Comment #3 on issue 1756 by mstarzin...@chromium.org: Make defineObject(array, "length", ...) ES5 conform.
http://code.google.com/p/v8/issues/detail?id=1756
Update: The illegal optimization was introduced in r3902. -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev