re PR c++/34611 (Broken diagnostic: 'tree_list' not supported by dump_expr)

2008-01-04  Paolo Carlini  <pcarlini@suse.de>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/34611
	* error.c (dump_template_argument): Deal with TREE_LIST.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r131321

gcc/cp/ChangeLog

+2008-01-04  Paolo Carlini  <pcarlini@suse.de>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/34611
+	* error.c (dump_template_argument): Deal with TREE_LIST.
+
 2008-01-01  Douglas Gregor  <doug.gregor@gmail.com>
 
        * parser.c (cp_parser_check_decl_spec): Don't warn about "long

gcc/cp/error.c

@@ -143,7 +143,12 @@ dump_template_argument (tree arg, int flags)
   else if (TYPE_P (arg) || TREE_CODE (arg) == TEMPLATE_DECL)
     dump_type (arg, flags & ~TFF_CLASS_KEY_OR_ENUM);
   else
-    dump_expr (arg, (flags | TFF_EXPR_IN_PARENS) & ~TFF_CLASS_KEY_OR_ENUM);
+    {
+      if (TREE_CODE (arg) == TREE_LIST)
+	arg = TREE_VALUE (arg);
+
+      dump_expr (arg, (flags | TFF_EXPR_IN_PARENS) & ~TFF_CLASS_KEY_OR_ENUM);
+    }
 }
 
 /* Dump a template-argument-list ARGS (always a TREE_VEC) under control