1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ui/pattern/usefulness/issue-4321.rs b/tests/ui/pattern/usefulness/issue-4321.rs
new file mode 100644
index 000000000..9715f2eba
--- /dev/null
+++ b/tests/ui/pattern/usefulness/issue-4321.rs
@@ -0,0 +1,8 @@
+fn main() {
+    let tup = (true, true);
+    println!("foo {:}", match tup { //~ ERROR non-exhaustive patterns: `(true, false)` not covered
+        (false, false) => "foo",
+        (false, true) => "bar",
+        (true, true) => "baz"
+    });
+}