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// |reftest| skip-if(!this.hasOwnProperty('ReadableStream'))
var otherGlobal = newGlobal({ newCompartment: true });
var obj = { start(c) { } };
var Cancel = otherGlobal.ReadableStream.prototype.tee.call(new ReadableStream(obj))[0].cancel;
var stream = new ReadableStream(obj);
var [branch1, branch2] = ReadableStream.prototype.tee.call(stream);
Cancel.call(branch1, {});
gczeal(2, 1);
Cancel.call(branch2, {});
if (typeof reportCompare === 'function') {
reportCompare(0, 0);
}