get_attr should check that no duplicates are allowed

2022-09-06 14:16:54 +08:00
parent 676afc5149
commit 00b10a5552
7 changed files with 38 additions and 5 deletions
--- a/compiler/rustc_codegen_llvm/src/attributes.rs
+++ b/compiler/rustc_codegen_llvm/src/attributes.rs
@@ -386,7 +386,8 @@ pub fn from_fn_attrs<'ll, 'tcx>(
    ) {
        let span = cx
            .tcx
-            .get_attr(instance.def_id(), sym::target_feature)
+            .get_attrs(instance.def_id(), sym::target_feature)
+            .next()
            .map_or_else(|| cx.tcx.def_span(instance.def_id()), |a| a.span);
        let msg = format!(
            "the target features {} must all be either enabled or disabled together",