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/* Ensure there are no bizarre difficulties with accessing the 'isa' field of objects.  */
/* { dg-do compile } */
 
#include "../objc-obj-c++-shared/TestsuiteObject.h"
#include "../objc-obj-c++-shared/runtime.h"
 
@interface TestsuiteObject (Test)
- (Class) test1: (id)object;
@end
 
@interface Derived: TestsuiteObject
- (Class) test2: (id)object;
@end
 
@implementation TestsuiteObject (Test)
 
Class test1(id object) {
#ifdef __NEXT_RUNTIME__
    Class cls = object->isa;
#else
    Class cls = object->class_pointer;
#endif
    return cls;
}
- (Class) test1: (id)object {
#ifdef __NEXT_RUNTIME__
    Class cls = object->isa;
#else
    Class cls = object->class_pointer;
#endif
    return cls;
}
 
@end
 
@implementation Derived
 
Class test2(id object) {
#ifdef __NEXT_RUNTIME__
    Class cls = object->isa;
#else
    Class cls = object->class_pointer;
#endif
    return cls;
}
- (Class) test2: (id)object {
#ifdef __NEXT_RUNTIME__
    Class cls = object->isa;
#else
    Class cls = object->class_pointer;
#endif
    return cls;
}
 
@end
 
Class test3(id object) {
#ifdef __NEXT_RUNTIME__
    Class cls = object->isa;
#else
    Class cls = object->class_pointer;
#endif
    return cls;
}