re PR c++/29470 (Using declaration access semantics change with templates)

        PR c++/29470
        * pt.c (tsubst_decl) [USING_DECL]: Propagate access flags.

From-SVN: r143445

gcc/cp/ChangeLog

 2009-01-16  Jason Merrill  <jason@redhat.com>
 
+	PR c++/29470
+	* pt.c (tsubst_decl) [USING_DECL]: Propagate access flags.
+
 	PR c++/38579
 	* search.c (protected_accessible_p): N doesn't vary.
 

gcc/cp/pt.c

@@ -8485,6 +8485,11 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain)
 	     tsubst_copy (DECL_NAME (t), args, complain, in_decl));
 	  if (!r)
 	    r = error_mark_node;
+	  else
+	    {
+	      TREE_PROTECTED (r) = TREE_PROTECTED (t);
+	      TREE_PRIVATE (r) = TREE_PRIVATE (t);
+	    }
 	}
       else
 	{

gcc/testsuite/ChangeLog

+2009-01-16  Jason Merrill  <jason@redhat.com>
+
+	PR c++/29470
+	* g++.dg/template/access20.C: New test.
+	* g++.dg/torture/pr34641.C: Fix access.
+
 2009-01-16  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/38835

gcc/testsuite/g++.dg/template/access20.C

+// PR c++/29470
+
+template <typename T> struct B
+{
+        protected:
+        T v;			// { dg-error "protected" }
+};
+template <typename T> struct D : B<T>
+{
+        protected:
+        using B<T>::v;
+};
+int main()
+{
+        D<int> d;
+        d.v = 0;		// { dg-error "context" }
+        return 0;
+}

gcc/testsuite/g++.dg/torture/pr34641.C

@@ -70,6 +70,7 @@ template < typename T, size_t inlineCapacity > class VectorBuffer;
 template < typename T > class VectorBuffer < T, 0 >:private VectorBufferBase <
   T >
 {
+public:
   typedef VectorBufferBase < T > Base;
   using Base::allocateBuffer;
 };