static bool CloneProperties(JSContext *cx, HandleObject selfHostedObject, HandleObject clone) { AutoIdVector ids(cx); for (size_t i = 0; i < selfHostedObject->getDenseInitializedLength(); i++) { if (!selfHostedObject->getDenseElement(i).isMagic(JS_ELEMENTS_HOLE)) { if (!ids.append(INT_TO_JSID(i))) return false; } } for (Shape::Range<NoGC> range(selfHostedObject->lastProperty()); !range.empty(); range.popFront()) { Shape &shape = range.front(); if (shape.enumerable() && !ids.append(shape.propid())) return false; } RootedId id(cx); RootedValue val(cx); RootedValue selfHostedValue(cx); for (uint32_t i = 0; i < ids.length(); i++) { id = ids[i]; if (!GetUnclonedValue(cx, selfHostedObject, id, &selfHostedValue)) return false; if (!CloneValue(cx, selfHostedValue, &val) || !JS_DefinePropertyById(cx, clone, id, val, 0)) { return false; } } return true; }