1 files changed, 14 insertions, 0 deletions
diff --git a/tests/codegen/align-fn.rs b/tests/codegen/align-fn.rs
index 90073ff3081..4a9fc49d211 100644
--- a/tests/codegen/align-fn.rs
+++ b/tests/codegen/align-fn.rs
@@ -116,3 +116,17 @@ pub fn align_specified_twice_2() {}
 #[align(32)]
 #[align(256)]
 pub fn align_specified_twice_3() {}
+
+const _: () = {
+    // CHECK-LABEL: align_unmangled
+    // CHECK-SAME: align 256
+    #[unsafe(no_mangle)]
+    #[align(32)]
+    #[align(256)]
+    extern "C" fn align_unmangled() {}
+};
+
+unsafe extern "C" {
+    #[align(256)]
+    fn align_unmangled();
+}