1 files changed, 27 insertions, 0 deletions
diff --git a/src/test/ui/lub-glb/old-lub-glb-hr-eq.rs b/src/test/ui/lub-glb/old-lub-glb-hr-eq.rs
new file mode 100644
index 000000000..fbf4aee02
--- /dev/null
+++ b/src/test/ui/lub-glb/old-lub-glb-hr-eq.rs
@@ -0,0 +1,27 @@
+// Test that we give a note when the old LUB/GLB algorithm would have
+// succeeded but the new code (which requires equality) gives an
+// error. However, now that we handle subtyping correctly, we no
+// longer get an error, because we recognize these two types as
+// equivalent!
+//
+// check-pass
+
+fn foo(x: fn(&u8, &u8), y: for<'a> fn(&'a u8, &'a u8)) {
+    // The two types above are actually equivalent. With the older
+    // leak check, though, we didn't consider them as equivalent, and
+    // hence we gave errors. But now we've fixed that.
+    let z = match 22 {
+        0 => x,
+        _ => y,
+    };
+}
+
+fn foo_cast(x: fn(&u8, &u8), y: for<'a> fn(&'a u8, &'a u8)) {
+    let z = match 22 {
+        // No error with an explicit cast:
+        0 => x as for<'a> fn(&'a u8, &'a u8),
+        _ => y,
+    };
+}
+
+fn main() {}