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 446423857805; Mon, 25 Apr 2022 11:46:15 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 446423857805
From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/105358] [12 Regression] scan* fails on targets without
 aligned memory allocators.
Date: Mon, 25 Apr 2022 11:46:15 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libgomp
X-Bugzilla-Version: 12.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: iains at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-105358-4-oZ4fDHErOp@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-105358-4@http.gcc.gnu.org/bugzilla/>
References: <bug-105358-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Mon, 25 Apr 2022 11:46:15 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105358

--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> Or is the problem mainly in code like
> #define INLINE_ORDERED_TEAM_IDS_OFF \
>   ((offsetof (struct gomp_work_share, inline_ordered_team_ids)          \
>     + __alignof__ (long long) - 1) & ~(__alignof__ (long long) - 1))
>           if (size > (sizeof (struct gomp_work_share)
>                       - INLINE_ORDERED_TEAM_IDS_OFF))
> where if struct gomp_work_share's size equal to inline_ordered_team_ids
> isn't a multiple of 8 sizeof (struct gomp_work_share) -
> INLINE_ORDERED_TEAM_IDS_OFF wraps around?

right - I suspect that could be the case because sizeof (struct
gomp_work_share) is not a multiple of 8.=