http://bugs.winehq.org/show_bug.cgi?id=13084
--- Comment #7 from Jonathan Isom jeisom@gmail.com 2008-11-18 08:28:11 --- (In reply to comment #6)
Might be helpful to file a bug with gentoo then.
Gentoo doesn't support vanilla sources. They only support their patches(gentoo-sources) and currently I'm using vanilla.