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Skip no_mangle if the item has no name.

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This commit is contained in:
Camille GILLOT 2023-03-19 10:04:44 +00:00
parent 84487b212d
commit 3102722ef4
3 changed files with 35 additions and 1 deletions
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17
compiler/rustc_codegen_ssa/src/codegen_attrs.rs
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@ -103,7 +103,22 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs {
codegen_fn_attrs.flags |= CodegenFnAttrFlags::ALLOCATOR_ZEROED
}
sym::naked => codegen_fn_attrs.flags |= CodegenFnAttrFlags::NAKED,
sym::no_mangle => codegen_fn_attrs.flags |= CodegenFnAttrFlags::NO_MANGLE,
sym::no_mangle => {
if tcx.opt_item_name(did.to_def_id()).is_some() {
codegen_fn_attrs.flags |= CodegenFnAttrFlags::NO_MANGLE
} else {
tcx.sess
.struct_span_err(
attr.span,
format!(
"`#[no_mangle]` cannot be used on {} {} as it has no name",
tcx.def_descr_article(did.to_def_id()),
tcx.def_descr(did.to_def_id()),
),
)
.emit();
}
}
sym::no_coverage => codegen_fn_attrs.flags |= CodegenFnAttrFlags::NO_COVERAGE,
sym::rustc_std_internal_symbol => {
codegen_fn_attrs.flags |= CodegenFnAttrFlags::RUSTC_STD_INTERNAL_SYMBOL