--- /dev/null
+// Copyright (C) 2004, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+//
+
+#include <string>
+#include <testsuite_hooks.h>
+
+// as per 21.3.4
+int main()
+{
+ bool test __attribute__((unused)) = true;
+
+ {
+ std::wstring empty;
+ wchar_t c = empty[0];
+ VERIFY( c == wchar_t() );
+ }
+
+ {
+ const std::wstring empty;
+ wchar_t c = empty[0];
+ VERIFY( c == wchar_t() );
+ }
+ return 0;
+}