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Treat safe target_feature functions as unsafe by default

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This commit is contained in:
Oli Scherer 2024-12-13 12:19:46 +00:00
parent a907c56a77
commit 56178ddc90
20 changed files with 159 additions and 56 deletions
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4
compiler/rustc_mir_build/src/check_unsafety.rs
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@ -1120,6 +1120,10 @@ pub(crate) fn check_unsafety(tcx: TyCtxt<'_>, def: LocalDefId) {
let hir_id = tcx.local_def_id_to_hir_id(def);
let safety_context = tcx.hir().fn_sig_by_hir_id(hir_id).map_or(SafetyContext::Safe, |fn_sig| {
match fn_sig.header.safety {
// We typeck the body as safe, but otherwise treat it as unsafe everywhere else.
// Call sites to other SafeTargetFeatures functions are checked explicitly and don't need
// to care about safety of the body.
hir::HeaderSafety::SafeTargetFeatures => SafetyContext::Safe,
hir::HeaderSafety::Normal(safety) => match safety {
hir::Safety::Unsafe => SafetyContext::UnsafeFn,
hir::Safety::Safe => SafetyContext::Safe,