hi, i'm using boost regex in a multithreaded environment with os: fedora 7 boost version: 1.33.1 g++: 4.1.2 i've attached a small sample program that crashes often; but not always (once in 4-5 runs) curiously, the same program runs without any issue on fedora 8, boost 1.34.1. is there any issue using boost-regex 1.33.1 in multi-threaded environment? stack trace: #0 0x00a22402 in __kernel_vsyscall () #1 0x00b921c0 in raise () from /lib/i686/nosegneg/libc.so.6 #2 0x00b93ba1 in abort () from /lib/i686/nosegneg/libc.so.6 #3 0x07fa9540 in __gnu_cxx::__verbose_terminate_handler () from /usr/lib/libstdc++.so.6 #4 0x07fa7025 in ?? () from /usr/lib/libstdc++.so.6 #5 0x07fa7062 in std::terminate () from /usr/lib/libstdc++.so.6 #6 0x07fa719a in __cxa_throw () from /usr/lib/libstdc++.so.6 #7 0x00235adb in boost::regex_error::raise () from /usr/lib/libboost_regex.so.2 #8 0x00205f1f in boost::re_detail::basic_regex_parser<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::fail () from /usr/lib/libboost_regex.so.2 #9 0x0020771f in boost::re_detail::basic_regex_parser<char, boost::regex_traits<char, boost::cpp_regex_traits<char> >
::parse_repeat_range () from /usr/lib/libboost_regex.so.2 #10 0x00218c7e in boost::re_detail::basic_regex_parser<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::parse_extended () from /usr/lib/libboost_regex.so.2 #11 0x002087db in boost::re_detail::basic_regex_parser<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > ::parse_open_paren () from /usr/lib/libboost_regex.so.2 #12 0x00218bd6 in boost::re_detail::basic_regex_parser<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::parse_extended () from /usr/lib/libboost_regex.so.2 #13 0x002334e4 in boost::re_detail::basic_regex_parser<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::parse () from /usr/lib/libboost_regex.so.2 #14 0x002349c1 in boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign () from /usr/lib/libboost_regex.so.2 #15 0x0804babc in boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign () #16 0x0804bb06 in boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign<std::char_traits<char>, std::allocator<char> > () #17 0x0804bb42 in boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::basic_regex<std::char_traits<char>, std::allocator<char> > () #18 0x0804a2b5 in work () #19 0x0804a4e7 in thread_func () #20 0x00d0f472 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #21 0x00c3b89e in clone () from /lib/i686/nosegneg/libc.so.6
code: #include <boost/regex.hpp> #include <iostream> #include <string> #include <pthread.h> using namespace std; void work(const std::string& input, const std::string& pattern, const std::string& replace_by, const std::string& card, int thread_id) { const boost::regex search_pattern(pattern); const boost::regex card_pattern(card); std::string out = regex_replace(input, search_pattern, replace_by, boost::match_default); std::cout << thread_id << ": " << out << endl; } void* thread_func(void* id) { const string input = "0123-4567-8901-2345"; const string pattern = "1"; const string replace_by = "one"; const string card = "(\\d{3,4})[- ]?(\\d{4})[- ]?(\\d{4})[- ]?(\\d{4})"; int thread_id = (int)id; work(input, pattern, replace_by, card, thread_id); return 0; } const int MAX_THREADS = 32; int main() { pthread_t threads[MAX_THREADS]; std::list<pthread_t*> created_thread_ptrs; for (int i = 0; i < MAX_THREADS; ++i) { if (pthread_create(&(threads[i]), 0, thread_func, (void*)i) == 0) { created_thread_ptrs.push_back(&(threads[i])); } else { cerr << "Error creating thread " << i << endl; } } cerr << "Waiting for threads to terminate\n"; for (std::list<pthread_t*>::iterator it = created_thread_ptrs.begin(); it != created_thread_ptrs.end(); ++it) { pthread_join(*(*it), 0); } return 0; }