[patch,wip] warn on noncontiguous pointers

[Thomas Koenig]

Am 28.09.18 um 07:12 schrieb Bader, Reinhold:
>   Looking at 5.3.8.1 (Fortran 2008 for the sake of this discussion), we have that
> an object that has the DIMENSION attribute is an array. array-spec includes deferred-shape-spec-list,
> so any object declared with deferred shape is an array.

OK, I see, so this code is indeed legal.  Thanks!

@Cesar:  The idea behind your patch is sound.  I think this would
fit into the "legal, but can sometimes bite you" category,
so I think would be better with -Wextra (where we accept that
there might be quite a few false positives).

Could you adapt your patch accordingly and also add two test cases,
one testing for the absence of the warning/error with normal
options, and one for the warning with -Wextra?

Regards

	Thomas