From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 60AD33943550; Mon, 3 May 2021 20:14:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 60AD33943550 From: "lavr at ncbi dot nlm.nih.gov" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/100403] Bogus "function may return address of local variable" warning Date: Mon, 03 May 2021 20:14:54 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 10.2.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: lavr at ncbi dot nlm.nih.gov 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: --- 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, 03 May 2021 20:14:54 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100403 --- Comment #2 from lavr at ncbi dot nlm.nih.gov --- > undefined if msg is not in the range of x.rec[0]...x.rec[RECLEN] Indeed for the segmented data address space. But in most systems it's line= ar, and the warning is then architecture dependent, and is only expected on tho= se, where the comparison cannot be safely made. Besides, the warning then shou= ld be about that fact, not the return address being of a local variable -- tha= t's misleading, at best.=