[Bug bootstrap/110646] [14 Regression] gensupport.cc:643:18: error: 'stoi' is not a member of 'std'

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110646

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #2)
> I'll split out the checks needed for std::stoi etc.

See Bug 110653 for the library improvements.