From patchwork Thu Oct 2 10:16:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre Muller X-Patchwork-Id: 3066 Received: (qmail 15678 invoked by alias); 2 Oct 2014 10:17:02 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 15639 invoked by uid 89); 2 Oct 2014 10:17:02 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.4 required=5.0 tests=AWL, BAYES_50, MSGID_MULTIPLE_AT autolearn=no version=3.3.2 X-HELO: mailhost.u-strasbg.fr Received: from mailhost.u-strasbg.fr (HELO mailhost.u-strasbg.fr) (130.79.222.211) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 02 Oct 2014 10:17:00 +0000 Received: from mailhost.u-strasbg.fr (localhost [127.0.0.1]) by antispam (Postfix) with ESMTP id 48513220925 for ; Thu, 2 Oct 2014 12:16:57 +0200 (CEST) Received: from mailhost.u-strasbg.fr (localhost [127.0.0.1]) by antivirus (Postfix) with ESMTP id 38559220955 for ; Thu, 2 Oct 2014 12:16:57 +0200 (CEST) Received: from lmr.u-strasbg.fr (lmr3.u-strasbg.fr [172.30.21.3]) by mr1.u-strasbg.fr (Postfix) with ESMTP id 26367220925 for ; Thu, 2 Oct 2014 12:16:56 +0200 (CEST) Received: from lmr.u-strasbg.fr (localhost [127.0.0.1]) by antivirus (Postfix) with ESMTP id F2A54E2 for ; Thu, 2 Oct 2014 12:16:55 +0200 (CEST) Received: from E6510Muller (gw-ics.u-strasbg.fr [130.79.210.225]) (Authenticated sender: mullerp) by lmr3.u-strasbg.fr (Postfix) with ESMTPSA id D1303DA for ; Thu, 2 Oct 2014 12:16:54 +0200 (CEST) From: "Pierre Muller" To: Subject: [RFA] Stabs: Ignore N_BNSYM/N_ENSYM entry types Date: Thu, 2 Oct 2014 12:16:54 +0200 Message-ID: <000301cfde29$fdfe98a0$f9fbc9e0$@muller@ics-cnrs.unistra.fr> MIME-Version: 1.0 Trying to debug gdb with itself, with "set complaints 1000", I stumbled on the following complaints Unknown symbol type 0x2e or Unknown symbol type 0x4e It appears that those correspond to N_BNSYM and N_ENSYM, which are MacOS extensions of stabs debugging format. But these extensions have been used inside gcc probably for a while already, see: https://gcc.gnu.org/ml/gcc/2004-08/msg00157.html As the only purpose of these entries is to allow for removal of stabs information if the function is removed, it can be safely ignored by GDB. This patch simply adds those two entry types to the list of ignored entry type in read_dbx_symtab function. Is this OK? Pierre Muller 2014-10-02 Pierre Muller * gdb/dbxread.c (read_dbx_symtab): Also ignore N_BNSYM/N_ENSYM. diff --git a/gdb/dbxread.c b/gdb/dbxread.c index fd7910c..2c3be20 100644 --- a/gdb/dbxread.c +++ b/gdb/dbxread.c @@ -2120,6 +2120,8 @@ read_dbx_symtab (struct objfile *objfile) case N_SLINE: case N_RSYM: case N_PSYM: + case N_BNSYM: + case N_ENSYM: case N_LBRAC: case N_NSYMS: /* Ultrix 4.0: symbol count */ case N_DEFD: /* GNU Modula-2 */