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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
//=============================================================================
// TESTING std::unique_ptr::unique_ptr()
//
// Concerns:
// 1 The default constructor works for any default constructible deleter types.
// 2 The stored type 'T' is allowed to be incomplete.
//
// Plan
// 1 Default construct unique_ptr's with various deleter types (C-1)
// 2 Default construct a unique_ptr with an incomplete element_type and
// various deleter types (C-1,2)
#include <memory>
#include <cassert>
#include "test_macros.h"
#include "test_macros.h"
#include "deleter_types.h"
#include "unique_ptr_test_helper.h"
#if defined(_LIBCPP_VERSION) && TEST_STD_VER >= 11
_LIBCPP_SAFE_STATIC std::unique_ptr<int> global_static_unique_ptr_single;
_LIBCPP_SAFE_STATIC std::unique_ptr<int[]> global_static_unique_ptr_runtime;
#endif
#if TEST_STD_VER >= 11
struct NonDefaultDeleter {
NonDefaultDeleter() = delete;
void operator()(void*) const {}
};
#endif
template <class ElemType>
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<ElemType, void (*)(void*)>;
static_assert(!std::is_default_constructible<U>::value, "");
}
{ // the constructor does not participate in overload resolution when
// the deleter is not default constructible
using Del = CDeleter<ElemType>;
using U1 = std::unique_ptr<ElemType, NonDefaultDeleter>;
using U2 = std::unique_ptr<ElemType, Del&>;
using U3 = std::unique_ptr<ElemType, Del const&>;
static_assert(!std::is_default_constructible<U1>::value, "");
static_assert(!std::is_default_constructible<U2>::value, "");
static_assert(!std::is_default_constructible<U3>::value, "");
}
#endif
}
template <class ElemType>
void test_basic() {
#if TEST_STD_VER >= 11
{
using U1 = std::unique_ptr<ElemType>;
using U2 = std::unique_ptr<ElemType, Deleter<ElemType> >;
static_assert(std::is_nothrow_default_constructible<U1>::value, "");
static_assert(std::is_nothrow_default_constructible<U2>::value, "");
}
#endif
{
std::unique_ptr<ElemType> p;
assert(p.get() == 0);
}
{
std::unique_ptr<ElemType, NCDeleter<ElemType> > p;
assert(p.get() == 0);
assert(p.get_deleter().state() == 0);
p.get_deleter().set_state(5);
assert(p.get_deleter().state() == 5);
}
}
DEFINE_AND_RUN_IS_INCOMPLETE_TEST({
doIncompleteTypeTest(0);
doIncompleteTypeTest<IncompleteType, Deleter<IncompleteType> >(0);
} {
doIncompleteTypeTest<IncompleteType[]>(0);
doIncompleteTypeTest<IncompleteType[], Deleter<IncompleteType[]> >(0);
})
int main(int, char**) {
{
test_sfinae<int>();
test_basic<int>();
}
{
test_sfinae<int[]>();
test_basic<int[]>();
}
return 0;
}
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