1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/concat/S15.5.4.6_A4_T2.js b/js/src/tests/test262/built-ins/String/prototype/concat/S15.5.4.6_A4_T2.js
new file mode 100644
index 0000000000..3a965d4e5a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/concat/S15.5.4.6_A4_T2.js
@@ -0,0 +1,40 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    when String.prototype.concat([,[...]]) is called first Call ToString,
+    giving it the this value as its argument
+es5id: 15.5.4.6_A4_T2
+description: Override toString function onto function, that throw exception
+---*/
+
+var __instance = {
+  toString: function() {
+    throw "intostring";
+  }
+};
+var __obj = {
+  toString: function() {
+    throw "infirstarg";
+  }
+};
+
+__instance.concat = String.prototype.concat;
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+try {
+  String.prototype.concat.call(__instance, __obj, notexist);
+  throw new Test262Error('#1: "String.prototype.concat.call(__instance,__obj, notexist)" lead to throwing exception');
+} catch (e) {
+  if (e !== "intostring") {
+    throw new Test262Error('#1: e === "intostring". Actual: ' + e);
+  }
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+var notexist;
+
+reportCompare(0, 0);