r102234 caused RuleData to use 33 bits in it's bitmask
Created attachment 118826 [details] Patch
Comment on attachment 118826 [details] Patch r=me, bonus points for the COMPILE_ASSERT
Committed r102613: <http://trac.webkit.org/changeset/102613>
It would be wise to wait for the windows bot to finish before letting this commit.