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// { dg-do assemble  }

// GROUPS passed conversions

// cvt file

// Message-Id: <1992Jul31.142856.10082@ericsson.se>

// From: jonas@ericsson.se (Jonas Nygren)

// Subject: g++ bug

// Date: Fri, 31 Jul 1992 14:28:56 GMT

class A {};

class B : public A {};

B b;

class R{

public:

  R() {}

  operator B&() { return b; }

};

void f(A&) {}

int main(){

  R r;

  f(r); // problem to cast to B& and then to A&

}