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Delegation: allow foreign fns reuse

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This commit is contained in:
Bryanskiy 2025-03-12 14:52:17 +03:00
parent 961351c76c
commit 63447f2095
5 changed files with 87 additions and 13 deletions
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15
compiler/rustc_ast_lowering/src/delegation.rs
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@ -190,14 +190,19 @@ impl<'hir> LoweringContext<'_, 'hir> {
) -> hir::FnSig<'hir> {
let header = if let Some(local_sig_id) = sig_id.as_local() {
match self.resolver.delegation_fn_sigs.get(&local_sig_id) {
Some(sig) => self.lower_fn_header(
sig.header,
Some(sig) => {
let parent = self.tcx.parent(sig_id);
// HACK: we override the default safety instead of generating attributes from the ether.
// We are not forwarding the attributes, as the delegation fn sigs are collected on the ast,
// and here we need the hir attributes.
if sig.target_feature { hir::Safety::Unsafe } else { hir::Safety::Safe },
&[],
),
let default_safety =
if sig.target_feature || self.tcx.def_kind(parent) == DefKind::ForeignMod {
hir::Safety::Unsafe
} else {
hir::Safety::Safe
};
self.lower_fn_header(sig.header, default_safety, &[])
}
None => self.generate_header_error(),
}
} else {