diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testImplicitThisMiss.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testImplicitThisMiss.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,2 @@
+// |jit-test| error:TypeError
+Function("Object.defineProperty(this, 'x', { configurable:true, get:function() { delete this['x'] } }); x()")();