https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122645
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I found this the setjmp implementation came originally from https://gist.github.com/m1lkweed/15611620e60f6747a40e2ab694346029 . That code is just undefined always because of the jumping into the middle of a statement expression.
