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// void reverse(); // constexpr since C++26
12
13#include <forward_list>
14#include <iterator>
15#include <algorithm>
16#include <cassert>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20
21template <class C>
22TEST_CONSTEXPR_CXX26 void test1(int N) {
23 C c;
24 for (int i = 0; i < N; ++i)
25 c.push_front(i);
26 c.reverse();
27 assert(std::distance(c.begin(), c.end()) == N);
28 typename C::const_iterator j = c.begin();
29 for (int i = 0; i < N; ++i, ++j)
30 assert(*j == i);
31}
32
33TEST_CONSTEXPR_CXX26 bool test() {
34 for (int i = 0; i < 10; ++i)
35 test1<std::forward_list<int> >(i);
36#if TEST_STD_VER >= 11
37 for (int i = 0; i < 10; ++i)
38 test1<std::forward_list<int, min_allocator<int>> >(i);
39#endif
40
41 return true;
42}
43
44int main(int, char**) {
45 assert(test());
46#if TEST_STD_VER >= 26
47 static_assert(test());
48#endif
49
50 return 0;
51}
52

source code of libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/reverse.pass.cpp