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diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc b/libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc
new file mode 100644
index 00000000..9626b535
--- /dev/null
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/2.cc
@@ -0,0 +1,110 @@
+// 1999-06-08 bkoz
+
+// Copyright (C) 1999, 2003, 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
+// .
+
+// 21.3 template class basic_string
+
+#include
+#include
+#include
+
+// Do a quick sanity check on known problems with element access and
+// ref-counted strings. These should all pass, regardless of the
+// underlying string implementation, of course.
+bool test01(void)
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::string::size_type csize_type;
+ typedef std::string::iterator siterator;
+ typedef std::string::reverse_iterator sriterator;
+ csize_type csz01, csz02;
+ siterator it1;
+ sriterator rit1;
+
+ std::string str01("montara beach, half moon bay");
+ const std::string str02("ocean beach, san francisco");
+ std::string str03;
+
+ // 21.3 p 5
+
+ // References, pointers, and iterators referring to the elements of
+ // a basic_string may be invalidated by the following uses of that
+ // basic_string object:
+
+ // ...
+
+ // Susequent to any of the above uses except the forms of insert()
+ // and erase() which return iterators, the first call to non-const
+ // member functions operator[](), at(), begin(), rbegin(), end(), or
+ // rend()
+
+ str03 = str01;
+ it1 = str01.begin();
+ *it1 = 'x';
+ VERIFY( str01[0] == 'x' );
+ VERIFY( str03[0] == 'm' );
+
+ str03 = str01;
+ csz01 = str01.size();
+ rit1 = str01.rbegin(); // NB: Pointing at one-past the end, so ...
+ *rit1 = 'z'; // ... but it's taken care of here
+ VERIFY( str01[csz01 - 1] == 'z' );
+ VERIFY( str03[csz01 - 1] == 'y' );
+
+ str03 = str01;
+ csz01 = str01.size();
+ std::string::reference r1 = str01.at(csz01 - 2);
+ VERIFY( str03 == str01 );
+ r1 = 'd';
+ VERIFY( str01[csz01 - 2] == 'd' );
+ VERIFY( str03[csz01 - 2] == 'a' );
+
+ str03 = str01;
+ csz01 = str01.size();
+ std::string::reference r2 = str01[csz01 - 3];
+ VERIFY( str03 == str01 );
+ r2 = 'w';
+ VERIFY( str01[csz01 - 3] == 'w' );
+ VERIFY( str03[csz01 - 3] == 'b' );
+
+ str03 = str01;
+ csz02 = str01.size();
+ it1 = str01.end();
+ VERIFY( str03 == str01 );
+ --it1;
+ *it1 = 'q';
+ VERIFY( str01[csz02 - 1] == 'q' );
+ VERIFY( str03[csz02 - 1] == 'z' );
+
+ str03 = str01;
+ rit1 = str01.rend();
+ VERIFY( str03 == str01 );
+ --rit1;
+ *rit1 = 'p';
+ VERIFY( str01[0] == 'p' );
+ VERIFY( str03[0] == 'x' );
+
+ // need to also test for const begin/const end
+ return test;
+}
+
+int main()
+{
+ test01();
+ return 0;
+}