From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30353 invoked by alias); 29 May 2012 07:53:55 -0000 Received: (qmail 30339 invoked by uid 22791); 29 May 2012 07:53:53 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 29 May 2012 07:53:39 +0000 From: "manu at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/53510] [4.8 Regression] OOM while compile some code Date: Tue, 29 May 2012 08:05:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Keywords: diagnostic, memory-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: manu at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: jakub at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.0 X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-05/txt/msg02692.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53510 --- Comment #7 from Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez 2012-05-29 07:53:37 UTC --- (In reply to comment #6) > Created attachment 27515 [details] > gcc48-pr53510.patch >=20 > Ugh, that leaks like crazy. Not only it forgets to free buffers, but also > doubles the size of the allocation (which is fine) but only adds 2 to the > expected allocated block length, so it allocates twice as much for every 2 > bytes beyond 200 characters on a line. You are right. It is very weird what that code is doing. FWIW, I copied the function from gcov.c:read_line, so I guess that code has the same bug.