bjoernager/rust
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Coerce safe-to-call target_feature functions to fn pointers.

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This commit is contained in:
Luca Versari 2025-01-14 22:51:09 +01:00
parent 341f60327f
commit 8fee6a7739
7 changed files with 114 additions and 23 deletions
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15
compiler/rustc_borrowck/src/type_check/mod.rs
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@ -1654,7 +1654,20 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
match *cast_kind {
CastKind::PointerCoercion(PointerCoercion::ReifyFnPointer, coercion_source) => {
let is_implicit_coercion = coercion_source == CoercionSource::Implicit;
let src_sig = op.ty(body, tcx).fn_sig(tcx);
let src_ty = op.ty(body, tcx);
let mut src_sig = src_ty.fn_sig(tcx);
if let ty::FnDef(def_id, _) = src_ty.kind()
&& let ty::FnPtr(_, target_hdr) = *ty.kind()
&& tcx.codegen_fn_attrs(def_id).safe_target_features
&& target_hdr.safety.is_safe()
&& let Some(safe_sig) = tcx.adjust_target_feature_sig(
*def_id,
src_sig,
body.source.def_id(),
)
{
src_sig = safe_sig;
}
// HACK: This shouldn't be necessary... We can remove this when we actually
// get binders with where clauses, then elaborate implied bounds into that