[PATCH] Fortran: reject bad SIZE argument while simplifying ISHFTC [PR106911]

[Steve Kargl]

On Sat, Dec 10, 2022 at 10:14:06PM +0100, Harald Anlauf via Fortran wrote:
> Dear all,
> 
> we should not try to simplify ISHFTC if the SIZE argument
> is known to be outside the allowed range.  It's better to
> generate an error by terminating the simplification.
> 
> Regtested on x86_64-pc-linux-gnu.  OK for mainline?
> 

Yes.  Thanks for the patch.

-- 
Steve