ceph/src/boost/libs/regex/test/pathology/recursion_test.cpp

   1 /*
   2  *
   3  * Copyright (c) 1998-2002
   4  * John Maddock
   5  *
   6  * Use, modification and distribution are subject to the
   7  * Boost Software License, Version 1.0. (See accompanying file
   8  * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9  *
  10  */
  11
  12  /*
  13   *   LOCATION:    see http://www.boost.org for most recent version.
  14   *   FILE:        recursion_test.cpp
  15   *   VERSION:     see <boost/version.hpp>
  16   *   DESCRIPTION: Test for indefinite recursion and/or stack overrun.
  17   */
  18
  19 #include <string>
  20 #include <boost/regex.hpp>
  21 #include <boost/detail/lightweight_main.hpp>
  22 #include "../test_macros.hpp"
  23
  24 #ifdef BOOST_INTEL
  25 #pragma warning(disable:1418 981 983 383)
  26 #endif
  27
  28 int cpp_main( int , char* [] )
  29 {
  30    // this regex will recurse twice for each whitespace character matched:
  31    boost::regex e("([[:space:]]|.)+");
  32
  33    std::string bad_text(1024*1024*4, ' ');
  34    std::string good_text(200, ' ');
  35
  36    boost::smatch what;
  37
  38    //
  39    // Over and over: We want to make sure that after a stack error has
  40    // been triggered, that we can still conduct a good search and that
  41    // subsequent stack failures still do the right thing:
  42    //
  43    BOOST_CHECK(boost::regex_search(good_text, what, e));
  44    BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
  45    BOOST_CHECK(boost::regex_search(good_text, what, e));
  46    BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
  47    BOOST_CHECK(boost::regex_search(good_text, what, e));
  48    BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
  49    BOOST_CHECK(boost::regex_search(good_text, what, e));
  50    BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
  51    BOOST_CHECK(boost::regex_search(good_text, what, e));
  52
  53    BOOST_CHECK(boost::regex_match(good_text, what, e));
  54    BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
  55    BOOST_CHECK(boost::regex_match(good_text, what, e));
  56    BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
  57    BOOST_CHECK(boost::regex_match(good_text, what, e));
  58    BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
  59    BOOST_CHECK(boost::regex_match(good_text, what, e));
  60    BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
  61    BOOST_CHECK(boost::regex_match(good_text, what, e));
  62
  63    return 0;
  64 }
  65