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 // <regex> 10 11 // class match_results<BidirectionalIterator, Allocator> 12 13 // difference_type length(size_type sub = 0) const; 14 15 #include <regex> 16 #include <cassert> 17 #include "test_macros.h" 18 19 void test()20test() 21 { 22 std::match_results<const char*> m; 23 const char s[] = "abcdefghijk"; 24 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi"))); 25 assert(m.length() == m[0].length()); 26 assert(m.length(0) == m[0].length()); 27 assert(m.length(1) == m[1].length()); 28 assert(m.length(2) == m[2].length()); 29 assert(m.length(3) == m[3].length()); 30 assert(m.length(4) == m[4].length()); 31 } 32 main(int,char **)33int main(int, char**) 34 { 35 test(); 36 37 return 0; 38 } 39