1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug570663-2.js b/js/src/jit-test/tests/basic/bug570663-2.js
new file mode 100644
index 0000000000..bc4b08869d
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug570663-2.js
@@ -0,0 +1,12 @@
+function f() {
+    var x;
+    for (var a = 0; a < 4; a++) {
+	switch (NaN) {
+	default:
+	    x = a;
+	}
+    }
+    assertEq(x, 3);
+}
+
+f();