[Bug libstdc++/113792] error: '__size_t' was not declared in this scope

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113792

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And we have the same pattern in include/c_global/cmath and
include/bits/std_abs.h so I'm also very reluctant to change just one.