From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by sourceware.org (Postfix) with ESMTPS id 09BD73858D32; Tue, 28 Feb 2023 02:16:06 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 09BD73858D32 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pj1-x1036.google.com with SMTP id oj5so4262775pjb.5; Mon, 27 Feb 2023 18:16:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1677550565; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=HeYTwRcCo0ZdC1H2CfPmtb0m7qvNEZaz0JJwjAhHy08=; b=YYgPOjixx/jyf/qtaI+CyTzy87SgpLDnCare/jwkGeUqWCe37Jo7Y+XsdbjZ8Sm2iR k38u1T1IItHp5M8tyjb/LARvhau11qaG/4uFISMLsmnpcY92TK4WCpN7X08d1sxZpBV7 UlFCfIEckY9RjM98JuGgG7QjMrBj+Eakfr+DOBfa3t+ojM55P/PEwKcyuw7A+F7Ah/2e xhCIFVHmyiqdWCLb9UVV6ZeYbHbmKb4d0aJY/TwdQmTGqejs3z3XOp2sWHZSwZA9Pxpt kd64kB+GIHgVwFQJ0pRERei8EBMQEsQo382q3auXg3ea0vYQ03IM6JwVyaX6pWj9dB7/ Is/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1677550565; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=HeYTwRcCo0ZdC1H2CfPmtb0m7qvNEZaz0JJwjAhHy08=; b=DgSEDWBePAzNl5i8g/ZgpmfLvneLKzknCQz9IC5kuTBSvcJDLAhN1mONWHdv0L6e+k fByJJpMb1CAtIZr8moAreFZwYUky+/xE44INGeKJLetRuSUoCZtwlSqr+31OjgK6eJ3b Ki/tmYB5/NdiyrGfnJtphROHHju2bZQlqi6QDA2Oafddbxh8qbbTC38vKLINANEqthvU aClbrurRXVSb6rTZgfmmGPvpsNxi4ltaJ6FJetEf/s/0YvnxxfDOdaqTHybdDAk69/Gs KmjvH3XHS54Qke6fCuINawrpwN6ZRY8Ubi6NqUXx+7h7AyzOKUEvsQgAKx2bh4kqZS6D 4Z7g== X-Gm-Message-State: AO0yUKWE8vfxa0ggeX368auNOdZG8BMpW/1gYuYYqY0ZJc7spXd7X2+6 YZNigt0zNm83zcT078pN76U= X-Google-Smtp-Source: AK7set9RKqaG2zD9CxieqOMHX/wRmb2+A9IoTYMZv6oWsmrgLZwimH1tx5XmOTCYJatw0SLDd8d2Vg== X-Received: by 2002:a17:902:d2cf:b0:19a:a815:2853 with SMTP id n15-20020a170902d2cf00b0019aa8152853mr1176582plc.1.1677550564833; Mon, 27 Feb 2023 18:16:04 -0800 (PST) Received: from [192.168.1.20] ([50.37.188.226]) by smtp.gmail.com with ESMTPSA id a2-20020a170902710200b0019a7d6a9a76sm5221132pll.111.2023.02.27.18.16.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Feb 2023 18:16:04 -0800 (PST) Message-ID: <4f59e4c6-9bb9-daf8-6ed1-cc9235b54144@gmail.com> Date: Mon, 27 Feb 2023 18:16:03 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [patch, libgfortran] Initailize some variable to get rid of nuisance warnings. To: Tobias Burnus , Harald Anlauf , gfortran Cc: gcc-patches References: <17e31d5c-1579-8899-70b3-57e3115b2153@gmail.com> <303e0419-2b8c-d28f-4f1a-979ceeca55b1@gmx.de> <453af0ec-7fe6-bb7c-188d-787616494cc4@gmail.com> <4304f8e3-c755-2c3a-89ee-94882ca01293@codesourcery.com> Content-Language: en-US From: Jerry D In-Reply-To: <4304f8e3-c755-2c3a-89ee-94882ca01293@codesourcery.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,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: Pushed, thanks for feedback On 2/26/23 11:54 PM, Tobias Burnus wrote: > Just side remarks, the 0 init in the patch is fine. > > On 27.02.23 03:53, Jerry D via Gcc-patches wrote: > >>> regarding PACK: since this is a bogus warning as the compiler does >>> not realize that dim >= 1, wouldn't a >>> >>> gcc_assert (dim >= 1); > > Note: gcc_assert only exists in the compiler itself; in libgfortran, we > use GFC_ASSERT or directly 'assert'. > > You could also use 'if (dim < 1) __builtin_unreachable();' – or since > GCC 13: > > __attribute__((assume (dim >= 1))); > > Tobias > > PS: In Fortran, '-fopenmp-simd' plus '!$omp assume holds(dim>=0) ... > !$omp end assume' (or !$omp ... + block/end block) can be used to denote > such assumptions. '-fopenmp-simd' enables only those bits of OpenMP that > do not require any library support (no libgomp, no pthreads), contrary > to '-fopenmp'. > > ----------------- > Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, > 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: > Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; > Registergericht München, HRB 106955