1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Map-iterator-proxies-1.js b/js/src/jit-test/tests/collections/Map-iterator-proxies-1.js
new file mode 100644
index 0000000000..545d80b6ac
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Map-iterator-proxies-1.js
@@ -0,0 +1,8 @@
+// for-of works on a cross-compartment wrapper of a Map.
+
+var g = newGlobal();
+var mw = g.eval("new Map([['a', 1], ['b', 2]])");
+var log = '';
+for (let [k, v] of mw)
+    log += k + v;
+assertEq(log, "a1b2");