diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug652060.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug652060.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+var x = -false;
+var y = -0;
+assertEq(-x === x, true);
+assertEq(-x === y, true);
+assertEq(-y !== y, false);
+
+assertEq(-x == x, true);
+assertEq(-x == y, true);
+assertEq(-y != y, false);