1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/structs-enums/compare-generic-enums.rs b/src/test/ui/structs-enums/compare-generic-enums.rs
new file mode 100644
index 000000000..84f953b1f
--- /dev/null
+++ b/src/test/ui/structs-enums/compare-generic-enums.rs
@@ -0,0 +1,16 @@
+// run-pass
+#![allow(non_camel_case_types)]
+
+
+type an_int = isize;
+
+fn cmp(x: Option<an_int>, y: Option<isize>) -> bool {
+    x == y
+}
+
+pub fn main() {
+    assert!(!cmp(Some(3), None));
+    assert!(!cmp(Some(3), Some(4)));
+    assert!(cmp(Some(3), Some(3)));
+    assert!(cmp(None, None));
+}