--- /dev/null
+// { dg-require-namedlocale "" }
+
+// 2003-02-06 Petur Runolfsson <peturr02@ru.is>
+
+// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation
+//
+// 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/>.
+
+// 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
+
+#include <locale>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+// Need to explicitly set the state(mbstate_t) to zero.
+// How to do this is not specified by the ISO C99 standard, so we
+// might need to add some operators to make the intuiative case
+// work:
+// w_codecvt::state_type state00;
+// state00 = 0;
+// or, can use this explicit "C" initialization:
+// w_codecvt::state_type state01 = {0, 0};
+// .. except Ulrich says: Use memset. Always use memset. Feel the force...
+void
+zero_state(std::mbstate_t& state)
+{ std::memset(&state, 0, sizeof(std::mbstate_t)); }
+
+// Required instantiation
+// codecvt<wchar_t, char, mbstate_t>
+//
+// Test handling of illegal input sequence in UTF-8.
+void test07()
+{
+ using namespace std;
+ typedef codecvt<wchar_t, char, mbstate_t> w_codecvt;
+ typedef wchar_t int_type;
+ typedef char ext_type;
+
+ bool test __attribute__((unused)) = true;
+ const ext_type* e_lit = "a\xc0\xff";
+ int size = strlen(e_lit);
+
+ locale loc = locale("en_US.UTF-8");
+ locale::global(loc);
+ const w_codecvt* cvt = &use_facet<w_codecvt>(loc);
+
+ w_codecvt::state_type state01;
+ zero_state(state01);
+ int i = cvt->length(state01, e_lit, e_lit + size, 1);
+ VERIFY( i == 1 );
+
+ w_codecvt::state_type state02;
+ zero_state(state02);
+ int j = cvt->length(state02, e_lit, e_lit + size, size);
+ VERIFY( j == 1 );
+
+ w_codecvt::state_type state03;
+ zero_state(state03);
+ int k = cvt->length(state03, e_lit, e_lit + size, size * 2);
+ VERIFY( k == 1 );
+}
+
+int main ()
+{
+ test07();
+ return 0;
+}