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Test Info: Warnings

let read;
let reader;
add_task(async function test() {
let g = newGlobal({ wantGlobalProperties: ["ReadableStream"] });
reader = g.eval(`
let stream = new ReadableStream({
start(controller) {
controller.enqueue([]);
},
});
let [b1, b2] = stream.tee();
b1.getReader();
`);
read = new ReadableStream({}).getReader().read;
});
add_task(async function test2() {
read.call(reader);
});