[libcxx-commits] [libcxx] [libc++] Fix input-only range handling for `vector` (PR #116157)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne commented:

Thanks a lot for the patch! I'd like to find ways to minimize the intermixing of `#ifdef` and `if constexpr` since that leads to IMO really difficult to read code.

https://github.com/llvm/llvm-project/pull/116157