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[v3] Add variadic construct to the allocators (in C++0x mode)
- From: Paolo Carlini <pcarlini at suse dot de>
- To: Gcc Patch List <gcc-patches at gcc dot gnu dot org>
- Date: Sat, 27 Oct 2007 02:42:59 +0200
- Subject: [v3] Add variadic construct to the allocators (in C++0x mode)
Hi,
tested x86_64-linux, committed to mainline.
Paolo.
//////////////////////
2007-10-26 Paolo Carlini <pcarlini@suse.de>
* include/ext/throw_allocator.h (throw_allocator<>::
construct<>(pointer, _Args&&...)): Add.
* include/ext/pool_allocator.h (__pool_alloc<>::
construct<>(pointer, _Args&&...)): Likewise.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* include/ext/bitmap_allocator.h (bitmap_allocator<>::
construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* include/ext/new_allocator.h (new_allocator<>::
construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* include/ext/malloc_allocator.h (malloc_allocator<>::
construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* include/ext/array_allocator.h (array_allocator<>::
construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* include/ext/mt_allocator.h (__mt_alloc<>::
construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* testsuite/util/testsuite_allocator.h (tracker_allocator<>::
construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
(uneq_allocator<>::construct<>(pointer, _Args&&...)): Add.
(construct(pointer, const _Tp&)): Cast pointer to void*.
* testsuite/ext/mt_allocator/variadic_construct.cc: New.
* testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
* testsuite/ext/throw_allocator/variadic_construct.cc: Likewise.
* testsuite/ext/malloc_allocator/variadic_construct.cc: Likewise.
* testsuite/ext/pool_allocator/variadic_construct.cc: Likewise.
* testsuite/ext/bitmap_allocator/variadic_construct.cc: Likewise.
* testsuite/ext/array_allocator/variadic_construct.cc: Likewise.
Index: include/ext/throw_allocator.h
===================================================================
--- include/ext/throw_allocator.h (revision 129657)
+++ include/ext/throw_allocator.h (working copy)
@@ -60,6 +60,7 @@
#include <utility>
#include <tr1/random>
#include <bits/functexcept.h>
+#include <bits/stl_move.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
@@ -232,6 +233,16 @@
construct(pointer __p, const T& val)
{ return std::allocator<value_type>().construct(__p, val); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ {
+ return std::allocator<value_type>().
+ construct(__p, std::forward<_Args>(__args)...);
+ }
+#endif
+
void
destroy(pointer __p)
{ std::allocator<value_type>().destroy(__p); }
Index: include/ext/pool_allocator.h
===================================================================
--- include/ext/pool_allocator.h (revision 129657)
+++ include/ext/pool_allocator.h (working copy)
@@ -54,6 +54,7 @@
#include <bits/functexcept.h>
#include <ext/atomicity.h>
#include <ext/concurrence.h>
+#include <bits/stl_move.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
@@ -164,7 +165,14 @@
// 402. wrong new expression in [some_] allocator::construct
void
construct(pointer __p, const _Tp& __val)
- { ::new(__p) _Tp(__val); }
+ { ::new((void *)__p) _Tp(__val); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
+#endif
void
destroy(pointer __p) { __p->~_Tp(); }
Index: include/ext/bitmap_allocator.h
===================================================================
--- include/ext/bitmap_allocator.h (revision 129657)
+++ include/ext/bitmap_allocator.h (working copy)
@@ -1,6 +1,6 @@
// Bitmap Allocator. -*- C++ -*-
-// Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+// Copyright (C) 2004, 2005, 2006, 2007 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
@@ -41,7 +41,7 @@
#include <new> // For operator new.
#include <debug/debug.h> // _GLIBCXX_DEBUG_ASSERT
#include <ext/concurrence.h>
-
+#include <bits/stl_move.h>
/** @brief The constant in the expression below is the alignment
* required in bytes.
@@ -1089,7 +1089,14 @@
void
construct(pointer __p, const_reference __data)
- { ::new(__p) value_type(__data); }
+ { ::new((void *)__p) value_type(__data); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
+#endif
void
destroy(pointer __p)
Index: include/ext/new_allocator.h
===================================================================
--- include/ext/new_allocator.h (revision 129657)
+++ include/ext/new_allocator.h (working copy)
@@ -36,6 +36,7 @@
#include <new>
#include <bits/functexcept.h>
+#include <bits/stl_move.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
@@ -104,7 +105,14 @@
// 402. wrong new expression in [some_] allocator::construct
void
construct(pointer __p, const _Tp& __val)
- { ::new(__p) _Tp(__val); }
+ { ::new((void *)__p) _Tp(__val); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
+#endif
void
destroy(pointer __p) { __p->~_Tp(); }
Index: include/ext/malloc_allocator.h
===================================================================
--- include/ext/malloc_allocator.h (revision 129657)
+++ include/ext/malloc_allocator.h (working copy)
@@ -1,6 +1,6 @@
// Allocator that wraps "C" malloc -*- C++ -*-
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
@@ -38,6 +38,7 @@
#include <cstdlib>
#include <new>
#include <bits/functexcept.h>
+#include <bits/stl_move.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
@@ -109,7 +110,14 @@
// 402. wrong new expression in [some_] allocator::construct
void
construct(pointer __p, const _Tp& __val)
- { ::new(__p) value_type(__val); }
+ { ::new((void *)__p) value_type(__val); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
+#endif
void
destroy(pointer __p) { __p->~_Tp(); }
Index: include/ext/array_allocator.h
===================================================================
--- include/ext/array_allocator.h (revision 129657)
+++ include/ext/array_allocator.h (working copy)
@@ -1,6 +1,6 @@
// array allocator -*- C++ -*-
-// Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+// Copyright (C) 2004, 2005, 2006, 2007 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
@@ -38,6 +38,7 @@
#include <new>
#include <bits/functexcept.h>
#include <tr1/array>
+#include <bits/stl_move.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
@@ -77,7 +78,14 @@
// 402. wrong new expression in [some_] allocator::construct
void
construct(pointer __p, const _Tp& __val)
- { ::new(__p) value_type(__val); }
+ { ::new((void *)__p) value_type(__val); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
+#endif
void
destroy(pointer __p) { __p->~_Tp(); }
Index: include/ext/mt_allocator.h
===================================================================
--- include/ext/mt_allocator.h (revision 129657)
+++ include/ext/mt_allocator.h (working copy)
@@ -1,6 +1,6 @@
// MT-optimized allocator -*- C++ -*-
-// Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+// Copyright (C) 2003, 2004, 2005, 2006, 2007 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
@@ -38,6 +38,7 @@
#include <cstdlib>
#include <bits/functexcept.h>
#include <ext/atomicity.h>
+#include <bits/stl_move.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
@@ -593,7 +594,14 @@
// 402. wrong new expression in [some_] allocator::construct
void
construct(pointer __p, const _Tp& __val)
- { ::new(__p) _Tp(__val); }
+ { ::new((void *)__p) _Tp(__val); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... _Args>
+ void
+ construct(pointer __p, _Args&&... __args)
+ { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
+#endif
void
destroy(pointer __p) { __p->~_Tp(); }
Index: testsuite/ext/mt_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/mt_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/mt_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-26 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/mt_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ __gnu_cxx::__mt_alloc<pair_type> alloc1;
+
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/ext/new_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/new_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/new_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-26 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/new_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ __gnu_cxx::new_allocator<pair_type> alloc1;
+
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/ext/throw_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/throw_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/throw_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-26 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/throw_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ __gnu_cxx::throw_allocator<pair_type> alloc1;
+
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/ext/malloc_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/malloc_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/malloc_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-26 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/malloc_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ __gnu_cxx::malloc_allocator<pair_type> alloc1;
+
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/ext/pool_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/pool_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/pool_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-26 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/pool_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ __gnu_cxx::__pool_alloc<pair_type> alloc1;
+
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/ext/bitmap_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/bitmap_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/bitmap_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-26 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/bitmap_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ __gnu_cxx::bitmap_allocator<pair_type> alloc1;
+
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/ext/array_allocator/variadic_construct.cc
===================================================================
--- testsuite/ext/array_allocator/variadic_construct.cc (revision 0)
+++ testsuite/ext/array_allocator/variadic_construct.cc (revision 0)
@@ -0,0 +1,50 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-27 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2007 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 2, 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 COPYING. If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 20.4.1.1 allocator members
+
+#include <ext/array_allocator.h>
+#include <utility>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ typedef std::pair<int, char> pair_type;
+ typedef std::tr1::array<pair_type, 3> array_type;
+ array_type store;
+
+ __gnu_cxx::array_allocator<pair_type, array_type> alloc1(&store);
+ pair_type* ptp1 = alloc1.allocate(1);
+ alloc1.construct(ptp1, 3, 'a');
+
+ VERIFY( ptp1->first == 3 );
+ VERIFY( ptp1->second == 'a' );
+
+ alloc1.deallocate(ptp1, 1);
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
Index: testsuite/util/testsuite_allocator.h
===================================================================
--- testsuite/util/testsuite_allocator.h (revision 129657)
+++ testsuite/util/testsuite_allocator.h (working copy)
@@ -39,6 +39,7 @@
#include <cstddef>
#include <tr1/unordered_map>
#include <cassert>
+#include <bits/stl_move.h>
namespace
{
@@ -153,10 +154,20 @@
void
construct(pointer p, const T& value)
{
- new (p) T(value);
+ ::new ((void *)p) T(value);
counter_type::construct();
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... Args>
+ void
+ construct(pointer p, Args&&... args)
+ {
+ ::new((void *)p) T(std::forward<Args>(args)...);
+ counter_type::construct();
+ }
+#endif
+
void
destroy(pointer p)
{
@@ -338,8 +349,15 @@
void
construct(pointer p, const Tp& val)
- { ::new(p) Tp(val); }
-
+ { ::new((void *)p) Tp(val); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename... Args>
+ void
+ construct(pointer p, Args&&... args)
+ { ::new((void *)p) Tp(std::forward<Args>(args)...); }
+#endif
+
void
destroy(pointer p) { p->~Tp(); }