| Tests that Arraify does good things when Object.preventExtensions() has been called. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS var o = {}; Object.preventExtensions(o); foo(o) is void 0 on all iterations including after DFG tier-up. | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |