From patchwork Wed Apr 25 13:59:50 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H.J. Lu" X-Patchwork-Id: 154931 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) by ozlabs.org (Postfix) with SMTP id 43EE1B6FAA for ; Thu, 26 Apr 2012 00:00:13 +1000 (EST) Comment: DKIM? See http://www.dkim.org DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=gcc.gnu.org; s=default; x=1335967214; h=Comment: DomainKey-Signature:Received:Received:Received:Received:Received: Received:Date:From:To:Cc:Subject:Message-ID:Reply-To: MIME-Version:Content-Type:Content-Disposition:User-Agent: Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:Sender:Delivered-To; bh=ITTETkieWUTYs5luwZEx BqLIkJs=; b=Vcv6ixNrvrVQbSILw3RFabjKUsE8NQQCfijfKV2GVHcvsf9Z5y2b 6F9Fwa71XpVCMnfZrSTx4O4ISp9SK03lqraGHdMObqYxz3qKYv2Z+Sl4U3+3aquf PQXJ78EtR6bOxwCSAD8eXsnwbvsSgrO9EsoabSTmGcrafOhcNwO4TEs= Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=gcc.gnu.org; h=Received:Received:X-SWARE-Spam-Status:X-Spam-Check-By:Received:Received:X-ExtLoop1:Received:Received:Date:From:To:Cc:Subject:Message-ID:Reply-To:MIME-Version:Content-Type:Content-Disposition:User-Agent:Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help:Sender:Delivered-To; b=bMlzdaB4V/kXCO7BaiHEGXPko0rdY1rAvNIFqnOgV9+qoKoAP9T+BXQrBCZylS ghtTkiIStyrzUjrXLV6fR4XbIoo7Gs/D+v+Bz3kOCHoWmymC2V83Ybv88kUBHu8S A+sO9KAiIK6+GdbxuUuXMrifLi1DwckqUoDFxjl8POfgQ=; Received: (qmail 9621 invoked by alias); 25 Apr 2012 14:00:07 -0000 Received: (qmail 9554 invoked by uid 22791); 25 Apr 2012 14:00:03 -0000 X-SWARE-Spam-Status: No, hits=-3.8 required=5.0 tests=AWL, BAYES_00, KHOP_RCVD_UNTRUST, NO_DNS_FOR_FROM, RCVD_IN_DNSWL_HI, RCVD_IN_HOSTKARMA_W, T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mga02.intel.com (HELO mga02.intel.com) (134.134.136.20) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 25 Apr 2012 13:59:51 +0000 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 25 Apr 2012 06:59:50 -0700 X-ExtLoop1: 1 Received: from gnu-6.sc.intel.com ([10.3.194.135]) by orsmga002.jf.intel.com with ESMTP; 25 Apr 2012 06:59:50 -0700 Received: by gnu-6.sc.intel.com (Postfix, from userid 500) id 6D9E0C1FB9; Wed, 25 Apr 2012 06:59:50 -0700 (PDT) Date: Wed, 25 Apr 2012 06:59:50 -0700 From: "H.J. Lu" To: gcc-patches@gcc.gnu.org Cc: jason@redhat.com, jakub@redhat.com Subject: PATCH: PR debug/52857: DW_OP_GNU_regval_type is generated with INVALID_REGNUM Message-ID: <20120425135950.GA7855@intel.com> Reply-To: "H.J. Lu" MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Hi, We may generate DW_OP_GNU_regval_type with INVALID_REGNUM. This patch adds an assert to make sure that we don't. OK for trunk? Thanks. H.J. --- 2012-04-06 H.J. Lu PR debug/52857 * dwarf2out.c (dbx_reg_number): Assert return value != INVALID_REGNUM. diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index ca88fc5..515a824 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -10167,7 +10167,9 @@ dbx_reg_number (const_rtx rtl) } #endif - return DBX_REGISTER_NUMBER (regno); + regno = DBX_REGISTER_NUMBER (regno); + gcc_assert (regno != INVALID_REGNUM); + return regno; } /* Optionally add a DW_OP_piece term to a location description expression.