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/* Ensure that the compiler does not emit spurious extern declarations named '_Foo', where 'Foo'

   is an ObjC class name.  */

/* Contributed by Ziemowit Laski <zlaski@apple.com>.  */

/* { dg-do run } */

#include <objc/Object.h>

#include <stdlib.h>

#define CHECK_IF(expr) if(!(expr)) abort()

@interface _Child: Object

+ (int) flashCache;

@end

@interface Child: _Child

+ (int) flushCache1;

@end

@interface Child (Categ)

+ (int) flushCache2;

@end

int _Object = 23;  /* Should not conflict with @interface Object.  */

@implementation _Child

+ (int) flashCache { return 12 + _Object; }

@end

@implementation Child

+ (int) flushCache1 { return 7 + [super flashCache]; }

@end

@implementation Child (Categ)

+ (int) flushCache2 { return 9 + [super flashCache]; }

@end

int main(void) {

  CHECK_IF([_Child flashCache] == 35);

  CHECK_IF([Child flushCache1] == 42);

  CHECK_IF([Child flushCache2] == 44);

  return 0;

}