test/std/utilities/memory/unique.ptr/unique.ptr.runtime/unique.ptr.runtime.ctor/default.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <memory>

// unique_ptr

// Test unique_ptr default ctor

// default unique_ptr ctor should only require default Deleter ctor

#include <memory>
#include <cassert>
#include "test_macros.h"

#if defined(_LIBCPP_VERSION) && TEST_STD_VER >= 11
_LIBCPP_SAFE_STATIC std::unique_ptr<int[]> global_static_unique_ptr;
#endif

class Deleter {
  int state_;

  Deleter(Deleter&);
  Deleter& operator=(Deleter&);

public:
  Deleter() : state_(5) {}

  int state() const { return state_; }

  void operator()(void*) {}
};

int main() {
  {
    std::unique_ptr<int[]> p;
    assert(p.get() == 0);
  }
  {
    std::unique_ptr<int[], Deleter> p;
    assert(p.get() == 0);
    assert(p.get_deleter().state() == 5);
  }
}