[Bug tree-optimization/128269] wrong code at -O1 and above: snprintf "%lc" with a wint_t in [0, 200] is assumed not to return a negative value

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128269

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
I thought I saw another printf return value optimization wrong code before.