STINNER Victor <victor.stin...@haypocalc.com> added the comment: "... A negative file offset may be valid for some devices in some implementations.
The POSIX.1-1990 standard did not specifically prohibit lseek() from returning a negative offset. Therefore, an application was required to clear errno prior to the call and check errno upon return to determine whether a return value of ( off_t)-1 is a negative offset or an indication of an error condition. The standard developers did not wish to require this action on the part of a conforming application, and chose to require that errno be set to [EINVAL] when the resulting file offset would be negative for a regular file, block special file, or directory." Extract of: http://pubs.opengroup.org/onlinepubs/009695399/functions/lseek.html ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue12545> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
