From patchwork Tue Jul 26 16:44:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ammar Faizi X-Patchwork-Id: 12929523 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB7B6C04A68 for ; Tue, 26 Jul 2022 16:45:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233355AbiGZQpJ (ORCPT ); Tue, 26 Jul 2022 12:45:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54472 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239010AbiGZQpI (ORCPT ); Tue, 26 Jul 2022 12:45:08 -0400 Received: from gnuweeb.org (gnuweeb.org [51.81.211.47]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8666103 for ; Tue, 26 Jul 2022 09:45:06 -0700 (PDT) Received: from integral2.. (unknown [125.160.106.238]) by gnuweeb.org (Postfix) with ESMTPSA id D27207E254; Tue, 26 Jul 2022 16:45:03 +0000 (UTC) X-GW-Data: lPqxHiMPbJw1wb7CM9QUryAGzr0yq5atzVDdxTR0iA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1658853906; bh=/eUd7bmBYeMu1TkW7KfYCNBj5f6Xq9Yxi+IljF55o24=; h=From:To:Cc:Subject:Date:From; b=QUcOKx3O/ATjiqvfobKyJZ/KJgJAZYivXK/TGiE5PV77NwjJVbsN45v359aAlNU12 kgq4zSOJABJPQTgx5EQKrkBsT2710qNzfbSEPaDevTgkpQWct8/Xmj+6xHHq6339KI ed7wzunk9zwBPY2Dnaaw3wLu/nWFW/5n6UmJhRLi6Svi1w+jx8KRCfquGYHV1FhzMx 1U+OzjUM1GTrTzZh2CSOyFLVm6NEPg+Dm7JsSiKNv13D+50KVQVJnloGtaHazBtD4i 9HvQMO1TDR3izQlXvEJWDyWP7uIFtpU4lONJmrLCFNlCRHTHQ7UdpZATxmJjsl/A7R jEhgGaIXzplBw== From: Ammar Faizi To: Jens Axboe Cc: Ammar Faizi , Fernanda Ma'rouf , Pavel Begunkov , io-uring Mailing List , GNU/Weeb Mailing List , Dylan Yudaken , Facebook Kernel Team Subject: [PATCH liburing] examples/io_uring-udp: Use a proper cast for `(struct sockaddr *)` argument Date: Tue, 26 Jul 2022 23:44:59 +0700 Message-Id: <20220726164310.266060-1-ammar.faizi@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Ammar Faizi Sometimes the compiler accepts `(struct sockaddr_in *)` and `(struct sockaddr_in6 *)` to be passed in to `(struct sockaddr *)` without a cast. But not all compilers agree with that. Building with clang 13.0.1 yields the following errors: io_uring-udp.c:134:18: error: incompatible pointer types passing \ 'struct sockaddr_in6 *' to parameter of type 'const struct sockaddr *' \ [-Werror,-Wincompatible-pointer-types io_uring-udp.c:142:18: error: incompatible pointer types passing \ 'struct sockaddr_in *' to parameter of type 'const struct sockaddr *' \ [-Werror,-Wincompatible-pointer-types] Explicitly cast the pointer to (struct sockaddr *) to avoid this error. Cc: Dylan Yudaken Cc: Facebook Kernel Team Fixes: 61d472b51e761e61cbf46caea40aaf40d8ed1484 ("add an example for a UDP server") Signed-off-by: Ammar Faizi --- examples/io_uring-udp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) base-commit: 61d472b51e761e61cbf46caea40aaf40d8ed1484 diff --git a/examples/io_uring-udp.c b/examples/io_uring-udp.c index 77472df..b4ef0a3 100644 --- a/examples/io_uring-udp.c +++ b/examples/io_uring-udp.c @@ -131,7 +131,7 @@ static int setup_sock(int af, int port) .sin6_addr = IN6ADDR_ANY_INIT }; - ret = bind(fd, &addr6, sizeof(addr6)); + ret = bind(fd, (struct sockaddr *) &addr6, sizeof(addr6)); } else { struct sockaddr_in addr = { .sin_family = af, @@ -139,7 +139,7 @@ static int setup_sock(int af, int port) .sin_addr = { INADDR_ANY } }; - ret = bind(fd, &addr, sizeof(addr)); + ret = bind(fd, (struct sockaddr *) &addr, sizeof(addr)); } if (ret) {