[PATCH] libstdc++: Reduce header dependencies from PSTL headers [PR92546]

[Jonathan Wakely]

On Thu, 17 Mar 2022 at 20:44, Thomas Rodgers wrote:
>
> Looks ok to me. I just am curious, does the change to src/c++17/fs_path.cc need to be part of this change (It's not obvious to me that it is related to the other changes in the patch).

It's related. fs_path.cc uses std::array but was not including <array>
directly, it was accidentally relying on it being there via
<algorithm>. After this change, <algorithm> doesn't include
<functional>, so doesn't include <array> and so fs_path.cc needs to be
fixed.