Commit bf0fda34 authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Anthony Liguori
Browse files

qom: allow casting of a NULL class 



This mimics what we do in object_dynamic_cast_assert.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1368188203-3407-3-git-send-email-pbonzini@redhat.com
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent 33bc94eb

qom/object.c

+9 −3
Original line number Diff line number Diff line
@@ -449,10 +449,16 @@ Object *object_dynamic_cast_assert(Object *obj, const char *typename) 
ObjectClass *object_class_dynamic_cast(ObjectClass *class,

                                       const char *typename)

{

    TypeImpl *target_type = type_get_by_name(typename);

    TypeImpl *type = class->type;

    ObjectClass *ret = NULL;

    TypeImpl *target_type;

    TypeImpl *type;



    if (!class) {

        return NULL;

    }



    type = class->type;

    target_type = type_get_by_name(typename);

    if (!target_type) {

        /* target class type unknown, so fail the cast */

        return NULL;
@@ -488,7 +494,7 @@ ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, 
{

    ObjectClass *ret = object_class_dynamic_cast(class, typename);



    if (!ret) {

    if (!ret && class) {

        fprintf(stderr, "Object %p is not an instance of type %s\n",

                class, typename);

        abort();