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@…