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// { dg-do run  }

// Copyright (C) 1999 Free Software Foundation

// by Alexandre Oliva 

// based on bug report by Fredrik Öhrström 

#include 

using namespace std;

struct vbase {

  virtual int get_a() const = 0;

};

struct base: virtual vbase {

  int a;

  base(int aa) : a(aa) {}

  int get_a() const { return a; }

};

struct mid: base {

  mid(int bb) : base(bb) {

    // when mid is not in charge of vbase initialization,

    // a derived-aware vtable is needed for vbase

    if (((vbase*)this)->get_a() != bb)

      abort();

  }

};

struct derived: virtual mid {

  derived(int cc) : mid(cc) {}

};

int main () {

  derived(1);

}