Created attachment 251320 [details]
fast/multicol/clip-in-columns.html and fast/multicol/filter-in-columns.html both have image differences when running the tests in safari-600.5-branch.
Created attachment 251321 [details]
Marked as ImageOnlyFailure in r183106: <http://trac.webkit.org/changeset/183106>
These tests were merged to safari-600.5-branch in r179568.
I can't tell from the diff images how broken things are.
Created attachment 251327 [details]
Created attachment 251328 [details]
Looks like we haven't merged some other columns related code.