https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101913
--- Comment #3 from eggert at cs dot ucla.edu --- (In reply to Andrew Pinski from comment #1) > >-1L << 63 is LONG_MIN > No it is undefined and has an overflow bit on it. > You want (long)(-1UL << 63) for it be correct. > But the warning is still there. I updated the attachment to avoid any undefined behavior, by replacing -1L<<63 with -1-9223372036854775807L. As you say, the bug is still there. > I thought -fsanitize=undefined enabled -fwrapv too ... It doesn't. (Perhaps you meant -ftrapv?)
