From: Howard Chu <hyc@openldap.org>
Date: Fri, 7 Jun 2002 13:27:25 +0000 (+0000)
Subject: Fix ITS#1843, don't deref NULL string in ldap_pvt_str2upper
X-Git-Tag: OPENLDAP_REL_ENG_2_MP~9
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=70092b38fb23b9141a2b8414fb5a9c5200f3c12d;p=openldap

Fix ITS#1843, don't deref NULL string in ldap_pvt_str2upper
---

diff --git a/libraries/libldap/string.c b/libraries/libldap/string.c
index aaf76c609d..ee275baec6 100644
--- a/libraries/libldap/string.c
+++ b/libraries/libldap/string.c
@@ -103,8 +103,10 @@ ldap_pvt_str2upper( char *str )
 	char    *s;
 
 	/* to upper */
-	for ( s = str; *s; s++ ) {
-		*s = TOUPPER( (unsigned char) *s );
+	if ( str ) {
+		for ( s = str; *s; s++ ) {
+			*s = TOUPPER( (unsigned char) *s );
+		}
 	}
 
 	return( str );
@@ -116,8 +118,10 @@ ldap_pvt_str2lower( char *str )
 	char    *s;
 
 	/* to lower */
-	for ( s = str; *s; s++ ) {
-		*s = TOLOWER( (unsigned char) *s );
+	if ( str ) {
+		for ( s = str; *s; s++ ) {
+			*s = TOLOWER( (unsigned char) *s );
+		}
 	}
 
 	return( str );