llvm-project/clang/test/SemaObjCXX/blocks.mm

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// RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s
@protocol NSObject;
void bar(id(^)(void));
void foo(id <NSObject>(^objectCreationBlock)(void)) {
return bar(objectCreationBlock); // expected-warning{{incompatible pointer types converting 'id<NSObject> (^)()' to type 'id (^)()'}}
}
void bar2(id(*)(void));
void foo2(id <NSObject>(*objectCreationBlock)(void)) {
return bar2(objectCreationBlock); // expected-warning{{incompatible pointer types converting 'id<NSObject> (*)()' to type 'id (*)()'}}
}
void bar3(id(*)()); // expected-note{{candidate function}}
void foo3(id (*objectCreationBlock)(int)) {
return bar3(objectCreationBlock); // expected-error{{no matching}}
}
void bar4(id(^)()); // expected-note{{candidate function}}
void foo4(id (^objectCreationBlock)(int)) {
return bar4(objectCreationBlock); // expected-error{{no matching}}
}
void foo5(id (^x)(int)) {
if (x) { }
}
// <rdar://problem/6590445>
@interface Foo {
@private
void (^_block)(void);
}
- (void)bar;
@end
namespace N {
class X { };
void foo(X);
}
@implementation Foo
- (void)bar {
_block();
foo(N::X()); // okay
}
@end
typedef signed char BOOL;
void foo6(void *block) {
void (^vb)(id obj, int idx, BOOL *stop) = (void (^)(id, int, BOOL *))block;
BOOL (^bb)(id obj, int idx, BOOL *stop) = (BOOL (^)(id, int, BOOL *))block;
}