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Check params for unsafety in THIR

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This commit is contained in:
Michael Goulet 2024-09-18 16:45:27 -04:00
parent 7fc70f870a
commit 12f2bcde63
3 changed files with 52 additions and 0 deletions
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14
compiler/rustc_mir_build/src/check_unsafety.rs
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@ -218,6 +218,13 @@ impl<'tcx> UnsafetyVisitor<'_, 'tcx> {
warnings: self.warnings,
suggest_unsafe_block: self.suggest_unsafe_block,
};
// params in THIR may be unsafe, e.g. a union pattern.
for param in &inner_thir.params {
if let Some(param_pat) = param.pat.as_deref() {
inner_visitor.visit_pat(param_pat);
}
}
// Visit the body.
inner_visitor.visit_expr(&inner_thir[expr]);
// Unsafe blocks can be used in the inner body, make sure to take it into account
self.safety_context = inner_visitor.safety_context;
@ -1032,6 +1039,13 @@ pub(crate) fn check_unsafety(tcx: TyCtxt<'_>, def: LocalDefId) {
warnings: &mut warnings,
suggest_unsafe_block: true,
};
// params in THIR may be unsafe, e.g. a union pattern.
for param in &thir.params {
if let Some(param_pat) = param.pat.as_deref() {
visitor.visit_pat(param_pat);
}
}
// Visit the body.
visitor.visit_expr(&thir[expr]);
warnings.sort_by_key(|w| w.block_span);