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| author | Camille GILLOT <gillot.camille@gmail.com> | 2023-03-19 10:04:44 +0000 |
|---|---|---|
| committer | Camille GILLOT <gillot.camille@gmail.com> | 2023-03-28 18:05:12 +0000 |
| commit | 3102722ef4aa61b02f78f98403ceef588ed791ca (patch) | |
| tree | 25e0eb25e716a0fa953b3c16cec9d7685b85c9de /compiler/rustc_codegen_ssa | |
| parent | 84487b212daa3916b52ab1469afba161760e3081 (diff) | |
| download | rust-3102722ef4aa61b02f78f98403ceef588ed791ca.tar.gz rust-3102722ef4aa61b02f78f98403ceef588ed791ca.zip | |
Skip no_mangle if the item has no name.
Diffstat (limited to 'compiler/rustc_codegen_ssa')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/codegen_attrs.rs | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs index dac7d2e89b1..8542bab689d 100644 --- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs +++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs @@ -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 |