1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/constructor-ordering-2.js b/js/src/tests/non262/RegExp/constructor-ordering-2.js
new file mode 100644
index 0000000000..21a6bbeca7
--- /dev/null
+++ b/js/src/tests/non262/RegExp/constructor-ordering-2.js
@@ -0,0 +1,21 @@
+// Make sure that we don't ToString the second argument until /after/ doing
+// the appropriate subclassing lookups
+
+var didLookup = false;
+
+var re = /a/;
+var flags = { toString() { assertEq(didLookup, true); return "g"; } };
+var newRe = Reflect.construct(RegExp, [re, flags],
+                              Object.defineProperty(function(){}.bind(null), "prototype", {
+  get() {
+    didLookup = true;
+    return RegExp.prototype;
+  }
+}));
+
+assertEq(Object.getPrototypeOf(newRe), RegExp.prototype);
+assertEq(didLookup, true);
+
+
+if (typeof reportCompare === 'function')
+    reportCompare(0,0,"OK");