fdecl.m

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

/* Bug report submitted by [e-mail] on [e-mail]
   Thu, 13 Apr 2000 09:42:08 -0400 */

@class AClass;

@interface test
{
        AClass *foo;
}
@end

@implementation test
@end

int main (void)
{
  return 0;
}