1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3@protocol P // expected-note {{previous}}
4-(void)meth1;
5@end
6
7@interface I // expected-note {{previous}}
8@end
9
10@interface I2
11@end
12@interface I2(C) // expected-note {{previous}}
13@end
14
15extern "C" {
16@protocol P // expected-warning {{duplicate protocol definition of 'P' is ignored}}
17-(void)meth2;
18@end
19
20@interface I // expected-error {{duplicate}}
21@end
22
23@interface I2(C) // expected-warning {{duplicate}}
24@end
25}
26
27void test(id<P> p) {
28  [p meth1];
29  [p meth2]; // expected-warning {{not found}}
30}
31