Index: ChangeLog
===================================================================
--- ChangeLog	(revision 178910)
+++ ChangeLog	(working copy)
@@ -1,3 +1,59 @@
+2011-09-16  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* testsuite/23_containers/array/comparison_operators/
+	less_or_equal.cc: New.
+	* testsuite/23_containers/array/comparison_operators/
+	greater_or_equal.cc: Likewise.
+	* testsuite/23_containers/array/comparison_operators/less.cc: Likewise.
+	* testsuite/23_containers/array/comparison_operators/equal.cc: Likewise.
+	* testsuite/23_containers/array/comparison_operators/not_equal.cc:
+	Likewise.
+	* testsuite/23_containers/array/comparison_operators/greater.cc:
+	Likewise.
+	* testsuite/23_containers/array/iterators/end_is_one_past.cc: Likewise.
+	* testsuite/23_containers/array/capacity/empty.cc: Likewise.
+	* testsuite/23_containers/array/capacity/max_size.cc: Likewise.
+	* testsuite/23_containers/array/capacity/size.cc: Likewise.
+	* testsuite/23_containers/array/tuple_interface/tuple_element.cc:
+	Likewise.
+	* testsuite/23_containers/array/tuple_interface/tuple_size.cc:
+	Likewise.
+	* testsuite/23_containers/array/element_access/at_out_of_range.cc:
+	Likewise.
+	* testsuite/23_containers/array/element_access/back.cc: Likewise.
+	* testsuite/23_containers/array/element_access/front.cc: Likewise.
+	* testsuite/23_containers/array/element_access/data.cc: Likewise.
+	* testsuite/23_containers/array/cons/aggregate_initialization.cc:
+	Likewise.
+	* testsuite/23_containers/array/requirements/zero_sized_arrays.cc:
+	Likewise.
+	* testsuite/23_containers/array/requirements/contiguous.cc: Likewise.
+	* testsuite/23_containers/array/requirements/member_swap.cc: Likewise.
+	* testsuite/23_containers/array/specialized_algorithms/swap.cc:
+	Likewise.
+	* testsuite/23_containers/array/constexpr_get.cc: Move...
+	* testsuite/23_containers/array/tuple_interface/constexpr_get.cc:
+	... here.
+	* testsuite/23_containers/array/requirements/get.cc: Move...
+	* testsuite/23_containers/array/tuple_interface/get: ... here.
+	* testsuite/23_containers/array/at_neg.cc: Move...
+	* testsuite/23_containers/array/element_access: ... here.
+	* testsuite/23_containers/array/requirements/constexpr_functions.cc:
+	Move...
+	* testsuite/23_containers/array/capacity: ... here.
+	* testsuite/23_containers/array/requirements/
+	constexpr_element_access.cc: Move...
+	* testsuite/23_containers/array/element_access: ... here.
+
+	* testsuite/20_util/duration/cons/1_neg.cc: Avoid -Wall warnings.
+	* testsuite/20_util/tuple/creation_functions/constexpr.cc: Likewise.
+	* testsuite/20_util/pair/make_pair/constexpr.cc: Likewise.
+	* testsuite/20_util/time_point/nonmember/constexpr.cc: Likewise.
+	* testsuite/23_containers/bitset/operations/constexpr.cc: Likewise.
+
+	* testsuite/20_util/duration/cons/1_neg.cc: Discard bogus warning.
+	* testsuite/20_util/forward/1_neg.cc: Likewise.
+
 2011-09-15  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/std/tuple (make_tuple, forward_as_tuple): Declare constexpr.
Index: testsuite/23_containers/bitset/operations/constexpr.cc
===================================================================
--- testsuite/23_containers/bitset/operations/constexpr.cc	(revision 178910)
+++ testsuite/23_containers/bitset/operations/constexpr.cc	(working copy)
@@ -26,15 +26,15 @@
   typedef std::_Base_bitset<6> bitset_base;
   constexpr bitset_base base = bitset_base();
 
-  constexpr auto r1 = base._M_getword(2);
+  constexpr auto r1 __attribute__((unused)) = base._M_getword(2);
   // constexpr auto r2 = base._M_getdata(); // error, pointer to this
-  auto r2 = base._M_getdata(); 
-  constexpr auto r3 = base._M_hiword();
+  auto r2 __attribute__((unused)) = base._M_getdata(); 
+  constexpr auto r3 __attribute__((unused)) = base._M_hiword();
 
   // bitset operators
   typedef std::bitset<6> bitset_type;
   constexpr bitset_type a = bitset_type();
-  constexpr auto v = a[0];
+  constexpr auto v __attribute__((unused)) = a[0];
 
   return 0;
 }
Index: testsuite/23_containers/array/at_neg.cc
===================================================================
--- testsuite/23_containers/array/at_neg.cc	(revision 178910)
+++ testsuite/23_containers/array/at_neg.cc	(working copy)
@@ -1,31 +0,0 @@
-// { dg-do run { xfail *-*-* } }
-// { dg-options "-std=gnu++0x" }
-
-// Copyright (C) 2011 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 Pred 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/>.
-
-#include <array>
-
-int main()
-{
-  // Expected behavior is to either throw and have the uncaught
-  // exception end up in a terminate handler which eventually exits,
-  // or abort. (Depending on -fno-exceptions.)
-  constexpr std::array<int, 3> a{{1, 2, 3}};
-  auto i = a.at(4); 
-  return 0;
-}
Index: testsuite/23_containers/array/cons/aggregate_initialization.cc
===================================================================
--- testsuite/23_containers/array/cons/aggregate_initialization.cc	(revision 0)
+++ testsuite/23_containers/array/cons/aggregate_initialization.cc	(revision 0)
@@ -0,0 +1,38 @@
+// { dg-options "-std=gnu++0x" }
+// { dg-do compile }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+
+void
+test01() 
+{ 
+  typedef std::array<int, 5> array_type;
+
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3 } };
+
+  a = b;
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/requirements/constexpr_functions.cc
===================================================================
--- testsuite/23_containers/array/requirements/constexpr_functions.cc	(revision 178910)
+++ testsuite/23_containers/array/requirements/constexpr_functions.cc	(working copy)
@@ -1,53 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++0x" }
-
-// Copyright (C) 2010, 2011 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/>.
-
-#include <array>
-
-namespace __gnu_test
-{
-  struct constexpr_member_functions
-  {
-    template<typename _Ttesttype>
-      void
-      operator()()
-      {
-	struct _Concept
-	{
-	  void __constraint()
-	  { 
-	    constexpr _Ttesttype a = { };
-	    constexpr auto v1 __attribute__((unused)) = a.size();
-	    constexpr auto v2 __attribute__((unused)) = a.max_size();
-	    constexpr auto v3 __attribute__((unused)) = a.empty();
-	  }
-	};
-
-	_Concept c;
-	c.__constraint();
-      }
-  };
-}
-
-int main()
-{
-  __gnu_test::constexpr_member_functions test;
-  test.operator()<std::array<long, 60>>();
-  return 0;
-}
Index: testsuite/23_containers/array/requirements/zero_sized_arrays.cc
===================================================================
--- testsuite/23_containers/array/requirements/zero_sized_arrays.cc	(revision 0)
+++ testsuite/23_containers/array/requirements/zero_sized_arrays.cc	(revision 0)
@@ -0,0 +1,59 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 0;
+  typedef std::array<int, len> array_type;
+
+  // 1: ?
+  array_type a = { };
+
+  // 2
+  array_type b;
+
+  // 3
+  // begin() == end()
+  VERIFY( a.begin() == a.end() );
+  VERIFY( b.begin() == b.end() );
+
+  // 4: ?
+  // begin() == end() == unique value.
+  {
+    typedef std::array<long, len> array_type1;
+    typedef std::array<char, len> array_type2;
+    array_type1 one;
+    array_type2 two;
+    void* v1 = one.begin();
+    void* v2 = two.begin();
+    VERIFY( v1 != v2 );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/requirements/get.cc
===================================================================
--- testsuite/23_containers/array/requirements/get.cc	(revision 178910)
+++ testsuite/23_containers/array/requirements/get.cc	(working copy)
@@ -1,31 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++0x" }
-
-// 2011-05-16  Paolo Carlini  <paolo.carlini@oracle.com>
-//
-// Copyright (C) 2011 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/>.
-
-#include <array>
-
-void test01()
-{
-  std::array<int, 2> a;
-
-  int&& aone __attribute__((unused)) = std::get<0>(std::move(a));
-  int&& atwo __attribute__((unused)) = std::get<1>(std::move(a));
-}
Index: testsuite/23_containers/array/requirements/constexpr_element_access.cc
===================================================================
--- testsuite/23_containers/array/requirements/constexpr_element_access.cc	(revision 178910)
+++ testsuite/23_containers/array/requirements/constexpr_element_access.cc	(working copy)
@@ -1,31 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++0x" }
-
-// Copyright (C) 2011 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/>.
-
-#include <array>
-
-int main()
-{
-  // array
-  typedef std::array<std::size_t, 6> array_type;
-  constexpr array_type a = { 0, 55, 66, 99, 4115, 2 };
-  constexpr auto v1 = a[1];
-  constexpr auto v2 = a.at(2);
-  return 0;
-}
Index: testsuite/23_containers/array/requirements/contiguous.cc
===================================================================
--- testsuite/23_containers/array/requirements/contiguous.cc	(revision 0)
+++ testsuite/23_containers/array/requirements/contiguous.cc	(revision 0)
@@ -0,0 +1,43 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+
+  // &a[n] == &a[0] + n for all 0 <= n < N.
+  for (size_t i = 0; i < len; ++i)
+    {
+      VERIFY( &a[i] == &a[0] + i );
+    }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/requirements/member_swap.cc
===================================================================
--- testsuite/23_containers/array/requirements/member_swap.cc	(revision 0)
+++ testsuite/23_containers/array/requirements/member_swap.cc	(revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  const array_type a_ref = a;
+
+  array_type b = { { 4, 3, 2, 1, 0 } };
+  const array_type b_ref = b;
+
+  a.swap(b);
+  VERIFY( a == b_ref );
+  VERIFY( b == a_ref );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/specialized_algorithms/swap.cc
===================================================================
--- testsuite/23_containers/array/specialized_algorithms/swap.cc	(revision 0)
+++ testsuite/23_containers/array/specialized_algorithms/swap.cc	(revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  const array_type a_ref = a;
+
+  array_type b = { { 4, 3, 2, 1, 0 } };
+  const array_type b_ref = b;
+
+  std::swap(a, b);
+  VERIFY( a == b_ref );
+  VERIFY( b == a_ref );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/constexpr_get.cc
===================================================================
--- testsuite/23_containers/array/constexpr_get.cc	(revision 178910)
+++ testsuite/23_containers/array/constexpr_get.cc	(working copy)
@@ -1,30 +0,0 @@
-// { dg-options "-std=gnu++0x" }
-// { dg-do compile }
-
-// Copyright (C) 2011 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 <array>
-
-std::array<int, 5> ai;
-const std::array<int, 5> cai(ai);
-
-constexpr const int& cri = std::get<0>(cai);
-constexpr int&  ri = std::get<0>(ai);
-constexpr int&& rri = std::get<0>(std::move(ai));
Index: testsuite/23_containers/array/comparison_operators/less_or_equal.cc
===================================================================
--- testsuite/23_containers/array/comparison_operators/less_or_equal.cc	(revision 0)
+++ testsuite/23_containers/array/comparison_operators/less_or_equal.cc	(revision 0)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  bool test __attribute__((unused)) = true;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3, 4 } };
+  array_type c = { { 0, 1, 2, 3, 7 } };
+
+  VERIFY( a <= b );
+  VERIFY( a <= c );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/comparison_operators/greater_or_equal.cc
===================================================================
--- testsuite/23_containers/array/comparison_operators/greater_or_equal.cc	(revision 0)
+++ testsuite/23_containers/array/comparison_operators/greater_or_equal.cc	(revision 0)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  bool test __attribute__((unused)) = true;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3, 4 } };
+  array_type c = { { 0, 1, 2, 3, 7 } };
+
+  VERIFY( a >= b );
+  VERIFY( c >= a );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/comparison_operators/less.cc
===================================================================
--- testsuite/23_containers/array/comparison_operators/less.cc	(revision 0)
+++ testsuite/23_containers/array/comparison_operators/less.cc	(revision 0)
@@ -0,0 +1,42 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2004, 2005, 2006, 2007, 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  bool test __attribute__((unused)) = true;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3, 4 } };
+  array_type c = { { 0, 1, 2, 3, 7 } };
+
+  VERIFY( !(a < b) );
+  VERIFY( a < c );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/comparison_operators/equal.cc
===================================================================
--- testsuite/23_containers/array/comparison_operators/equal.cc	(revision 0)
+++ testsuite/23_containers/array/comparison_operators/equal.cc	(revision 0)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  bool test __attribute__((unused)) = true;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3, 4 } };
+  array_type c = { { 0, 1, 2, 3 } };
+
+  VERIFY( a == b );
+  VERIFY( !(a == c) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/comparison_operators/not_equal.cc
===================================================================
--- testsuite/23_containers/array/comparison_operators/not_equal.cc	(revision 0)
+++ testsuite/23_containers/array/comparison_operators/not_equal.cc	(revision 0)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  bool test __attribute__((unused)) = true;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3, 4 } };
+  array_type c = { { 0, 1, 2, 3 } };
+
+  VERIFY( !(a != b) );
+  VERIFY( a != c );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/comparison_operators/greater.cc
===================================================================
--- testsuite/23_containers/array/comparison_operators/greater.cc	(revision 0)
+++ testsuite/23_containers/array/comparison_operators/greater.cc	(revision 0)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  bool test __attribute__((unused)) = true;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+  array_type b = { { 0, 1, 2, 3, 4 } };
+  array_type c = { { 0, 1, 2, 3, 7 } };
+
+  VERIFY( !(a > b) );
+  VERIFY( c > a );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/tuple_interface/tuple_element.cc
===================================================================
--- testsuite/23_containers/array/tuple_interface/tuple_element.cc	(revision 0)
+++ testsuite/23_containers/array/tuple_interface/tuple_element.cc	(revision 0)
@@ -0,0 +1,49 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <type_traits>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+  using namespace std;
+
+  {
+    const size_t len = 3;
+    typedef array<int, len> array_type;
+    VERIFY( (is_same<tuple_element<0, array_type>::type, int>::value == true) );
+    VERIFY( (is_same<tuple_element<1, array_type>::type, int>::value == true) );
+    VERIFY( (is_same<tuple_element<2, array_type>::type, int>::value == true) );
+  }
+
+  {
+    const size_t len = 0;
+    typedef array<int, len> array_type;
+    VERIFY( (is_same<tuple_element<0, array_type>::type, int>::value == true) );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/tuple_interface/tuple_size.cc
===================================================================
--- testsuite/23_containers/array/tuple_interface/tuple_size.cc	(revision 0)
+++ testsuite/23_containers/array/tuple_interface/tuple_size.cc	(revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+  using namespace std;
+
+  {
+    const size_t len = 5;
+    typedef array<int, len> array_type;
+    VERIFY( tuple_size<array_type>::value == 5 );
+  }
+
+  {
+    const size_t len = 0;
+    typedef array<float, len> array_type;
+    VERIFY( tuple_size<array_type>::value == 0 );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/element_access/at_out_of_range.cc
===================================================================
--- testsuite/23_containers/array/element_access/at_out_of_range.cc	(revision 0)
+++ testsuite/23_containers/array/element_access/at_out_of_range.cc	(revision 0)
@@ -0,0 +1,54 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+
+  try
+    {
+      a.at(len);
+      VERIFY( false );
+    }
+  catch(std::out_of_range& obj)
+    {
+      // Expected.
+      VERIFY( true );
+    }
+  catch(...)
+    {
+      // Failed.
+      VERIFY( false );
+    }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/element_access/at_neg.cc
===================================================================
--- testsuite/23_containers/array/element_access/at_neg.cc	(revision 0)
+++ testsuite/23_containers/array/element_access/at_neg.cc	(working copy)
@@ -26,6 +26,6 @@
   // exception end up in a terminate handler which eventually exits,
   // or abort. (Depending on -fno-exceptions.)
   constexpr std::array<int, 3> a{{1, 2, 3}};
-  auto i = a.at(4); 
+  auto i __attribute__((unused)) = a.at(4); 
   return 0;
 }
Index: testsuite/23_containers/array/element_access/constexpr_element_access.cc
===================================================================
--- testsuite/23_containers/array/element_access/constexpr_element_access.cc	(revision 0)
+++ testsuite/23_containers/array/element_access/constexpr_element_access.cc	(working copy)
@@ -24,8 +24,8 @@
 {
   // array
   typedef std::array<std::size_t, 6> array_type;
-  constexpr array_type a = { 0, 55, 66, 99, 4115, 2 };
-  constexpr auto v1 = a[1];
-  constexpr auto v2 = a.at(2);
+  constexpr array_type a = { { 0, 55, 66, 99, 4115, 2 } };
+  constexpr auto v1 __attribute__((unused)) = a[1];
+  constexpr auto v2 __attribute__((unused)) = a.at(2);
   return 0;
 }
Index: testsuite/23_containers/array/element_access/back.cc
===================================================================
--- testsuite/23_containers/array/element_access/back.cc	(revision 0)
+++ testsuite/23_containers/array/element_access/back.cc	(revision 0)
@@ -0,0 +1,48 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+
+  {
+    array_type a = { { 0, 1, 2, 3, 4 } };
+    int& ri = a.back();
+    VERIFY( ri == 4 );
+  }
+
+  {
+    const array_type ca = { { 4, 3, 2, 1, 0 } };
+    const int& cri = ca.back();
+    VERIFY( cri == 0 );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/element_access/front.cc
===================================================================
--- testsuite/23_containers/array/element_access/front.cc	(revision 0)
+++ testsuite/23_containers/array/element_access/front.cc	(revision 0)
@@ -0,0 +1,48 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+
+  {
+    array_type a = { { 0, 1, 2, 3, 4 } };
+    int& ri = a.front();
+    VERIFY( ri == 0 );
+  }
+
+  {
+    const array_type ca = { { 4, 3, 2, 1, 0 } };
+    const int& cri = ca.front();
+    VERIFY( cri == 4 );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/element_access/data.cc
===================================================================
--- testsuite/23_containers/array/element_access/data.cc	(revision 0)
+++ testsuite/23_containers/array/element_access/data.cc	(revision 0)
@@ -0,0 +1,48 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+
+  {
+    array_type a = { { 0, 1, 2, 3, 4 } };
+    int* pi = a.data();
+    VERIFY( *pi == 0 );
+  }
+
+  {
+    const array_type ca = { { 4, 3, 2, 1, 0 } };
+    const int* pci = ca.data();
+    VERIFY( *pci == 4 );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/iterators/end_is_one_past.cc
===================================================================
--- testsuite/23_containers/array/iterators/end_is_one_past.cc	(revision 0)
+++ testsuite/23_containers/array/iterators/end_is_one_past.cc	(revision 0)
@@ -0,0 +1,42 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  bool test __attribute__((unused)) = true;
+
+  const size_t len = 5;
+  typedef std::array<int, len> array_type;
+  array_type a = { { 0, 1, 2, 3, 4 } };
+
+  array_type::iterator b = a.begin();
+  array_type::iterator e = a.end();
+
+  VERIFY( e != (b + a.size() - 1) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/capacity/empty.cc
===================================================================
--- testsuite/23_containers/array/capacity/empty.cc	(revision 0)
+++ testsuite/23_containers/array/capacity/empty.cc	(revision 0)
@@ -0,0 +1,51 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  {
+    bool test __attribute__((unused)) = true;
+
+    const size_t len = 5;
+    typedef std::array<int, len> array_type;
+    array_type a = { { 0, 1, 2, 3, 4 } };
+
+    VERIFY( a.empty() == false );
+  }
+
+  {
+    bool test __attribute__((unused)) = true;
+
+    const size_t len = 0;
+    typedef std::array<int, len> array_type;
+    array_type a;
+
+    VERIFY( a.empty() == true );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/capacity/max_size.cc
===================================================================
--- testsuite/23_containers/array/capacity/max_size.cc	(revision 0)
+++ testsuite/23_containers/array/capacity/max_size.cc	(revision 0)
@@ -0,0 +1,51 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  {
+    bool test __attribute__((unused)) = true;
+
+    const size_t len = 5;
+    typedef std::array<int, len> array_type;
+    array_type a = { { 0, 1, 2, 3, 4 } };
+
+    VERIFY( a.max_size() == len );
+  }
+
+  {
+    bool test __attribute__((unused)) = true;
+
+    const size_t len = 0;
+    typedef std::array<int, len> array_type;
+    array_type a;
+
+    VERIFY( a.max_size() == len );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/23_containers/array/capacity/size.cc
===================================================================
--- testsuite/23_containers/array/capacity/size.cc	(revision 0)
+++ testsuite/23_containers/array/capacity/size.cc	(revision 0)
@@ -0,0 +1,51 @@
+// { dg-options "-std=gnu++0x" }
+//
+// Copyright (C) 2011 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/>.
+
+#include <array>
+#include <testsuite_hooks.h>
+
+void
+test01() 
+{
+  {
+    bool test __attribute__((unused)) = true;
+
+    const size_t len = 5;
+    typedef std::array<int, len> array_type;
+    array_type a = { { 0, 1, 2, 3, 4 } };
+
+    VERIFY( a.size() == len );
+  }
+
+  {
+    bool test __attribute__((unused)) = true;
+
+    const size_t len = 0;
+    typedef std::array<int, len> array_type;
+    array_type a;
+
+    VERIFY( a.size() == len );
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
Index: testsuite/20_util/duration/cons/1_neg.cc
===================================================================
--- testsuite/20_util/duration/cons/1_neg.cc	(revision 178910)
+++ testsuite/20_util/duration/cons/1_neg.cc	(working copy)
@@ -2,7 +2,7 @@
 // { dg-options "-std=gnu++0x" }
 // { dg-require-cstdint "" }
 
-// Copyright (C) 2008, 2009 Free Software Foundation
+// Copyright (C) 2008, 2009, 2010, 2011 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
@@ -38,3 +38,7 @@
   duration<int, std::milli> d2_copy(d2); // { dg-error "no matching|no type" }
 }
 
+// { dg-prune-output "include" }
+
+// Discard a bogus warning showing up with -Wall.
+// { dg-prune-output "suggest parentheses around" }
Index: testsuite/20_util/tuple/creation_functions/constexpr.cc
===================================================================
--- testsuite/20_util/tuple/creation_functions/constexpr.cc	(revision 178910)
+++ testsuite/20_util/tuple/creation_functions/constexpr.cc	(working copy)
@@ -34,12 +34,14 @@
 {
   {
     typedef std::tuple<int, float> tuple_type;
-    constexpr tuple_type p1 = std::make_tuple(22, 22.222);
+    constexpr tuple_type p1 __attribute__((unused))
+      = std::make_tuple(22, 22.222);
   }
 
   {
     typedef std::tuple<int, float, int> tuple_type;
-    constexpr tuple_type p1 = std::make_tuple(22, 22.222, 77799);
+    constexpr tuple_type p1 __attribute__((unused))
+      = std::make_tuple(22, 22.222, 77799);
   }
 }
 
@@ -50,13 +52,15 @@
   {
     typedef std::tuple<int, float> tuple_type;
     constexpr tuple_type t1 { 55, 77.77 };
-    constexpr auto var = std::get<1>(t1);
+    constexpr auto var __attribute__((unused))
+      = std::get<1>(t1);
   }
 
   {
     typedef std::tuple<int, float, int> tuple_type;
     constexpr tuple_type t1 { 55, 77.77, 99 };
-    constexpr auto var = std::get<2>(t1);
+    constexpr auto var __attribute__((unused))
+      = std::get<2>(t1);
   }
 }
 
@@ -69,7 +73,7 @@
 
   constexpr tuple_type1 t1 { 55, 77.77 };
   constexpr tuple_type2 t2 { 55, 99, 77.77 };
-  constexpr auto cat1 = std::tuple_cat(t1, t2);
+  constexpr auto cat1 __attribute__((unused)) = std::tuple_cat(t1, t2);
 }
 
 int
Index: testsuite/20_util/pair/make_pair/constexpr.cc
===================================================================
--- testsuite/20_util/pair/make_pair/constexpr.cc	(revision 178910)
+++ testsuite/20_util/pair/make_pair/constexpr.cc	(working copy)
@@ -18,7 +18,6 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-
 // NOTE: This makes use of the fact that we know how moveable
 // is implemented on pair, and also vector. If the implementation 
 // changes this test may begin to fail.
@@ -31,7 +30,7 @@
 {
   bool test __attribute__((unused)) = true;
   typedef std::pair<int, float> pair_type;
-  constexpr pair_type p1 = std::make_pair(22, 22.222);
+  constexpr pair_type p1 __attribute__((unused)) = std::make_pair(22, 22.222);
 }
 
 int 
Index: testsuite/20_util/time_point/nonmember/constexpr.cc
===================================================================
--- testsuite/20_util/time_point/nonmember/constexpr.cc	(revision 178910)
+++ testsuite/20_util/time_point/nonmember/constexpr.cc	(working copy)
@@ -35,11 +35,11 @@
   constexpr duration<int> d0(12);
   constexpr duration<int> d1(3);
 
-  constexpr auto r1 = t1 + d0;
-  constexpr auto r2 = d1 + t2;
+  constexpr auto r1 __attribute__((unused)) = t1 + d0;
+  constexpr auto r2 __attribute__((unused)) = d1 + t2;
 
-  constexpr auto r3 = t1 - d0;
-  constexpr auto r4 = t2 - t3;
+  constexpr auto r3 __attribute__((unused)) = t1 - d0;
+  constexpr auto r4 __attribute__((unused)) = t2 - t3;
 
   return 0;
 }
Index: testsuite/20_util/forward/1_neg.cc
===================================================================
--- testsuite/20_util/forward/1_neg.cc	(revision 178910)
+++ testsuite/20_util/forward/1_neg.cc	(working copy)
@@ -41,3 +41,5 @@
   std::shared_ptr<A> sp1 = factory<A>(2, 1.414); // { dg-error "required from here" }
 }
 
+// Discard a bogus warning showing up with -Wall.
+// { dg-prune-output "control reaches end of" }
