diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug706110.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug706110.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+function test() {
+  function Bug() { this.prototype }
+  var actual = (new Bug instanceof Bug);
+  assertEq(actual, true);
+}
+test();
+test();
+
+function testLambdaCtor() {
+    var q;
+    for (var x = 0; x < 2; ++x) {
+        var f = function(){};
+	if (x == 1) gc();
+        q = new f;
+    }
+    return q.__proto__ === f.prototype;
+}
+assertEq(testLambdaCtor(), true);