libcxx/test/std/re/re.grammar/excessive_brace_count.pass.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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <regex>
  10 // UNSUPPORTED: no-exceptions
  11 // UNSUPPORTED: c++03
  12
  13 // the "n" in `a{n}` should be within the numeric limits.
  14
  15 #include <regex>
  16 #include <cassert>
  17 #include "test_macros.h"
  18
  19 int main(int, char**) {
  20   for (std::regex_constants::syntax_option_type op :
  21        {std::regex::basic, std::regex::grep}) {
  22     try {
  23       TEST_IGNORE_NODISCARD std::regex("a\\{100000000000000000\\}", op);
  24       assert(false);
  25     } catch (const std::regex_error &e) {
  26       assert(e.code() == std::regex_constants::error_badbrace);
  27     }
  28   }
  29   for (std::regex_constants::syntax_option_type op :
  30        {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
  31         std::regex::awk}) {
  32     try {
  33       TEST_IGNORE_NODISCARD std::regex("a{100000000000000000}", op);
  34       assert(false);
  35     } catch (const std::regex_error &e) {
  36       assert(e.code() == std::regex_constants::error_badbrace);
  37     }
  38   }
  39   return 0;
  40 }