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diff --git a/libstdc++-v3/testsuite/22_locale/ctype/is/char/9858.cc b/libstdc++-v3/testsuite/22_locale/ctype/is/char/9858.cc
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+// Copyright (C) 2003, 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/>.
+
+
+// 22.2.1.3 - ctype specializations [lib.facet.ctype.special]
+
+#include <locale>
+#include <testsuite_hooks.h>
+
+int called;
+
+class Derived : public std::ctype<char>
+{
+public:
+  bool 
+  do_is(mask, char_type) const { return true; }
+
+  const char_type* 
+  do_is(const char_type*, const char_type* hi, mask*) const 
+  { return hi; }
+
+  const char_type* 
+  do_scan_is(mask, const char_type*, const char_type* hi) const 
+  { return hi; }
+
+  const char_type* 
+  do_scan_not(mask, const char_type*, const char_type* hi) const 
+  { return hi; }
+};
+
+class Derived2 : public Derived
+{
+public:
+  bool 
+  do_is(mask, char_type) const { called = 1; return true; }
+
+  const char_type* 
+  do_is(const char_type*, const char_type* hi, mask*) const 
+  { called = 5; return hi; }
+
+  const char_type* 
+  do_scan_is(mask, const char_type*, const char_type* hi) const 
+  { called = 10; return hi; }
+
+  const char_type* 
+  do_scan_not(mask, const char_type*, const char_type* hi) const 
+  { called = 15; return hi; }
+};
+
+int main()
+{
+  using namespace std;
+  bool test __attribute__((unused)) = true;
+  Derived2 d2;
+  const Derived& dr = d2;
+
+  const char* lit = "jaylib champion sound";
+  ctype_base::mask m00 = static_cast<std::ctype_base::mask>(0);
+  ctype_base::mask vec[5];
+  for (std::size_t i = 0; i < 5; ++i)
+    vec[i] = m00;
+ 
+  called = 0;
+  dr.do_is(ctype_base::space, 'a');
+  VERIFY( called !=  1);
+
+  called = 0;
+  dr.do_is(lit, lit + 5, vec);
+  VERIFY( called !=  5);
+
+  called = 0;
+  dr.do_scan_is(ctype_base::space, lit, lit + 5);
+  VERIFY( called !=  10);
+
+  called = 0;
+  dr.do_scan_not(ctype_base::space, lit, lit + 5);
+  VERIFY( called !=  15);
+  
+  return 0;
+}