[Bug libstdc++/113283] missing C++26 freestanding headers.

[arsen at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113283

--- Comment #11 from Arsen Arsenović <arsen at gcc dot gnu.org> ---
could be implemented in libstdc++ when no libc impl is present