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
directory might differ from line-endings of the respective
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1 files changed, 93 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/ext/vstring/operators/1.cc b/libstdc++-v3/testsuite/ext/vstring/operators/1.cc
new file mode 100644
index 000000000..f7cb7992d
--- /dev/null
+++ b/libstdc++-v3/testsuite/ext/vstring/operators/1.cc
@@ -0,0 +1,93 @@
+// 2010-12-15  Paolo Carlini  <paolo.carlini@oracle.com>
+//
+// Copyright (C) 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/>.
+//
+// { dg-options "-std=gnu++0x" }
+// { dg-require-string-conversions "" }
+
+#include <ext/vstring.h>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  using __gnu_cxx::__vstring;
+
+  VERIFY( (__vstring("abc") + __vstring("def")
+	   == __vstring("abcdef")) );
+  __vstring s1("abc");
+  VERIFY( s1 + __vstring("def") == __vstring("abcdef") );
+  __vstring s2("def");
+  VERIFY( __vstring("abc") + s2 == __vstring("abcdef") );
+  VERIFY( __vstring("abc") + 'd' == __vstring("abcd") );
+  VERIFY( __vstring("abc") + "def" == __vstring("abcdef") );
+  VERIFY( 'a' + __vstring("bcd") == __vstring("abcd") );
+  VERIFY( "abc" + __vstring("def") == __vstring("abcdef") );
+
+  VERIFY( (__vstring("abcdefghij") + __vstring("klmnopqrst")
+	   == __vstring("abcdefghijklmnopqrst")) );
+  __vstring s1l("abcdefghij");
+  VERIFY( (s1l + __vstring("klmnopqrst")
+	   == __vstring("abcdefghijklmnopqrst")) );
+  __vstring s2l("klmnopqrst");
+  VERIFY( (__vstring("abcdefghij") + s2l
+	   == __vstring("abcdefghijklmnopqrst")) );
+  VERIFY( (__vstring("abcdefghijklmno") + 'p'
+	   == __vstring("abcdefghijklmnop")) );
+  VERIFY( (__vstring("abcdefghijklmno") + "pqrst"
+	   == __vstring("abcdefghijklmnopqrst")) );
+  VERIFY( ('a' + __vstring("bcdefghijklmnop")
+	   == __vstring("abcdefghijklmnop")) );
+  VERIFY( ("abcde" + __vstring("fghijklmnopqrst")
+	   == __vstring("abcdefghijklmnopqrst")) );
+
+  VERIFY( (__vstring("abcdefghijklmnopqrst") + __vstring("uvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  VERIFY( (__vstring("abcde") + __vstring("fghijklmnopqrstuvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  __vstring s1ll1("abcdefghijklmnopqrst");
+  VERIFY( (s1ll1 + __vstring("uvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  __vstring s1ll2("abcde");
+  VERIFY( (s1ll2 + __vstring("fghijklmnopqrstuvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  __vstring s2ll1("fghijklmnopqrstuvwxy");
+  VERIFY( (__vstring("abcde") + s2ll1
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  __vstring s2ll2("uvwxy");
+  VERIFY( (__vstring("abcdefghijklmnopqrst") + s2ll2
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  VERIFY( (__vstring("abcdefghijklmnopqrst") + 'u'
+	   == __vstring("abcdefghijklmnopqrstu")) );
+  VERIFY( (__vstring("abcdefghijklmnopqrst") + "uvwxy"
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  VERIFY( (__vstring("abcde") + "fghijklmnopqrstuvwxy"
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  VERIFY( ('a' + __vstring("bcdefghijklmnopqrstuvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  VERIFY( ("abcde" + __vstring("fghijklmnopqrstuvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+  VERIFY( ("abcdefghijklmnopqrst" + __vstring("uvwxy")
+	   == __vstring("abcdefghijklmnopqrstuvwxy")) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}