There's a crash below SourceProvider::hash() if you press ctrl+d in the jsc CLI tool.
Created attachment 267822 [details]
Don't know how to test this. Passing a nil string to the ObjC API, or a NULL string to the C API both fail before getting this far.
Comment on attachment 267822 [details]
Clearing flags on attachment: 267822
Committed r194409: <http://trac.webkit.org/changeset/194409>
All reviewed patches have been landed. Closing bug.