1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
// RUN: %clang_cc1 -S -o - -triple i686-windows -verify -fblocks \
// RUN: -Wno-unused-comparison %s
#pragma clang diagnostic ignored "-Wunused-comparison"
#define nil ((id)nullptr)
@protocol NSObject
@end
@protocol NSCopying
@end
@protocol OtherProtocol
@end
__attribute__((objc_root_class))
@interface NSObject <NSObject, NSCopying>
@end
__attribute__((objc_root_class))
@interface Test
@end
int main() {
void (^block)() = ^{};
NSObject *object;
id<NSObject, NSCopying> qualifiedId;
id<OtherProtocol> poorlyQualified1;
Test *objectOfWrongType;
block == nil;
block == object;
block == qualifiedId;
nil == block;
object == block;
qualifiedId == block;
// these are still not valid: blocks must be compared with id, NSObject*, or a protocol-qualified id
// conforming to NSCopying or NSObject.
block == poorlyQualified1; // expected-error {{invalid operands to binary expression ('void (^)()' and 'id<OtherProtocol>')}}
block == objectOfWrongType; // expected-error {{invalid operands to binary expression ('void (^)()' and 'Test *')}}
poorlyQualified1 == block; // expected-error {{invalid operands to binary expression ('id<OtherProtocol>' and 'void (^)()')}}
objectOfWrongType == block; // expected-error {{invalid operands to binary expression ('Test *' and 'void (^)()')}}
return 0;
}
|
