[Bug sanitizer/115793] signed integer overflow check missing at optimization levels -O2, -O3, and -Os

[bic60176 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115793

--- Comment #5 from Bi6c <bic60176 at gmail dot com> ---
gcc-trunk also not reporting signed integer overflow at -O2, -O3, and -Os
(https://godbolt.org/z/8xnq1bo7s).