[libcxx-commits] [libcxx] [libc++] Optimize {std, ranges}::for_each for iterating over __trees (PR #164405)

[Nico Weber via libcxx-commits]

nico wrote:

Heads-up: This makes quite a few of our tests crash (https://issues.chromium.org/issues/469115783).

I'll work on understanding why.

https://github.com/llvm/llvm-project/pull/164405