1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/arguments-7.js b/js/src/jit-test/tests/for-of/arguments-7.js
new file mode 100644
index 000000000..cf58c2ba5
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/arguments-7.js
@@ -0,0 +1,17 @@
+// Changing arguments.length during a for-of loop iterating over arguments affects the loop.
+
+load(libdir + "iteration.js");
+
+Object.prototype[Symbol.iterator] = Array.prototype[Symbol.iterator];
+
+var s;
+function f() {
+    for (var v of arguments) {
+        s += v;
+        arguments.length--;
+    }
+}
+
+s = '';
+f('a', 'b', 'c', 'd', 'e');
+assertEq(s, 'abc');