--- /dev/null
+// Copyright (C) 2003, 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/>.
+
+// 22.2.5.3.1 time_put members
+
+// { dg-require-time "" }
+
+#include <locale>
+#include <sstream>
+#include <ctime>
+#include <testsuite_hooks.h>
+
+class TP : public std::time_put<char>
+{
+public:
+ mutable std::string format_chars;
+
+protected:
+ iter_type do_put(iter_type s, std::ios_base&, char_type,
+ const std::tm*, char format, char) const
+ {
+ format_chars.push_back(format);
+ return s;
+ }
+};
+
+// libstdc++/12439
+// time_put::put reads past end of format string
+void test03()
+{
+ using namespace std;
+ bool test __attribute__((unused)) = true;
+
+ ostringstream stream;
+ time_t tt = time(NULL);
+
+ const char* fmt = "%c";
+
+ TP tp;
+ tp.put(TP::iter_type(stream), stream, stream.fill(), localtime(&tt),
+ fmt, fmt + 1);
+ VERIFY( tp.format_chars.empty() );
+}
+
+int main()
+{
+ test03();
+ return 0;
+}