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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <regex>
// template <class charT> struct regex_traits;
// static std::size_t length(const char_type* p);
#include <regex>
#include <cassert>
int main()
{
assert(std::regex_traits<char>::length("") == 0);
assert(std::regex_traits<char>::length("1") == 1);
assert(std::regex_traits<char>::length("12") == 2);
assert(std::regex_traits<char>::length("123") == 3);
assert(std::regex_traits<wchar_t>::length(L"") == 0);
assert(std::regex_traits<wchar_t>::length(L"1") == 1);
assert(std::regex_traits<wchar_t>::length(L"12") == 2);
assert(std::regex_traits<wchar_t>::length(L"123") == 3);
}
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