Don't require visit_body to take a lifetime that must outlive the function call

Author: oli-obk

compiler/rustc_hir/src/intravisit.rs

@@ -299,7 +299,7 @@ pub trait Visitor<'v>: Sized {
         walk_item(self, i)
     }
 
-    fn visit_body(&mut self, b: &'v Body<'v>) -> Self::Result {
+    fn visit_body(&mut self, b: &Body<'v>) -> Self::Result {
         walk_body(self, b)
     }
 
@@ -578,7 +578,7 @@ pub fn walk_item<'v, V: Visitor<'v>>(visitor: &mut V, item: &'v Item<'v>) -> V::
     V::Result::output()
 }
 
-pub fn walk_body<'v, V: Visitor<'v>>(visitor: &mut V, body: &'v Body<'v>) -> V::Result {
+pub fn walk_body<'v, V: Visitor<'v>>(visitor: &mut V, body: &Body<'v>) -> V::Result {
     walk_list!(visitor, visit_param, body.params);
     visitor.visit_expr(body.value)
 }

compiler/rustc_hir_analysis/src/check/region.rs

@@ -818,7 +818,7 @@ impl<'tcx> Visitor<'tcx> for RegionResolutionVisitor<'tcx> {
         resolve_block(self, b);
     }
 
-    fn visit_body(&mut self, body: &'tcx hir::Body<'tcx>) {
+    fn visit_body(&mut self, body: &hir::Body<'tcx>) {
         let body_id = body.id();
         let owner_id = self.tcx.hir().body_owner_def_id(body_id);
 

compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs

@@ -1163,7 +1163,7 @@ impl<'a, 'tcx> Visitor<'tcx> for FindInferSourceVisitor<'a, 'tcx> {
 
     /// For closures, we first visit the parameters and then the content,
     /// as we prefer those.
-    fn visit_body(&mut self, body: &'tcx Body<'tcx>) {
+    fn visit_body(&mut self, body: &Body<'tcx>) {
         for param in body.params {
             debug!(
                 "param: span {:?}, ty_span {:?}, pat.span {:?}",

compiler/rustc_infer/src/infer/error_reporting/suggest.rs

@@ -578,10 +578,6 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
                     walk_stmt(self, ex)
                 }
             }
-
-            fn visit_body(&mut self, body: &'v hir::Body<'v>) -> Self::Result {
-                hir::intravisit::walk_body(self, body)
-            }
         }
 
         self.tcx.hir().maybe_body_owned_by(cause.body_id).and_then(|body_id| {

compiler/rustc_lint/src/late.rs

@@ -125,7 +125,7 @@ impl<'tcx, T: LateLintPass<'tcx>> hir_visit::Visitor<'tcx> for LateContextAndPas
         });
     }
 
-    fn visit_body(&mut self, body: &'tcx hir::Body<'tcx>) {
+    fn visit_body(&mut self, body: &hir::Body<'tcx>) {
         lint_callback!(self, check_body, body);
         hir_visit::walk_body(self, body);
         lint_callback!(self, check_body_post, body);

compiler/rustc_lint/src/non_local_def.rs

@@ -68,11 +68,11 @@ impl_lint_pass!(NonLocalDefinitions => [NON_LOCAL_DEFINITIONS]);
 // instead check_mod is called after every body has been handled.
 
 impl<'tcx> LateLintPass<'tcx> for NonLocalDefinitions {
-    fn check_body(&mut self, _cx: &LateContext<'tcx>, _body: &'tcx Body<'tcx>) {
+    fn check_body(&mut self, _cx: &LateContext<'tcx>, _body: &Body<'tcx>) {
         self.body_depth += 1;
     }
 
-    fn check_body_post(&mut self, _cx: &LateContext<'tcx>, _body: &'tcx Body<'tcx>) {
+    fn check_body_post(&mut self, _cx: &LateContext<'tcx>, _body: &Body<'tcx>) {
         self.body_depth -= 1;
     }
 

compiler/rustc_lint/src/passes.rs

@@ -7,8 +7,8 @@ use rustc_session::lint::LintPass;
 macro_rules! late_lint_methods {
     ($macro:path, $args:tt) => (
         $macro!($args, [
-            fn check_body(a: &'tcx rustc_hir::Body<'tcx>);
-            fn check_body_post(a: &'tcx rustc_hir::Body<'tcx>);
+            fn check_body(a: &rustc_hir::Body<'tcx>);
+            fn check_body_post(a: &rustc_hir::Body<'tcx>);
             fn check_crate();
             fn check_crate_post();
             fn check_mod(a: &'tcx rustc_hir::Mod<'tcx>, b: rustc_hir::HirId);

compiler/rustc_passes/src/check_const.rs

@@ -196,7 +196,7 @@ impl<'tcx> Visitor<'tcx> for CheckConstVisitor<'tcx> {
         self.recurse_into(kind, None, |this| intravisit::walk_anon_const(this, anon));
     }
 
-    fn visit_body(&mut self, body: &'tcx hir::Body<'tcx>) {
+    fn visit_body(&mut self, body: &hir::Body<'tcx>) {
         let owner = self.tcx.hir().body_owner_def_id(body.id());
         let kind = self.tcx.hir().body_const_context(owner);
         self.recurse_into(kind, Some(owner), |this| intravisit::walk_body(this, body));

compiler/rustc_passes/src/hir_stats.rs

@@ -246,7 +246,7 @@ impl<'v> hir_visit::Visitor<'v> for StatCollector<'v> {
         hir_visit::walk_item(self, i)
     }
 
-    fn visit_body(&mut self, b: &'v hir::Body<'v>) {
+    fn visit_body(&mut self, b: &hir::Body<'v>) {
         self.record("Body", Id::None, b);
         hir_visit::walk_body(self, b);
     }

compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs

@@ -4748,7 +4748,7 @@ impl<'v> Visitor<'v> for ReturnsVisitor<'v> {
         }
     }
 
-    fn visit_body(&mut self, body: &'v hir::Body<'v>) {
+    fn visit_body(&mut self, body: &hir::Body<'v>) {
         assert!(!self.in_block_tail);
         self.in_block_tail = true;
         hir::intravisit::walk_body(self, body);

src/librustdoc/visit_ast.rs

@@ -614,7 +614,7 @@ impl<'a, 'tcx> Visitor<'tcx> for RustdocVisitor<'a, 'tcx> {
         // Unneeded.
     }
 
-    fn visit_body(&mut self, b: &'tcx hir::Body<'tcx>) {
+    fn visit_body(&mut self, b: &hir::Body<'tcx>) {
         let prev = mem::replace(&mut self.inside_body, true);
         walk_body(self, b);
         self.inside_body = prev;

src/tools/clippy/clippy_lints/src/default_numeric_fallback.rs

@@ -49,7 +49,7 @@ declare_clippy_lint! {
 declare_lint_pass!(DefaultNumericFallback => [DEFAULT_NUMERIC_FALLBACK]);
 
 impl<'tcx> LateLintPass<'tcx> for DefaultNumericFallback {
-    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'_>) {
+    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &Body<'tcx>) {
         let hir = cx.tcx.hir();
         let is_parent_const = matches!(
             hir.body_const_context(hir.body_owner_def_id(body.id())),

src/tools/clippy/clippy_lints/src/dereference.rs

@@ -641,7 +641,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> {
         }
     }
 
-    fn check_body_post(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'_>) {
+    fn check_body_post(&mut self, cx: &LateContext<'tcx>, body: &Body<'_>) {
         if Some(body.id()) == self.current_body {
             for pat in self.ref_locals.drain(..).filter_map(|(_, x)| x) {
                 let replacements = pat.replacements;

src/tools/clippy/clippy_lints/src/implicit_hasher.rs

@@ -328,7 +328,7 @@ impl<'a, 'b, 'tcx> ImplicitHasherConstructorVisitor<'a, 'b, 'tcx> {
 impl<'a, 'b, 'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'a, 'b, 'tcx> {
     type NestedFilter = nested_filter::OnlyBodies;
 
-    fn visit_body(&mut self, body: &'tcx Body<'_>) {
+    fn visit_body(&mut self, body: &Body<'tcx>) {
         let old_maybe_typeck_results = self.maybe_typeck_results.replace(self.cx.tcx.typeck_body(body.id()));
         walk_body(self, body);
         self.maybe_typeck_results = old_maybe_typeck_results;

src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs

@@ -186,7 +186,7 @@ impl<'a, 'tcx> Visitor<'tcx> for BodyVisitor<'a, 'tcx> {
 }
 
 impl<'tcx> LateLintPass<'tcx> for ExprMetavarsInUnsafe {
-    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &'tcx rustc_hir::Body<'tcx>) {
+    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &rustc_hir::Body<'tcx>) {
         if is_lint_allowed(cx, MACRO_METAVARS_IN_UNSAFE, body.value.hir_id) {
             return;
         }

src/tools/clippy/clippy_lints/src/needless_borrows_for_generic_args.rs

@@ -129,7 +129,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessBorrowsForGenericArgs<'tcx> {
         }
     }
 
-    fn check_body_post(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'_>) {
+    fn check_body_post(&mut self, cx: &LateContext<'tcx>, body: &Body<'_>) {
         if self.possible_borrowers.last().map_or(false, |&(local_def_id, _)| {
             local_def_id == cx.tcx.hir().body_owner_def_id(body.id())
         }) {

src/tools/clippy/clippy_lints/src/only_used_in_recursion.rs

@@ -221,7 +221,7 @@ pub struct OnlyUsedInRecursion {
 }
 
 impl<'tcx> LateLintPass<'tcx> for OnlyUsedInRecursion {
-    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'tcx>) {
+    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &Body<'tcx>) {
         if body.value.span.from_expansion() {
             return;
         }
@@ -350,7 +350,7 @@ impl<'tcx> LateLintPass<'tcx> for OnlyUsedInRecursion {
         }
     }
 
-    fn check_body_post(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'tcx>) {
+    fn check_body_post(&mut self, cx: &LateContext<'tcx>, body: &Body<'tcx>) {
         if self.entered_body == Some(body.value.hir_id) {
             self.entered_body = None;
             self.params.flag_for_linting();

src/tools/clippy/clippy_lints/src/operators/mod.rs

@@ -868,11 +868,11 @@ impl<'tcx> LateLintPass<'tcx> for Operators {
         self.arithmetic_context.expr_post(e.hir_id);
     }
 
-    fn check_body(&mut self, cx: &LateContext<'tcx>, b: &'tcx Body<'_>) {
+    fn check_body(&mut self, cx: &LateContext<'tcx>, b: &Body<'_>) {
         self.arithmetic_context.enter_body(cx, b);
     }
 
-    fn check_body_post(&mut self, cx: &LateContext<'tcx>, b: &'tcx Body<'_>) {
+    fn check_body_post(&mut self, cx: &LateContext<'tcx>, b: &Body<'_>) {
         self.arithmetic_context.body_post(cx, b);
     }
 }

src/tools/clippy/clippy_lints/src/ptr.rs

@@ -188,7 +188,7 @@ impl<'tcx> LateLintPass<'tcx> for Ptr {
         }
     }
 
-    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'_>) {
+    fn check_body(&mut self, cx: &LateContext<'tcx>, body: &Body<'tcx>) {
         let hir = cx.tcx.hir();
         let mut parents = hir.parent_iter(body.value.hir_id);
         let (item_id, sig, is_trait_item) = match parents.next() {
@@ -525,7 +525,7 @@ fn check_fn_args<'cx, 'tcx: 'cx>(
         })
 }
 
-fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Option<&'tcx Body<'_>>) {
+fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Option<&Body<'tcx>>) {
     if let FnRetTy::Return(ty) = sig.decl.output
         && let Some((out, Mutability::Mut, _)) = get_ref_lm(ty)
     {
@@ -559,7 +559,7 @@ fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Optio
 }
 
 #[expect(clippy::too_many_lines)]
-fn check_ptr_arg_usage<'tcx>(cx: &LateContext<'tcx>, body: &'tcx Body<'_>, args: &[PtrArg<'tcx>]) -> Vec<PtrArgResult> {
+fn check_ptr_arg_usage<'tcx>(cx: &LateContext<'tcx>, body: &Body<'tcx>, args: &[PtrArg<'tcx>]) -> Vec<PtrArgResult> {
     struct V<'cx, 'tcx> {
         cx: &'cx LateContext<'tcx>,
         /// Map from a local id to which argument it came from (index into `Self::args` and

src/tools/clippy/clippy_lints/src/question_mark.rs

@@ -370,11 +370,11 @@ impl<'tcx> LateLintPass<'tcx> for QuestionMark {
         }
     }
 
-    fn check_body(&mut self, _: &LateContext<'tcx>, _: &'tcx Body<'tcx>) {
+    fn check_body(&mut self, _: &LateContext<'tcx>, _: &Body<'tcx>) {
         self.try_block_depth_stack.push(0);
     }
 
-    fn check_body_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Body<'tcx>) {
+    fn check_body_post(&mut self, _: &LateContext<'tcx>, _: &Body<'tcx>) {
         self.try_block_depth_stack.pop();
     }