diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBug752205.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBug752205.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+var x = "one";
+var y = "two";
+const a = x + y;
+var hit = false;
+eval('switch("onetwo") { case a: hit = true; };');
+assertEq(hit, true);