From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id C005D3861845; Wed, 29 Nov 2023 20:37:48 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C005D3861845
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1701290268;
	bh=uW+OqrLZ92mllVKE6asnTtCI79JeYfoeJ+w1R4aeY+s=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=ZCfrf3maWSWJCOBfv0P1i3ZJRbgpwN1ri3SszsCqerzw/7lZ0jMoKIYvMWTwd6TrI
	 sAYHGqwdz9+oYlQeonO341JpXA1HYRzfXfGHN4OFTAui9CAEMEHWQNI1EWo9xZDU0y
	 NLFL8dvaXRjfhIjHhbNjlpiZ9HseaZjp3Qxajsh4=
From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/112764] Associating entity does not have target
 attribute if selector has pointer attribute in associate block
Date: Wed, 29 Nov 2023 20:37:48 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 13.1.0
X-Bugzilla-Keywords: rejects-valid
X-Bugzilla-Severity: normal
X-Bugzilla-Who: anlauf at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-112764-4-ntWz6VrXI8@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-112764-4@http.gcc.gnu.org/bugzilla/>
References: <bug-112764-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112764

--- Comment #5 from anlauf at gcc dot gnu.org ---
(In reply to martin from comment #4)
> (In reply to anlauf from comment #1)
> > Confirmed.
> >=20
> > F2018:11.1.3.3 has:
> >=20
> > "The associating entity does not have the ALLOCATABLE or POINTER attrib=
utes;
> > it has the TARGET attribute if and only if the selector is a variable a=
nd has
> > either the TARGET or POINTER attribute."
>=20
> I was not sure, whether this formulation also covers array sections.

The following example has apparently always been legal, is accepted and wor=
ks:

  integer, pointer             :: x, y(:)
  integer, allocatable, target :: z(:)
  allocate (y(2), z(3))
  y =3D 42
  x =3D> y(2)
  print *,x
  z =3D 23
  x =3D> z(2)
  print *,x
end

I think this is covered by F2018:8.5.17 TARGET attribute, although I find
the text somewhat hard to understand.  Like:

"If an object has the TARGET attribute, then all of its nonpointer subobjec=
ts
also have the TARGET attribute."

IIUC that would cover array sections.=