1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/codegen/issue-13018.rs b/src/test/codegen/issue-13018.rs
new file mode 100644
index 000000000..b70ea1f48
--- /dev/null
+++ b/src/test/codegen/issue-13018.rs
@@ -0,0 +1,11 @@
+// compile-flags: -O
+
+// A drop([...].clone()) sequence on an Rc should be a no-op
+// In particular, no call to __rust_dealloc should be emitted
+#![crate_type = "lib"]
+use std::rc::Rc;
+
+pub fn foo(t: &Rc<Vec<usize>>) {
+// CHECK-NOT: __rust_dealloc
+    drop(t.clone());
+}