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 // <string> 10 11 // reverse_iterator rend(); 12 // const_reverse_iterator rend() const; 13 14 #include <string> 15 #include <cassert> 16 #include <cstddef> 17 18 #include "test_macros.h" 19 #include "min_allocator.h" 20 21 template <class S> 22 void 23 test(S s) 24 { 25 const S& cs = s; 26 typename S::reverse_iterator e = s.rend(); 27 typename S::const_reverse_iterator ce = cs.rend(); 28 if (s.empty()) 29 { 30 assert(e == s.rbegin()); 31 assert(ce == cs.rbegin()); 32 } 33 assert(static_cast<std::size_t>(e - s.rbegin()) == s.size()); 34 assert(static_cast<std::size_t>(ce - cs.rbegin()) == cs.size()); 35 } 36 37 int main(int, char**) 38 { 39 { 40 typedef std::string S; 41 test(S()); 42 test(S("123")); 43 } 44 #if TEST_STD_VER >= 11 45 { 46 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 47 test(S()); 48 test(S("123")); 49 } 50 #endif 51 52 return 0; 53 } 54