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diff --git a/externals/ace/checked_iterator.h b/externals/ace/checked_iterator.h
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+// -*- C++ -*-
+
+#ifndef ACE_CHECKED_ITERATOR_H
+#define ACE_CHECKED_ITERATOR_H
+
+/**
+ * @file checked_iterator.h
+ *
+ * @brief Checked iterator factory function.
+ *
+ * Some compilers (e.g. MSVC++ >= 8) issue security related
+ * diagnostics if algorithms such as std::copy() are used in an unsafe
+ * way.  Normally this isn't an issue if STL container iterators are
+ * used in conjuction with the standard algorithms.  However, in cases
+ * where application-specific iterators are use with standard
+ * algorithms that could potentially overrun a buffer, extra care must
+ * be taken to prevent such an overrun.  If supported, checked
+ * iterators can be used to address the potential destination buffer
+ * overrun.
+ *
+ * This header provides function templates that generate the
+ * appropriate checked iterator.  In cases where checked iterators are
+ * not supported, the pointer passed to the function is returned
+ * instead.
+ *
+ * $Id: checked_iterator.h 88263 2009-12-20 07:58:09Z johnnyw $
+ *
+ * @internal The functions and types in this header are meant for
+ *           internal use.  They may change at any point between
+ *           releases.
+ *
+ * @author Ossama Othman
+ */
+
+# if defined (_MSC_VER) && (_MSC_FULL_VER >= 140050000) && (!defined (_STLPORT_VERSION))
+// Checked iterators are currently only supported in MSVC++ 8 or better.
+#  include <iterator>
+# endif  /* _MSC_VER >= 1400 && !_STLPORT_VERSION */
+
+# if defined (_MSC_VER) && (_MSC_FULL_VER >= 140050000) && (!defined (_STLPORT_VERSION))
+template <typename PTR>
+stdext::checked_array_iterator<PTR>
+ACE_make_checked_array_iterator (PTR buf, size_t len)
+{
+  return stdext::checked_array_iterator<PTR> (buf, len);
+}
+# else
+template <typename PTR>
+PTR
+ACE_make_checked_array_iterator (PTR buf, size_t /* len */)
+{
+  // Checked iterators are unsupported.  Just return the pointer to
+  // the buffer itself.
+  return buf;
+}
+# endif  /* _MSC_VER >= 1400 && !_STLPORT_VERSION */
+
+#endif  /* ACE_CHECKED_ITERATOR_H */