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// { dg-do assemble  }

// g++ 1.36.1 bug 900121_02

// Assignment of structs is defined as memberwise assignment,

// however g++ (1.36.2) and Cfront 2.0 differ on the definition

// of assignment for unions.

// (NOTE: Stroustrup now says that assignment of unions which contain either

// members or sub-members (base classes are not allowed for unions) which

// have non-default assignment operators defined for them will be illegal

// in future.)

// g++ (1.36.2) on the other hand, accepts this program without errors.

// keywords: unions, operator=, inheritance, members

struct s0 {

  int i;

  void operator= (s0 & arg)

  {

    this->i = arg.i;

  }

};

struct s1 {

  double d;

  void operator= (s1 & arg)

  {

    this->d = arg.d;

  }

};

union u0 {

  s0 u0_member_0;               // { dg-error "" }

  s1 u0_member_1;               // { dg-error "" }

};

void function ()

{

  u0 u0_object_0;

  u0 u0_object_1;

  u0_object_0 = u0_object_1;

}

int main () { return 0; }