Mark Dickinson <dicki...@gmail.com> added the comment: The problem comes down to the platform strtod: on some systems, strtod sets errno to ERANGE on underflow. The load_float function in Modules/cPickle.c calls PyOS_ascii_strtod and then raises ValueError if that call sets errno.
I suggest replacing the call to PyOS_ascii_strtod with a call to PyFloat_FromString instead. This would make cPickle behave identically to pickle, and would also fix the problem on Windows where 1e-310 is dumped as 0.0. (PyFloat_FromString goes out of its way to use atof instead of strtod to deal with this case.) _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue1672332> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
