1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/lint/unused/must_use-unit.rs b/src/test/ui/lint/unused/must_use-unit.rs
new file mode 100644
index 000000000..4dd4798ab
--- /dev/null
+++ b/src/test/ui/lint/unused/must_use-unit.rs
@@ -0,0 +1,16 @@
+#![feature(never_type)]
+#![deny(unused_must_use)]
+
+#[must_use]
+fn foo() {}
+
+#[must_use]
+fn bar() -> ! {
+    unimplemented!()
+}
+
+fn main() {
+    foo(); //~ unused return value of `foo`
+
+    bar(); //~ unused return value of `bar`
+}