[Bug middle-end/98465] [11 Regression] Bogus -Wstringop-overread with -std=gnu++20 -O2 and std::string::insert

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98465

--- Comment #22 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think it is rare for _M_disjunct to return false, most strings being
appended/inserted are disjunct from the string itself.