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// { dg-do compile }

// Copyright (C) 2003 Free Software Foundation, Inc.

// Contributed by Nathan Sidwell 20 Apr 2003 

// PR 10337, unneeded warning

class A {

  public:

  A() {}

};

class B : public A {

  public:

  B() {}

  void operator=(const A& b) {}

  void operator=(const B& b) {}

};

class C {

  public:

  C() {}

  operator B &() { return _b; }

  operator const B &() const { return _b; }

  B _b;

};

int main() {

  B b;

  C c;

  b = c;

}