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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
//
//===----------------------------------------------------------------------===//
// <memory>
// unique_ptr
// constexpr unique_ptr(nullptr_t); // constexpr since C++23
#include <memory>
#include <cassert>
#include "test_macros.h"
#include "unique_ptr_test_helper.h"
#if TEST_STD_VER >= 11
TEST_CONSTINIT std::unique_ptr<int> global_static_unique_ptr_single(nullptr);
TEST_CONSTINIT std::unique_ptr<int[]> global_static_unique_ptr_runtime(nullptr);
struct NonDefaultDeleter {
NonDefaultDeleter() = delete;
void operator()(void*) const {}
};
#endif
template <class VT>
TEST_CONSTEXPR_CXX23 void test_basic() {
#if TEST_STD_VER >= 11
{
using U1 = std::unique_ptr<VT>;
using U2 = std::unique_ptr<VT, Deleter<VT> >;
static_assert(std::is_nothrow_constructible<U1, decltype(nullptr)>::value, "");
static_assert(std::is_nothrow_constructible<U2, decltype(nullptr)>::value, "");
}
#endif
{
std::unique_ptr<VT> p(nullptr);
assert(p.get() == 0);
}
{
std::unique_ptr<VT, NCDeleter<VT> > p(nullptr);
assert(p.get() == 0);
assert(p.get_deleter().state() == 0);
}
{
std::unique_ptr<VT, DefaultCtorDeleter<VT> > p(nullptr);
assert(p.get() == 0);
assert(p.get_deleter().state() == 0);
}
}
template <class VT>
TEST_CONSTEXPR_CXX23 void test_sfinae() {
#if TEST_STD_VER >= 11
{ // the constructor does not participate in overload resolution when
// the deleter is a pointer type
using U = std::unique_ptr<VT, void (*)(void*)>;
static_assert(!std::is_constructible<U, decltype(nullptr)>::value, "");
}
{ // the constructor does not participate in overload resolution when
// the deleter is not default constructible
using Del = CDeleter<VT>;
using U1 = std::unique_ptr<VT, NonDefaultDeleter>;
using U2 = std::unique_ptr<VT, Del&>;
using U3 = std::unique_ptr<VT, Del const&>;
static_assert(!std::is_constructible<U1, decltype(nullptr)>::value, "");
static_assert(!std::is_constructible<U2, decltype(nullptr)>::value, "");
static_assert(!std::is_constructible<U3, decltype(nullptr)>::value, "");
}
#endif
}
DEFINE_AND_RUN_IS_INCOMPLETE_TEST({
{ doIncompleteTypeTest(0, nullptr); }
checkNumIncompleteTypeAlive(0);
{ doIncompleteTypeTest<IncompleteType, NCDeleter<IncompleteType> >(0, nullptr); }
checkNumIncompleteTypeAlive(0);
{ doIncompleteTypeTest<IncompleteType[]>(0, nullptr); }
checkNumIncompleteTypeAlive(0);
{ doIncompleteTypeTest<IncompleteType[], NCDeleter<IncompleteType[]> >(0, nullptr); }
checkNumIncompleteTypeAlive(0);
})
TEST_CONSTEXPR_CXX23 bool test() {
{
test_basic<int>();
test_sfinae<int>();
}
{
test_basic<int[]>();
test_sfinae<int[]>();
}
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 23
static_assert(test());
#endif
return 0;
}
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