Uplift drop-bounds lint from clippy

1 files changed, 14 insertions, 0 deletions

diff --git a/src/test/ui/drop-bounds/drop-bounds-impl-drop.rs b/src/test/ui/drop-bounds/drop-bounds-impl-drop.rs
new file mode 100644
index 00000000000..063efc7b31a
--- /dev/null
+++ b/src/test/ui/drop-bounds/drop-bounds-impl-drop.rs
@@ -0,0 +1,14 @@
+// run-pass
+#![deny(drop_bounds)]
+// As a special exemption, `impl Drop` in the return position raises no error.
+// This allows a convenient way to return an unnamed drop guard.
+fn voldemort_type() -> impl Drop {
+  struct Voldemort;
+  impl Drop for Voldemort {
+    fn drop(&mut self) {}
+  }
+  Voldemort
+}
+fn main() {
+  let _ = voldemort_type();
+}