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Thu, 5 Nov 2020 22:19:16 +0000 (GMT) Received: from Buonos-Thinkpad-X1.ibm.com (unknown [9.65.222.173]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 5 Nov 2020 22:19:16 +0000 (GMT) From: Daniele Buono To: dbuono@linux.vnet.ibm.com, qemu-devel@nongnu.org Subject: [PATCH v3 2/9] s390x: fix clang 11 warnings in cpu_models.c Date: Thu, 5 Nov 2020 17:18:58 -0500 Message-Id: <20201105221905.1350-3-dbuono@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201105221905.1350-1-dbuono@linux.vnet.ibm.com> References: <20201105221905.1350-1-dbuono@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-05_15:2020-11-05, 2020-11-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 clxscore=1015 adultscore=0 impostorscore=0 bulkscore=0 spamscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011050141 Received-SPF: none client-ip=148.163.156.1; envelope-from=dbuono@linux.vnet.ibm.com; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/05 17:19:16 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-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 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , David Hildenbrand , Cornelia Huck , Halil Pasic , Christian Borntraeger , "open list:S390 KVM CPUs" , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" There are void * pointers that get casted to enums, in cpu_models.c Such casts can result in a small integer type and are caught as warnings with clang, starting with version 11: Clang 11 finds a bunch of spots in the code that trigger this new warnings: ../qemu-base/target/s390x/cpu_models.c:985:21: error: cast to smaller integer type 'S390Feat' from 'void *' [-Werror,-Wvoid-pointer-to-enum-cast] S390Feat feat = (S390Feat) opaque; ^~~~~~~~~~~~~~~~~ ../qemu-base/target/s390x/cpu_models.c:1002:21: error: cast to smaller integer type 'S390Feat' from 'void *' [-Werror,-Wvoid-pointer-to-enum-cast] S390Feat feat = (S390Feat) opaque; ^~~~~~~~~~~~~~~~~ ../qemu-base/target/s390x/cpu_models.c:1036:27: error: cast to smaller integer type 'S390FeatGroup' from 'void *' [-Werror,-Wvoid-pointer-to-enum-cast] S390FeatGroup group = (S390FeatGroup) opaque; ^~~~~~~~~~~~~~~~~~~~~~ ../qemu-base/target/s390x/cpu_models.c:1057:27: error: cast to smaller integer type 'S390FeatGroup' from 'void *' [-Werror,-Wvoid-pointer-to-enum-cast] S390FeatGroup group = (S390FeatGroup) opaque; ^~~~~~~~~~~~~~~~~~~~~~ 4 errors generated. Avoid this warning by casting the pointer to uintptr_t first. Signed-off-by: Daniele Buono --- target/s390x/cpu_models.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index 461e0b8f4a..b5abff8bef 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -986,7 +986,7 @@ void s390_realize_cpu_model(CPUState *cs, Error **errp) static void get_feature(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { - S390Feat feat = (S390Feat) opaque; + S390Feat feat = (S390Feat) (uintptr_t) opaque; S390CPU *cpu = S390_CPU(obj); bool value; @@ -1003,7 +1003,7 @@ static void get_feature(Object *obj, Visitor *v, const char *name, static void set_feature(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { - S390Feat feat = (S390Feat) opaque; + S390Feat feat = (S390Feat) (uintptr_t) opaque; DeviceState *dev = DEVICE(obj); S390CPU *cpu = S390_CPU(obj); bool value; @@ -1037,7 +1037,7 @@ static void set_feature(Object *obj, Visitor *v, const char *name, static void get_feature_group(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { - S390FeatGroup group = (S390FeatGroup) opaque; + S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; const S390FeatGroupDef *def = s390_feat_group_def(group); S390CPU *cpu = S390_CPU(obj); S390FeatBitmap tmp; @@ -1058,7 +1058,7 @@ static void get_feature_group(Object *obj, Visitor *v, const char *name, static void set_feature_group(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { - S390FeatGroup group = (S390FeatGroup) opaque; + S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; const S390FeatGroupDef *def = s390_feat_group_def(group); DeviceState *dev = DEVICE(obj); S390CPU *cpu = S390_CPU(obj); -- 2.17.1