src/third_party/mozjs-45/js/src/tests/js1_8_5/extensions/regress-691746.js

// Any copyright is dedicated to the Public Domain.
// http://creativecommons.org/licenses/publicdomain/

var obj = {};
try {
    obj.watch(QName(), function () {});
} catch (exc) {
}
gc();

reportCompare(0, 0, 'ok');