clang/test/CodeGenCXX/reference-in-blocks.cpp

   1 // RUN: %clang_cc1 -fblocks %s -emit-llvm -o %t
   2
   3 extern "C" int printf(const char*, ...);
   4
   5 template<typename T> class range {
   6 public:
   7 T _i;
   8         range(T i) {_i = i;};
   9         T get() {return _i;};
  10 };
  11
  12 class A {
  13     public:
  14         A() : field(10), d1(3.14) {}
  15         void F();
  16         void S() {
  17           printf(" field = %d\n", field);
  18           printf(" field = %f\n", d1);
  19         }
  20         int field;
  21         double d1;
  22 };
  23
  24 void A::F()
  25     {
  26         __block A &tlc = *this;
  27         // crashed in code gen
  28         ^{ tlc.S(); }();
  29     }
  30
  31 int main() {
  32
  33         // works
  34         void (^bl)(range<int> ) = ^(range<int> i){printf("Hello Blocks %d\n", i.get()); };
  35
  36         //crashes in godegen?
  37         void (^bl2)(range<int>& ) = ^(range<int>& i){printf("Hello Blocks %d\n", i.get()); };
  38
  39         A *a = new A;
  40         a->F();
  41         return 0;
  42 }