1 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/extern/extern-types-distinct-types.rs b/src/test/ui/extern/extern-types-distinct-types.rs
new file mode 100644
index 000000000..4da049b78
--- /dev/null
+++ b/src/test/ui/extern/extern-types-distinct-types.rs
@@ -0,0 +1,12 @@
+#![feature(extern_types)]
+
+extern "C" {
+    type A;
+    type B;
+}
+
+fn foo(r: &A) -> &B {
+    r //~ ERROR mismatched types
+}
+
+fn main() {}