src/third_party/mozjs-45/js/src/jit-test/tests/gc/bug-886560.js

// |jit-test| error: x is not defined

// enableShellObjectMetadataCallback ignores its argument, because we don't
// permit metadata callbacks to run JS any more, so this test may be
// unnecessary. We'll preserve its structure just in case.
enableShellObjectMetadataCallback(function(obj) {
    var res = {};
    return res;
  });
gczeal(4);
x();