Improve C++ debug_tree.

	* ptree.c (cxx_print_type): Print args of
	BOUND_TEMPLATE_TEMPLATE_PARM.
	(cxx_print_decl): Print DECL_TEMPLATE_PARMS.

From-SVN: r243865

gcc/cp/ChangeLog

 2016-12-21  Jason Merrill  <jason@redhat.com>
 
+	* ptree.c (cxx_print_type): Print args of
+	BOUND_TEMPLATE_TEMPLATE_PARM.
+	(cxx_print_decl): Print DECL_TEMPLATE_PARMS.
+
 	PR c++/78767 - ICE with inherited constructor default argument
 	* method.c (strip_inheriting_ctors): Strip template as appropriate.
 

gcc/cp/ptree.c

@@ -50,6 +50,7 @@ cxx_print_decl (FILE *file, tree node, int indent)
     }
   else if (TREE_CODE (node) == TEMPLATE_DECL)
     {
+      print_node (file, "parms", DECL_TEMPLATE_PARMS (node), indent + 4);
       indent_to (file, indent + 3);
       fprintf (file, " full-name \"%s\"",
 	       decl_as_string (node, TFF_TEMPLATE_HEADER));
@@ -73,9 +74,12 @@ cxx_print_type (FILE *file, tree node, int indent)
 {
   switch (TREE_CODE (node))
     {
+    case BOUND_TEMPLATE_TEMPLATE_PARM:
+      print_node (file, "args", TYPE_TI_ARGS (node), indent + 4);
+      gcc_fallthrough ();
+
     case TEMPLATE_TYPE_PARM:
     case TEMPLATE_TEMPLATE_PARM:
-    case BOUND_TEMPLATE_TEMPLATE_PARM:
       indent_to (file, indent + 3);
       fprintf (file, "index %d level %d orig_level %d",
 	       TEMPLATE_TYPE_IDX (node), TEMPLATE_TYPE_LEVEL (node),