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// template <class charT, class traits = regex_traits<charT>> class basic_regex; 13 14// template <class ST, class SA> 15// basic_regex(const basic_string<charT, ST, SA>& s); 16 17#include <regex> 18#include <cassert> 19 20static bool error_escape_thrown(const char *pat) 21{ 22 bool result = false; 23 try { 24 std::regex re(pat); 25 } catch (std::regex_error &ex) { 26 result = (ex.code() == std::regex_constants::error_escape); 27 } 28 return result; 29} 30 31int main() 32{ 33 assert(error_escape_thrown("[\\a]")); 34 assert(error_escape_thrown("\\a")); 35 36 assert(error_escape_thrown("[\\e]")); 37 assert(error_escape_thrown("\\e")); 38 39 assert(error_escape_thrown("[\\c:]")); 40 assert(error_escape_thrown("\\c:")); 41 assert(error_escape_thrown("\\c")); 42 assert(!error_escape_thrown("[\\cA]")); 43 assert(!error_escape_thrown("\\cA")); 44 45} 46