re PR libstdc++/37986 (std::tr1::variate_generator does not conform to TR1.)

2008-11-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/37986
	* include/tr1_impl/random (struct _Adaptor): Use remove_pointer
	and remove_reference on _Engine.
	* testsuite/tr1/5_numerical_facilities/random/variate_generator/
	37986.cc: New.

From-SVN: r141769

libstdc++-v3/ChangeLog

 2008-11-11  Paolo Carlini  <paolo.carlini@oracle.com>
 
+	PR libstdc++/37986
+	* include/tr1_impl/random (struct _Adaptor): Use remove_pointer
+	and remove_reference on _Engine.
+	* testsuite/tr1/5_numerical_facilities/random/variate_generator/
+	37986.cc: New.
+
+2008-11-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
 	* testsuite/ext/ext_pointer/1_neg.cc: Adjust dg-error line numbers.
 
 2008-11-11  Paolo Carlini  <paolo.carlini@oracle.com>

libstdc++-v3/include/tr1_impl/random

@@ -79,7 +79,10 @@ _GLIBCXX_BEGIN_NAMESPACE_TR1
     template<typename _Engine, typename _Distribution>
       struct _Adaptor
       { 
-	typedef typename _Engine::result_type        _Engine_result_type;
+	typedef typename remove_reference<
+	  typename remove_pointer<_Engine>::type>::type _BEngine;
+
+	typedef typename _BEngine::result_type       _Engine_result_type;
 	typedef typename _Distribution::input_type   result_type;
 
       public:

libstdc++-v3/testsuite/tr1/5_numerical_facilities/random/variate_generator/37986.cc

+// { dg-do compile }
+//
+// Copyright (C) 2008 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.
+
+// 5.1.3 class template variate_generator
+
+#include <tr1/random>
+
+// libtsdc++/37986
+void test01()
+{
+  std::tr1::mt19937 mt;
+  std::tr1::uniform_real<double> dist;
+
+  std::tr1::variate_generator<
+    std::tr1::mt19937,
+    std::tr1::uniform_real<double>
+    > g1(mt, dist);
+
+  std::tr1::variate_generator<
+    std::tr1::mt19937&,
+    std::tr1::uniform_real<double>
+    > g2(mt, dist);
+
+  std::tr1::variate_generator<
+    std::tr1::mt19937*,
+    std::tr1::uniform_real<double>
+    > g3(&mt, dist);
+}