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/* The following should NOT generate "may not respond to" warnings,
   since a forward-declared @class (instance) should be treated like a
   'Class') ('id').  */

/* { dg-do compile } */

#include <objc/Object.h>

@class NotKnown;

void foo(NotKnown *n) {
  [NotKnown new];
  [n nonexistent_method]; /* { dg-warning "no .\\-nonexistent_method. method found" } */
}

/* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 0 } */
/* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 0 } */
/* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 0 } */