https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108937
--- Comment #4 from kargl at gcc dot gnu.org --- (In reply to saitofuyuki from comment #3) > Thanks a lot. > > > Not sure it's a bug. > > I see. I do agree it's not a bug and the answer of the particular case is > undefined. > > But (for 32-bit integer case), since implemented ISHFT(I,32) returns 0 for > any representation of I, I suppose it may be better to return I as it is by > IBITS(I,0,32) (again, I agree it is not defined by standard). > > Anyway, thanks a lot for your comment. In the end, gfortran should probably do something that a user might expect, and that would likely be two-complements wrap-around unsigned integer arithmetic.
