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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/debug/safe_iterator.tcc b/i686-linux-gnu-4.7/usr/include/c++/4.7/debug/safe_iterator.tcc
new file mode 100644
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/debug/safe_iterator.tcc
@@ -0,0 +1,107 @@
+// Debugging iterator implementation (out of line) -*- C++ -*-
+
+// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2012
+// 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file debug/safe_iterator.tcc
+ * This file is a GNU debug extension to the Standard C++ Library.
+ */
+
+#ifndef _GLIBCXX_DEBUG_SAFE_ITERATOR_TCC
+#define _GLIBCXX_DEBUG_SAFE_ITERATOR_TCC 1
+
+namespace __gnu_debug
+{
+ template
+ bool
+ _Safe_iterator<_Iterator, _Sequence>::
+ _M_can_advance(const difference_type& __n) const
+ {
+ typedef typename _Sequence::const_iterator const_debug_iterator;
+ typedef typename const_debug_iterator::iterator_type const_iterator;
+
+ if (this->_M_singular())
+ return false;
+ if (__n == 0)
+ return true;
+ if (__n < 0)
+ {
+ const_iterator __begin = _M_get_sequence()->_M_base().begin();
+ std::pair __dist =
+ __get_distance(__begin, base());
+ bool __ok = ((__dist.second == __dp_exact && __dist.first >= -__n)
+ || (__dist.second != __dp_exact && __dist.first > 0));
+ return __ok;
+ }
+ else
+ {
+ const_iterator __end = _M_get_sequence()->_M_base().end();
+ std::pair __dist =
+ __get_distance(base(), __end);
+ bool __ok = ((__dist.second == __dp_exact && __dist.first >= __n)
+ || (__dist.second != __dp_exact && __dist.first > 0));
+ return __ok;
+ }
+ }
+
+ template
+ template
+ bool
+ _Safe_iterator<_Iterator, _Sequence>::
+ _M_valid_range(const _Safe_iterator<_Other, _Sequence>& __rhs) const
+ {
+ if (!_M_can_compare(__rhs))
+ return false;
+
+ /* Determine if we can order the iterators without the help of
+ the container */
+ std::pair __dist =
+ __get_distance(base(), __rhs.base());
+ switch (__dist.second) {
+ case __dp_equality:
+ if (__dist.first == 0)
+ return true;
+ break;
+
+ case __dp_sign:
+ case __dp_exact:
+ return __dist.first >= 0;
+ }
+
+ /* We can only test for equality, but check if one of the
+ iterators is at an extreme. */
+ /* Optim for classic [begin, it) or [it, end) ranges, limit checks
+ * when code is valid. Note, for the special case of forward_list,
+ * before_begin replaces the role of begin. */
+ if (_M_is_beginnest() || __rhs._M_is_end())
+ return true;
+ if (_M_is_end() || __rhs._M_is_beginnest())
+ return false;
+
+ // Assume that this is a valid range; we can't check anything else
+ return true;
+ }
+} // namespace __gnu_debug
+
+#endif
+