Subversion Repositories openrisc

// { dg-do run  }

// Copyright (C) 1999 Free Software Foundation, Inc.

// Contributed by Nathan Sidwell 20 May 1999 

// Although anon unions cannot have user defined member functions

// [class.union/2].  They should have implicitly defined copy ctors and

// and the like [class.copy/4].  Make sure we generate one of the correct

// signature and that it works ok.

extern "C" void abort();

struct A

{

  union

  {

    int a;

  };

};

union B

{

  int a;

};

static A Ctor(A const &src)

{

  A result(src);  // this should not cause a const violation

  result = src;   // and neither should this

  return result;

}

typedef __SIZE_TYPE__ size_t;

void *operator new(size_t, void *ptr)

{

  return ptr;

}

// check copy ctor and assignment for plain union

void check_union()

{

  B b1;

  B b2;

  b1.a = 5;

  b2.a = 6;

  b2 = b1;

  if(b2.a != 5)

    abort();

  b2.a = 6;

  new (&b2) B(b1);

  if(b2.a != 5)

    abort();

  return;

}

// check copy ctor and assignment for class containing anon-union

void check_union_member()

{

  A a1;

  A a2;

  a1.a = 5;

  a2.a = 6;

  a2 = a1;

  if(a2.a != 5)

    abort();

  a2.a = 6;

  new (&a2) A(a1);

  if(a2.a != 5)

    abort();

  return;

}

int main()

{

  check_union();

  check_union_member();

  return 0;

}