https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106960
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Signed integer overflow is undefined behavior. That is -INT_MIN is undefined behavior. You need to either use -fwrapv or change the code to use unsigned types to get defined behavior.