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// UNSUPPORTED: c++03, c++11, c++14, c++17
10
11// constexpr counted_iterator() requires default_initializable<I> = default;
12
13#include <iterator>
14
15#include "test_macros.h"
16#include "test_iterators.h"
17
18constexpr bool test() {
19 static_assert(!std::default_initializable<std::counted_iterator<cpp17_input_iterator<int*>>>);
20 static_assert( std::default_initializable<std::counted_iterator<forward_iterator<int*>>>);
21
22 std::counted_iterator<forward_iterator<int*>> iter;
23 assert(iter.base() == forward_iterator<int*>());
24 assert(iter.count() == 0);
25
26 return true;
27}
28
29int main(int, char**) {
30 test();
31 static_assert(test());
32
33 return 0;
34}
35

source code of libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.default.pass.cpp