https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113203
sandra at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sandra at gcc dot gnu.org --- Comment #7 from sandra at gcc dot gnu.org --- I'm not sure if the documentation patch I pushed is adequate to mark this as fixed, or if some actual changes in GCC behavior are needed too. I think the high-order bit is to tell users "don't try to do that", though.