Not sure if it is relevant but, boost::iostreams::copy() closes the stream and calls destructor on it. So my guess is states are reset upon destruction. -Anand On Thu, Apr 29, 2010 at 1:00 PM, Nicola wrote:

Hi, can someone tell me if the behaviour of the enclosed example is a bug? In my test, the last two assertions fail, but I don't understand why (Boost 1.42.0).

Thanks, Nicola

#include #include #include #include <cassert> #include <fstream> #include <sstream>

struct bz2istream : public boost::iostreams::filtering_streamboost::iostreams::input { public: bz2istream(std::string const& path) : pBz2file(path.c_str(), std::ios_base::in | std::ios_base::binary) { push(boost::iostreams::bzip2_decompressor()); push(pBz2file); } private: std::ifstream pBz2file; };

int main() { bz2istream bzippedfile("foo.bz2"); std::ostringstream os; boost::iostreams::copy(bzippedfile, os);

assert(!(bzippedfile.rdstate() & std::ios_base::goodbit)); // Ok assert(bzippedfile.rdstate() & std::ios_base::eofbit); // Fails assert(!(bzippedfile.good())); // Fails }

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users