From 0d7e847153ed5b6006b686085207527ff2f28853 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 16 Aug 2023 23:52:04 +0900
Subject: [PATCH] Consider the special node when printing

Appreciation to the reporter, Huichiao Tsai <hctsai.cs10@nycu.edu.tw>.
---
 parse.y | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/parse.y b/parse.y
index c1c8a7514b..d5942983ea 100644
--- a/parse.y
+++ b/parse.y
@@ -1466,7 +1466,10 @@ static int looking_at_eol_p(struct parser_params *p);
 %define parse.error verbose
 %printer {
 #ifndef RIPPER
-    if ($$) {
+    if ($$ == (NODE *)-1) {
+        rb_parser_printf(p, "NODE_SPECIAL");
+    }
+    else if ($$) {
         rb_parser_printf(p, "%s", ruby_node_name(nd_type($$)));
     }
 #else