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// RUN: %clang_cc1 -x objective-c++ -fblocks -triple x86_64-apple-darwin -fobjc-runtime=macosx-fragile-10.5 %s -verify -std=c++11 -emit-llvm -o %t
// rdar://8979379
@interface A
@end
@interface B : A
@end
void f(int (^bl)(B* b));
void takeBlock(void (^block)());
void useValues(...);
// Test1
void g() {
f(^(A* a) { return 0; });
}
// Test2
void g1() {
int (^bl)(B* b) = ^(A* a) { return 0; };
}
// Test3
@protocol NSObject;
void bar(id(^)(void));
void foo(id <NSObject>(^objectCreationBlock)(void)) {
return bar(objectCreationBlock);
}
// Test4
struct S {
S *(^a)() = ^{
return this;
};
};
S s;
// Test5
struct X {
void f() {
^ {
struct Nested { Nested *ptr = this; };
} ();
};
};
// Regression test for PR13314
class FooClass { };
void fun() {
FooClass foovar;
^() { // expected-warning {{expression result unused}}
return foovar;
};
}
void gun() {
FooClass foovar;
[=]() { // expected-warning {{expression result unused}}
return foovar;
};
}
// PR24780
class CaptureThisAndAnotherPointer {
void test(void *ptr) {
takeBlock(^{ useValues(ptr, this); });
}
};
// rdar://problem/23713871
// Check that we don't crash when using BLOCK_LAYOUT_STRONG.
#pragma clang assume_nonnull begin
@interface NSUUID @end
#pragma clang assume_nonnull end
struct Wrapper1 { NSUUID *Ref; };
struct Wrapper2 { Wrapper1 W1; };
@implementation B
- (void) captureStrongRef {
__block Wrapper2 W2;
}
@end
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