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diff --git a/libstdc++-v3/testsuite/18_support/headers/cstddef/macros.cc b/libstdc++-v3/testsuite/18_support/headers/cstddef/macros.cc
new file mode 100644
index 00000000..1329e584
--- /dev/null
+++ b/libstdc++-v3/testsuite/18_support/headers/cstddef/macros.cc
@@ -0,0 +1,51 @@
+// { dg-do compile }
+// 2001-02-06  Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 2003, 2004, 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/>.
+
+#include <cstddef>
+
+namespace gnu
+{
+  struct test_type
+  {
+    int i;
+    int j;
+  };
+
+  // offsetof
+  void test01()
+  { 
+    std::size_t i __attribute__((unused)) = offsetof(struct test_type, i);
+#ifndef offsetof
+    #error "offsetof_must_be_a_macro"
+#endif
+  }
+
+  // NULL
+  void test02()
+  {
+    // Must not be (void*)0
+    const int j __attribute__((unused)) = NULL;
+
+#ifndef NULL
+    #error "NULL_must_be_a_macro"
+#endif
+  }
+}