id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5139,Initial Stream Position in Boost.Interprocess.Vectorstream,charles@…,Ion Gaztañaga,"When the boost::interprocess::basic_vectorstream<T> is default-constructed, tellp() initially returns an invalid stream position.  Presumably, it should return position 0 before anything is inserted into the stream, but instead it returns -1.

This is easy to reproduce:

{{{
#!div style=""font-size: 100%""
Code highlighting:
  {{{#!C++
#include <sstream>
#include <boost/interprocess/streams/vectorstream.hpp>

int main()
{
	std::stringstream ss;
	std::cout << ss.tellp() << "" "";

	boost::interprocess::basic_vectorstream<std::vector<char> > vs;
	std::cout << vs.tellp() << std::endl;
}
  }}}
}}}

This should output:
0 -1

In contrast with std::stringstream, we see that boost::interprocess::basic_vectorstream begins with an invalid stream position.  It should begin at 0, but it begins at -1.",Bugs,closed,To Be Determined,interprocess,Boost 1.57.0,Problem,fixed,,superpacko@…