PATCH to print_node for TREE_BINFO

[Jason Merrill <jason@redhat.com>]

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When looking at access control bugs, it's nice to have a bit more 
information about a TREE_BINFO.

Tested x86_64-pc-linux-gnu, applying to trunk.


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commit 98c80a68ea91426855ec2c04b6358aeb67909baf
Author: Jason Merrill <jason@redhat.com>
Date:   Tue Aug 18 17:13:16 2015 -0400

    	* print-tree.c (print_node): Handle TREE_BINFO.

diff --git a/gcc/print-tree.c b/gcc/print-tree.c
index 6e0d4a9..ea50056 100644
--- a/gcc/print-tree.c
+++ b/gcc/print-tree.c
@@ -911,6 +911,17 @@ print_node (FILE *file, const char *prefix, tree node, int indent)
 			    indent + 4);
 	  break;
 
+	case TREE_BINFO:
+	  fprintf (file, " bases %d",
+		   vec_safe_length (BINFO_BASE_BINFOS (node)));
+	  print_node_brief (file, "offset", BINFO_OFFSET (node), indent + 4);
+	  print_node_brief (file, "virtuals", BINFO_VIRTUALS (node),
+			    indent + 4);
+	  print_node_brief (file, "inheritance chain",
+			    BINFO_INHERITANCE_CHAIN (node),
+			    indent + 4);
+	  break;
+
 	default:
 	  if (EXCEPTIONAL_CLASS_P (node))
 	    lang_hooks.print_xnode (file, node, indent);