No need to keep setting needsVisit flag in SmallStrings. The strings are all setup before GC is enabled by the VM, and all in private functions. No need to keep updating the flag if it couldn't have changed.
Created attachment 262782 [details] [PATCH] Proposed Fix
Comment on attachment 262782 [details] [PATCH] Proposed Fix Clearing flags on attachment: 262782 Committed r190829: <http://trac.webkit.org/changeset/190829>
All reviewed patches have been landed. Closing bug.