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Worker: Don't touch SharedWorkerClient when a connecting document may get destroyed #16841

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merged 1 commit into from May 16, 2019
Merged

Worker: Don't touch SharedWorkerClient when a connecting document may get destroyed #16841

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28 changes: 28 additions & 0 deletions workers/SharedWorker-detach-frame-in-error-event.html
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<!DOCTYPE html>
<title>Test frame detach in shared worker's error handler</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<iframe id="frame"></iframe>
</body>
<script>
promise_test(t => {
const frame = document.getElementById('frame');

const promise = new Promise(resolve => {
window.detachFrame = () => {
frame.remove();
resolve();
};
});

// Start a new worker with an invalid script in the frame, and detach the
// frame in the worker's error handler. This shouldn't crash.
const s = frame.contentWindow.document.createElement('script');
s.innerHTML = "const worker = new SharedWorker('error');" +
"worker.onerror = () => { window.parent.detachFrame(); };";
frame.contentWindow.document.body.appendChild(s);

return promise;
});
</script>