llvm-gcc-4.2/gcc/testsuite/llvm.objc/2007-10-18-ProDescriptor.m

/* { dg-do compile } */
@protocol O
@end
@interface O < O > {
}
@end
struct A {
};
@protocol AB
- (unsigned) ver;
@end
@interface AGy:O < AB > {
}
@end
@implementation AGy
- (unsigned) ver {
}
@end