regress-1466387-worker-grayroot.js

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var BUGNUMBER = 1466387;

var summary = 'grayRoot() testing on worker thread';

// Before bug 1466387, the gray root tracer was not set up on worker threads,

// but the grayRoot() function was still available. This resulted in a GC

// collecting the gray root, then a read barrier firing on the dead object.

//

// This is a crashtest. If it does not crash, it will throw a ReferenceError,

// but that's ok.

print('BUGNUMBER: ' + BUGNUMBER);

print("STATUS: " + summary);

if (typeof 'evalInWorder' == 'function') {

    evalInWorker(`

  var wm = new WeakMap();

  grayRoot().map = wm;

  gczeal(4,10);

  evaluate(\`

  grayRoot().map = __v_1173;

  if (!class i   { constructor() { } }  ()) {

    (function __f_252( get       ,    )  {})();

  \`);

`);

this.reportCompare && reportCompare(true, true, summary);