text: // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -verify -fblocks %s
  // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -fobjc-arc %s
  // expected-no-diagnostics
  
  struct X {
    __unsafe_unretained id object;
    int (^ __unsafe_unretained block)(int, int);
  };
  
  void f(struct X x) {
    x.object = 0;
    x.block = ^(int x, int y) { return x + y; };
  }
  