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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
//
//===----------------------------------------------------------------------===//
#include <__cxx03/__utility/is_valid_range.h>
#include <cassert>
#include "test_macros.h"
template <class T, class TQualified>
TEST_CONSTEXPR_CXX14 void check_type() {
{
// We need to ensure that the addresses of i and j are ordered as &i < &j for
// the test below to work portably, so we define them in a struct.
struct {
T i = 0;
T j = 0;
} storage;
assert(std::__is_valid_range(static_cast<TQualified*>(&storage.i), static_cast<TQualified*>(&storage.i)));
assert(std::__is_valid_range(static_cast<TQualified*>(&storage.i), static_cast<TQualified*>(&storage.i + 1)));
assert(!std::__is_valid_range(static_cast<TQualified*>(&storage.j), static_cast<TQualified*>(&storage.i)));
assert(!std::__is_valid_range(static_cast<TQualified*>(&storage.i + 1), static_cast<TQualified*>(&storage.i)));
// We detect this as being a valid range even though it is not really valid.
assert(std::__is_valid_range(static_cast<TQualified*>(&storage.i), static_cast<TQualified*>(&storage.j)));
}
{
T arr[3] = {1, 2, 3};
assert(std::__is_valid_range(static_cast<TQualified*>(&arr[0]), static_cast<TQualified*>(&arr[0])));
assert(std::__is_valid_range(static_cast<TQualified*>(&arr[0]), static_cast<TQualified*>(&arr[1])));
assert(std::__is_valid_range(static_cast<TQualified*>(&arr[0]), static_cast<TQualified*>(&arr[2])));
assert(!std::__is_valid_range(static_cast<TQualified*>(&arr[1]), static_cast<TQualified*>(&arr[0])));
assert(!std::__is_valid_range(static_cast<TQualified*>(&arr[2]), static_cast<TQualified*>(&arr[0])));
}
#if TEST_STD_VER >= 20
{
T* arr = new int[4]{1, 2, 3, 4};
assert(std::__is_valid_range(static_cast<TQualified*>(arr), static_cast<TQualified*>(arr + 4)));
delete[] arr;
}
#endif
}
TEST_CONSTEXPR_CXX14 bool test() {
check_type<int, int>();
check_type<int, int const>();
check_type<int, int volatile>();
check_type<int, int const volatile>();
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 14
static_assert(test(), "");
#endif
return 0;
}
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