1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/non262/generators/yield-star-iterator-primitive.js b/js/src/tests/non262/generators/yield-star-iterator-primitive.js
new file mode 100644
index 0000000000..90d9e75785
--- /dev/null
+++ b/js/src/tests/non262/generators/yield-star-iterator-primitive.js
@@ -0,0 +1,31 @@
+var BUGNUMBER = 1021835;
+var summary = "Returning non-object from @@iterator should throw";
+
+print(BUGNUMBER + ": " + summary);
+
+let primitives = [
+    1,
+    true,
+    undefined,
+    null,
+    "foo",
+    Symbol.iterator
+];
+
+for (let primitive of primitives) {
+    let obj = {
+        [Symbol.iterator]() {
+            return primitive;
+        }
+    };
+    assertThrowsInstanceOf(() => {
+        function* g() {
+            yield* obj;
+        }
+        for (let x of g()) {
+        }
+    }, TypeError);
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0);