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Sat, 23 Jan 2021 09:31:52 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-126-b_eIwO2KO9WZnVZzUB9tsQ-1; Sat, 23 Jan 2021 09:31:33 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5D04B1005586; Sat, 23 Jan 2021 14:31:32 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 125AB5D9CC; Sat, 23 Jan 2021 14:31:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611412295; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nJoJqcVD0FeihSpvSKdIlKLidD1YQnN95uh2EZwyz5A=; b=ULYThxNq9jFoHRLeaAMbrdjP/QNnoEg24Yi4N+JEXun9Ri/uLRtLIRK0dkPvzuwksEP0I4 6pF0tzuno4SjVj7nKYmxmsKAVXxyAfWyQR/DPGnJSrCz0OHQhksm6k3gE1gdFG4ASY78h8 tBnheFX08de+RC7BNtVT4GM9a0hCISE= X-MC-Unique: b_eIwO2KO9WZnVZzUB9tsQ-1 From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 06/31] softmmu/physmem: Silence GCC 10 maybe-uninitialized error Date: Sat, 23 Jan 2021 09:31:03 -0500 Message-Id: <20210123143128.1167797-7-pbonzini@redhat.com> In-Reply-To: <20210123143128.1167797-1-pbonzini@redhat.com> References: <20210123143128.1167797-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.165, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) From: Philippe Mathieu-Daud=C3=A9 When building with GCC 10.2 configured with --extra-cflags=3D-Os, we get: softmmu/physmem.c: In function 'address_space_translate_for_iotlb': softmmu/physmem.c:643:26: error: 'notifier' may be used uninitialized in = this function [-Werror=3Dmaybe-uninitialized] 643 | notifier->active =3D true; | ^ softmmu/physmem.c:608:23: note: 'notifier' was declared here 608 | TCGIOMMUNotifier *notifier; | ^~~~~~~~ Initialize 'notifier' to silence the warning. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20210117170411.4106949-1-f4bug@amsat.org> Signed-off-by: Paolo Bonzini --- softmmu/physmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/softmmu/physmem.c b/softmmu/physmem.c index 6301f4f0a5..cdcd197656 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -605,7 +605,7 @@ static void tcg_register_iommu_notifier(CPUState *cpu, * when the IOMMU tells us the mappings we've cached have changed. */ MemoryRegion *mr =3D MEMORY_REGION(iommu_mr); - TCGIOMMUNotifier *notifier; + TCGIOMMUNotifier *notifier =3D NULL; int i; =20 for (i =3D 0; i < cpu->iommu_notifiers->len; i++) { --=20 2.26.2