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 #include <iterator>
12 
13 #include "test_macros.h"
14 
15 struct Incomplete;
16 template<class T> struct Holder { T t; };
17 
18 template<class>
19 struct Intable {
operator intIntable20     operator int() const { return 1; }
21 };
22 
main(int,char **)23 int main(int, char**) {
24     Holder<Incomplete> *a[2] = {};
25     Holder<Incomplete> **p = a;
26 #if TEST_STD_VER >= 17
27     p = std::next(p);
28     p = std::prev(p);
29     p = std::next(p, 2);
30     p = std::prev(p, 2);
31 #endif
32     std::advance(p, Intable<Holder<Incomplete> >());
33     (void)std::distance(p, p);
34 
35     return 0;
36 }
37