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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 <objc/runtime.h>
/* For objc_msg_lookup(), objc_msg_lookup_super() and struct
objc_super. */
#include <objc/message.h>
#include <stdlib.h>
#include <iostream>
#include <cstring>
@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);
}
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