[Boost-users] Assertion failure usign boost::format with Visual C++ 2005

From: Jean-Sébastien Otis (jsotis_at_[hidden])
Date: 2006-01-12 18:19:18

Hello,

Here is a sample that generates an assertion failure with Visual C++ 
2005 using boost 1.33.1.
A NULL ptr is passed to std::string::append() by
boost::io::detail::mk_str().

////////////////////////////////////////////////////////////////////
#include <boost/format.hpp>

int main(int argc, char* argv[])
{
     std::string str(""); // Empty string.

     boost::format frmt( "%s" );
     std::string res = ( frmt % str ).str();

     return 0;
}

////////////////////////////////////////////////////////////////////

This is due to all the assert statements added in the new "secure" STL
that is shipped with VC2005.
But still, I don't think passing NULL to string::append() is correct
anyway...

Regards.
J.S.Otis
Software Developper
InnovMetric Software Inc.