re PR c++/34050 (ICE derived classes and variadic templates)

2008-02-14  Douglas Gregor  <doug.gregor@gmail.com>

	PR c++/34050
	* pt.c (tsubst_initializer_list): Deal with the use of
	VOID_TYPE_NODE to indicate value-initialization of the bases.


2008-02-14  Douglas Gregor  <doug.gregor@gmail.com>

	PR c++/34050
	* g++.dg/cpp0x/vt-34050.C: New.

From-SVN: r132331

gcc/cp/ChangeLog

+2008-02-14  Douglas Gregor  <doug.gregor@gmail.com>
+
+	PR c++/34050
+	* pt.c (tsubst_initializer_list): Deal with the use of
+	VOID_TYPE_NODE to indicate value-initialization of the bases.
+
 2008-02-14  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 	    Jason Merrill  <jason@redhat.com>
 

gcc/cp/pt.c

@@ -15190,6 +15190,15 @@ tsubst_initializer_list (tree t, tree argvec)
           PACK_EXPANSION_PARAMETER_PACKS (expr) =
             PACK_EXPANSION_PARAMETER_PACKS (TREE_PURPOSE (t));
 
+	  if (TREE_VALUE (t) == void_type_node)
+	    /* VOID_TYPE_NODE is used to indicate
+	       value-initialization.  */
+	    {
+	      for (i = 0; i < len; i++)
+		TREE_VEC_ELT (expanded_arguments, i) = void_type_node;
+	    }
+	  else
+	    {
 	      /* Substitute parameter packs into each argument in the
 		 TREE_LIST.  */
 	      in_base_initializer = 1;
@@ -15199,7 +15208,8 @@ tsubst_initializer_list (tree t, tree argvec)
 
 		  /* Expand the argument.  */
 		  SET_PACK_EXPANSION_PATTERN (expr, TREE_VALUE (arg));
-              expanded_exprs = tsubst_pack_expansion (expr, argvec,
+		  expanded_exprs 
+		    = tsubst_pack_expansion (expr, argvec,
 					     tf_warning_or_error,
 					     NULL_TREE);
 
@@ -15208,7 +15218,8 @@ tsubst_initializer_list (tree t, tree argvec)
 		  for (i = 0; i < len; i++)
 		    {
 		      TREE_VEC_ELT (expanded_arguments, i) = 
-                    tree_cons (NULL_TREE, TREE_VEC_ELT (expanded_exprs, i),
+			tree_cons (NULL_TREE, 
+				   TREE_VEC_ELT (expanded_exprs, i),
 				   TREE_VEC_ELT (expanded_arguments, i));
 		    }
 		}
@@ -15222,6 +15233,7 @@ tsubst_initializer_list (tree t, tree argvec)
 		    nreverse (TREE_VEC_ELT (expanded_arguments, i));
 		}
 	    }
+        }
 
       for (i = 0; i < len; ++i)
         {

gcc/testsuite/ChangeLog

+2008-02-14  Douglas Gregor  <doug.gregor@gmail.com>
+
+	PR c++/34050
+	* g++.dg/cpp0x/vt-34050.C: New.
+
 2008-02-14  Danny Smith  <dannysmith@users.sourceforge.net>
 
 	PR preprocessor/35061

gcc/testsuite/g++.dg/cpp0x/vt-34050.C

+// { dg-options "-std=c++0x" }
+struct A {};
+
+template<typename... T> struct B : T...
+{
+  B() : T()... {}
+};
+
+B<A> b;