id summary reporter owner description type status milestone component version severity resolution keywords cc 1185 iostreams::direct_streambuf::is_open always returns false if output iterator is not null ysb33r@… Jonathan Turkanis "In iostreams/detail/streambuf/direct_streambuf.hpp, the code {{{ bool direct_streambuf::is_open() { return ibeg_ != 0 && !obeg_ != 0; } }}} has a misplaced !obeg_. It should read {{{ { return ibeg_ != 0 && obeg_ != 0; } }}} " Bugs closed To Be Determined iostreams Boost 1.34.1 Problem fixed