.gdbinit: nd_tree

* .gdbinit (nd_tree): dump node tree by dump_node().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47892 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.gdbinit

@@ -738,6 +738,12 @@ define nd_tval
   rp ($arg0).u2.value
 end
 
+define nd_tree
+  set $buf = (struct RString *)rb_str_buf_new(0)
+  call dump_node((VALUE)($buf), rb_str_new(0, 0), 0, ($arg0))
+  printf "%s\n", $buf->as.heap.ptr
+end
+
 define rb_p
   call rb_p($arg0)
 end