From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11592 invoked by alias); 29 Jan 2015 15:52:48 -0000 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 Received: (qmail 11443 invoked by uid 48); 29 Jan 2015 15:52:41 -0000 From: "jason at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug sanitizer/64670] -fsanitize=vptr leads to "undefined reference to `typeinfo for class'" Date: Thu, 29 Jan 2015 15:52:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: sanitizer X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: jason at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg03408.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64670 --- Comment #4 from Jason Merrill --- This seems like a bug in the user's code, not the compiler. If the class is defined in a header with #pragma interface, there needs to be a matching #pragma implementation somewhere to cause the typeinfo and such to be emitted. clang doesn't run into this because it just ignores #pragma interface.