diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/proxy/getElementIfPresent-not-present.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/proxy/getElementIfPresent-not-present.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+x = (/x/).exec();
+y = wrapWithProto((new WeakMap), x);
+y.length = 7;
+Array.prototype.push.call(y, 1);
+Array.prototype.reverse.call(y);