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s390x: fix clang 11 warnings in cpu_models.c 

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 <dbuono@linux.vnet.ibm.com>
Message-Id: <20201105221905.1350-3-dbuono@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Daniele Buono 2020-11-05 17:18:58 -05:00 committed by Thomas Huth
parent ad57e2b1f5
commit 074df27f74
1 changed files with 4 additions and 4 deletions
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8
target/s390x/cpu_models.c
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@ -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);