cleaned up some tests

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/ui/codegen/rvalue-mut-ref-box-drop.rs b/tests/ui/codegen/rvalue-mut-ref-box-drop.rs
new file mode 100644
index 00000000000..441820ad64e
--- /dev/null
+++ b/tests/ui/codegen/rvalue-mut-ref-box-drop.rs
@@ -0,0 +1,13 @@
+//! Tests cleanup of a temporary `Box` rvalue passed as a mutable reference.
+//!
+//! - Issue: <https://github.com/rust-lang/rust/issues/7972>.
+
+//@ run-pass
+
+fn foo(x: &mut Box<u8>) {
+    *x = Box::new(5);
+}
+
+pub fn main() {
+    foo(&mut Box::new(4));
+}