1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/lint/unused/must_use-tuple.rs b/src/test/ui/lint/unused/must_use-tuple.rs
new file mode 100644
index 00000000000..0f0aa20253c
--- /dev/null
+++ b/src/test/ui/lint/unused/must_use-tuple.rs
@@ -0,0 +1,17 @@
+#![deny(unused_must_use)]
+
+fn foo() -> (Result<(), ()>, ()) {
+    (Ok::<(), ()>(()), ())
+}
+
+fn main() {
+    (Ok::<(), ()>(()),); //~ ERROR unused `Result`
+
+    (Ok::<(), ()>(()), 0, Ok::<(), ()>(()), 5);
+    //~^ ERROR unused `Result`
+    //~^^ ERROR unused `Result`
+
+    foo(); //~ ERROR unused `Result`
+
+    ((Err::<(), ()>(()), ()), ()); //~ ERROR unused `Result`
+}