[libcxx-commits] [libcxx] [libc++] Make sure LWG2070 is implemented as a DR (PR #65998)

[Louis Dionne via libcxx-commits]

ldionne wrote:

> New tests please. Presumable this is observable, so we should have additional tests.

See the changes in `UNSUPPORTED` in `allocate_shared.lwg2070.pass.cpp` -- that's all that should be required.

https://github.com/llvm/llvm-project/pull/65998