1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/iterator-indices-9.js b/js/src/jit-test/tests/ion/iterator-indices-9.js
new file mode 100644
index 0000000000..631beee5d3
--- /dev/null
+++ b/js/src/jit-test/tests/ion/iterator-indices-9.js
@@ -0,0 +1,34 @@
+// Tests SetPropertyCache sets to object.
+function test(obj) {
+  let index = 0;
+  for (var s in obj) {
+    if (s.startsWith("test")) {
+      obj[s] = index;
+    }
+    index++;
+  }
+  index = 0;
+  for (var s in obj) {
+    if (s.startsWith("test")) {
+      assertEq(obj[s], index);
+    }
+    index++;
+  }
+}
+
+var arr = [];
+for (var i = 0; i < 2; i++) {
+  var obj = {};
+  for (var j = 0; j < i * 20; j++) {
+    obj["x_" + i + "_" + j] = 1;
+  }
+  obj.testKey = 1;
+  arr.push(obj);
+}
+
+with ({}) {}
+for (var i = 0; i < 2000; i++) {
+  var idx = i % arr.length;
+  test(arr[idx]);
+}
+