Cast argument of ctype(3) macros to unsigned char, not int.

Similar to a diff from Hiltjo Posthum.  OK jung@ deraadt@

4 files changed, 20 insertions, 20 deletions

diff --git a/mta_session.c b/mta_session.c
index 3f855664..e109e662 100644
--- a/mta_session.c
+++ b/mta_session.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mta_session.c,v 1.132 2020/02/24 16:16:07 millert Exp $	*/
+/*	$OpenBSD: mta_session.c,v 1.133 2020/02/24 23:54:27 millert Exp $	*/
 
 /*
  * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org>
@@ -1295,13 +1295,12 @@ mta_io(struct io *io, int evt, void *arg)
 			if (s->replybuf[0] == '\0')
 				(void)strlcat(s->replybuf, line, sizeof s->replybuf);
 			else if (len > 4) {
-				line = line + 4;
-				if (isdigit((int)*line) && *(line + 1) == '.' &&
-				    isdigit((int)*line+2) && *(line + 3) == '.' &&
-				    isdigit((int)*line+4) && isspace((int)*(line + 5)))
-					(void)strlcat(s->replybuf, line+5, sizeof s->replybuf);
-				else
-					(void)strlcat(s->replybuf, line, sizeof s->replybuf);
+				p = line + 4;
+				if (isdigit((unsigned char)p[0]) && p[1] == '.' &&
+				    isdigit((unsigned char)p[2]) && p[3] == '.' &&
+				    isdigit((unsigned char)p[4]) && isspace((unsigned char)p[5]))
+					p += 5;
+				(void)strlcat(s->replybuf, p, sizeof s->replybuf);
 			}
 			goto nextline;
 		}
@@ -1313,9 +1312,9 @@ mta_io(struct io *io, int evt, void *arg)
 			(void)strlcat(s->replybuf, line, sizeof s->replybuf);
 		else if (len > 4) {
 			p = line + 4;
-			if (isdigit((int)*p) && *(p + 1) == '.' &&
-			    isdigit((int)*p+2) && *(p + 3) == '.' &&
-			    isdigit((int)*p+4) && isspace((int)*(p + 5)))
+			if (isdigit((unsigned char)p[0]) && p[1] == '.' &&
+			    isdigit((unsigned char)p[2]) && p[3] == '.' &&
+			    isdigit((unsigned char)p[4]) && isspace((unsigned char)p[5]))
 				p += 5;
 			if (strlcat(s->replybuf, p, sizeof s->replybuf) >= sizeof s->replybuf)
 				(void)strlcpy(s->replybuf, line, sizeof s->replybuf);
diff --git a/parse.y b/parse.y
index e3a02430..4d187f7a 100644
--- a/parse.y
+++ b/parse.y
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parse.y,v 1.276 2020/02/03 15:41:22 gilles Exp $	*/
+/*	$OpenBSD: parse.y,v 1.277 2020/02/24 23:54:27 millert Exp $	*/
 
 /*
  * Copyright (c) 2008 Gilles Chehade <gilles@poolp.org>
@@ -529,7 +529,7 @@ SMTP LIMIT limits_smtp
 		free($3);
 		YYERROR;
 	}
-	if (isspace((int)*$3) ||  !isprint((int)*$3) || *$3== '@') {
+	if (isspace((unsigned char)*$3) || !isprint((unsigned char)*$3) || *$3 == '@') {
 		yyerror("sub-addr-delim uses invalid character");
 		free($3);
 		YYERROR;
diff --git a/smtp_client.c b/smtp_client.c
index 22e79890..528f48b7 100644
--- a/smtp_client.c
+++ b/smtp_client.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: smtp_client.c,v 1.12 2019/09/10 12:08:26 eric Exp $	*/
+/*	$OpenBSD: smtp_client.c,v 1.13 2020/02/24 23:54:27 millert Exp $	*/
 
 /*
  * Copyright (c) 2018 Eric Faurot <eric@openbsd.org>
@@ -779,9 +779,10 @@ smtp_client_replycat(struct smtp_client *proto, const char *line)
 		line += 3;
 		if (line[0]) {
 			line += 1;
-			if (isdigit((int)line[0]) && line[1] == '.' &&
-			    isdigit((int)line[2]) && line[3] == '.' &&
-			    isdigit((int)line[4]) && isspace((int)line[5]))
+			if (isdigit((unsigned char)line[0]) && line[1] == '.' &&
+			    isdigit((unsigned char)line[2]) && line[3] == '.' &&
+			    isdigit((unsigned char)line[4]) &&
+			    isspace((unsigned char)line[5]))
 				line += 5;
 		}
 	} else
diff --git a/util.c b/util.c
index f59ad1e4..fce97ee7 100644
--- a/util.c
+++ b/util.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: util.c,v 1.150 2019/10/03 04:49:12 gilles Exp $	*/
+/*	$OpenBSD: util.c,v 1.151 2020/02/24 23:54:28 millert Exp $	*/
 
 /*
  * Copyright (c) 2000,2001 Markus Friedl.  All rights reserved.
@@ -462,7 +462,7 @@ valid_domainpart(const char *s)
 		if (strlcpy(domain, p, sizeof domain) >= sizeof domain)
 			return 0;
 
-		c = strchr(domain, (int)']');
+		c = strchr(domain, ']');
 		if (!c || c[1] != '\0')
 			return 0;
 
@@ -489,7 +489,7 @@ valid_domainpart(const char *s)
 	return res_hnok(s);
 }
 
-#define LABELCHR(c) ((c) == '-' || (c) == '_' || isalpha((int)(c)) || isdigit((int)(c)))
+#define LABELCHR(c) ((c) == '-' || (c) == '_' || isalpha((unsigned char)(c)) || isdigit((unsigned char)(c)))
 #define LABELMAX 63
 #define DNAMEMAX 253