From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 94E563858439 for ; Wed, 6 Jul 2022 09:06:53 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 94E563858439 Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-301-MIqGSpBkNEym6If76K5CPQ-1; Wed, 06 Jul 2022 05:06:51 -0400 X-MC-Unique: MIqGSpBkNEym6If76K5CPQ-1 Received: by mail-ed1-f72.google.com with SMTP id m20-20020a056402431400b0043a699cdd6eso5386164edc.9 for ; Wed, 06 Jul 2022 02:06:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent :content-language:to:from:subject:content-transfer-encoding; bh=joXyxoa8Pm4zAQ1t40hOUvXsrww8T+R0ZLKkw/31vaU=; b=HwQ2/wKbGIS4k9CMCXfrcMOwTGnsnLJ08BcNI8Vk62i1xJxMXtpR+zCS+isyvU/LUJ wf09KxUIb/+i5lF8z+gpxY4XawJvdRECn9hm4V8Kupg4gon5yZb3Oy3duxUdlhLUJjWa fj0oqgThWqI95Hvzo8vXI6jaWBAAC+7oqwSJK1Ih86XD+6JlzIv0cGMVWkJ4kQezFs7P w6eaMmkL63ghE/JGhfJaZ+uU4wzykxijf7jUzlJ9Sg7mhcPy5oLcjzTBB3R/adlmk4/K KhLULnLW8TiLHiIOUa3CDN/RhOKq+Y+XyN4knhERLv6gh3u5XIacaUQH6X4uNX3WNy7T XtMQ== X-Gm-Message-State: AJIora87dDH/4ZXsk8zVu6zwT9RFuy5QBbtqb3T7pLLEzk+h8khzUXJd 2LTwVumj8wipeEg4TO5ghdDK63f8lnF8GLOPiqgS7wdtwVpArSYi+fGR8dfLFzceijckT5ZHgQv lNH2G56U2eZjkqpvXrPyd4HvNEfsPkwUlOoZ0XVRIz03m9W0utsrjjJKOUp4Z0VgrcCZTHQ== X-Received: by 2002:a17:907:869e:b0:72a:a008:82fc with SMTP id qa30-20020a170907869e00b0072aa00882fcmr23454107ejc.549.1657098410476; Wed, 06 Jul 2022 02:06:50 -0700 (PDT) X-Google-Smtp-Source: AGRyM1vm+pBx0yvvhlxUrH7E6+inmMWVg3N/RRghh6Aef2UUxIrZvYRb8HFhqLkwM69LfWc4b72QWA== X-Received: by 2002:a17:907:869e:b0:72a:a008:82fc with SMTP id qa30-20020a170907869e00b0072aa00882fcmr23454092ejc.549.1657098410228; Wed, 06 Jul 2022 02:06:50 -0700 (PDT) Received: from [192.168.188.47] (dynamic-077-006-206-093.77.6.pool.telefonica.de. [77.6.206.93]) by smtp.gmail.com with ESMTPSA id g16-20020a170906539000b0072af7566927sm736527ejo.13.2022.07.06.02.06.49 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 Jul 2022 02:06:49 -0700 (PDT) Message-ID: <38ff8f84-c34c-8a90-6070-4cbe62835940@redhat.com> Date: Wed, 6 Jul 2022 11:06:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 To: binutils@sourceware.org From: Stephan Bergmann Subject: Deliberate deduplication of -rpath arguments in ld.bfd and ld.gold? X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jul 2022 09:06:54 -0000 Over in the comments at "[LLD][ELF] Drop duplicates from rpath" we wonder what the rationale might be that both ld.bfd and ld.gold apparently deliberately drop duplicated -rpath arguments with identical paths (as in > $ cat test.c > void f(void) {} > $ gcc -c test.c > $ ld.bfd -rpath=/path -rpath=/path -shared test.o > $ readelf -d a.out | grep RUNPATH > 0x000000000000001d (RUNPATH) Library runpath: [/path] for example). For the relevant code in ld.bfd see `/* First see whether OPTARG is already in the path. */` ever since "19990502 sourceware import") and for the relevant code in ld.gold see `// Eliminate duplicates.` since "Add support for -rpath."