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 C9236384B0EC for ; Tue, 2 Aug 2022 16:35:00 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org C9236384B0EC Received: from mail-qk1-f199.google.com (mail-qk1-f199.google.com [209.85.222.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-141-ncpCvypfNpuF32rWZNpTdg-1; Tue, 02 Aug 2022 12:34:59 -0400 X-MC-Unique: ncpCvypfNpuF32rWZNpTdg-1 Received: by mail-qk1-f199.google.com with SMTP id bj26-20020a05620a191a00b006b5c4e2dc77so11913226qkb.16 for ; Tue, 02 Aug 2022 09:34:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=user-agent:in-reply-to:content-transfer-encoding :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:x-gm-message-state:from:to:cc; bh=6cZRj9uqR2oDMG/85w0uKADKZ7+4KFo/xmMn6D1JaE8=; b=MjKvFyeN6ozbt2vJxKLVUDKu2oDrWrhjj0yLixqhIY1cZa9Woxv65Z3gVc8GV0fmtj Ds6EYUClVqMT/qIPxq/Zuq0HRtBYb4RWakEDjOhzIZBpC6kUmlkQwcuuy2GIwdaKMjU0 UHm+fxFPTxf27xlO7ruqCNIkqITMEpRO4IDPPcMjGUFz+z6lSNnM93J6K8pYqiIsq8BH e+Dvv5LVn6QGlN5SnPKblu+a5qJYkBHx9Tdpsbn326S1XesI1YP2EpNFrcfZz3B5Mihl E2k263/woyer7mOkiMUChbWH1JRPGRhaeYN8xO6h0faKozhxzqRr0sgvem4FNaeWutVQ 2myA== X-Gm-Message-State: AJIora+6kGbzwoCfIDTenHAkhTnSN9e7IkNTaJU5WKjAU+MytroYXs7d Z9Jq3gzHgD/xieADd5cS8wAr3yjAAwfgrRNGpmT+pp0nQZ9Rg0PfiMWLLJNSAQHbXFejRNhuKck 8+oi3566Yr0V/sBYcWA== X-Received: by 2002:a05:620a:4913:b0:6b6:300:54ad with SMTP id ed19-20020a05620a491300b006b6030054admr15868464qkb.68.1659458099090; Tue, 02 Aug 2022 09:34:59 -0700 (PDT) X-Google-Smtp-Source: AGRyM1u/CKhS9cWI2d23FtWVEyAG6c2Z/FNv0krnrgetJ35lzgUcakstVKzCaj0Cv22LxfmOae7q4A== X-Received: by 2002:a05:620a:4913:b0:6b6:300:54ad with SMTP id ed19-20020a05620a491300b006b6030054admr15868457qkb.68.1659458098843; Tue, 02 Aug 2022 09:34:58 -0700 (PDT) Received: from redhat.com ([2601:184:4780:4310::6c36]) by smtp.gmail.com with ESMTPSA id h10-20020a05620a284a00b006b5cb0c512asm11248620qkp.101.2022.08.02.09.34.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Aug 2022 09:34:58 -0700 (PDT) Date: Tue, 2 Aug 2022 12:34:56 -0400 From: Marek Polacek To: Qing Zhao Cc: "joseph@codesourcery.com" , gcc-patches Subject: Re: How to check -std=c89 or -std=gnu89 is set in C FE? Message-ID: References: <8A1C5AF0-9114-43C0-9FFF-E524A5B4AEE4@oracle.com> MIME-Version: 1.0 In-Reply-To: <8A1C5AF0-9114-43C0-9FFF-E524A5B4AEE4@oracle.com> User-Agent: Mutt/2.2.6 (2022-06-05) X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-6.3 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 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: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Aug 2022 16:35:02 -0000 On Tue, Aug 02, 2022 at 04:19:56PM +0000, Qing Zhao via Gcc-patches wrote: > Hi, Joseph, > > When -std=c89 or -std=gnu89 present in the command line, in C FE, which flags should be > checked to decide it’s -std=c89 or -std=gnu89? You should be able to check flag_iso and related. Marek