1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/arityMismatchExtraArg.js b/js/src/jit-test/tests/basic/arityMismatchExtraArg.js
new file mode 100644
index 000000000..6803368ac
--- /dev/null
+++ b/js/src/jit-test/tests/basic/arityMismatchExtraArg.js
@@ -0,0 +1,13 @@
+function arityMismatchMissingArg(arg)
+{
+  for (var a = 0, i = 1; i < 10000; i *= 2) {
+    a += i;
+  }
+  return a;
+}
+
+function arityMismatchExtraArg()
+{
+  return arityMismatchMissingArg(1, 2);
+}
+assertEq(arityMismatchExtraArg(), 16383);