1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/cross-realm-iterator-suppression.js b/js/src/jit-test/tests/basic/cross-realm-iterator-suppression.js
new file mode 100644
index 0000000000..cded3d4c88
--- /dev/null
+++ b/js/src/jit-test/tests/basic/cross-realm-iterator-suppression.js
@@ -0,0 +1,32 @@
+function foo(o) {
+  // Ensure a NativeIterator exists for o.
+  for (var s in o) {}
+
+  // Loop over the keys, deleting y.
+  // If y is correctly suppressed, then result should
+  // be the name of the first property.
+  var result = "";
+  for (var s in o) {
+    delete o.y;
+    result += s;
+  }
+  assertEq(o[result], 42);
+}
+
+with ({}) {}
+for (var i = 0; i < 100; i++) {
+  var o = {};
+  o["x" + i] = 42;
+  o.y = 1;
+  foo(o);
+}
+
+// Cross-realm, same-compartment
+var g = newGlobal({newCompartment: false});
+g.eval("var o = {x: 42, y: 1}");
+foo(g.o);
+
+// Cross-realm, cross-compartment
+var g2 = newGlobal({newCompartment: true});
+g2.eval("var o = {x: 42, y: 1}");
+foo(g2.o);