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 // <iterator>
10 
11 // reverse_iterator
12 
13 // explicit reverse_iterator(Iter x); // constexpr since C++17
14 
15 #include <iterator>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 #include "test_iterators.h"
20 
21 template <class It>
test(It i)22 TEST_CONSTEXPR_CXX17 void test(It i) {
23     std::reverse_iterator<It> r(i);
24     assert(r.base() == i);
25 }
26 
tests()27 TEST_CONSTEXPR_CXX17 bool tests() {
28     const char s[] = "123";
29     test(bidirectional_iterator<const char*>(s));
30     test(random_access_iterator<const char*>(s));
31     test(s);
32     return true;
33 }
34 
main(int,char **)35 int main(int, char**) {
36     tests();
37 #if TEST_STD_VER > 14
38     static_assert(tests(), "");
39 #endif
40     return 0;
41 }
42