bjoernager/rust
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Avoid notes that only make sense for unsafe functions

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This commit is contained in:
Oli Scherer 2025-01-09 09:30:05 +00:00
parent 1952b87780
commit 767d4fe64e
4 changed files with 9 additions and 17 deletions
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7
compiler/rustc_mir_build/src/check_unsafety.rs
View file

@ -747,7 +747,10 @@ impl UnsafeOpKind {
) {
let parent_id = tcx.hir().get_parent_item(hir_id);
let parent_owner = tcx.hir_owner_node(parent_id);
let should_suggest = parent_owner.fn_sig().is_some_and(|sig| sig.header.is_unsafe());
let should_suggest = parent_owner.fn_sig().is_some_and(|sig| {
// Do not suggest for safe target_feature functions
matches!(sig.header.safety, hir::HeaderSafety::Normal(hir::Safety::Unsafe))
});
let unsafe_not_inherited_note = if should_suggest {
suggest_unsafe_block.then(|| {
let body_span = tcx.hir().body(parent_owner.body_id().unwrap()).value.span;
@ -910,7 +913,7 @@ impl UnsafeOpKind {
{
true
} else if let Some(sig) = tcx.hir().fn_sig_by_hir_id(*id)
&& sig.header.is_unsafe()
&& matches!(sig.header.safety, hir::HeaderSafety::Normal(hir::Safety::Unsafe))
{
true
} else {

6
compiler/rustc_trait_selection/src/error_reporting/infer/note_and_explain.rs
View file

@ -461,9 +461,11 @@ impl<T> Trait<T> for X {
(ty::FnPtr(_, hdr), ty::FnDef(def_id, _))
| (ty::FnDef(def_id, _), ty::FnPtr(_, hdr)) => {
if tcx.fn_sig(def_id).skip_binder().safety() < hdr.safety {
diag.note(
if !tcx.codegen_fn_attrs(def_id).safe_target_features {
diag.note(
"unsafe functions cannot be coerced into safe function pointers",
);
);
}
}
}
(ty::Adt(_, _), ty::Adt(def, args))