50 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: no-exceptions10// <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#include "test_macros.h"20 21static bool error_escape_thrown(const char *pat)22{23 bool result = false;24 try {25 std::regex re(pat);26 } catch (const std::regex_error &ex) {27 result = (ex.code() == std::regex_constants::error_escape);28 }29 return result;30}31 32int main(int, char**)33{34 assert(error_escape_thrown("[\\a]"));35 assert(error_escape_thrown("\\a"));36 assert(error_escape_thrown("\\"));37 38 assert(error_escape_thrown("[\\e]"));39 assert(error_escape_thrown("\\e"));40 41 assert(error_escape_thrown("[\\c:]"));42 assert(error_escape_thrown("\\c:"));43 assert(error_escape_thrown("\\c"));44 assert(!error_escape_thrown("[\\cA]"));45 assert(!error_escape_thrown("\\cA"));46 47 48 return 0;49}50