From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 172313858D39; Wed, 24 May 2023 18:35:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 172313858D39 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1684953302; bh=4quHGIBjUBjaYVvCq+GUrk5mQsEnsa5ht4RyDkZSQAg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=OMNM+lOtBgARK8M6ykoLj0BTc9d6i9X/pFMtgngoVr7kvjIstY2Nj6GnlGIwuWMMS zvC3iadWxhRgUSp0AdtrShl6dju7hl/Zs1AflBbrbJW1kRFD9o7OwidXgelYLH9pc8 cx3Cje5CnrymNNW/7xa6HcGEFr1gmD0FeISBW9rM= From: "anlauf at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/109948] [13/14 Regression] ICE(segfault) in gfc_expression_rank() from gfc_op_rank_conformable() Date: Wed, 24 May 2023 18:35:01 +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: 13.1.1 X-Bugzilla-Keywords: ice-on-valid-code 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: In-Reply-To: References: 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: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109948 --- Comment #4 from anlauf at gcc dot gnu.org --- The following patch fixes NULL pointer dereference with the reduced testcases: diff --git a/gcc/fortran/resolve.cc b/gcc/fortran/resolve.cc index 83e45f1b693..89c62b3eb1e 100644 --- a/gcc/fortran/resolve.cc +++ b/gcc/fortran/resolve.cc @@ -5640,7 +5643,7 @@ gfc_expression_rank (gfc_expr *e) if (ref->type !=3D REF_ARRAY) continue; - if (ref->u.ar.type =3D=3D AR_FULL) + if (ref->u.ar.type =3D=3D AR_FULL && ref->u.ar.as) { rank =3D ref->u.ar.as->rank; break; Can you check if this works for you? Still needs regtesting.=