make_shared.fail.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>

// shared_ptr

// template<class T, class... Args> shared_ptr<T> make_shared(Args&&... args);

#include <memory>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

struct S {
protected:
   S () {};  // ctor is protected
private:
    S(int) {}
};
static_assert(std::is_empty<S>::value, "S needs to be empty for these test cases");

int main()
{
  std::shared_ptr<S> p;
  // expected-error@memory:* 2 {{static_assert failed "Can't construct object in make_shared}}
  {
    // test that construction via a protected constructor is not accepted.
    // NOTE: We may accidentally use a protected constructor while performing the EBO.
    p = std::make_shared<S>(); // expected-note {{here}}
  }
  {
    // test that construction via a private constructor is not accepted.
    // expected-error@memory:* 1 {{base class 'S' has private constructor}}
    p = std::make_shared<S>(42); // expected-note {{here}}
  }
}