id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13459	boost/regex/v4/perl_matcher_non_recursive.hpp infinite loop bug	komad <tlagyqls7@…>	John Maddock	"== description ==
{{{   do
   {
      --position;
      --count;
      ++state_count;
   }while(count && !can_start(*position, rep->_map, mask_skip));
}}}[[br]]
It performs a continuous loop at this point.
[[br]]
== Steps to Reproduce ==
{{{#0  boost::re_detail_106600::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_greedy_single_repeat (this=0x7fffffffc600, r=0x0)
    at ./boost_1_66_0/boost/regex/v4/perl_matcher_non_recursive.hpp:1411
#1  0x00000000006a2ec3 in boost::re_detail_106600::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind (this=0x7fffffffc600, have_match=0x0)
    at ./boost_1_66_0/boost/regex/v4/perl_matcher_non_recursive.hpp:1266
#2  0x00000000006a92c3 in boost::re_detail_106600::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_all_states (this=0x7fffffffc600)
    at ./boost_1_66_0/boost/regex/v4/perl_matcher_non_recursive.hpp:214
#3  0x00000000006a25d9 in boost::re_detail_106600::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_prefix (this=0x7fffffffc600)
    at ./boost_1_66_0/boost/regex/v4/perl_matcher_common.hpp:336
#4  0x00000000005ed580 in boost::re_detail_106600::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_imp (this=0x7fffffffc600) at ./boost_1_66_0/boost/regex/v4/perl_matcher_common.hpp:220
#5  0x00000000005ecb5f in boost::re_detail_106600::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match (this=0x7fffffffc600) at ./boost_1_66_0/boost/regex/v4/perl_matcher_common.hpp:193
#6  0x00000000004f353f in boost::regex_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > (first=0x0, last=0x0, m=..., e=..., flags=boost::regex_constants::match_partial)
    at ./boost_1_66_0/boost/regex/v4/regex_match.hpp:50
Python Exception <class 'gdb.error'> There is no member named _M_dataplus.: 
#7  0x00000000004f20f4 in boost::regex_match<std::char_traits<char>, std::allocator<char>, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > (s=, m=..., e=..., flags=boost::regex_constants::match_partial) at ./boost_1_66_0/boost/regex/v4/regex_match.hpp:82
}}}

"	Bugs	new	To Be Determined	regex	Boost 1.66.0	Problem		loop bug