1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/missingArgTest.js b/js/src/jit-test/tests/basic/missingArgTest.js
new file mode 100644
index 000000000..28fe79036
--- /dev/null
+++ b/js/src/jit-test/tests/basic/missingArgTest.js
@@ -0,0 +1,12 @@
+function arity1(x)
+{
+  return (x == undefined) ? 1 : 0;
+}
+function missingArgTest() {
+  var q;
+  for (var i = 0; i < 10; i++) {
+    q = arity1();
+  }
+  return q;
+}
+assertEq(missingArgTest(), 1);