--- /dev/null
+// { dg-require-cxa-atexit "" }
+
+// Copyright (C) 2004, 2005, 2006, 2007, 2008, 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/>.
+
+// 20.4.1.1 allocator members
+
+#include <string>
+#include <stdexcept>
+#include <cstdio>
+#include <ext/mt_allocator.h>
+
+static size_t count;
+
+struct count_check
+{
+ count_check() { }
+ ~count_check()
+ {
+ // NB: Using a pool that attempts to clean up resource use.
+ if (count != 0)
+ {
+ printf("allocation/deallocation count is %zu \n", count);
+ throw std::runtime_error("allocation/deallocation count isn't zero");
+ }
+ }
+};
+
+static count_check check;
+
+void* operator new(size_t size) throw(std::bad_alloc)
+{
+ printf("operator new is called \n");
+ void* p = malloc(size);
+ if (p == NULL)
+ throw std::bad_alloc();
+ count++;
+ return p;
+}
+
+void operator delete(void* p) throw()
+{
+ printf("operator delete is called \n");
+ if (p == NULL)
+ return;
+ count--;
+}
+
+template<bool _Thread>
+ struct cleanup_pool : public __gnu_cxx::__pool<true>
+ {
+ cleanup_pool() : __gnu_cxx::__pool<true>() { }
+
+ cleanup_pool(const __gnu_cxx::__pool_base::_Tune& t)
+ : __gnu_cxx::__pool<true>(t) { }
+
+ ~cleanup_pool() throw() { this->_M_destroy(); }
+ };
+
+
+typedef char value_type;
+typedef std::char_traits<value_type> traits_type;
+typedef __gnu_cxx::__common_pool_policy<cleanup_pool, true> policy_type;
+typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type;
+typedef std::basic_string<value_type, traits_type, allocator_type> string_type;
+
+int main()
+{
+ string_type s;
+ s += "bayou bend";
+ return 0;
+}