hashtable (_Hashtable<>::cbegin(size_type), [...]): Add per DR 691.

2008-06-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/tr1_impl/hashtable (_Hashtable<>::cbegin(size_type),
	cend(size_type)): Add per DR 691. 
	* testsuite/23_containers/unordered_map/requirements/cliterators.cc:
	New.
	* testsuite/23_containers/unordered_multimap/requirements/
	cliterators.cc: Likewise.
	* testsuite/23_containers/unordered_set/requirements/cliterators.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/requirements/
	cliterators.cc: Likewise.
	* doc/xml/manual/intro.xml: Add an entry for DR 691.

From-SVN: r136685

7 files changed, 248 insertions, 4 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index d02d1ae..94cbefa 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,17 @@
+2008-06-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* include/tr1_impl/hashtable (_Hashtable<>::cbegin(size_type),
+	cend(size_type)): Add per DR 691. 
+	* testsuite/23_containers/unordered_map/requirements/cliterators.cc:
+	New.
+	* testsuite/23_containers/unordered_multimap/requirements/
+	cliterators.cc: Likewise.
+	* testsuite/23_containers/unordered_set/requirements/cliterators.cc:
+	Likewise.
+	* testsuite/23_containers/unordered_multiset/requirements/
+	cliterators.cc: Likewise.
+	* doc/xml/manual/intro.xml: Add an entry for DR 691.
+
 2008-06-11  Matthias Klose  <doko@ubuntu.com>
 
 	* testsuite/30_threads/lock_error, testsuite/30_threads/once_flag:
diff --git a/libstdc++-v3/doc/xml/manual/intro.xml b/libstdc++-v3/doc/xml/manual/intro.xml
index 1f6708d..309871b 100644
--- a/libstdc++-v3/doc/xml/manual/intro.xml
+++ b/libstdc++-v3/doc/xml/manual/intro.xml
@@ -635,6 +635,13 @@
     <listitem><para>Add the missing operations.
     </para></listitem></varlistentry>
 
+    <varlistentry><term><ulink url="../ext/lwg-active.html#691">691</ulink>:
+        <emphasis>const_local_iterator cbegin, cend missing from TR1</emphasis>
+    </term>
+    <listitem><para>In C++0x mode add cbegin(size_type) and cend(size_type)
+	            to the unordered containers.
+    </para></listitem></varlistentry>
+
     <varlistentry><term><ulink url="../ext/lwg-defects.html#693">693</ulink>:
         <emphasis>std::bitset::all() missing</emphasis>
     </term>
diff --git a/libstdc++-v3/include/tr1_impl/hashtable b/libstdc++-v3/include/tr1_impl/hashtable
index 9a3ecbd..55056ef 100644
--- a/libstdc++-v3/include/tr1_impl/hashtable
+++ b/libstdc++-v3/include/tr1_impl/hashtable
@@ -1,6 +1,6 @@
 // Internal header for TR1 unordered_set and unordered_map -*- C++ -*-
 
-// Copyright (C) 2007 Free Software Foundation, Inc.
+// Copyright (C) 2007, 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
@@ -326,19 +326,30 @@ _GLIBCXX_BEGIN_NAMESPACE_TR1
       local_iterator
       begin(size_type __n)
       { return local_iterator(_M_buckets[__n]); }
-  
+
       local_iterator
       end(size_type)
       { return local_iterator(0); }
-  
+
       const_local_iterator
       begin(size_type __n) const
       { return const_local_iterator(_M_buckets[__n]); }
-  
+
       const_local_iterator
       end(size_type) const
       { return const_local_iterator(0); }
 
+#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
+      // DR 691.
+      const_local_iterator
+      cbegin(size_type __n) const
+      { return const_local_iterator(_M_buckets[__n]); }
+
+      const_local_iterator
+      cend(size_type) const
+      { return const_local_iterator(0); }
+#endif
+
       float
       load_factor() const
       { 
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_map/requirements/cliterators.cc b/libstdc++-v3/testsuite/23_containers/unordered_map/requirements/cliterators.cc
new file mode 100644
index 0000000..1699a2b
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/unordered_map/requirements/cliterators.cc
@@ -0,0 +1,53 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2008-06-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#include <unordered_map>
+#include <testsuite_hooks.h>
+
+// DR 691.
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef std::unordered_map<int, int> um_type;
+  um_type um;
+  um[1] = 1;
+  VERIFY( um.cbegin(0) == um.begin(0) );
+  VERIFY( um.cend(0) == um.end(0) );
+  const um_type::size_type bn = um.bucket(1);
+  VERIFY( um.cbegin(bn) != um.cend(bn) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_multimap/requirements/cliterators.cc b/libstdc++-v3/testsuite/23_containers/unordered_multimap/requirements/cliterators.cc
new file mode 100644
index 0000000..947e2a7
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/unordered_multimap/requirements/cliterators.cc
@@ -0,0 +1,53 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2008-06-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#include <unordered_map>
+#include <testsuite_hooks.h>
+
+// DR 691.
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef std::unordered_multimap<int, int> umm_type;
+  umm_type umm;
+  umm.insert(umm_type::value_type(1, 1));
+  VERIFY( umm.cbegin(0) == umm.begin(0) );
+  VERIFY( umm.cend(0) == umm.end(0) );
+  const umm_type::size_type bn = umm.bucket(1);
+  VERIFY( umm.cbegin(bn) != umm.cend(bn) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_multiset/requirements/cliterators.cc b/libstdc++-v3/testsuite/23_containers/unordered_multiset/requirements/cliterators.cc
new file mode 100644
index 0000000..51b3256
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/unordered_multiset/requirements/cliterators.cc
@@ -0,0 +1,53 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2008-06-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#include <unordered_set>
+#include <testsuite_hooks.h>
+
+// DR 691.
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef std::unordered_multiset<int> ums_type;
+  ums_type ums;
+  ums.insert(1);
+  VERIFY( ums.cbegin(0) == ums.begin(0) );
+  VERIFY( ums.cend(0) == ums.end(0) );
+  const ums_type::size_type bn = ums.bucket(1);
+  VERIFY( ums.cbegin(bn) != ums.cend(bn) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_set/requirements/cliterators.cc b/libstdc++-v3/testsuite/23_containers/unordered_set/requirements/cliterators.cc
new file mode 100644
index 0000000..944514a
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/unordered_set/requirements/cliterators.cc
@@ -0,0 +1,53 @@
+// { dg-options "-std=gnu++0x" }
+
+// 2007-06-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#include <unordered_set>
+#include <testsuite_hooks.h>
+
+// DR 691.
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef std::unordered_set<int> us_type;
+  us_type us;
+  us.insert(1);
+  VERIFY( us.cbegin(0) == us.begin(0) );
+  VERIFY( us.cend(0) == us.end(0) );
+  const us_type::size_type bn = us.bucket(1);
+  VERIFY( us.cbegin(bn) != us.cend(bn) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}