[Bug libstdc++/126111] std module unconditionally exports wchar_t-related names when configured with --disable-wchar_t

[sebastian.jude at st dot ovgu.de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126111

--- Comment #1 from Sebastian Jude <sebastian.jude at st dot ovgu.de> ---
Just stumbled upon a very similar issue with

using std::stold;

which might need a #if (_GLIBCXX_HAVE_STRTOLD && !
_GLIBCXX_HAVE_BROKEN_STRTOLD) guard.