Index: parse.y
===================================================================
RCS file: /cvs/src/sbin/pfctl/parse.y,v
retrieving revision 1.709
diff -u -p -r1.709 parse.y
--- parse.y	1 Feb 2021 00:31:04 -0000	1.709
+++ parse.y	31 Aug 2021 09:20:38 -0000
@@ -458,6 +458,8 @@ typedef struct {
 	int lineno;
 } YYSTYPE;
 
+static u_char	 *yytext;
+
 #define PPORT_RANGE	1
 #define PPORT_STAR	2
 int	parseport(char *, struct range *r, int);
@@ -471,7 +473,7 @@ int	parseport(char *, struct range *r, i
 %token	PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
 %token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
 %token	ICMP6TYPE CODE KEEP MODULATE STATE PORT BINATTO NODF
-%token	MINTTL ERROR ALLOWOPTS FILENAME ROUTETO DUPTO REPLYTO NO LABEL
+%token	MINTTL ERROR ALLOWOPTS FILENAME ROUTETO DUPTO REPLYTO YES NO LABEL
 %token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
 %token	REASSEMBLE ANCHOR SYNCOOKIES
 %token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
@@ -3754,16 +3756,11 @@ comma		: ','
 		;
 
 yesno		: NO			{ $$ = 0; }
-		| STRING		{
-			if (!strcmp($1, "yes"))
-				$$ = 1;
-			else {
-				yyerror("invalid value '%s', expected 'yes' "
-				    "or 'no'", $1);
-				free($1);
-				YYERROR;
-			}
-			free($1);
+		| YES			{ $$ = 1; }
+		| error			{
+			yyerror("invalid value '%s', expected 'yes' or 'no'",
+			    yytext);
+			YYABORT;
 		}
 		;
 
@@ -5048,6 +5045,7 @@ lookup(char *s)
 		{ "urpf-failed",	URPFFAILED},
 		{ "user",		USER},
 		{ "weight",		WEIGHT},
+		{ "yes",		YES},
 	};
 	const struct keywords	*p;
 
@@ -5170,10 +5168,12 @@ findeol(void)
 int
 yylex(void)
 {
-	u_char	 buf[8096];
+	static u_char buf[8192];
 	u_char	*p, *val;
 	int	 quotec, next, c;
 	int	 token;
+
+	yytext = buf;
 
 top:
 	p = buf;