[libcxx-commits] [libcxx] [libc++] std::atomic primary template should not have a `difference_type` member type (PR #123236)

[Louis Dionne via libcxx-commits]

ldionne wrote:

> > The implementation changes look good, but I haven't looked closely at the test yet.
> 
> I could use directions on how to approach the cxx03 failures? `<atomic>` is C++11. Should I just add `// UNSUPPORTED: c++03` directives where I got failures?

For that test you should add `// XFAIL: FROZEN-CXX03-HEADERS-FIXME`

https://github.com/llvm/llvm-project/pull/123236