id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5363,Regex library crash,philippeb8@…,John Maddock,"On Cygwin if we link to the gcc version of the regex library, regex_match will cause a crash.  The following code:
#include <iostream>
#include <vector>
#include <string>
#include <boost/regex.hpp>

using namespace std;

int main(int argc, char **argv)
{
    boost::regex re;
    boost::cmatch matches;

    boost::regex_match(""abc"", matches, re.assign(""(a)bc""));

    return 0;
}


Compiled with:
g++ regex.cpp -lboost_regex-gcc-mt

Will crash with the following backtrace:
#0  0x6961deb0 in cygboost_regex-gcc-mt-1_33_1!_ZNK5boost9re_detail31cpp_regex_traits_implementationIcE20lookup_classname_impEPKcS4_ ()
   from /usr/bin/cygboost_regex-gcc-mt-1_33_1.dll
#1  0x69607bc8 in cygboost_regex-gcc-mt-1_33_1!_ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE14construct_initERKNS_11basic_regexIcSA_EENS_15regex_constants12_match_flagsE ()
   from /usr/bin/cygboost_regex-gcc-mt-1_33_1.dll
#2  0x0040781a in perl_matcher (this=0x22c110, first=0x40b11a ""abc"",
    end=0x40b11d """", what=@0x22ccd4, e=@0x22cd00,
    f=boost::regex_constants::match_default, l_base=0x40b11a ""abc"")
    at /usr/include/boost/regex/v4/perl_matcher.hpp:371
#3  0x00401d5b in boost::regex_match<char const*, std::allocator<boost::sub_match<char const*> >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > (first=0x40b11a ""abc"", last=0x40b11d """", m=@0x22ccd4, e=@0x22cd00,
    flags=boost::regex_constants::match_default)
    at /usr/include/boost/regex/v4/regex_match.hpp:49
#4  0x00401df2 in boost::regex_match<char, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char, boost::cpp_regex_traits<char> > > (
    str=0x40b11a ""abc"", m=@0x22ccd4, e=@0x22cd00,
    flags=boost::regex_constants::match_default)
    at /usr/include/boost/regex/v4/regex_match.hpp:73
#5  0x0040127b in main () at regex.cpp:13


This is on Cygwin and the version of the library is: 1.33.1-4.",Bugs,closed,To Be Determined,regex,Boost 1.34.0,Problem,worksforme,,