clang/test/CodeGenCXX/cxx-block-objects.cpp

   1 // RUN: %clang_cc1 %s -fblocks -triple x86_64-apple-darwin -emit-llvm -o - | FileCheck %s
   2
   3 extern "C" {
   4 extern "C" void *_Block_copy(const void *aBlock);
   5 extern "C" void _Block_release(const void *aBlock);
   6 }
   7
   8 class A {
   9 public:
  10         int x;
  11         A(const A &o);
  12         A();
  13         virtual ~A();
  14         void hello() const;
  15 };
  16
  17 int
  18 main()
  19 {
  20         A a;
  21         void (^c)(void) = ((__typeof(^{ a.hello(); }))_Block_copy((const void *)(^{ a.hello(); })));
  22         c();
  23         _Block_release((const void *)(c));
  24         return 0;
  25 }
  26
  27 // CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_
  28 // CHECK: call void @_ZN1AC1ERKS_
  29
  30
  31 // CHECK-LABEL:define linkonce_odr hidden void @__destroy_helper_block_
  32 // CHECK: call void @_ZN1AD1Ev