1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <iterator> 11 12// move_iterator 13 14// requires RandomAccessIterator<Iter> 15// move_iterator operator+(difference_type n) const; 16// 17// constexpr in C++17 18 19#include <iterator> 20#include <cassert> 21 22#include "test_macros.h" 23#include "test_iterators.h" 24 25template <class It> 26void 27test(It i, typename std::iterator_traits<It>::difference_type n, It x) 28{ 29 const std::move_iterator<It> r(i); 30 std::move_iterator<It> rr = r + n; 31 assert(rr.base() == x); 32} 33 34int main() 35{ 36 const char* s = "1234567890"; 37 test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10)); 38 test(s+5, 5, s+10); 39 40#if TEST_STD_VER > 14 41 { 42 constexpr const char *p = "123456789"; 43 typedef std::move_iterator<const char *> MI; 44 constexpr MI it1 = std::make_move_iterator(p); 45 constexpr MI it2 = std::make_move_iterator(p + 5); 46 constexpr MI it3 = it1 + 5; 47 static_assert(it1 != it2, ""); 48 static_assert(it1 != it3, ""); 49 static_assert(it2 == it3, ""); 50 } 51#endif 52} 53