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// Test that a synthesized op= can override one from a base.

// { dg-do run }

struct B;

struct A

{

  virtual B& operator=(const B&);

};

struct B: A

{

  B(int i): i(i) { }

  int i;

  // implicitly-declared op=

};

B& A::operator=(const B& b) { return static_cast(*this); }

int main()

{

  B b1 (123);

  B b2 (0);

  A& ar = b1;

  ar = b2;

  return b1.i;

}