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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <array>
// implicitly generated array constructors / assignment operators
#include <array>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
// std::array is explicitly allowed to be initialized with A a = { init-list };.
// Disable the missing braces warning for this reason.
#include "disable_missing_braces_warning.h"
// In C++03 the copy assignment operator is not deleted when the implicitly
// generated operator would be ill-formed; like in the case of a struct with a
// const member.
#if TEST_STD_VER < 11
#define TEST_NOT_COPY_ASSIGNABLE(T) ((void)0)
#else
#define TEST_NOT_COPY_ASSIGNABLE(T) static_assert(!std::is_copy_assignable<T>::value, "")
#endif
struct NoDefault {
NoDefault(int) {}
};
int main(int, char**) {
{
typedef double T;
typedef std::array<T, 3> C;
C c = {1.1, 2.2, 3.3};
C c2 = c;
c2 = c;
static_assert(std::is_copy_constructible<C>::value, "");
static_assert(std::is_copy_assignable<C>::value, "");
}
{
typedef double T;
typedef std::array<const T, 3> C;
C c = {1.1, 2.2, 3.3};
C c2 = c;
((void)c2);
static_assert(std::is_copy_constructible<C>::value, "");
TEST_NOT_COPY_ASSIGNABLE(C);
}
{
typedef double T;
typedef std::array<T, 0> C;
C c = {};
C c2 = c;
c2 = c;
static_assert(std::is_copy_constructible<C>::value, "");
static_assert(std::is_copy_assignable<C>::value, "");
}
{
// const arrays of size 0 should disable the implicit copy assignment operator.
typedef double T;
typedef std::array<const T, 0> C;
C c = {{}};
C c2 = c;
((void)c2);
static_assert(std::is_copy_constructible<C>::value, "");
TEST_NOT_COPY_ASSIGNABLE(C);
}
{
typedef NoDefault T;
typedef std::array<T, 0> C;
C c = {};
C c2 = c;
c2 = c;
static_assert(std::is_copy_constructible<C>::value, "");
static_assert(std::is_copy_assignable<C>::value, "");
}
{
typedef NoDefault T;
typedef std::array<const T, 0> C;
C c = {{}};
C c2 = c;
((void)c2);
static_assert(std::is_copy_constructible<C>::value, "");
TEST_NOT_COPY_ASSIGNABLE(C);
}
return 0;
}
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