Patches item #1452698, was opened at 2006-03-17 12:08 Message generated for change (Settings changed) made by mclow You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=307586&aid=1452698&group_id=7586 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody)

Assigned to: Jonathan Turkanis (turkanis) Summary: iostreams // file_descriptor::seek BUG on files > 4 GB

Initial Comment: Boost 1.33.1 iostreams library file_descriptor::seek() method file_descriptor.cpp, line 198 Win32, Visual C++ 2005 The method seek() can return a wrong value of a newly set offset when the offset is further than 4 GB. //--------------- return offset_to_position((lDistanceToMoveHigh << 32) + dwResultLow); //--------------- The code above has a bug. On 32-bit systems the expression (lDistanceToMoveHigh << 32) equals to lDistanceToMoveHigh. The correct code should first cast the lDistanceToMoveHigh variable to 64-bit and then shift it. //--------------- return (static_cast<boost::intmax_t> lDistanceToMoveHigh) << 32) + dwResultLow; //--------------- Sergey Kolodkin ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=307586&aid=1452698&group_id=7586 ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Boost-bugs mailing list Boost-bugs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs