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, 105 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/20_util/tuple/cons/big_tuples.cc b/libstdc++-v3/testsuite/20_util/tuple/cons/big_tuples.cc
new file mode 100644
index 000000000..7bcb51771
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/tuple/cons/big_tuples.cc
@@ -0,0 +1,105 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2007, 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/>.
+
+// Tuple
+
+#include <tuple>
+#include <utility> // for pair
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+// A simple class without conversions to check some things
+struct foo
+{ };
+
+void
+test_constructors()
+{
+  bool test __attribute__((unused)) = true;
+
+  int x1=0,x2=0;
+  const int &z1=x1;
+
+  // Test empty constructor
+  tuple<> ta __attribute__((unused));
+  tuple<int,int> tb;
+  // Test construction from values
+  tuple<int,int> tc(x1,x2);
+  tuple<int,int&> td(x1,x2);
+  tuple<const int&> te(z1);
+  x1=1;
+  x2=1;
+  VERIFY(get<0>(td) == 0 && get<1>(td) == 1 && get<0>(te) == 1);
+
+  // Test identical tuple copy constructor
+  tuple<int,int> tf(tc);
+  tuple<int,int> tg(td);
+  tuple<const int&> th(te);
+  // Test different tuple copy constructor
+  tuple<int,double> ti(tc);
+  tuple<int,double> tj(td);
+  // Test constructing from a pair
+  pair<int,int> pair1(1,1);
+  const pair<int,int> pair2(pair1);
+  tuple<int,int> tl(pair1);
+  tuple<int,const int&> tm(pair1);
+  tuple<int,int> tn(pair2);
+  tuple<int,const int&> to(pair2);  
+}
+
+int 
+main(void) 
+{
+  //test construction
+  typedef tuple<int,int,int,int,int,int,int,int,int,int> type1;
+  type1 a(0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
+  type1 b(0, 0, 0, 0, 0, 0, 0, 0, 0, 2);
+  type1 c(a);
+  typedef tuple<int,int,int,int,int,int,int,int,int,char> type2;
+  type2 d(0, 0, 0, 0, 0, 0, 0, 0, 0, 3);
+  type1 e(d);
+  typedef tuple<foo,int,int,int,int,int,int,int,int,foo> type3;
+  // get
+  VERIFY(get<9>(a)==1 && get<9>(b)==2);
+  // comparisons
+  VERIFY(a==a && !(a!=a) && a<=a && a>=a && !(a<a) && !(a>a));
+  VERIFY(!(a==b) && a!=b && a<=b && a<b && !(a>=b) && !(a>b));
+  //tie
+  {
+    int i = 0;
+  tie(ignore, ignore, ignore, ignore, ignore, ignore, ignore, ignore, 
+      ignore, i) = a;
+  VERIFY(i == 1);
+  }
+  //test_assignment
+  a=d;
+  a=b;
+  //make_tuple
+  make_tuple(0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+  
+  //tuple_size
+  VERIFY(tuple_size<type3>::value == 10);
+  //tuple_element
+  {  
+    foo q1;
+    tuple_element<0,type3>::type q2(q1);
+    tuple_element<9,type3>::type q3(q1);
+  }
+}