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diff --git a/libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t/23953.cc b/libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t/23953.cc
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+++ b/libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t/23953.cc
@@ -0,0 +1,75 @@
+// 2005-09-30  Paolo Carlini  <pcarlini@suse.de>
+
+// Copyright (C) 2005, 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/>.
+
+// 22.2.2.2.1  num_put members
+
+#include <locale>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+struct Punct1: numpunct<wchar_t>
+{ string do_grouping() const { return string(1, char(-1)); } };
+
+struct Punct2: numpunct<wchar_t>
+{ string do_grouping() const { return string("\002") + char(-1); } };
+
+struct Punct3: numpunct<wchar_t>
+{ string do_grouping() const { return string("\001\002") + char(-1); } };
+
+// libstdc++/23953
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  
+  wostringstream oss1, oss2, oss3;
+  wstring result1, result2, result3;
+
+  oss1.imbue(locale(oss1.getloc(), new Punct1));
+  oss2.imbue(locale(oss2.getloc(), new Punct2));
+  oss3.imbue(locale(oss3.getloc(), new Punct3));
+  const num_put<wchar_t>& ng1 = use_facet<num_put<wchar_t> >(oss1.getloc());
+  const num_put<wchar_t>& ng2 = use_facet<num_put<wchar_t> >(oss2.getloc());
+  const num_put<wchar_t>& ng3 = use_facet<num_put<wchar_t> >(oss3.getloc());
+
+  long l1 = 12345l;
+  long l2 = 12345678l;
+  double d1 = 1234567.0;
+
+  ng1.put(oss1.rdbuf(), oss1, L'+', l1);
+  result1 = oss1.str();
+  VERIFY( result1 == L"12345" );
+
+  ng2.put(oss2.rdbuf(), oss2, L'+', l2);
+  result2 = oss2.str();
+  VERIFY( result2 == L"123456,78" );
+
+  oss3.precision(1);
+  oss3.setf(ios_base::fixed, ios_base::floatfield);
+  ng3.put(oss3.rdbuf(), oss3, L'+', d1);
+  result3 = oss3.str();
+  VERIFY( result3 == L"1234,56,7.0" );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}