1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/iterator-indices-3.js b/js/src/jit-test/tests/ion/iterator-indices-3.js
new file mode 100644
index 0000000000..262f2a03f0
--- /dev/null
+++ b/js/src/jit-test/tests/ion/iterator-indices-3.js
@@ -0,0 +1,31 @@
+function test(o, deleter) {
+  var result = 0;
+  for (var s in o) {
+    if (!o.hasOwnProperty(s)) { continue; }
+    result += o[s];
+    deleter(o);
+  }
+  return result;
+}
+
+with ({}) {}
+
+// Ion-compile |test| with a megamorphic getprop and a generic call.
+for (var i = 0; i < 2000; i++) {
+  var obj = {};
+  obj["x" + i] = 1;
+  test(obj, () => 1);
+  test(obj, () => 2);
+}
+
+assertEq(test({x: 1, y: 2}, (o) => delete o.y), 1);
+assertEq(test([1,2], (o) => delete o[1]), 1);
+assertEq(test([1,2], (o) => {o.length = 0}), 1);
+
+assertEq(test({x: 1, y: 2, z: 3}, (o) => delete o.y), 4);
+assertEq(test([1,2,3], (o) => delete o[1]), 4);
+assertEq(test([1,2,3,4], (o) => {o.length = 2}), 3);
+
+assertEq(test({x: 1, y: 2, z: 3}, (o) => delete o.x), 6);
+assertEq(test([1,2,3], (o) => delete o[0]), 6);
+assertEq(test([1], (o) => {o.length = 0}), 1);