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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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11
compiler/rustc_mir_build/src/check_unsafety.rs
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@ -495,14 +495,9 @@ impl<'a, 'tcx> Visitor<'a, 'tcx> for UnsafetyVisitor<'a, 'tcx> {
};
self.requires_unsafe(expr.span, CallToUnsafeFunction(func_id));
} else if let &ty::FnDef(func_did, _) = fn_ty.kind() {
// If the called function has target features the calling function hasn't,
// the call requires `unsafe`. Don't check this on wasm
// targets, though. For more information on wasm see the
// is_like_wasm check in hir_analysis/src/collect.rs
if !self.tcx.sess.target.options.is_like_wasm
&& !callee_features.iter().all(|feature| {
self.body_target_features.iter().any(|f| f.name == feature.name)
})
if !self
.tcx
.is_target_feature_call_safe(callee_features, self.body_target_features)
{
let missing: Vec<_> = callee_features
.iter()