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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/99765] Explicit dimension size declaration of pointer
 array allowed
Date: Thu, 25 Mar 2021 15:48:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99765

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> so I think
>   real, dimension(10), pointer :: a(:) =3D> null()
> and
>   real, dimension(10), allocatable :: a(10)
> are invalid and shall give an error.

I concur with the second example (violating the cited constraint), but the
first one looks valid to me. In particular:

F2018 has in 8.2 [92:1-3]): "The type declaration statement also specifies =
the
attributes whose keywords appear in the attr-spec, except that the DIMENSION
attribute can be specified or overridden for an entity by the appearance of
array-spec in its entity-decl,"

Thus, unless I missed some example, this PR looks invalid to me.=