1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arguments/spread-redefine-length.js b/js/src/jit-test/tests/arguments/spread-redefine-length.js
new file mode 100644
index 0000000000..8c62ddd5d9
--- /dev/null
+++ b/js/src/jit-test/tests/arguments/spread-redefine-length.js
@@ -0,0 +1,18 @@
+function foo() {
+    arguments.length = 2;
+    return bar(...arguments);
+}
+
+function bar() {
+    var result = 0;
+    for (var x of arguments) {
+        result += x;
+    }
+    return result;
+}
+
+var sum = 0;
+for (var i = 0; i < 100; i++) {
+    sum += foo(1,2,3,4,5,6);
+}
+assertEq(sum,300);