From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 62995 invoked by alias); 29 Aug 2018 18:27:10 -0000 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 Received: (qmail 62983 invoked by uid 89); 29 Aug 2018 18:27:10 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-2.9 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy= X-HELO: gateway34.websitewelcome.com Received: from gateway34.websitewelcome.com (HELO gateway34.websitewelcome.com) (192.185.149.13) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 29 Aug 2018 18:27:08 +0000 Received: from cm10.websitewelcome.com (cm10.websitewelcome.com [100.42.49.4]) by gateway34.websitewelcome.com (Postfix) with ESMTP id 309EA802AE for ; Wed, 29 Aug 2018 13:27:07 -0500 (CDT) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with SMTP id v5ApfGcCiBcCXv5B7fkmkj; Wed, 29 Aug 2018 13:27:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=2FfWadk/S4akNAWZ8ujdNVFY5DhG7ug/E/e8P6c6ziM=; b=oaJMNUbfQ8ZDqVgGJhcOm5mxKv Hg4fmhTW/eFNy2shMp22N/iCn+ha94La5aoHhnShs9tsbLGQx1ZawVAsqubN7HN8Q3H4/2FAzTcOh v7wGuvz7k3rL7nWC87ZwXzJIN; Received: from 75-166-85-72.hlrn.qwest.net ([75.166.85.72]:52600 helo=pokyo) by box5379.bluehost.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1fv5Ap-0034Hf-DE; Wed, 29 Aug 2018 13:26:35 -0500 From: Tom Tromey To: Andrew Burgess Cc: gdb-patches@sourceware.org Subject: Re: [PATCH] gdb: Ensure compiler doesn't optimise variable out in test References: <20180829180259.2718-1-andrew.burgess@embecosm.com> Date: Wed, 29 Aug 2018 18:27:00 -0000 In-Reply-To: <20180829180259.2718-1-andrew.burgess@embecosm.com> (Andrew Burgess's message of "Wed, 29 Aug 2018 19:02:59 +0100") Message-ID: <87mut53u79.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SW-Source: 2018-08/txt/msg00763.txt.bz2 >>>>> "Andrew" == Andrew Burgess writes: Andrew> In this patch I propose that a use of 'a' is added after the calls to Andrew> hitbottom and recurse, this should cause the compiler to keep 'a' Andrew> around, which should ensure GDB can find it. Andrew> gdb/testsuite/ChangeLog: Andrew> * gdb.base/funcargs.c (use_a): New function. Andrew> (recurse): Call use_a. Thanks, this is ok. Tom