id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1070	[iostreams]boost\iostreams\copy.hpp line80 copy_impl	qbowater@…	Jonathan Turkanis	"boost\iostreams\copy.hpp  line 80 - line 100
{{{
#!cpp
template<typename Source, typename Sink>
std::streamsize copy_impl( Source& src, Sink& snk,
                            std::streamsize buffer_size,
                            mpl::false_, mpl::true_ )
{   // Copy from an indirect Source to a direct Sink.
     using namespace std;
     typedef typename char_type_of<Source>::type  char_type;
     typedef pair<char_type*, char_type*>         pair_type;
     detail::basic_buffer<char_type>  buf(buffer_size);
     pair_type                        p = snk.output_sequence();
     streamsize                       total = 0;
     bool                             done  = false;
     while (!done) {
         streamsize amt;
         done = (amt = iostreams::read(src, buf.data(), buffer_size)) == -1;
         std::copy(buf.data(), buf.data() + amt, p.first + total);
         if (amt != -1)
             total += amt;
     }
     return total;
}
}}}
When ""iostreams::read"" return -1 ,amt equal -1,it will assert in std::copy because iterator last < first.

Please read http://article.gmane.org/gmane.comp.lib.boost.devel/161764 for detail."	Bugs	closed	To Be Determined	iostreams	Boost 1.34.0	Problem	fixed