https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67279
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Yes, because 1 << 31 is UB in C99/C11.