1 // 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 2 // rdar://8979379 3 4 @interface A 5 @end 6 7 @interface B : A 8 @end 9 10 void f(int (^bl)(B* b)); 11 void takeBlock(void (^block)()); 12 void useValues(...); 13 14 // Test1 15 void g() { 16 f(^(A* a) { return 0; }); 17 } 18 19 // Test2 20 void g1() { 21 int (^bl)(B* b) = ^(A* a) { return 0; }; 22 } 23 24 // Test3 25 @protocol NSObject; 26 27 void bar(id(^)(void)); 28 29 void foo(id <NSObject>(^objectCreationBlock)(void)) { 30 return bar(objectCreationBlock); 31 } 32 33 // Test4 34 struct S { 35 S *(^a)() = ^{ 36 return this; 37 }; 38 }; 39 S s; 40 41 // Test5 42 struct X { 43 void f() { 44 ^ { 45 struct Nested { Nested *ptr = this; }; 46 } (); 47 }; 48 }; 49 50 // Regression test for PR13314 51 class FooClass { }; 52 void fun() { 53 FooClass foovar; 54 ^() { // expected-warning {{expression result unused}} 55 return foovar; 56 }; 57 } 58 void gun() { 59 FooClass foovar; 60 [=]() { // expected-warning {{expression result unused}} 61 return foovar; 62 }; 63 } 64 65 // PR24780 66 class CaptureThisAndAnotherPointer { 67 void test(void *ptr) { 68 takeBlock(^{ useValues(ptr, this); }); 69 } 70 }; 71 72 // rdar://problem/23713871 73 // Check that we don't crash when using BLOCK_LAYOUT_STRONG. 74 #pragma clang assume_nonnull begin 75 @interface NSUUID @end 76 #pragma clang assume_nonnull end 77 78 struct Wrapper1 { NSUUID *Ref; }; 79 struct Wrapper2 { Wrapper1 W1; }; 80 81 @implementation B 82 - (void) captureStrongRef { 83 __block Wrapper2 W2; 84 } 85 @end 86
