From a67c69cbaee1e419b1950832afb295cc951b202e Mon Sep 17 00:00:00 2001
From: Rob Pike <r@golang.org>
Date: Fri, 20 Jan 2012 10:22:41 -0800
Subject: [PATCH] goyacc: fix indexing bug when yydebug >= 2 Fixes #2701.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5556070
---
 src/cmd/goyacc/goyacc.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/cmd/goyacc/goyacc.go b/src/cmd/goyacc/goyacc.go
index ff18fa7e70..e1b99bed2b 100644
--- a/src/cmd/goyacc/goyacc.go
+++ b/src/cmd/goyacc/goyacc.go
@@ -3271,10 +3271,9 @@ $$default:
 					}
 				}
 
-				/* the current p has no shift onn "error", pop stack */
+				/* the current p has no shift on "error", pop stack */
 				if $$Debug >= 2 {
-					fmt.Printf("error recovery pops state %d, uncovers %d\n",
-						$$S[$$p].yys, $$S[$$p-1].yys)
+					fmt.Printf("error recovery pops state %d\n", $$S[$$p].yys)
 				}
 				$$p--
 			}
-- 
2.48.1