+// Test for Container using non-standard pointer types.
+
+// Copyright (C) 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/>.
+
+
+#include <vector>
+#include <testsuite_hooks.h>
+#include <ext/extptr_allocator.h>
+
+// libstdc++/23578
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::vector<int, __gnu_cxx::_ExtPtr_allocator<int> > vector_type;
+
+ {
+ const int A[] = { 0, 1, 2, 3, 4 };
+ vector_type v(A, A + 5);
+ VERIFY( v.data() == &v.front() );
+ int* pi = &* v.data();
+ VERIFY( *pi == 0 );
+ }
+
+ {
+ const int A[] = { 4, 3, 2, 1, 0 };
+ const vector_type cv(A, A + 5);
+ VERIFY( cv.data() == &cv.front() );
+ const int* pci = &* cv.data();
+ VERIFY( *pci == 4 );
+ }
+}
+
+int main()
+{
+ test01();
+ return 0;
+}