct4; pub struct PubStruct; @@ -81,6 +82,7 @@ pub fn pub_fn() { match i { USED_STATIC => (), USED_CONST => (), + CONST_USED_IN_RANGE_PATTERN..100 => {} _ => () } f::(); diff --git a/tests/ui/lint/dead-code/lint-dead-code-1.stderr b/tests/ui/lint/dead-code/lint-dead-code-1.stderr index eb728b5b930..c4410114cea 100644 --- a/tests/ui/lint/dead-code/lint-dead-code-1.stderr +++ b/tests/ui/lint/dead-code/lint-dead-code-1.stderr @@ -17,19 +17,19 @@ LL | const priv_const: isize = 0; | ^^^^^^^^^^ error: struct `PrivStruct` is never constructed - --> $DIR/lint-dead-code-1.rs:35:8 + --> $DIR/lint-dead-code-1.rs:36:8 | LL | struct PrivStruct; | ^^^^^^^^^^ error: enum `priv_enum` is never used - --> $DIR/lint-dead-code-1.rs:64:6 + --> $DIR/lint-dead-code-1.rs:65:6 | LL | enum priv_enum { foo2, bar2 } | ^^^^^^^^^ error: variant `bar3` is never constructed - --> $DIR/lint-dead-code-1.rs:67:5 + --> $DIR/lint-dead-code-1.rs:68:5 | LL | enum used_enum { | --------- variant in this enum @@ -38,25 +38,25 @@ LL | bar3 | ^^^^ error: function `priv_fn` is never used - --> $DIR/lint-dead-code-1.rs:88:4 + --> $DIR/lint-dead-code-1.rs:90:4 | LL | fn priv_fn() { | ^^^^^^^ error: function `foo` is never used - --> $DIR/lint-dead-code-1.rs:93:4 + --> $DIR/lint-dead-code-1.rs:95:4 | LL | fn foo() { | ^^^ error: function `bar` is never used - --> $DIR/lint-dead-code-1.rs:98:4 + --> $DIR/lint-dead-code-1.rs:100:4 | LL | fn bar() { | ^^^ error: function `baz` is never used - --> $DIR/lint-dead-code-1.rs:102:4 + --> $DIR/lint-dead-code-1.rs:104:4 | LL | fn baz() -> impl Copy { | ^^^ diff --git a/tests/ui/pattern/issue-110508.rs b/tests/ui/pattern/issue-110508.rs index 6ed0476183e..980d8d52f1d 100644 --- a/tests/ui/pattern/issue-110508.rs +++ b/tests/ui/pattern/issue-110508.rs @@ -1,4 +1,4 @@ -//@ run-pass +#![deny(dead_code)] #[derive(PartialEq, Eq)] pub enum Foo { @@ -11,6 +11,7 @@ impl Foo { const A2: Foo = Self::FooA(()); const A3: Self = Foo::FooA(()); const A4: Self = Self::FooA(()); + const A5: u32 = 1; //~ ERROR: dead_code } fn main() { @@ -35,4 +36,9 @@ fn main() { Foo::A4 => {}, _ => {}, } + + match 3 { + Foo::A5..5 => {} + _ => {} + } } diff --git a/tests/ui/pattern/issue-110508.stderr b/tests/ui/pattern/issue-110508.stderr new file mode 100644 index 00000000000..aaec9116769 --- /dev/null +++ b/tests/ui/pattern/issue-110508.stderr @@ -0,0 +1,17 @@ +error: associated constant `A5` is never used + --> $DIR/issue-110508.rs:14:11 + | +LL | impl Foo { + | -------- associated constant in this implementation +... +LL | const A5: u32 = 1; + | ^^ + | +note: the lint level is defined here + --> $DIR/issue-110508.rs:1:9 + | +LL | #![deny(dead_code)] + | ^^^^^^^^^ + +error: aborting due to 1 previous error + -- cgit 1.4.1-3-g733a5 From 559648a0a4c942993c321d999f708e64f169b245 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Wed, 29 Jan 2025 08:52:43 +0000 Subject: Handle all `PatExpr`s in dead code analysis --- compiler/rustc_passes/src/dead.rs | 17 ++++++++++++----- tests/ui/pattern/issue-110508.rs | 4 +++- tests/ui/pattern/issue-110508.stderr | 17 ----------------- 3 files changed, 15 insertions(+), 23 deletions(-) delete mode 100644 tests/ui/pattern/issue-110508.stderr (limited to 'tests') diff --git a/compiler/rustc_passes/src/dead.rs b/compiler/rustc_passes/src/dead.rs index bc2bebdfef6..95f18eaa7ef 100644 --- a/compiler/rustc_passes/src/dead.rs +++ b/compiler/rustc_passes/src/dead.rs @@ -13,7 +13,7 @@ use rustc_errors::MultiSpan; use rustc_hir::def::{CtorOf, DefKind, Res}; use rustc_hir::def_id::{DefId, LocalDefId, LocalModDefId}; use rustc_hir::intravisit::{self, Visitor}; -use rustc_hir::{self as hir, Node, PatExpr, PatExprKind, PatKind, TyKind}; +use rustc_hir::{self as hir, Node, PatKind, TyKind}; use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; use rustc_middle::middle::privacy::Level; use rustc_middle::query::Providers; @@ -636,10 +636,6 @@ impl<'tcx> Visitor<'tcx> for MarkSymbolVisitor<'tcx> { let res = self.typeck_results().qpath_res(path, pat.hir_id); self.handle_field_pattern_match(pat, res, fields); } - PatKind::Expr(PatExpr { kind: PatExprKind::Path(ref qpath), hir_id, .. }) => { - let res = self.typeck_results().qpath_res(qpath, *hir_id); - self.handle_res(res); - } PatKind::TupleStruct(ref qpath, fields, dotdot) => { let res = self.typeck_results().qpath_res(qpath, pat.hir_id); self.handle_tuple_field_pattern_match(pat, res, fields, dotdot); @@ -651,6 +647,17 @@ impl<'tcx> Visitor<'tcx> for MarkSymbolVisitor<'tcx> { self.in_pat = false; } + fn visit_pat_expr(&mut self, expr: &'tcx rustc_hir::PatExpr<'tcx>) { + match &expr.kind { + rustc_hir::PatExprKind::Path(qpath) => { + let res = self.typeck_results().qpath_res(qpath, expr.hir_id); + self.handle_res(res); + } + _ => {} + } + intravisit::walk_pat_expr(self, expr); + } + fn visit_path(&mut self, path: &hir::Path<'tcx>, _: hir::HirId) { self.handle_res(path.res); intravisit::walk_path(self, path); diff --git a/tests/ui/pattern/issue-110508.rs b/tests/ui/pattern/issue-110508.rs index 980d8d52f1d..74a8d673e83 100644 --- a/tests/ui/pattern/issue-110508.rs +++ b/tests/ui/pattern/issue-110508.rs @@ -1,3 +1,5 @@ +//@ run-pass + #![deny(dead_code)] #[derive(PartialEq, Eq)] @@ -11,7 +13,7 @@ impl Foo { const A2: Foo = Self::FooA(()); const A3: Self = Foo::FooA(()); const A4: Self = Self::FooA(()); - const A5: u32 = 1; //~ ERROR: dead_code + const A5: u32 = 1; } fn main() { diff --git a/tests/ui/pattern/issue-110508.stderr b/tests/ui/pattern/issue-110508.stderr deleted file mode 100644 index aaec9116769..00000000000 --- a/tests/ui/pattern/issue-110508.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error: associated constant `A5` is never used - --> $DIR/issue-110508.rs:14:11 - | -LL | impl Foo { - | -------- associated constant in this implementation -... -LL | const A5: u32 = 1; - | ^^ - | -note: the lint level is defined here - --> $DIR/issue-110508.rs:1:9 - | -LL | #![deny(dead_code)] - | ^^^^^^^^^ - -error: aborting due to 1 previous error - -- cgit 1.4.1-3-g733a5