1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/stream/bug-1503406.js b/js/src/jit-test/tests/stream/bug-1503406.js
new file mode 100644
index 0000000000..4c598d6b43
--- /dev/null
+++ b/js/src/jit-test/tests/stream/bug-1503406.js
@@ -0,0 +1,13 @@
+let g = newGlobal();
+let reader = g.eval(`
+    let stream = new ReadableStream({
+        start(controller) {
+            controller.enqueue([]);
+        },
+    });
+    let [b1, b2] = stream.tee();
+    b1.getReader();
+`);
+let read = new ReadableStream({}).getReader().read;
+drainJobQueue();  // let the stream be started before reading
+read.call(reader);