id summary reporter owner description type status milestone component version severity resolution keywords cc 3353 warning C4244: Py_ssize_t to unsigned int davidm@… Dave Abrahams "I am seeing a compiler warning regarding an unsafe type conversion: {{{ 1>c:\program files\boost\boost_1_39\boost\python\detail\caller.hpp(55) : warning C4244: 'return' : conversion from 'Py_ssize_t' to 'unsigned int', possible loss of data }}} Visual Studio 2005 Note that this may be a known issue or regression, as it was discussed 2 years ago here: http://lists.boost.org/Archives/boost/2007/04/120377.php " Bugs new Boost 1.40.0 python USE GITHUB Boost 1.39.0 Problem