[libcxx-commits] [libcxx] [libc++][unique_ptr] Implement LWG 4144: Disallow unique_ptr<T&, D> (PR #209018)

[A. Jiang via libcxx-commits]

================
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// A program that instantiates the definition of unique_ptr<T, D> is ill-formed if T* is an invalid type.
+
+// LWG 4144
----------------
frederick-vs-ja wrote:

```suggestion
// [unique.ptr.single.general]/1 (added by LWG4144)
// A program that instantiates the definition of unique_ptr<T, D> is ill-formed if T* is an invalid type.
```

https://github.com/llvm/llvm-project/pull/209018