From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34769C43465 for ; Mon, 21 Sep 2020 13:12:59 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 52FAC21789 for ; Mon, 21 Sep 2020 13:12:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 52FAC21789 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56610 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kKLcn-0003o0-4y for qemu-devel@archiver.kernel.org; Mon, 21 Sep 2020 09:12:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45956) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kKLbD-0002tC-Gq for qemu-devel@nongnu.org; Mon, 21 Sep 2020 09:11:21 -0400 Received: from indium.canonical.com ([91.189.90.7]:52490) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kKLb5-00087f-Kh for qemu-devel@nongnu.org; Mon, 21 Sep 2020 09:11:17 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1kKLb2-0005mX-Kr for ; Mon, 21 Sep 2020 13:11:08 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 98BC62E80DC for ; Mon, 21 Sep 2020 13:11:08 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Mon, 21 Sep 2020 12:59:44 -0000 From: Stefan Hajnoczi <1895471@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=New; importance=Undecided; assignee=None; X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: ameynarkhede stefanha X-Launchpad-Bug-Reporter: Amey Narkhede (ameynarkhede) X-Launchpad-Bug-Modifier: Stefan Hajnoczi (stefanha) References: <160002337216.747.16078826830052525094.malonedeb@chaenomeles.canonical.com> Message-Id: <160069318448.14183.17353672468451830444.malone@gac.canonical.com> Subject: [Bug 1895471] Re: compilation error with clang in util/async.c X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="83bdf6c8a3a5f87722c8927e54838522f3e57504"; Instance="production" X-Launchpad-Hash: cf1143f04b44b692d34fa2a76469fd5d91b64f8b Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/21 07:41:04 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1895471 <1895471@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Mailing list discussion about how to fix this: https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg07392.html -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1895471 Title: compilation error with clang in util/async.c Status in QEMU: New Bug description: configured with ` CC=3Dclang CXX=3Dclang++ ../configure --target- list=3Dx86_64-softmmu --enable-kvm --enable-curl --enable-debug --enable-jemalloc --enable-fuzzing --enable-sdl` and after make I get the following error related to c11 atomics. I'm using clang because I'm experimenting with fuzzer [glitz@archlinux /code/qemu/build]$ ninja -j5 [479/2290] Compiling C object libqemuutil.a.p/util_async.c.o FAILED: libqemuutil.a.p/util_async.c.o clang -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/i= nclude/p11-kit-1 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr= /include/libmount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -Ilinux-= headers -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std= =3Dgnu99 -g -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=3D64 -D_LARGEFILE= _SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmis= sing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-defini= tion -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qua= lifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined= -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-v= alue -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-= limit-compare -fstack-protector-strong -fsanitize=3Dfuzzer-no-link -iquote = /code/qemu/tcg/i386 -isystem /code/qemu/linux-headers -iquote . -iquote /co= de/qemu -iquote /code/qemu/accel/tcg -iquote /code/qemu/include -iquote /co= de/qemu/disas/libvixl -pthread -fPIC -MD -MQ libqemuutil.a.p/util_async.c.o= -MF libqemuutil.a.p/util_async.c.o.d -o libqemuutil.a.p/util_async.c.o -c = ../util/async.c ../util/async.c:79:17: error: address argument to atomic operation must b= e a pointer to _Atomic type ('unsigned int *' invalid) old_flags =3D atomic_fetch_or(&bh->flags, BH_PENDING | new_flags); ^ ~~~~~~~~~~ /usr/lib/clang/10.0.1/include/stdatomic.h:138:42: note: expanded from mac= ro 'atomic_fetch_or' #define atomic_fetch_or(object, operand) __c11_atomic_fetch_or(object, op= erand, __ATOMIC_SEQ_CST) ^ ~~~~~~ ../util/async.c:105:14: error: address argument to atomic operation must = be a pointer to _Atomic type ('unsigned int *' invalid) *flags =3D atomic_fetch_and(&bh->flags, ^ ~~~~~~~~~~ /usr/lib/clang/10.0.1/include/stdatomic.h:144:43: note: expanded from mac= ro 'atomic_fetch_and' #define atomic_fetch_and(object, operand) __c11_atomic_fetch_and(object, = operand, __ATOMIC_SEQ_CST) ^ ~~~~~~ 2 errors generated. [483/2290] Compiling C object libqemuutil.a.p/util_qemu-error.c.o ninja: build stopped: subcommand failed. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1895471/+subscriptions