https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61158
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org Component|c |middle-end --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- prec and shiftc are both unsigned, so it's not -8, but some huge number. That indeed looks like a bug. This code was added in r130589.