http://bugs.winehq.org/show_bug.cgi?id=21165
--- Comment #17 from Erich Hoover ehoover@mines.edu 2010-02-17 14:12:42 --- (In reply to comment #15)
... However, it's entirely possible that what really happens on Windows is that ((DWORD_PTR)-1) is a legit "ALL" request.
Hmm, this is a result that I was not expecting (yes AND no): https://winetestbot.geldorp.nl/JobDetails.pl?Key=747
Line 806 of test: ok(SetThreadAffinityMask(curthread,(-1))==0, "SetThreadAffinityMask passed for an illegal processor\n");