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// PR5645: gcc warns that pure virtual class not explicitly initialized.

// { dg-do compile }

// { dg-options "-Wall -Wextra" }

class a {

public:

  virtual int f() = 0;

  virtual int g() = 0;

};

class b : public a {

public:

  b();

  b(const b& c);

protected:

  int i;

};

b::b() {}

b::b(const b& c) { // { dg-bogus "base class .class a. should be explicitly initialized in the copy constructor" }

  i = c.i;

}

struct X {};

struct Y : X

{

  Y (Y const&) {}

};