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// { dg-do assemble  }

// From: chw@bellcore.com (Charlie Woloszynski,MRE 2J-278,8295228,,27143)

// Newsgroups: gnu.g++.bug

// Subject: gcc-2.5.5 bug in multiple inheritance and pure virtual functions

// Date: 25 Jan 1994 23:41:36 -0500

// Bug: g++ fails to notice definitions of abstract virtuals.

class A

{

public:

  virtual void a1() = 0;

  virtual void a2() = 0;

};

class B

{

public:

  virtual void b1() = 0;

  virtual void b2() = 0;

};

class C: public A, public B

{

public:

  virtual void a2() {};

  virtual void b2() {};

};

class D : public C

{

public:

  virtual void a1() {};

  virtual void b1() {};

};

int main()

{

  D d;                          // { dg-bogus "" }

}