1 files changed, 12 insertions, 0 deletions
diff --git a/tests/ui/extern/extern-rust.rs b/tests/ui/extern/extern-rust.rs
new file mode 100644
index 00000000000..7cea8be5921
--- /dev/null
+++ b/tests/ui/extern/extern-rust.rs
@@ -0,0 +1,12 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+#[repr(C)]
+pub struct Foo(u32);
+
+// ICE trigger, bad handling of differing types between rust and external ABIs
+pub extern "C" fn bar() -> Foo {
+    Foo(0)
+}
+
+fn main() {}