Hey everyone, I&#39;m in desperate need of some help here.&nbsp; I&#39;m working on a webcrawler for a computer science class and I&#39;m using boost::regex to parse some of the html elements.&nbsp; After calling a few boost::regex functions, I get this error.&nbsp; It doesn&#39;t seem to be tied to any specific funcion, but it seeems to come up after a certain number of calls to the functions.&nbsp; Here is the exact error:<br>
<br>test: /usr/include/boost/shared_ptr.hpp:315: T* boost::shared_ptr&lt;T&gt;::operator-&gt;() const [with T = boost::regex_token_iterator_implementation&lt;__gnu_cxx::__normal_iterator&lt;const char*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;]: Assertion `px != 0&#39; failed.<br>
<br>and the backtrace:<br>#0&nbsp; 0x00110416 in __kernel_vsyscall ()<br>#1&nbsp; 0x005424c0 in raise () from /lib/libc.so.6<br>#2&nbsp; 0x00543e88 in abort () from /lib/libc.so.6<br>#3&nbsp; 0x0053b3fe in __assert_fail () from /lib/libc.so.6<br>
#4&nbsp; 0x0806228f in boost::shared_ptr&lt;boost::regex_token_iterator_implementation&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::string&gt;, char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt; &gt;::operator-&gt; (this=0xbfffef04)<br>
&nbsp;&nbsp;&nbsp; at /usr/include/boost/shared_ptr.hpp:315<br>#5&nbsp; 0x080622a7 in boost::regex_token_iterator&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::string&gt;, char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::operator* (this=0xbfffef04)<br>
&nbsp;&nbsp;&nbsp; at /usr/include/boost/regex/v4/regex_token_iterator.hpp:243<br>#6&nbsp; 0x080582cd in HTMLParser::parse<br><br>I have attached my code, so that you can see what functions I&#39;m using and in what context, etc.&nbsp; I really appreciate all your help.<br>
<br>Thanks,<br>Daniel Hansen<br>