On Fri, Dec 23, 2022 at 1:55 PM Jerry James <loganje...@gmail.com> wrote: > I was able to reduce your test code, Camm, and have filed > https://bugzilla.redhat.com/show_bug.cgi?id=2156088. I am now going > to vanish for the rest of the year, but will have sporadic email > access.
I haven't quite vanished yet, and I already got a reply on that bug. The code invokes undefined behavior. Add -fsanitize=undefined to the build flags and you will see: $ ./t -8874444426961747968 t.c:50:16: runtime error: signed integer overflow: 8874444426961747968 + 2305843009213693952 cannot be represented in type 'long int' make 0x404140 -- Jerry James http://www.jamezone.org/