From 2e8706cc0375c766c09d86c0e4b3a69d92b35679 Mon Sep 17 00:00:00 2001
From: ache <ache@FreeBSD.org>
Date: Thu, 4 Nov 1999 04:40:56 +0000
Subject: Add unsigned char cast to isupper

---
 lib/libc/stdtime/strptime.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/libc/stdtime')

diff --git a/lib/libc/stdtime/strptime.c b/lib/libc/stdtime/strptime.c
index a49db88..7f2de92 100644
--- a/lib/libc/stdtime/strptime.c
+++ b/lib/libc/stdtime/strptime.c
@@ -362,7 +362,7 @@ _strptime(const char *buf, const char *fmt, struct tm *tm)
 			const char *cp;
 			char *zonestr;
 
-			for (cp = buf; *cp && isupper(*cp); ++cp) {/*empty*/}
+			for (cp = buf; *cp && isupper((unsigned char)*cp); ++cp) {/*empty*/}
 			if (cp - buf) {
 				zonestr = alloca(cp - buf + 1);
 				strncpy(zonestr, buf, cp - buf);
-- 
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