[PATCH] D91747: [Clang] Add __STDCPP_THREADS__ to standard predefine macros

[Reid Kleckner via Phabricator via cfe-commits]

rnk added a comment.

If we believe the standard says that the compiler is supposed to set `__STDCPP_THREADS__`, then I think the libc++ #error needs to be adjusted. libcxxabi, or any other client, should be able to define `_LIBCPP_HAS_NO_THREADS`, and it should work, even if the compiler thinks they are allowed.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D91747/new/

https://reviews.llvm.org/D91747