From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 4A3CF3858C74; Mon, 7 Mar 2022 12:05:03 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4A3CF3858C74 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/104789] [12 Regression] New -Wstringop-overflow false positive since r12-5863-g9354a7d70caef1c9 Date: Mon, 07 Mar 2022 12:05:03 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia 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: 12.0 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: Mon, 07 Mar 2022 12:05:03 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104789 --- Comment #5 from Andrew Pinski --- (In reply to R=C3=A9mi Verschelde from comment #4) > I'm not familiar with the term "bounded roo". I reduced the test case as > much as I could to focus on the minimal code that would trigger the warni= ng > which seems to me like a false positive - is it not one? roo was a typo for too. The r and t are next to each other on the standard qwerty keyboard. Anyways I think the warning should be reworded to say might be writing inst= ead of a definite. There is another bug talking about the wording too. Also the way I read the code in both the original and reduced testcase, wit= hout knowing how components' range, there could be a buffer overflow.=