try-catch cannot be used in builtin JS code. But relaxing this restriction is useful for writing Promise function in JS.
Created attachment 256070 [details] Patch
Could anyone take a look?
Comment on attachment 256070 [details] Patch Thanks for your review!
Comment on attachment 256070 [details] Patch Clearing flags on attachment: 256070 Committed r186260: <http://trac.webkit.org/changeset/186260>
All reviewed patches have been landed. Closing bug.