diff --git a/src/test/compile-fail/fn-compare-mismatch.rs b/src/test/compile-fail/fn-compare-mismatch.rs
new file mode 100644
index 00000000000..4b83455f5d4
--- /dev/null
+++ b/src/test/compile-fail/fn-compare-mismatch.rs
@@ -0,0 +1,8 @@
+// xfail-stage0
+// error-pattern:expected fn() but found fn(int)
+
+fn main() {
+  fn f() {}
+  fn g(int i) {}
+  auto x = f == g;
+}
\ No newline at end of file