From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by sourceware.org (Postfix) with ESMTPS id 38C4B386102D for ; Sat, 3 Oct 2020 22:02:13 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 38C4B386102D Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=jguk.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=jg@jguk.org Received: by mail-wr1-x42b.google.com with SMTP id z1so5571729wrt.3 for ; Sat, 03 Oct 2020 15:02:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jguk.org; s=google; h=to:from:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=r7+lumWWUX98uRTcebGU1bLjZ9hX73/THHLZ9LtPChE=; b=M6t50PZBQh2swgT84YmmmkB3hQKnSQ+cpuRD5D8jwcAH7tU/5LdyiWGgh9iFpPZAJx XKQxaaQLjrlc7ka7ZjPDO7ZSE8QBc6g3aLDhEbSapS226gkCiRnybaYGoLy3STt3buGI b7Mf1NvFbd5eqlAKj/lX7xTNIH/4rl3EsabcuT3qTsVO91pb//ImrQmkGFa6d8yM1tkR YJF2LHXi/nBf48DxaytV4UllIZ9KkhHK4G9mo8x7kpeNwSzSf5u5TSflncirDfdd6XBa YAxuTYMABcyBtQ+6LTcCuImjPAtPtePVVIlhbTEu+mZfXJ9klznS2VA/A4f4VQFCEAza hIHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=r7+lumWWUX98uRTcebGU1bLjZ9hX73/THHLZ9LtPChE=; b=ICM9CcFzWcU3xiPVr0gQJXd8q+/m7YeI2+a6TIgrKy9vNggojyZhb6d0d8T44U/2E2 rqMXudkEBHqWK5NfUaeueaEq7PB4aM8N0g6ShSymbzEP7MZF+XUphaZvQvmwiXt3r0NB lF1Hgi92SPr2sGO5ju4zInQLb50yT1OZXU5neVrXGomRr8gfYgOYBqVU39D178nQqAsa Ni+lQ2gEHOa8VFCtvVG+fskmiNEyiPOXTFCXq3ZGsxuCfW7RZVoeCgdKTU3QxdKTDA6Y kf8jI/I5Xhc2547NU1DLLh/F4a9YBes2XNk4tnfCTq+Vg6oMPDTV1zCpcH8cl4Qav1GJ DqzA== X-Gm-Message-State: AOAM533s3uTWEk5lw3FKrO8Y9tzOYvyRk0ch94HL0ilmUAgMWMtWuQTT /gTAUFtzYbQV9Shy019G5aF0ocK2EPQgtQ== X-Google-Smtp-Source: ABdhPJzSAJQkVCm/obgfyyCaXDw30OnNvCFeJxZIJSOHpQsTe81Ncx3cBNA5Aek1E5ndNT3S0VVlIw== X-Received: by 2002:a5d:62c3:: with SMTP id o3mr9872406wrv.295.1601762532063; Sat, 03 Oct 2020 15:02:12 -0700 (PDT) Received: from [192.168.0.12] (cpc87281-slou4-2-0-cust47.17-4.cable.virginm.net. [92.236.12.48]) by smtp.gmail.com with ESMTPSA id a81sm6788176wmf.32.2020.10.03.15.02.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 03 Oct 2020 15:02:11 -0700 (PDT) To: libc-alpha@sourceware.org From: Jonny Grant Subject: /usr/include/aio.h Message-ID: <1585f908-1ee9-5d00-1dd4-3fa16c70b042@jguk.org> Date: Sat, 3 Oct 2020 23:02:10 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Oct 2020 22:02:16 -0000 Hello Just wondering : a) why there are these macros like AIO_ALLDONE below? Surely the enum is enough. b) why the enum's aren't numbered, so when looking in a debugger it's easier to follow the number back to this header file /* Return values of cancelation function. */ enum { AIO_CANCELED, #define AIO_CANCELED AIO_CANCELED AIO_NOTCANCELED, #define AIO_NOTCANCELED AIO_NOTCANCELED AIO_ALLDONE #define AIO_ALLDONE AIO_ALLDONE }; Cheers, Jonny