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diff --git a/libstdc++-v3/testsuite/26_numerics/partial_sum/1.cc b/libstdc++-v3/testsuite/26_numerics/partial_sum/1.cc
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+++ b/libstdc++-v3/testsuite/26_numerics/partial_sum/1.cc
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+// Copyright (C) 2001, 2004 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 26.4.3 [lib.partial.sum]
+// 26.4.4 [lib.adjacent.difference]
+
+#include <algorithm>
+#include <numeric>
+#include <testsuite_hooks.h>
+
+int A[] = {1, 4, 9, 16, 25, 36, 49, 64, 81, 100};
+int B[] = {1, 3, 5, 7, 9, 11, 13, 15, 17, 19};
+const int N = sizeof(A) / sizeof(int);
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  int D[N];
+
+  std::partial_sum(B, B + N, D);
+  VERIFY( std::equal(D, D + N, A) );
+}
+
+int
+main()
+{
+  test01();
+  return 0;
+}