From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8067 invoked by alias); 12 Aug 2008 18:33:37 -0000 Received: (qmail 8003 invoked by uid 22791); 12 Aug 2008 18:33:24 -0000 X-Spam-Check-By: sourceware.org Received: from mtagate3.de.ibm.com (HELO mtagate3.de.ibm.com) (195.212.29.152) by sourceware.org (qpsmtpd/0.31) with ESMTP; Tue, 12 Aug 2008 18:32:42 +0000 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate3.de.ibm.com (8.13.8/8.13.8) with ESMTP id m7CIWcrA143374 for ; Tue, 12 Aug 2008 18:32:38 GMT Received: from d12av02.megacenter.de.ibm.com (d12av02.megacenter.de.ibm.com [9.149.165.228]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m7CIWcLa1966260 for ; Tue, 12 Aug 2008 20:32:38 +0200 Received: from d12av02.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m7CIWclb018395 for ; Tue, 12 Aug 2008 20:32:38 +0200 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with SMTP id m7CIWcIw018392; Tue, 12 Aug 2008 20:32:38 +0200 Message-Id: <200808121832.m7CIWcIw018392@d12av02.megacenter.de.ibm.com> Received: by tuxmaker.boeblingen.de.ibm.com (sSMTP sendmail emulation); Tue, 12 Aug 2008 20:32:38 +0200 Subject: Re: [patch] nto target: fix null pointer dereference To: aristovski@qnx.com Date: Tue, 12 Aug 2008 18:33:00 -0000 From: "Ulrich Weigand" Cc: gdb-patches@sources.redhat.com X-Mailer: ELM [version 2.5 PL2] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2008-08/txt/msg00323.txt.bz2 Aleksandar Ristovski wrote: >diff -u -p -r1.25 nto-tdep.c >--- gdb/nto-tdep.c 23 Jul 2008 13:36:00 -0000 1.25 >+++ gdb/nto-tdep.c 12 Aug 2008 16:33:18 -0000 >@@ -266,6 +266,8 @@ LM_ADDR (struct so_list *so) > { > struct link_map_offsets *lmo = nto_fetch_link_map_offsets (); > >+ if (so->lm_info->lm == NULL) >+ return 0; > return extract_typed_address (so->lm_info->lm + lmo->l_addr_offset, > builtin_type_void_data_ptr); > } I'm wondering how this can ever be NULL ... I understand nto reuses the solib-svr4.c version of current_sos, which seems to always initalize the lm member. Can you explain what the situation is that leads to a NULL pointer here? Bye, Ulrich -- Dr. Ulrich Weigand GNU Toolchain for Linux on System z and Cell BE Ulrich.Weigand@de.ibm.com