re PR libstdc++/65631 (seed_seq should not be copyable)

	PR libstdc++/65631
	* include/bits/random.h (seed_seq) Define copy constructor and copy
	assignment as deleted.
	* testsuite/26_numerics/random/seed_seq/cons/65631.cc: New.

From-SVN: r222524

libstdc++-v3/ChangeLog

 2015-04-28  Jonathan Wakely  <jwakely@redhat.com>
 
+	PR libstdc++/65631
+	* include/bits/random.h (seed_seq) Define copy constructor and copy
+	assignment as deleted.
+	* testsuite/26_numerics/random/seed_seq/cons/65631.cc: New.
+
 	* libsupc++/exception (uncaught_exceptions): Add comment. Reorder #if.
 	* testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
 	Use -std=gnu++1z. Check feature-test macro.

libstdc++-v3/include/bits/random.h

@@ -6053,6 +6053,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       param(OutputIterator __dest) const
       { std::copy(_M_v.begin(), _M_v.end(), __dest); }
 
+    // no copy functions
+    seed_seq(const seed_seq&) = delete;
+    seed_seq& operator=(const seed_seq&) = delete;
+
   private:
     ///
     std::vector<result_type> _M_v;

libstdc++-v3/testsuite/26_numerics/random/seed_seq/cons/65631.cc

+// 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" }
+// { dg-do compile }
+
+#include <random>
+#include <type_traits>
+
+static_assert( !std::is_copy_constructible<std::seed_seq>::value,
+    "seed_seq is not copy constructible" );
+
+static_assert( !std::is_copy_assignable<std::seed_seq>::value,
+    "seed_seq is not copy assignable" );