From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C030C3858C54; Wed, 6 Apr 2022 08:01:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C030C3858C54 From: "pageexec at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug plugins/105171] gcc/toplev.c: `local_tick` can overflow and become -1 Date: Wed, 06 Apr 2022 08:01:02 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: plugins X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pageexec at gmail dot com X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: WONTFIX 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Apr 2022 08:01:02 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105171 --- Comment #9 from PaX Team --- (In reply to Andrew Pinski from comment #7) > I think there might be a way to check if the option -frandom-seed was pas= sed > and that might be a better option for your usage anyways. You should check > the options handling code. i had checked it before but the trace that -frandom-seed/set_random_seed() leave behind is a static variable (flag_random_seed), local_tick would be an indirect indicator were it not for this bug. the only other way i can see is the rather big hammer of having to reparse common_deferred_options or save_decoded_options as mentioned by Jakub (both are gcc 4.6+ only)...=