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 // <regex> 11 12 // class match_results<BidirectionalIterator, Allocator> 13 14 // difference_type length(size_type sub = 0) const; 15 16 #include <regex> 17 #include <cassert> 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()33int main() 34 { 35 test(); 36 } 37