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/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */

/* { dg-do compile } */

/* Test that you get a warning when an unknown protocol attribute is ignored.  */

#include <objc/objc.h>

__attribute__ ((unknown_attribute))

@protocol MyProtocol

- (id) new; /* { dg-warning "ignored" } */

@end

__attribute__ ((unknown_attribute))

@protocol MyProtocol2; /* { dg-warning "ignored" } */

/* Use the protocols to double-check that no more warnings are

   generated.  */

@interface MyClass <MyProtocol>

@end

int test (id <MyProtocol2> x)

{

  if (@protocol (MyProtocol) == @protocol (MyProtocol2))

    return 1;

  if (x)

    return 2;

  return 3;

}