[patch] Add std::raw_storage_iterator::base() member

[Jonathan Wakely]

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4383.html#2454

Voted into the WP in Lenexa.

Tested powerpc64le-linux, committed to trunk.

commit 8cb30e1ad50f1bb277c635d83796c64772b61d68
Author: redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Wed May 13 13:54:46 2015 +0000

    	* include/bits/stl_raw_storage_iter.h (raw_storage_iterator::base()):
    	Define (LWG 2454).
    	* testsuite/20_util/raw_storage_iterator/base.cc: New.
    
    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223162 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/libstdc++-v3/include/bits/stl_raw_storage_iter.h b/libstdc++-v3/include/bits/stl_raw_storage_iter.h
index 2ce83ff..fc9019c 100644
--- a/libstdc++-v3/include/bits/stl_raw_storage_iter.h
+++ b/libstdc++-v3/include/bits/stl_raw_storage_iter.h
@@ -100,6 +100,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	++_M_iter;
 	return __tmp;
       }
+
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 2454. Add raw_storage_iterator::base() member
+      _OutputIterator base() const { return _M_iter; }
     };
 
 _GLIBCXX_END_NAMESPACE_VERSION
diff --git a/libstdc++-v3/testsuite/20_util/raw_storage_iterator/base.cc b/libstdc++-v3/testsuite/20_util/raw_storage_iterator/base.cc
new file mode 100644
index 0000000..f6429bd
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/raw_storage_iterator/base.cc
@@ -0,0 +1,36 @@
+// Copyright (C) 2015 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++11" }
+
+#include <memory>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  int a[2];
+  auto it = std::raw_storage_iterator<int*, int>(a);
+  VERIFY( it.base() == a );
+  VERIFY( (++it).base() == a+1 );
+}
+
+int
+main()
+{
+  test01();
+}