1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-6470.rs b/src/test/ui/issues/issue-6470.rs
new file mode 100644
index 000000000..8c6192a59
--- /dev/null
+++ b/src/test/ui/issues/issue-6470.rs
@@ -0,0 +1,17 @@
+// build-pass
+#![allow(dead_code)]
+#![allow(improper_ctypes)]
+// pretty-expanded FIXME #23616
+#![allow(non_snake_case)]
+
+pub mod Bar {
+    pub struct Foo {
+        v: isize,
+    }
+
+    extern "C" {
+        pub fn foo(v: *const Foo) -> Foo;
+    }
+}
+
+pub fn main() {}