// { dg-do run  }extern "C" void abort ();struct A {  union {    int a;    double b;    int d;  };  int c;};struct B : public A {  union {    double a;    void *c;  };  float b;  int e;};int main (){  struct B b;  b.a = 1.5;  b.b = 2.5;  b.d = 1;  b.e = 2;  if (b.a != 1.5 || b.b != 2.5 || b.d != 1 || b.e != 2)    abort ();  b.c = &b.a;  b.d = b.e;  if (b.c != &b.a || b.d != 2)    abort ();  return 0;}