From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 82129 invoked by alias); 18 Mar 2016 07:56:47 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 80721 invoked by uid 89); 18 Mar 2016 07:56:46 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=Hx-languages-length:910, HX-Received:Fri, HContent-Transfer-Encoding:8bit X-Spam-User: qpsmtpd, 3 recipients X-HELO: mail-wm0-f66.google.com Received: from mail-wm0-f66.google.com (HELO mail-wm0-f66.google.com) (74.125.82.66) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Fri, 18 Mar 2016 07:56:44 +0000 Received: by mail-wm0-f66.google.com with SMTP id l68so4130944wml.3; Fri, 18 Mar 2016 00:56:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:user-agent:in-reply-to:references:mime-version :content-transfer-encoding:subject:from:date:to:cc:message-id; bh=YVAL9WEQpwLviQqAGd1j5AvTZDfTFimxSLZnQZDbURk=; b=cwNzlcZxZJFR5YOkxO2OebV4wRCZCwFmq9pxwd7EywIfy1r6+kdnW22aZKrTfbfz3H zXQUCZmkDyAu+iqkNrkipB3+ZLfrUPi+Z5UtqzXQ9PqI1LmcnlapWZfJ9UBpgFCCxiXG RwVEdGORQZ6p6HYdALhY0cx9HdAok0H3QlGW3vKUqOOI+RPy5G0ZZJf8/POE9YprSuxG 3X5l4+nrOx12awoyoR0xH4DyCkVqNFeonfIyb13r7/J7Fcw8onOam9XFncaR3YxtNqZN sRGXdkz1miedyVLNWcWpqT+GKRb7xdji87Q3Yl5LLeXNlPPt1AJLCHC5xnC0KyumNJjZ ovCQ== X-Gm-Message-State: AD7BkJLFhlhw6EUpZnWCbmOM0lrAzbx6ePXVpjMuLwdZGoweElp5cU/wGKyCOJgZTqj+ug== X-Received: by 10.194.94.138 with SMTP id dc10mr16372900wjb.37.1458287801582; Fri, 18 Mar 2016 00:56:41 -0700 (PDT) Received: from [10.48.188.231] (089144230231.atnat0039.highway.a1.net. [89.144.230.231]) by smtp.gmail.com with ESMTPSA id p191sm6445053wmb.0.2016.03.18.00.56.39 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 18 Mar 2016 00:56:40 -0700 (PDT) User-Agent: K-9 Mail for Android In-Reply-To: <56EB8F3E.90901@windriver.com> References: <1458205064-10251-1-git-send-email-hongxu.jia@windriver.com> <56EB5766.7010109@windriver.com> <56EB8F3E.90901@windriver.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Subject: Re: [PATCH V3]PR other/70268: map one directory name (old) to another (new) in __FILE__ From: Bernhard Reutner-Fischer Date: Fri, 18 Mar 2016 08:05:00 -0000 To: Hongxu Jia ,Joseph Myers CC: jakub@gcc.gnu.org,rguenth@gcc.gnu.org,gcc-patches@gcc.gnu.org,richard.purdie@linuxfoundation.org Message-ID: <97BE5D73-0EDD-43ED-9B71-FB477D7E2701@gmail.com> X-IsSubscribed: yes X-SW-Source: 2016-03/txt/msg01070.txt.bz2 On March 18, 2016 6:16:46 AM GMT+01:00, Hongxu Jia wrote: +/* Perform user-specified mapping of __FILE__ prefixes. Return + the new name corresponding to filename. */ + +const char * +remap_file_filename (const char *filename) +{ + file_prefix_map *map; + char *s; + const char *name; + size_t name_len; + + for (map = file_prefix_maps; map; map = map->next) + if (filename_ncmp (filename, map->old_prefix, map->old_len) == 0) + break; + if (!map) + return filename; + name = filename + map->old_len; + name_len = strlen (name) + 1; + s = (char *) alloca (name_len + map->new_len); + memcpy (s, map->new_prefix, map->new_len); + memcpy (s + map->new_len, name, name_len); + + return xstrdup (s); +} Please explain why you first alloca() and then strdup the result instead of XNEWVEC Thanks,