From nobody Sun Feb 8 03:57:58 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 151871353303794.94937774310165; Thu, 15 Feb 2018 08:52:13 -0800 (PST) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A402B62E88; Thu, 15 Feb 2018 16:52:11 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7571469284; Thu, 15 Feb 2018 16:52:11 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 3A17218033F4; Thu, 15 Feb 2018 16:52:11 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w1FGi0Sh025739 for ; Thu, 15 Feb 2018 11:44:00 -0500 Received: by smtp.corp.redhat.com (Postfix) id 6865D2024CAB; Thu, 15 Feb 2018 16:44:00 +0000 (UTC) Received: from localhost.localdomain.com (unknown [10.42.22.189]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0BC7F2024CA8; Thu, 15 Feb 2018 16:43:59 +0000 (UTC) From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: libvir-list@redhat.com Date: Thu, 15 Feb 2018 16:43:20 +0000 Message-Id: <20180215164347.11538-16-berrange@redhat.com> In-Reply-To: <20180215164347.11538-1-berrange@redhat.com> References: <20180215164347.11538-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH v2 15/42] m4: disable gcc8 -Wcast-function-type warnings from -Wextra X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Thu, 15 Feb 2018 16:52:12 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 The -Wextra flag bundle gained a new warning -Wcast-function-type. This complains if you cast between two function prototypes where the number of parameters or their data types are not compatible. Unfortunately we need such "bad" function casts for our event callbacks. It is possible to silence the warning by first casting to the generic "void (*)(void)" function prototype, but that is rather ugly to add throughout libvirt code. Signed-off-by: Daniel P. Berrang=C3=A9 --- m4/virt-compile-warnings.m4 | 2 ++ 1 file changed, 2 insertions(+) diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4 index 918764d362..fc185aef38 100644 --- a/m4/virt-compile-warnings.m4 +++ b/m4/virt-compile-warnings.m4 @@ -175,6 +175,8 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[ # with gl_MANYWARN_COMPLEMENT # So we have -W enabled, and then have to explicitly turn off... wantwarn=3D"$wantwarn -Wno-sign-compare" + # We do "bad" function casts all the time for event callbacks + wantwarn=3D"$wantwarn -Wno-cast-function-type" =20 # GNULIB expects this to be part of -Wc++-compat, but we turn # that one off, so we need to manually enable this again --=20 2.14.3 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list