[Bug libstdc++/120029] Dangling iterator usage in std::filesystem::path::operator+=(const std::filesystem::path &p) when this == p

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120029

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, I don't think we need to care about the performance of this case. It's not
a realistic operation that is commonly needed for paths.