From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-f49.google.com (mail-wm1-f49.google.com [209.85.128.49]) by sourceware.org (Postfix) with ESMTPS id F2D05385B52F for ; Mon, 28 Nov 2022 15:48:01 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org F2D05385B52F Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=palves.net Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-wm1-f49.google.com with SMTP id a11-20020a05600c2d4b00b003cf6f5fd9f1so8694061wmg.2 for ; Mon, 28 Nov 2022 07:48:01 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:from:references:to:subject :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=893xYYjsirFPEgdHftwtmf/esneDmQaJaMDlntHYFOE=; b=modG3cIvYSI4wU4+vhqLxAjIXFKlzTzEYAm5nDI7GyxHkl40wqGMs5FaYb6dlyeVnf df93B+pfVY7KiPzS7qGcZajuWBjpVpJPh/cnhmmPUsD02xUQ3rCgKo2pah78uNiZuunM b9r5PO1uchb85B1qQYGMbg2eKvcbMIK2hFgqo/dIka8thHYq9X0NehVUHWxfLh37+kp9 vtHJSuIeT2RPq0c9jobeidb2GgSiVUvbq5PTPxof40IH09PdKScun0vqEu7VWA7B/CT0 eeoCVEp1VKJn2LPD/55x9YMtENly2LOKUah/zh4vnB6UULZ6kJGEudj2K02UQYf15LA8 b9cQ== X-Gm-Message-State: ANoB5pkKIt3C4kbof4c4KMOcIaZhnytLlJR/XkSSquvpB4iGWH2JwSgV TQDf4ylzj2aFRXysllTe2ZmhP5ZdnnBCmw== X-Google-Smtp-Source: AA0mqf5XlUaV80arAR3PPif4o+jspuMUt7yEYeze6oFmDCGz9DTBGGZ9cv68JtpcOPTkZoKSTjFUcA== X-Received: by 2002:a1c:f006:0:b0:3cf:7b68:631 with SMTP id a6-20020a1cf006000000b003cf7b680631mr42665607wmb.55.1669650480541; Mon, 28 Nov 2022 07:48:00 -0800 (PST) Received: from ?IPv6:2001:8a0:f912:6700:afd9:8b6d:223f:6170? ([2001:8a0:f912:6700:afd9:8b6d:223f:6170]) by smtp.gmail.com with ESMTPSA id v8-20020adfebc8000000b00236545edc91sm11254698wrn.76.2022.11.28.07.47.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Nov 2022 07:48:00 -0800 (PST) Subject: Re: [PATCH] gdb: relax requirement for the map_failed stap probe to be present To: Andrew Burgess , Simon Marchi , gdb-patches@sourceware.org References: <9b1fe2f9-b4a9-17a8-1175-a1a776db1afc@simark.ca> <87y1s03a0a.fsf@redhat.com> From: Pedro Alves Message-ID: <6b056607-1690-0349-f1d9-00a1620870db@palves.net> Date: Mon, 28 Nov 2022 15:47:58 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <87y1s03a0a.fsf@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.7 required=5.0 tests=BAYES_00,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,KAM_DMARC_STATUS,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 2022-11-24 10:46 a.m., Andrew Burgess via Gdb-patches wrote: > commit 11be1f25f446e68c23d0709cde46e32ff24b7eb9 > Author: Andrew Burgess > Date: Tue Nov 22 12:45:56 2022 +0000 > > gdb: relax requirement for the map_failed stap probe to be present > > From glibc 2.35 and later, the "map_failed" stap probe is no longer > included in glibc. The removal of the probe looks like an accident, > but it was caused by a glibc commit which meant that the "map_failed" > probe could no longer be reached; the compiler than helpfully than -> then > optimised out the probe. >