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/* Test the Modern GNU Objective-C Runtime API.

   This is test 'objc_msg_lookup', covering objc_msg_lookup(),

   objc_msg_lookup_super() and struct objc_super.  */

/* { dg-do run } */

/* { dg-skip-if "" { *-*-* } { "-fnext-runtime" } { "" } } */

/* To get the modern GNU Objective-C Runtime API, you include

   objc/runtime.h.  */

#include 

/* For objc_msg_lookup(), objc_msg_lookup_super() and struct

   objc_super.  */

#include 

#include 

#include 

#include 

@interface MyRootClass

{ Class isa; }

+ alloc;

- init;

- (int) test;

@end

@implementation MyRootClass

+ alloc { return class_createInstance (self, 0); }

- init  { return self; }

- (int) test { return 20; }

@end

@interface MySubClass : MyRootClass

- (int) test;

@end

@implementation MySubClass

- (int) test { return 11; }

@end

int main ()

{

  /* Functions are tested in alphabetical order.  */

  std::cout << "Testing objc_msg_lookup () ...\n";

  {

    MySubClass *object = [[MySubClass alloc] init];

    int (* test_IMP) (id receiver, SEL selector);

    test_IMP = (int (*)(id, SEL))objc_msg_lookup (object, @selector (test));

    if (test_IMP (object, @selector (test)) != 11)

      abort ();

  }

  std::cout << "Testing objc_msg_lookup_super () ...\n";

  {

    MySubClass *object = [[MySubClass alloc] init];

    struct objc_super super = { 0, 0 };

    int (* test_IMP) (id receiver, SEL selector);

    /* Get the implementation of -test for the superclass of object -

       as if we were calling [super test] inside a method

       implementation of object.  */

    super.self = object;

    super.super_class = class_getSuperclass (object_getClass (object));

    test_IMP = (int (*)(id, SEL))objc_msg_lookup_super (&super, @selector (test));

    /* Invoke it.  The method in MyRootClass, not the one in

       MySubClass, should be invoked.  */

    if (test_IMP (object, @selector (test)) != 20)

      abort ();

  }

  return (0);

}