http://bugs.winehq.org/show_bug.cgi?id=17406
--- Comment #33 from Rafał Mużyło galtgendo@o2.pl 2009-05-24 13:29:00 --- You may try to construct a testcase from that coreutils file. While it's a case of opposite problem, it still may give a hint of what exactly goes wrong (and it looks promising, that is as if a testcase could be actually created from it without much work).