[Bug libstdc++/123901] Consider optimizing std::regex matching algos to convert [first,last) to a std::basic_string and match on that

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123901

--- Comment #3 from Tomasz Kamiński <tkaminsk at gcc dot gnu.org> ---
And _Escaping_sink r16-4421-g59cabe08b57a26 form.