[Bug middle-end/66630] Missing ubsan/ftrapv error

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66630

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
For -ftrapv I never got around to commit some of the fixes I posted last
year...
(guard CCP properly for example).  Eventually at least CCP should be more
aggressive and simplify trapping stuff to __builtin_trap () (but the optab
implementations in libgcc use abort ()).