[libcxx-commits] [libcxx] [libc++] Adds a global private constructor tag. (PR #87920)

[Louis Dionne via libcxx-commits]

================
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// struct __private_constructor_tag{};
+
+// The private constructor tag is intended to be a trivial type that can easily
+// be used to mark a constructor exposition-only. The name is uglified and not
+// provided directly by the utility header.
----------------
ldionne wrote:

```suggestion
// The private constructor tag is intended to be a trivial type that can easily
// be used to mark a constructor exposition-only.
```

https://github.com/llvm/llvm-project/pull/87920