1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug723040.js b/js/src/jit-test/tests/ion/bug723040.js
new file mode 100644
index 000000000..a7ae7ea1a
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug723040.js
@@ -0,0 +1,16 @@
+function f(x) {
+    for (var i=0; i<50; i++) {
+        assertEq(x == null, false);
+        assertEq(x == undefined, false);
+        assertEq(x != null, true);
+        assertEq(x != undefined, true);
+        assertEq(x === null, false);
+        assertEq(x === undefined, false);
+        assertEq(x !== null, true);
+        assertEq(x !== undefined, true);
+        assertEq(x < null, false);
+        assertEq(x >= null, true);
+    }
+}
+f(10);
+f(0);