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 // const_reverse_iterator crend() const; 12 13 #include <string> 14 #include <cassert> 15 16 #include "test_macros.h" 17 #include "min_allocator.h" 18 19 template <class S> 20 TEST_CONSTEXPR_CXX20 void 21 test(const S& s) 22 { 23 typename S::const_reverse_iterator ce = s.crend(); 24 assert(ce == s.rend()); 25 } 26 27 bool test() { 28 { 29 typedef std::string S; 30 test(S()); 31 test(S("123")); 32 } 33 #if TEST_STD_VER >= 11 34 { 35 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 36 test(S()); 37 test(S("123")); 38 } 39 #endif 40 41 return true; 42 } 43 44 int main(int, char**) 45 { 46 test(); 47 #if TEST_STD_VER > 17 48 // static_assert(test()); 49 #endif 50 51 return 0; 52 } 53