* parser.c (cp_parser_class_head): Use num_template_headers_for_class.

From-SVN: r260125

gcc/cp/ChangeLog

 2018-05-09  Jason Merrill  <jason@redhat.com>
 
+	* parser.c (cp_parser_class_head): Use num_template_headers_for_class.
+
 	* pt.c (instantiate_decl): Make sure we aren't trying to do a nested
 	instantiation in template context.
 

gcc/cp/parser.c

@@ -22930,20 +22930,7 @@ cp_parser_class_head (cp_parser* parser,
       /* Otherwise, count the number of templates used in TYPE and its
 	 containing scopes.  */
       else
-	{
-	  tree scope;
-
-	  for (scope = TREE_TYPE (type);
-	       scope && TREE_CODE (scope) != NAMESPACE_DECL;
-	       scope = get_containing_scope (scope))
-	    if (TYPE_P (scope)
-		&& CLASS_TYPE_P (scope)
-		&& CLASSTYPE_TEMPLATE_INFO (scope)
-		&& PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (scope))
-		&& (!CLASSTYPE_TEMPLATE_SPECIALIZATION (scope)
-		    || uses_template_parms (CLASSTYPE_TI_ARGS (scope))))
-	      ++num_templates;
-	}
+	num_templates = num_template_headers_for_class (TREE_TYPE (type));
     }
   /* Otherwise, the identifier is optional.  */
   else