Implement C++11 <codecvt> header.

	* config/abi/pre/gnu.ver: Export new symbols.
	* include/Makefile.am: Add codecvt.
	* include/Makefile.in: Regenerate.
	* include/std/codecvt: New header.
	* src/c++11/codecvt.cc (__codecvt_utf8_base, __codecvt_utf16_base,
	__codecvt_utf8_utf16_base): Define specializations.
	* testsuite/22_locale/codecvt/codecvt_utf8/requirements/1.cc: New.
	* testsuite/22_locale/codecvt/codecvt_utf16/requirements/1.cc: New.
	* testsuite/22_locale/codecvt/codecvt_utf8_utf16/requirements/1.cc:
	New.

From-SVN: r219779

1 files changed, 37 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8_utf16/requirements/1.cc b/libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8_utf16/requirements/1.cc
new file mode 100644
index 00000000000..5e5f8dd9fee
--- /dev/null
+++ b/libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8_utf16/requirements/1.cc
@@ -0,0 +1,37 @@
+// 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-require-cstdint "" }
+// { dg-options "-std=gnu++11" }
+// { dg-do compile }
+
+#include <codecvt>
+#include <type_traits>
+#include <testsuite_hooks.h>
+
+template<typename C>
+  using codecvt = std::codecvt<C, char, std::mbstate_t>;
+
+using std::is_base_of;
+
+static_assert(
+    is_base_of<codecvt<char16_t>, std::codecvt_utf8_utf16<char16_t>>::value,
+    "codecvt_utf8_utf16<char16_t> has wrong base class");
+
+static_assert(
+    is_base_of<codecvt<char32_t>, std::codecvt_utf8_utf16<char32_t>>::value,
+    "codecvt_utf8_utf16<char32_t> has wrong base class");