text: // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm %s -o - | \
  // RUN: FileCheck %s
  // RUN: %clang_cc1 -triple i386-apple-darwin -std=c++11 -emit-llvm %s -o - | \
  // RUN: FileCheck %s
  
  extern "C" int printf(...);
  
  struct B {
    B() : B1(3.14), B2(3.15), auB2(3.16)  {} 
    float B1;
    float B2;
    void pr() {
      printf("B1 = %f B2 = %f auB1 = %f\n", B1, B2, auB1);
    }
  
    B& operator=(const B& arg) { B1 = arg.B1; B2 = arg.B2; 
                                 auB1 = arg.auB1; return *this; }
    union {
      float auB1;
      float auB2;
    };
  };
  
  struct M {
    M() : M1(10), M2(11) , auM1(12) {} 
    int M1;
    int M2;
    void pr() {
      printf("M1 = %d M2 = %d auM1 = %d auM2 = %d\n", M1, M2, auM1, auM2);
    }
    union {
      int auM1;
      int auM2;
    };
  };
  
  struct N  : B {
    N() : N1(20), N2(21) {} 
    int N1;
    int N2;
    void pr() {
      printf("N1 = %d N2 = %d\n", N1, N2);
      for (unsigned i = 0; i < 3; i++)
        for (unsigned j = 0; j < 2; j++)
          printf("arr_b[%d][%d] = %f\n", i,j,arr_b[i][j].B1);
      B::pr();
    }
    N& operator=(const N& arg) {
      N1 = arg.N1; N2 = arg.N2; 
      for (unsigned i = 0; i < 3; i++)
        for (unsigned j = 0; j < 2; j++)
          arr_b[i][j] = arg.arr_b[i][j];
      return *this;
    }
    B arr_b[3][2];
  };
  
  struct Q  : B {
    Q() : Q1(30), Q2(31) {} 
    int Q1;
    int Q2;
    void pr() {
      printf("Q1 = %d Q2 = %d\n", Q1, Q2);
    }
  };
  
  
  struct X : M , N { 
    X() : d(0.0), d1(1.1), d2(1.2), d3(1.3) {}
    double d;
    double d1;
    double d2;
    double d3;
    void pr() {
      printf("d = %f d1 = %f d2 = %f d3 = %f\n", d, d1,d2,d3);
      M::pr(); N::pr();
      q1.pr(); q2.pr();
    }
  
   Q q1, q2;
  }; 
  
  
  X srcX; 
  X dstX; 
  X dstY; 
  
  int main() {
    dstY = dstX = srcX;
    srcX.pr();
    dstX.pr();
    dstY.pr();
  }
  
  // CHECK: define linkonce_odr noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %struct.X* @_ZN1XaSERKS_
  