Test case for include-what-you-use issue #384: Build fails after Clang r289250

const_ptr.h

template<typename T> class I1_const_ptr {
 public:
  explicit I1_const_ptr(const T* ptr) : ptr_(ptr) { }
//  ~I1_const_ptr() { delete ptr_; }
  const T& operator*() { return *ptr_; }
  const T* operator->() { return ptr_; }
  int operator~() { return deref_a(); }
  void del() { delete (((ptr_))); }
  void indirect_del() { del(); }
  int deref_a() { return (*ptr_)->a(); }
 private:
  const T* ptr_;
};
// Try an out-of-line operator too, both regular-style and yoda-style.
template<typename T> bool operator==(I1_const_ptr<T>& ptr, const T& val) {
  return &*ptr == &val;
}
template<typename T> bool operator==(const T& val, I1_const_ptr<T>& ptr) {
  return &*ptr == &val;
}

i1_class.h

class I1_Class {};

use.cc

#include "const_ptr.h"
#include "i1_class.h"

class I1_Class;

void foo(I1_Class& i1_class) {
  I1_const_ptr<I1_Class> local_i1_const_ptr(0);
  (void)(local_i1_const_ptr == i1_class);

  (void)(i1_class == local_i1_const_ptr);
}

void bar(I1_Class* ptr) {
  (void)*ptr;
}