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, 56 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/27_io/ios_base/sync_with_stdio/2.cc b/libstdc++-v3/testsuite/27_io/ios_base/sync_with_stdio/2.cc
new file mode 100644
index 000000000..8c10c3fe9
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/ios_base/sync_with_stdio/2.cc
@@ -0,0 +1,56 @@
+// 1999-05-21 bkoz
+// 2000-05-21 Benjamin Kosnik  <bkoz@redhat.com>
+// 2001-01-17 Loren J. Rittle  <ljrittle@acm.org>
+
+// Copyright (C) 1999, 2000, 2001, 2003, 2009 Free Software Foundation
+//
+// 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/>.
+
+// 27.4.2.4 ios_base static members
+// @require@ %-*.tst
+// @diff@ %-*.tst %-*.txt
+
+#include <cstdio>
+#include <sstream>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+// N.B. Once we have called sync_with_stdio(false), we can never go back.
+
+void test02() 
+{
+  bool test __attribute__((unused)) = true;
+  
+  std::stringbuf 	strbuf01;
+  std::ios		ios01(&strbuf01);
+
+  // 1: basic invocation
+  VERIFY( ios01.sync_with_stdio() );
+  VERIFY( ios01.sync_with_stdio(false) ); //returns previous state
+
+  // 2: need to test interleaving of C and C++ io on a file object.
+  VERIFY( std::cout.good() );
+  VERIFY( !std::cout.sync_with_stdio(0) );
+  VERIFY( std::cout.good() );
+  VERIFY( !std::cout.sync_with_stdio(0) );
+  VERIFY( std::cout.good() );
+}
+
+int main(void)
+{
+  test02();
+  return 0;
+}