[Bug c++/119154] GCC 15.0 std module with compiled with -O3 breaks when loaded with -O0 (not -O1, -O2 and -Ofast)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119154

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I really hate these hidden options/tweaks, it is complete nightmare for bug
reporting.
In any case, confirmed, bits/std.cc needs to be compiled with -O3
-D_FORTIFY_SOURCE (or =2 or =3), the #c0 main.cpp can be compiled without
(well, better it should be because _FORTIFY_SOURCE is not supported at -O0).