http://bugs.winehq.org/show_bug.cgi?id=17406
--- Comment #31 from Rafał Mużyło galtgendo@o2.pl 2009-05-24 12:34:24 --- In that case, I'll do something I should have done a few comments ago - give the address of the gcc bug. It's http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39333
As mentioned there, problem seems fixed in 4.4.0.