--- /dev/null
+// Copyright (C) 2005, 2006, 2007, 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/>.
+
+
+// 22.2.1.3.2 ctype<char> members
+
+#include <locale>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+class Ctype1
+: public std::ctype<char>
+{
+protected:
+ const char*
+ do_narrow(const char* lo, const char* hi,
+ char, 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;
+}