------- Comment #13 from kargl at gcc dot gnu dot org  2010-03-17 22:26 -------
(In reply to comment #11)
> > Well, the number model is symmetric. See Fortran 2003 ...
> 
> I agree, but it is a very pedantic view that should at least be mentioned in
> the manual.

You forgot to attach your patch.

> Now I think the implementation is not consistent:
> 
> [macbook] f90/bug% cat > ishft_1.f90
> print *, ishft(1,31)
> end
> [macbook] f90/bug% gfc -Wall -pedantic ishft_1.f90
> [macbook] f90/bug% a.out
>  -2147483648

gfc_simplify_ishft doesn't range check its result.
Patch welcomed.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43310

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