1// RUN: %clang_cc1 -Wmethod-signatures -fsyntax-only -verify -Wno-objc-root-class %s
2// RUN: %clang_cc1 -x objective-c++ -Wmethod-signatures -fsyntax-only -verify -Wno-objc-root-class %s
3
4@interface A @end
5@interface B : A @end
6
7@interface Test1 {}
8- (void) test1:(A*) object; // expected-note {{previous definition is here}}
9- (void) test2:(B*) object;
10@end
11
12@implementation Test1
13- (void) test1:(B*) object {} // expected-warning {{conflicting parameter types in implementation of 'test1:': 'A *' vs 'B *'}}
14- (void) test2:(A*) object {}
15@end
16
17@interface Test2 {}
18- (void) test1:(id) object; // expected-note {{previous definition is here}}
19- (void) test2:(A*) object;
20@end
21
22@implementation Test2
23- (void) test1:(A*) object {} // expected-warning {{conflicting parameter types in implementation of 'test1:': 'id' vs 'A *'}}
24- (void) test2:(id) object {}
25@end
26
27@interface Test3 {}
28- (A*) test1;
29- (B*) test2; // expected-note {{previous definition is here}}
30@end
31
32@implementation Test3
33- (B*) test1 { return 0; }
34- (A*) test2 { return 0; } // expected-warning {{conflicting return type in implementation of 'test2': 'B *' vs 'A *'}}
35@end
36
37// The particular case of overriding with an id return is white-listed.
38@interface Test4 {}
39- (id) test1;
40- (A*) test2;
41@end
42@implementation Test4
43- (A*) test1 { return 0; } // id -> A* is rdar://problem/8596987
44- (id) test2 { return 0; }
45@end
46
47// rdar://12522752
48typedef int int32_t;
49typedef long long int64_t;
50
51@interface NSObject @end
52
53@protocol CKMessage
54@property (nonatomic,readonly,assign) int64_t sequenceNumber; // expected-note {{previous definition is here}}
55@end
56
57@protocol CKMessage;
58
59@interface CKIMMessage : NSObject<CKMessage>
60@end
61
62@implementation CKIMMessage
63- (int32_t)sequenceNumber { // expected-warning {{conflicting return type in implementation of 'sequenceNumber': 'int64_t' (aka 'long long') vs 'int32_t' (aka 'int')}}
64  return 0;
65}
66@end
67
68// rdar://14650159
69// Tests that property inherited indirectly from a nested protocol
70// is seen by the method implementation type matching logic before
71// method in super class is seen. This fixes the warning coming
72// out of that method mismatch.
73@interface NSObject (NSDict)
74- (void)setValue:(id)value;
75- (id)value;
76@end
77
78@protocol ProtocolWithValue
79@property (nonatomic) unsigned value;
80@end
81
82@protocol InterveningProtocol <ProtocolWithValue>
83@end
84
85@interface UsesProtocolWithValue : NSObject <ProtocolWithValue>
86@end
87
88@implementation UsesProtocolWithValue
89@synthesize value=_value;
90- (unsigned) value
91{
92	return _value;
93}
94- (void) setValue:(unsigned)value
95{
96	_value = value;
97}
98@end
99
100
101@interface UsesInterveningProtocol : NSObject <InterveningProtocol>
102@end
103
104@implementation UsesInterveningProtocol
105
106@synthesize value=_value;
107- (unsigned) value
108{
109	return _value;
110}
111- (void) setValue:(unsigned)value
112{
113	_value = value;
114}
115@end
116