obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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5 files changed, 211 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.C b/libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.C
new file mode 100644
index 000000000..3e86c43d9
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_iostream/cons/16251.C
@@ -0,0 +1,41 @@
+// Copyright (C) 2008, 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/>.
+
+// 27.6.1.5 - Template class basic_iostream 
+
+#include <iostream>
+
+class mystream
+: public std::iostream
+{
+public:
+  mystream () { };
+};
+
+// libstdc++/16251
+void test01()
+{
+  mystream x;
+  x.rdbuf(std::cout.rdbuf());
+  x << std::endl;
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_iostream/cons/2020.cc b/libstdc++-v3/testsuite/27_io/basic_iostream/cons/2020.cc
new file mode 100644
index 000000000..44fe41323
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_iostream/cons/2020.cc
@@ -0,0 +1,54 @@
+// 1999-01-17 bkoz test functionality of basic_filebuf for char_type == char
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+// 2006, 2007, 2008, 2009, 2010
+// 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/>.
+
+// 27.6.1.5 - Template class basic_iostream 
+
+#include <iostream>
+#include <testsuite_hooks.h>
+#include <testsuite_character.h>
+
+// libstdc++/2020
+// should be able to use custom char_type, custom traits type
+void test07()
+{
+  bool test __attribute__((unused)) = true;
+  typedef std::basic_iostream<__gnu_test::pod_ushort> gnu_iostr;
+
+  try
+    { 
+      gnu_iostr obj(0); 
+    }
+  catch(std::exception& obj)
+    { 
+      test = false; 
+      VERIFY( test );
+    }
+}
+
+int main() 
+{
+  test07();
+  return 0;
+}
+
+
+
+// more surf!!!
diff --git a/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/base_classes.cc b/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/base_classes.cc
new file mode 100644
index 000000000..bd3bd81d4
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/base_classes.cc
@@ -0,0 +1,48 @@
+// { dg-do compile }
+// 2003-03-26 B enjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 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
+// <http://www.gnu.org/licenses/>.
+
+// 27.8.1.1 - Template class basic_filebuf 
+
+#include <iostream>
+#include <sstream>
+
+void test01()
+{
+  // Check for required base class.
+  typedef std::iostream test_type;
+  typedef std::istream base_type1;
+  typedef std::ostream base_type2;
+
+  std::stringbuf buf;
+  const test_type& obj = *new test_type(&buf);
+  const base_type1* base1 __attribute__((unused)) = &obj;
+  const base_type2* base2 __attribute__((unused)) = &obj;
+}
+
+// more surf!!!
+
+
+
+
+
+
+
+
+
diff --git a/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/explicit_instantiation.cc b/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/explicit_instantiation.cc
new file mode 100644
index 000000000..2622d9a7f
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/explicit_instantiation.cc
@@ -0,0 +1,31 @@
+// { dg-do compile }
+// 2002-01-08 bkoz
+
+// Copyright (C) 2002, 2004, 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/>.
+
+
+// 27.6.1.5 - Template class basic_iostream
+// NB: This file is for testing iostream with NO OTHER INCLUDES.
+
+#include <istream>
+
+namespace std
+{
+  typedef short type_t;
+  template class basic_iostream<type_t, char_traits<type_t> >;
+} // test
diff --git a/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/typedefs.cc b/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/typedefs.cc
new file mode 100644
index 000000000..35f76abcf
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_iostream/requirements/typedefs.cc
@@ -0,0 +1,37 @@
+// { dg-do compile }
+// 2002-01-08 bkoz
+
+// Copyright (C) 2002, 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/>.
+
+
+// 27.6.1.5 - Template class basic_iostream
+// NB: This file is for testing iostream with NO OTHER INCLUDES.
+
+#include <istream>
+
+// libstdc++/7216
+void test01()
+{
+  // Check for required typedefs
+  typedef std::iostream test_type;
+  typedef test_type::char_type char_type;
+  typedef test_type::traits_type traits_type;
+  typedef test_type::int_type int_type;
+  typedef test_type::pos_type pos_type;
+  typedef test_type::off_type off_type;
+}