From: Francis Dupont <fdupont@isc.org>
Date: Fri, 11 Apr 2014 11:25:49 +0000 (+0200)
Subject: fix char sign extension [#35743]
X-Git-Tag: v9.10.0rc2~30
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=c80fef792a864f08453128230216fb079a69500b;p=thirdparty%2Fbind9.git

fix char sign extension [#35743]
---

diff --git a/lib/dns/name.c b/lib/dns/name.c
index 62e210eb0f0..4a33e81e53e 100644
--- a/lib/dns/name.c
+++ b/lib/dns/name.c
@@ -1201,7 +1201,7 @@ dns_name_fromtext(dns_name_t *name, isc_buffer_t *source,
 				count++;
 				CONVERTTOASCII(c);
 				if (downcase)
-					c = maptolower[(int)c];
+					c = maptolower[c & 0xff];
 				*ndata++ = c;
 				nrem--;
 				nused++;
@@ -1225,7 +1225,7 @@ dns_name_fromtext(dns_name_t *name, isc_buffer_t *source,
 				count++;
 				CONVERTTOASCII(c);
 				if (downcase)
-					c = maptolower[(int)c];
+					c = maptolower[c & 0xff];
 				*ndata++ = c;
 				nrem--;
 				nused++;
@@ -1240,7 +1240,7 @@ dns_name_fromtext(dns_name_t *name, isc_buffer_t *source,
 			if (!isdigit(c & 0xff))
 				return (DNS_R_BADESCAPE);
 			value *= 10;
-			value += digitvalue[(int)c];
+			value += digitvalue[c & 0xff];
 			digits++;
 			if (digits == 3) {
 				if (value > 255)
@@ -1292,7 +1292,7 @@ dns_name_fromtext(dns_name_t *name, isc_buffer_t *source,
 				while (n2 > 0) {
 					c = *label++;
 					if (downcase)
-						c = maptolower[(int)c];
+						c = maptolower[c & 0xff];
 					*ndata++ = c;
 					n2--;
 				}