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// RUN: clang -fsyntax-only -verify %s
@class SUPER, Y;
@interface INTF :SUPER // expected-error {{cannot find interface declaration for 'SUPER', superclass of 'INTF'}}
@end
@interface SUPER @end
@interface INTF1 : SUPER
@end
@interface INTF2 : INTF1
@end
@interface INTF3 : Y // expected-error {{cannot find interface declaration for 'Y', superclass of 'INTF3'}}
@end
@interface INTF1 // expected-error {{duplicate interface declaration for class 'INTF1'}}
@end
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