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//===----------------------------------------------------------------------===//
//
// 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
//=============================================================================
// TESTING unique_ptr(pointer, deleter)
//
// Concerns:
// 1 unique_ptr(pointer, deleter&&) only requires a MoveConstructible deleter.
// 2 unique_ptr(pointer, deleter&) requires a CopyConstructible deleter.
// 3 unique_ptr<T, D&>(pointer, deleter) does not require a CopyConstructible deleter.
// 4 unique_ptr<T, D const&>(pointer, deleter) does not require a CopyConstructible deleter.
// 5 unique_ptr(pointer, deleter) should work for derived pointers.
// 6 unique_ptr(pointer, deleter) should work with function pointers.
// 7 unique_ptr<void> should work.
#include <memory>
#include <cassert>
#include "test_macros.h"
#include "unique_ptr_test_helper.h"
bool my_free_called = false;
void my_free(void*) { my_free_called = true; }
#if TEST_STD_VER >= 11
struct DeleterBase {
void operator()(void*) const {}
};
struct CopyOnlyDeleter : DeleterBase {
CopyOnlyDeleter() = default;
CopyOnlyDeleter(CopyOnlyDeleter const&) = default;
CopyOnlyDeleter(CopyOnlyDeleter&&) = delete;
};
struct MoveOnlyDeleter : DeleterBase {
MoveOnlyDeleter() = default;
MoveOnlyDeleter(MoveOnlyDeleter&&) = default;
};
struct NoCopyMoveDeleter : DeleterBase {
NoCopyMoveDeleter() = default;
NoCopyMoveDeleter(NoCopyMoveDeleter const&) = delete;
};
#endif
template <bool IsArray>
void test_sfinae() {
#if TEST_STD_VER >= 11
typedef typename std::conditional<!IsArray, int, int[]>::type VT;
{
using D = CopyOnlyDeleter;
using U = std::unique_ptr<VT, D>;
static_assert(std::is_constructible<U, int*, D const&>::value, "");
static_assert(std::is_constructible<U, int*, D&>::value, "");
static_assert(std::is_constructible<U, int*, D&&>::value, "");
// FIXME: __libcpp_compressed_pair attempts to perform a move even though
// it should only copy.
//D d;
//U u(nullptr, std::move(d));
}
{
using D = MoveOnlyDeleter;
using U = std::unique_ptr<VT, D>;
static_assert(!std::is_constructible<U, int*, D const&>::value, "");
static_assert(!std::is_constructible<U, int*, D&>::value, "");
static_assert(std::is_constructible<U, int*, D&&>::value, "");
D d;
U u(nullptr, std::move(d));
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<VT, D>;
static_assert(!std::is_constructible<U, int*, D const&>::value, "");
static_assert(!std::is_constructible<U, int*, D&>::value, "");
static_assert(!std::is_constructible<U, int*, D&&>::value, "");
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<VT, D&>;
static_assert(!std::is_constructible<U, int*, D const&>::value, "");
static_assert(std::is_constructible<U, int*, D&>::value, "");
static_assert(!std::is_constructible<U, int*, D&&>::value, "");
static_assert(!std::is_constructible<U, int*, const D&&>::value, "");
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<VT, const D&>;
static_assert(std::is_constructible<U, int*, D const&>::value, "");
static_assert(std::is_constructible<U, int*, D&>::value, "");
static_assert(!std::is_constructible<U, int*, D&&>::value, "");
static_assert(!std::is_constructible<U, int*, const D&&>::value, "");
}
#endif
}
template <bool IsArray>
void test_noexcept() {
#if TEST_STD_VER >= 11
typedef typename std::conditional<!IsArray, int, int[]>::type VT;
{
using D = CopyOnlyDeleter;
using U = std::unique_ptr<VT, D>;
static_assert(std::is_nothrow_constructible<U, int*, D const&>::value, "");
static_assert(std::is_nothrow_constructible<U, int*, D&>::value, "");
static_assert(std::is_nothrow_constructible<U, int*, D&&>::value, "");
}
{
using D = MoveOnlyDeleter;
using U = std::unique_ptr<VT, D>;
static_assert(std::is_nothrow_constructible<U, int*, D&&>::value, "");
D d;
U u(nullptr, std::move(d));
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<VT, D&>;
static_assert(std::is_nothrow_constructible<U, int*, D&>::value, "");
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<VT, const D&>;
static_assert(std::is_nothrow_constructible<U, int*, D const&>::value, "");
static_assert(std::is_nothrow_constructible<U, int*, D&>::value, "");
}
#endif
}
void test_sfinae_runtime() {
#if TEST_STD_VER >= 11
{
using D = CopyOnlyDeleter;
using U = std::unique_ptr<A[], D>;
static_assert(std::is_nothrow_constructible<U, A*, D const&>::value, "");
static_assert(std::is_nothrow_constructible<U, A*, D&>::value, "");
static_assert(std::is_nothrow_constructible<U, A*, D&&>::value, "");
static_assert(!std::is_constructible<U, B*, D const&>::value, "");
static_assert(!std::is_constructible<U, B*, D&>::value, "");
static_assert(!std::is_constructible<U, B*, D&&>::value, "");
// FIXME: __libcpp_compressed_pair attempts to perform a move even though
// it should only copy.
//D d;
//U u(nullptr, std::move(d));
}
{
using D = MoveOnlyDeleter;
using U = std::unique_ptr<A[], D>;
static_assert(!std::is_constructible<U, A*, D const&>::value, "");
static_assert(!std::is_constructible<U, A*, D&>::value, "");
static_assert(std::is_nothrow_constructible<U, A*, D&&>::value, "");
static_assert(!std::is_constructible<U, B*, D const&>::value, "");
static_assert(!std::is_constructible<U, B*, D&>::value, "");
static_assert(!std::is_constructible<U, B*, D&&>::value, "");
D d;
U u(nullptr, std::move(d));
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<A[], D>;
static_assert(!std::is_constructible<U, A*, D const&>::value, "");
static_assert(!std::is_constructible<U, A*, D&>::value, "");
static_assert(!std::is_constructible<U, A*, D&&>::value, "");
static_assert(!std::is_constructible<U, B*, D const&>::value, "");
static_assert(!std::is_constructible<U, B*, D&>::value, "");
static_assert(!std::is_constructible<U, B*, D&&>::value, "");
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<A[], D&>;
static_assert(!std::is_constructible<U, A*, D const&>::value, "");
static_assert(std::is_nothrow_constructible<U, A*, D&>::value, "");
static_assert(!std::is_constructible<U, A*, D&&>::value, "");
static_assert(!std::is_constructible<U, A*, const D&&>::value, "");
static_assert(!std::is_constructible<U, B*, D const&>::value, "");
static_assert(!std::is_constructible<U, B*, D&>::value, "");
static_assert(!std::is_constructible<U, B*, D&&>::value, "");
static_assert(!std::is_constructible<U, B*, const D&&>::value, "");
}
{
using D = NoCopyMoveDeleter;
using U = std::unique_ptr<A[], const D&>;
static_assert(std::is_nothrow_constructible<U, A*, D const&>::value, "");
static_assert(std::is_nothrow_constructible<U, A*, D&>::value, "");
static_assert(!std::is_constructible<U, A*, D&&>::value, "");
static_assert(!std::is_constructible<U, A*, const D&&>::value, "");
static_assert(!std::is_constructible<U, B*, D const&>::value, "");
static_assert(!std::is_constructible<U, B*, D&>::value, "");
static_assert(!std::is_constructible<U, B*, D&&>::value, "");
static_assert(!std::is_constructible<U, B*, const D&&>::value, "");
}
#endif
}
template <bool IsArray>
void test_basic() {
typedef typename std::conditional<!IsArray, A, A[]>::type VT;
const int expect_alive = IsArray ? 5 : 1;
{ // MoveConstructible deleter (C-1)
A* p = newValue<VT>(expect_alive);
assert(A::count == expect_alive);
std::unique_ptr<VT, Deleter<VT> > s(p, Deleter<VT>(5));
assert(s.get() == p);
assert(s.get_deleter().state() == 5);
}
assert(A::count == 0);
{ // CopyConstructible deleter (C-2)
A* p = newValue<VT>(expect_alive);
assert(A::count == expect_alive);
CopyDeleter<VT> d(5);
std::unique_ptr<VT, CopyDeleter<VT> > s(p, d);
assert(s.get() == p);
assert(s.get_deleter().state() == 5);
d.set_state(6);
assert(s.get_deleter().state() == 5);
}
assert(A::count == 0);
{ // Reference deleter (C-3)
A* p = newValue<VT>(expect_alive);
assert(A::count == expect_alive);
NCDeleter<VT> d(5);
std::unique_ptr<VT, NCDeleter<VT>&> s(p, d);
assert(s.get() == p);
assert(&s.get_deleter() == &d);
assert(s.get_deleter().state() == 5);
d.set_state(6);
assert(s.get_deleter().state() == 6);
}
assert(A::count == 0);
{ // Const Reference deleter (C-4)
A* p = newValue<VT>(expect_alive);
assert(A::count == expect_alive);
NCConstDeleter<VT> d(5);
std::unique_ptr<VT, NCConstDeleter<VT> const&> s(p, d);
assert(s.get() == p);
assert(s.get_deleter().state() == 5);
assert(&s.get_deleter() == &d);
}
assert(A::count == 0);
{ // Void and function pointers (C-6,7)
typedef typename std::conditional<IsArray, int[], int>::type VT2;
my_free_called = false;
{
int i = 0;
std::unique_ptr<VT2, void (*)(void*)> s(&i, my_free);
assert(s.get() == &i);
assert(s.get_deleter() == my_free);
assert(!my_free_called);
}
assert(my_free_called);
}
}
void test_basic_single() {
assert(A::count == 0);
assert(B::count == 0);
{ // Derived pointers (C-5)
B* p = new B;
assert(A::count == 1);
assert(B::count == 1);
std::unique_ptr<A, Deleter<A> > s(p, Deleter<A>(5));
assert(s.get() == p);
assert(s.get_deleter().state() == 5);
}
assert(A::count == 0);
assert(B::count == 0);
{ // Void and function pointers (C-6,7)
my_free_called = false;
{
int i = 0;
std::unique_ptr<void, void (*)(void*)> s(&i, my_free);
assert(s.get() == &i);
assert(s.get_deleter() == my_free);
assert(!my_free_called);
}
assert(my_free_called);
}
}
template <bool IsArray>
void test_nullptr() {
#if TEST_STD_VER >= 11
typedef typename std::conditional<!IsArray, A, A[]>::type VT;
{
std::unique_ptr<VT, Deleter<VT> > u(nullptr, Deleter<VT>{});
assert(u.get() == nullptr);
}
{
NCDeleter<VT> d;
std::unique_ptr<VT, NCDeleter<VT>& > u(nullptr, d);
assert(u.get() == nullptr);
}
{
NCConstDeleter<VT> d;
std::unique_ptr<VT, NCConstDeleter<VT> const& > u(nullptr, d);
assert(u.get() == nullptr);
}
#endif
}
int main() {
{
test_basic</*IsArray*/ false>();
test_nullptr<false>();
test_basic_single();
test_sfinae<false>();
test_noexcept<false>();
}
{
test_basic</*IsArray*/ true>();
test_nullptr<true>();
test_sfinae<true>();
test_sfinae_runtime();
test_noexcept<true>();
}
}
|
