[Bug libstdc++/112925] Optimize std::string construction from std::istreambuf_iterator

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112925

--- Comment #7 from Nathan Myers <ncm at gcc dot gnu.org> ---
https://gcc.gnu.org/pipermail/gcc-patches/2026-October/736562.html