1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/arrays-shrinking-2.js b/js/src/jit-test/tests/for-of/arrays-shrinking-2.js
new file mode 100644
index 0000000000..86c77303d0
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/arrays-shrinking-2.js
@@ -0,0 +1,9 @@
+// Using shift to cut values out of an array does not change the next index of an existing iterator.
+
+var a = [1, 2, 3, 4, 5, 6, 7, 8];
+var s = '';
+for (var v of a) {
+    s += v;
+    a.shift();
+}
+assertEq(s, '1357');