We try to create a String from a RefPtr<StringImp> which will cause a ref. r153142 added an ASSERT that we aren't on the compilation thread. dumpBytecode() is probably only called from the compilation thread.
Created attachment 230343 [details] Patch
Comment on attachment 230343 [details] Patch r=me
Committed r167917: <http://trac.webkit.org/changeset/167917>