1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/array-holes-1.js b/js/src/jit-test/tests/for-of/array-holes-1.js
new file mode 100644
index 000000000..3d8612219
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/array-holes-1.js
@@ -0,0 +1,10 @@
+// for-of does not skip Array holes. The value at a hole is undefined.
+
+var a = [0, , 2, 3];
+var log = [];
+for (var x of a) {
+    assertEq(x, a[log.length]);
+    log.push(x);
+}
+assertEq(log[1], undefined);
+assertEq(log.join(), "0,,2,3");