Fix toLocaleString-related breakage on buildbot.

test/mjsunit/regress/regress-r3391.js

Index: test/mjsunit/regress/regress-r3391.js
===================================================================
--- test/mjsunit/regress/regress-r3391.js	(revision 0)
+++ test/mjsunit/regress/regress-r3391.js	(revision 0)
@@ -0,0 +1,77 @@
+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Check what we do if toLocaleString doesn't return a string when we are
+// calling Array.prototype.toLocaleString.  The standard is somewhat
+// vague on this point.  This test is now passed by both V8 and JSC.
+
+var evil_called = 0;
+var evil_locale_called = 0;
+var exception_thrown = 0;
+
+function evil_to_string() {
+  evil_called++;
+  return this;
+}
+
+function evil_to_locale_string() {
+  evil_locale_called++;
+  return this;
+}
+
+var o = {toString: evil_to_string, toLocaleString: evil_to_locale_string};
+
+try {
+  [o].toLocaleString();
+} catch(e) {
+  exception_thrown++;
+}
+
+assertEquals(1, evil_called, "evil1");
+assertEquals(1, evil_locale_called, "local1");
+assertEquals(1, exception_thrown, "exception1");
+
+try {
+  [o].toString();
+} catch(e) {
+  exception_thrown++;
+}
+
+assertEquals(2, evil_called, "evil2");
+assertEquals(1, evil_locale_called, "local2");
+assertEquals(2, exception_thrown, "exception2");
+
+try {
+  [o].join(o);
+} catch(e) {
+  exception_thrown++;
+}
+
+assertEquals(3, evil_called, "evil3");
+assertEquals(1, evil_locale_called, "local3");
+assertEquals(3, exception_thrown, "exception3");
+print("ok");