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-rw-r--r--src/test/ui/attributes/issue-100631.rs8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/test/ui/attributes/issue-100631.rs b/src/test/ui/attributes/issue-100631.rs
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index 000000000..0fefcf83f
--- /dev/null
+++ b/src/test/ui/attributes/issue-100631.rs
@@ -0,0 +1,8 @@
+// issue #100631, make sure `TyCtxt::get_attr` only called by case that compiler
+// can reasonably deal with multiple attributes.
+// `repr` will use `TyCtxt::get_attrs` since it's `DuplicatesOk`.
+#[repr(C)] //~ ERROR: unsupported representation for zero-variant enum [E0084]
+#[repr(C)]
+enum Foo {}
+
+fn main() {}