http://bugs.winehq.org/show_bug.cgi?id=26381
--- Comment #2 from Andrew Nguyen arethusa26@gmail.com 2011-03-11 09:05:35 CST --- Created an attachment (id=33600) --> (http://bugs.winehq.org/attachment.cgi?id=33600) msvcrt: Ensure that old buffer contents are copied when allocating a growable pf_output buffer for the first time.
Please try this patch.