src/third_party/mozjs-45/js/src/jit-test/tests/ion/bug792944.js

function whoo() {
    (new Object()).foo()
}
Object.prototype.foo = function() { return undefined };
whoo();
Object.prototype.foo = undefined;
gc();
try {
    whoo();
    assertEq(0, 1);
} catch(e) {
    assertEq(e instanceof TypeError, true);
}