Bug: rdar://problem/4465598 REGRESSION (TOT): Crash occurs at http://maps.google.com/?output=html ( KJS::Identifier::add(KJS::UString::Rep*)
This cause for this bug was that the code to save the window object's property map tried to use the deleted property sentinel key as a normal pointer.
To run this test in Safari:
When the automated version of this test passes, you'll see a PASS message below. (The automated version is currently disabled because DumpRenderTree doesn't work with the back/forward cache enabled.)