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function test() {
assertEq(getFuseState().ArrayPrototypeIteratorFuse.intact, true);
// Redefine Array.prototype properties but don't change their values.
// This shouldn't pop the fuse.
let proto = Array.prototype;
for (let i = 0; i < 3; i++) {
for (let p of Reflect.ownKeys(proto)) {
let desc = Object.getOwnPropertyDescriptor(proto, p);
if (desc.configurable) {
// Change desc.enumerable to ensure this isn't a no-op.
desc.enumerable = !desc.enumerable;
Object.defineProperty(proto, p, desc);
}
}
}
assertEq(getFuseState().ArrayPrototypeIteratorFuse.intact, true);
// Now actually change the value. This pops the fuse.
let desc = Object.getOwnPropertyDescriptor(proto, Symbol.iterator);
desc.value = function() {};
Object.defineProperty(proto, Symbol.iterator, desc);
assertEq(getFuseState().ArrayPrototypeIteratorFuse.intact, false);
}
test();