1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/align-with-extern-c-fn.rs b/src/test/ui/align-with-extern-c-fn.rs
new file mode 100644
index 000000000..9e490e27a
--- /dev/null
+++ b/src/test/ui/align-with-extern-c-fn.rs
@@ -0,0 +1,18 @@
+// run-pass
+
+#![allow(stable_features)]
+#![allow(unused_variables)]
+
+// #45662
+
+#![feature(repr_align)]
+
+#[repr(align(16))]
+pub struct A(#[allow(unused_tuple_struct_fields)] i64);
+
+#[allow(improper_ctypes_definitions)]
+pub extern "C" fn foo(x: A) {}
+
+fn main() {
+    foo(A(0));
+}