+From 47720e2255f34ecad49763c66a7ea02a55a3f60a Mon Sep 17 00:00:00 2001
+From: Nobuyoshi Nakada <nobu@ruby-lang.org>
+Date: Mon, 4 May 2020 13:35:38 +0900
+Subject: [PATCH] Bison 3.59.1 folds yydestruct function header
+
+---
+ tool/ytab.sed | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/tool/ytab.sed b/tool/ytab.sed
+index ba7566ac7fab..95a9b3e1eb33 100755
+--- a/tool/ytab.sed
++++ b/tool/ytab.sed
+@@ -14,6 +14,7 @@ a\
+ }
+ /^yydestruct.*yymsg/,/{/{
+ /^yydestruct/{
++ /,$/N
+ /[, *]p)/!{
+ H
+ s/^/ruby_parser_&/