Dear all, I just played a little bit with the regex_token_iterator ( boost v 1.32) and modified the "html" example. I found this (strange?) behavior when i "tokenize" a string. while (i != j) { std::cout << i++->str().length() << std::endl; } crashes at runtime at the last sub-match of a match with: mtest: ../boost_1_32_0/boost/shared_ptr.hpp:253: T* boost::shared_ptr<T>::operator->() const [with T = boost::regex_token_iterator_implementation<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, boost::regex_traits<char>, std::allocator<char> >]: Assertion `px != 0' failed. zsh: 24497 abort mtest test.html Whereas: while (i != j) { std::cout << i->str().length() << std::endl; i++; } works fine. Is this behavior a bug, or is it correct, that the first version does not work, if yes, why? Cheers, Joe. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com