1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testConstructorArgs-2.js b/js/src/jit-test/tests/basic/testConstructorArgs-2.js
new file mode 100644
index 0000000000..0a8292dd8c
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testConstructorArgs-2.js
@@ -0,0 +1,12 @@
+function f(a, b, c) {
+    this.a = a;
+    assertEq(b, 'x');
+    assertEq(c, void 0);
+}
+
+for (var x = 0; x < 9; ++x) {
+    f.prototype = {};
+    var obj = new f(x, 'x');  // fewer than f.length arguments
+    assertEq(obj.a, x);
+    assertEq(Object.getPrototypeOf(obj), f.prototype);
+}