1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 //                     The LLVM Compiler Infrastructure
5 //
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
8 //
9 //===----------------------------------------------------------------------===//
10 
11 // <regex>
12 
13 // template <class charT> struct regex_traits;
14 
15 // static std::size_t length(const char_type* p);
16 
17 #include <regex>
18 #include <cassert>
19 
main()20 int main()
21 {
22     assert(std::regex_traits<char>::length("") == 0);
23     assert(std::regex_traits<char>::length("1") == 1);
24     assert(std::regex_traits<char>::length("12") == 2);
25     assert(std::regex_traits<char>::length("123") == 3);
26 
27     assert(std::regex_traits<wchar_t>::length(L"") == 0);
28     assert(std::regex_traits<wchar_t>::length(L"1") == 1);
29     assert(std::regex_traits<wchar_t>::length(L"12") == 2);
30     assert(std::regex_traits<wchar_t>::length(L"123") == 3);
31 }
32