diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testStrict.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testStrict.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+function testStrict() {
+    var n = 10, a = [];
+    for (var i = 0; i < 10; ++i) {
+        a[0] = (n === 10);
+        a[1] = (n !== 10);
+        a[2] = (n === null);
+        a[3] = (n == null);
+    }
+    return a.join(",");
+}
+assertEq(testStrict(), "true,false,false,false");