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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1 files changed, 106 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/5.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/5.cc
new file mode 100644
index 000000000..25ae66b41
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/5.cc
@@ -0,0 +1,106 @@
+// 2003-05-20  Paolo Carlini  <pcarlini@unitus.it>
+
+// 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/>.
+
+// 27.8.1.3 filebuf member functions
+// @require@ %-*.tst %-*.txt
+// @diff@ %-*.tst %-*.txt
+
+// Test that upon filebuf::close() 27.8.1.1,3 is enforced.
+
+#include <fstream>
+#include <testsuite_hooks.h>
+
+const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
+const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create
+
+bool overflow_called;
+bool underflow_called;
+bool uflow_called;
+
+class Close_filebuf : public std::filebuf
+{
+public:
+  int_type overflow(int_type c)
+  {
+    overflow_called = true;
+    return std::filebuf::overflow(c);
+  }
+
+  int_type underflow()
+  {
+    underflow_called = true;
+    return std::filebuf::underflow();
+  }
+
+  int_type uflow()
+  {
+    uflow_called = true;
+    return std::filebuf::uflow();
+  }
+};
+
+void test_05()
+{
+  bool test __attribute__((unused)) = true;
+
+  Close_filebuf fb_01, fb_02;
+  char buffer[] = "xxxxxxxxxx";
+
+  // 'in'
+  fb_01.open(name_01, std::ios_base::in);
+  fb_01.sgetc();
+
+  fb_01.close();
+
+  underflow_called = false;
+  fb_01.sgetc();
+  VERIFY( underflow_called == true );
+
+  uflow_called = false;
+  fb_01.sbumpc();
+  VERIFY( uflow_called == true );
+
+  uflow_called = false;
+  fb_01.snextc();
+  VERIFY( uflow_called == true );
+ 
+  uflow_called = false;
+  fb_01.sgetn(buffer, sizeof(buffer));
+  VERIFY( uflow_called == true );
+
+  // 'out'
+  fb_02.open(name_02, std::ios_base::out);
+
+  fb_02.close();
+
+  overflow_called = false;
+  fb_02.sputc('T');
+  VERIFY( overflow_called == true );
+
+  overflow_called = false;
+  fb_02.sputn(buffer, sizeof(buffer));
+  VERIFY( overflow_called == true );
+}
+
+int
+main()
+{
+  test_05();
+  return 0;
+}