1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/lint/unaligned_references_external_macro.rs b/src/test/ui/lint/unaligned_references_external_macro.rs
new file mode 100644
index 000000000..cb597c38e
--- /dev/null
+++ b/src/test/ui/lint/unaligned_references_external_macro.rs
@@ -0,0 +1,13 @@
+// aux-build:unaligned_references_external_crate.rs
+
+extern crate unaligned_references_external_crate;
+
+unaligned_references_external_crate::mac! { //~ERROR reference to packed field is unaligned
+    //~^ previously accepted
+    #[repr(packed)]
+    pub struct X {
+        pub field: u16
+    }
+}
+
+fn main() {}