From patchwork Wed Sep 16 17:19:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 305202 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=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham 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 905ECC43461 for ; Wed, 16 Sep 2020 17:20:53 +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 08AF522268 for ; Wed, 16 Sep 2020 17:20:53 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Wed, 16 Sep 2020 17:19:20 +0000 (UTC) Received: from thuth.com (ovpn-113-19.ams2.redhat.com [10.36.113.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8B963702E7; Wed, 16 Sep 2020 17:19:15 +0000 (UTC) From: Thomas Huth To: Juan Quintela , "Dr. David Alan Gilbert" , qemu-devel@nongnu.org Subject: [PATCH] migration: Silence compiler warning in global_state_store_running() Date: Wed, 16 Sep 2020 19:19:13 +0200 Message-Id: <20200916171913.148681-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=thuth@redhat.com X-Mimecast-Spam-Score: 0.003 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.81; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 11:15:25 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.999, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-trivial@nongnu.org, =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Richard Henderson , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" GCC 9.3.0 on Ubuntu complains: In file included from /usr/include/string.h:495, from /home/travis/build/huth/qemu/include/qemu/osdep.h:87, from ../migration/global_state.c:13: In function ‘strncpy’, inlined from ‘global_state_store_running’ at ../migration/global_state.c:47:5: /usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ specified bound 100 equals destination size [-Werror=stringop-truncation] 106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... but we apparently really want to do the strncpy here. Silence the warning with QEMU_NONSTRING. Signed-off-by: Thomas Huth Reviewed-by: Eric Blake --- migration/global_state.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/migration/global_state.c b/migration/global_state.c index 25311479a4..f1355d7d97 100644 --- a/migration/global_state.c +++ b/migration/global_state.c @@ -43,9 +43,9 @@ int global_state_store(void) void global_state_store_running(void) { const char *state = RunState_str(RUN_STATE_RUNNING); + QEMU_NONSTRING char *dest = (char *)global_state.runstate; assert(strlen(state) < sizeof(global_state.runstate)); - strncpy((char *)global_state.runstate, - state, sizeof(global_state.runstate)); + strncpy(dest, state, sizeof(global_state.runstate)); } bool global_state_received(void)