cxx/test/utilities/meta/meta.unary/meta.unary.prop/is_trivialially_copyable.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.
//
//===----------------------------------------------------------------------===//

// type_traits

// is_trivially_copyable

#include <type_traits>
#include <cassert>

template <class T>
void test_is_trivially_copyable()
{
    static_assert( std::is_trivially_copyable<T>::value, "");
    static_assert( std::is_trivially_copyable<const T>::value, "");
    static_assert( std::is_trivially_copyable<volatile T>::value, "");
    static_assert( std::is_trivially_copyable<const volatile T>::value, "");
}

template <class T>
void test_is_not_trivially_copyable()
{
    static_assert(!std::is_trivially_copyable<T>::value, "");
    static_assert(!std::is_trivially_copyable<const T>::value, "");
    static_assert(!std::is_trivially_copyable<volatile T>::value, "");
    static_assert(!std::is_trivially_copyable<const volatile T>::value, "");
}

struct A
{
    int i_;
};

struct B
{
    int i_;
    ~B() {assert(i_ == 0);}
};

class C
{
public:
    C();
};

int main()
{
    test_is_trivially_copyable<int> ();
    test_is_trivially_copyable<const int> ();
    test_is_trivially_copyable<A> ();
    test_is_trivially_copyable<const A> ();
    test_is_trivially_copyable<C> ();

    test_is_not_trivially_copyable<int&> ();
    test_is_not_trivially_copyable<const A&> ();
    test_is_not_trivially_copyable<B> ();
}