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diff --git a/libstdc++-v3/testsuite/22_locale/ctype/narrow/char/19955.cc b/libstdc++-v3/testsuite/22_locale/ctype/narrow/char/19955.cc
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+// Copyright (C) 2005 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+// 22.2.1.3.2 ctype<char> members
+
+#include <locale>
+#include <testsuite_hooks.h>
+
+class Ctype1
+: public std::ctype<char> 
+{
+protected:
+  const char*
+  do_narrow(const char* lo, const char* hi,
+	    char dflt, char* to) const 
+  {
+    for (int i = 0; lo != hi; ++lo, ++to, ++i)
+      *to = *lo + i;
+    return hi;
+  }
+};
+
+class Ctype2
+: public std::ctype<char> 
+{
+protected:
+  const char*
+  do_narrow(const char* lo, const char* hi,
+	    char dflt, char* to) const 
+  {
+    for (int i = 0; lo != hi; ++lo, ++to, ++i)
+      if (*lo == '\000')
+	*to = dflt;
+      else
+	*to = *lo;
+    return hi;
+  }
+};
+
+// libstdc++/19955
+void test01() 
+{
+  using namespace std;
+  bool test __attribute__((unused)) = true;
+
+  const char src[] = "abcd";
+
+  locale mylocale1(locale::classic(), new Ctype1);
+  const ctype<char>& mc1 = use_facet<ctype<char> >(mylocale1);
+
+  char dst1[sizeof(src)];
+  memset(dst1, 0, sizeof(src));
+  char dst2[sizeof(src)];
+  memset(dst2, 0, sizeof(src));
+  
+  mc1.narrow(src, src + sizeof(src), '*', dst1);
+  mc1.narrow(src, src + sizeof(src), '*', dst2);
+
+  VERIFY( !memcmp(dst1, "aceg\004", 5) );
+  VERIFY( !memcmp(dst1, dst2, 5) );
+
+  locale mylocale2(locale::classic(), new Ctype2);
+  const ctype<char>& mc2 = use_facet<ctype<char> >(mylocale2);
+
+  char dst3[sizeof(src)];
+  memset(dst3, 0, sizeof(src));
+  char dst4[sizeof(src)];
+  memset(dst4, 0, sizeof(src));
+  
+  mc2.narrow(src, src + sizeof(src), '*', dst3);
+  mc2.narrow(src, src + sizeof(src), '*', dst4);
+
+  VERIFY( !memcmp(dst3, "abcd*", 5) );
+  VERIFY( !memcmp(dst3, dst4, 5) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}