| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | // <forward_list> |
| 10 | |
| 11 | // size_type max_size() const; // constexpr since C++26 |
| 12 | |
| 13 | #include <cassert> |
| 14 | #include <forward_list> |
| 15 | #include <limits> |
| 16 | #include <type_traits> |
| 17 | |
| 18 | #include "test_allocator.h" |
| 19 | #include "test_macros.h" |
| 20 | |
| 21 | TEST_CONSTEXPR_CXX26 bool test() { |
| 22 | { |
| 23 | typedef limited_allocator<int, 10> A; |
| 24 | typedef std::forward_list<int, A> C; |
| 25 | C c; |
| 26 | assert(c.max_size() <= 10); |
| 27 | LIBCPP_ASSERT(c.max_size() == 10); |
| 28 | } |
| 29 | { |
| 30 | typedef limited_allocator<int, (std::size_t)-1> A; |
| 31 | typedef std::forward_list<int, A> C; |
| 32 | const C::size_type max_dist = static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max()); |
| 33 | C c; |
| 34 | assert(c.max_size() <= max_dist); |
| 35 | LIBCPP_ASSERT(c.max_size() == max_dist); |
| 36 | } |
| 37 | { |
| 38 | typedef std::forward_list<char> C; |
| 39 | const C::size_type max_dist = static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max()); |
| 40 | C c; |
| 41 | assert(c.max_size() <= max_dist); |
| 42 | assert(c.max_size() <= alloc_max_size(c.get_allocator())); |
| 43 | } |
| 44 | |
| 45 | return true; |
| 46 | } |
| 47 | |
| 48 | int main(int, char**) { |
| 49 | assert(test()); |
| 50 | #if TEST_STD_VER >= 26 |
| 51 | static_assert(test()); |
| 52 | #endif |
| 53 | |
| 54 | return 0; |
| 55 | } |
| 56 |