1// RUN: %clang_cc1  -fsyntax-only -verify -Wno-objc-root-class %s
2// rdar://9224670
3
4@interface RandomObject {
5@private
6}
7+ (id)alloc;
8@end
9
10@protocol TestProtocol
11- (void)nothingInteresting;
12@end
13
14@protocol Test2Protocol
15+ (id)alloc;
16- (id)alloc2; // expected-note 2 {{method 'alloc2' declared here}}
17@end
18
19@implementation RandomObject
20- (void) Meth {
21    Class<TestProtocol> c = [c alloc]; //  expected-warning {{class method '+alloc' not found (return type defaults to 'id')}}
22    Class<Test2Protocol> c1 = [c1 alloc2]; //  expected-warning {{instance method 'alloc2' found instead of class method 'alloc2'}}
23    Class<Test2Protocol> c2 = [c2 alloc]; //  ok
24}
25+ (id)alloc { return 0; }
26@end
27
28int main ()
29{
30    Class<TestProtocol> c = [c alloc]; //  expected-warning {{class method '+alloc' not found (return type defaults to 'id')}}
31    Class<Test2Protocol> c1 = [c1 alloc2]; //  expected-warning {{instance method 'alloc2' found instead of class method 'alloc2'}}
32    Class<Test2Protocol> c2 = [c2 alloc]; //  ok
33    return 0;
34}
35
36// rdar://22812517
37
38@protocol NSObject
39
40- (int)respondsToSelector:(SEL)aSelector;
41
42@end
43
44__attribute__((objc_root_class))
45@interface NSObject <NSObject>
46
47@end
48
49@protocol OtherProto
50
51- (void)otherInstanceMethod; // expected-note {{method 'otherInstanceMethod' declared here}}
52
53@end
54
55@protocol MyProto <NSObject, OtherProto>
56@end
57
58void allowInstanceMethodsFromRootProtocols(Class<MyProto> c) {
59  [c respondsToSelector: @selector(instanceMethod)]; // no warning
60  [c otherInstanceMethod]; //  expected-warning {{instance method 'otherInstanceMethod' found instead of class method 'otherInstanceMethod'}}
61}
62