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 14E733858D39; Wed, 15 Mar 2023 08:58:43 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 14E733858D39
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1678870723;
	bh=Ef1x7gYi5H4kgYY4CFeXKoQ/obplXbnfcPbbtXANCwk=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=UsZ329LqiheOu/EookxII9Ev+eniPTnR05TaNYfUNnBtbvIW4UxMy9RB2agWBmxDg
	 EAe6JwM4Juib0AsdHeihecc7mqDhZzqf3Q7H9fSDN6Uf6SCPi54s6c0Ye+YCInGtTF
	 ZLb65fRzXsDMOZbzHggHZf70Hpitm553xpyYjLQE=
From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/58331] [OOP] Bogus rank checking with
 explicit-/assumed-size arrays and CLASS
Date: Wed, 15 Mar 2023 08:58:41 +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: 4.9.0
X-Bugzilla-Keywords: rejects-valid, wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: burnus at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: anlauf at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-58331-4-oENyLe6x5A@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-58331-4@http.gcc.gnu.org/bugzilla/>
References: <bug-58331-4@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=3D58331

--- Comment #9 from Tobias Burnus <burnus at gcc dot gnu.org> ---
COARRAYS:

(In reply to anlauf from comment #7)
> I tried other testcases that use coarrays, but e.g. the following scalar
> coarray case produces an ICE later on.  I believe this is a pre-existing
> separate issue.

A coarray 'ca' can either be a local variable (the usual case), a remove
reference (then with '[indx]' in the expr) - or, like here, the full thing.

In gfc_conv_intrinsic_to_class, the gfc_conv_expr_reference 'destroys' the
coarray part. I think we need something like 'gfc_conv_variable' =E2=80=94 =
and I bet
that we need to ensure all combinations work:

(scalar,array w/o and w/ descriptor) =E2=86=92 (assumed rank, array w/o and=
 w/
descriptor) - where the 'to class' (and, obviously, the 'from' was well) are
coarrays.

Besides intrinsic types -> class(*), we should also check check
type(t) -> ('class(t)' and 'class(*)')=