re PR c++/51046 ([C++0x] ICE by unexpanded template param pack in range-based for)

	PR c++/51046
	* parser.c (cp_parser_range_for): check_for_bare_parameter_packs.

From-SVN: r181239

gcc/cp/ChangeLog

 2011-11-09  Jason Merrill  <jason@redhat.com>
 
+	PR c++/51046
+	* parser.c (cp_parser_range_for): check_for_bare_parameter_packs.
+
 	PR c++/51029
 	* class.c (build_base_path): Don't ICE in fold_non_dependent_expr.
 

gcc/cp/parser.c

@@ -9292,6 +9292,8 @@ cp_parser_range_for (cp_parser *parser, tree scope, tree init, tree range_decl)
      at instantiation. If not, it is done just ahead. */
   if (processing_template_decl)
     {
+      if (check_for_bare_parameter_packs (range_expr))
+	range_expr = error_mark_node;
       stmt = begin_range_for_stmt (scope, init);
       finish_range_for_decl (stmt, range_decl, range_expr);
       if (!type_dependent_expression_p (range_expr)

gcc/testsuite/ChangeLog

+2011-11-09  Jason Merrill  <jason@redhat.com>
+
+	PR c++/51046
+	* g++.dg/cpp0x/variadic119.C: New.
+
 2011-11-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/50911

gcc/testsuite/g++.dg/cpp0x/variadic119.C

+// PR c++/51046
+// { dg-do compile { target c++11 } }
+
+template<int... IS>
+void f()
+{
+  for (int i : IS);		// { dg-error "not expanded" }
+}
+
+int main()
+{
+  f<0, 1, 2>();
+}