X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/890ab17c84437fcfc56195e72484110c5c231a46..77373efad24be4ed77391c9e8ab2f85285810311:/data/lalr1.cc

diff --git a/data/lalr1.cc b/data/lalr1.cc
index 342d87cf..3a15012a 100644
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -841,7 +841,8 @@ b4_error_verbose_if([, int tok])[)
     if (yypact_ninf_ < yyn && yyn <= yylast_)
       {
 	/* Start YYX at -YYN if negative to avoid negative indexes in
-	   YYCHECK.  */
+	   YYCHECK.  In other words, skip the first -YYN actions for this
+	   state because they are default actions.  */
 	int yyxbegin = yyn < 0 ? -yyn : 0;
 
 	/* Stay within bounds of both yycheck and yytname.  */