language: C++ 4.7.2 (gcc-4.7.2)
date: 221 days 23 hours ago
link:
visibility: public 
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class A {
 public:
  class B {public: bool value;};
 
  A() {}
  B b_;
 protected:
  void DoStuff(B& b) { return DoStuffImpl(b); }
 private:
  virtual void DoStuffImpl(B& b) = 0;
};
 
class X : public A {
 public:
  X() {}
  void Trigger();
 private:
  virtual void DoStuffImpl(B& b);
};
 
void X::Trigger() {
    DoStuff(b_);
}
void X::DoStuffImpl(B& b) {
    b.value = true;
}
 
int main(){
    X x;
    x.Trigger();
    return x.b_.value;
}