77 *
88 *
99 * IDENTIFICATION
10- * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.9 1997/05/22 00:07:15 scrappy Exp $
10+ * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.10 1997/06/11 05:20:05 vadim Exp $
1111 *
1212 * NOTES
1313 *These functions are stored in pg_amproc. For each operator class
@@ -98,7 +98,7 @@ btabstimecmp(AbsoluteTime a, AbsoluteTime b)
9898int32
9999btcharcmp (char a ,char b )
100100{
101- return ((int32 ) (a - b ));
101+ return ((int32 ) (( uint8 ) a - ( uint8 ) b ));
102102}
103103
104104int32
@@ -135,9 +135,9 @@ int32
135135bttextcmp (struct varlena * a ,struct varlena * b )
136136{
137137int res ;
138+ unsignedchar * ap ,* bp ;
138139
139140#ifdef USE_LOCALE
140- unsignedchar * ap ,* bp ;
141141int la = VARSIZE (a )- VARHDRSZ ;
142142int lb = VARSIZE (b )- VARHDRSZ ;
143143
@@ -155,7 +155,6 @@ bttextcmp(struct varlena *a, struct varlena *b)
155155pfree (bp );
156156
157157#else
158- char * ap ,* bp ;
159158int len = VARSIZE (a );
160159
161160/* len is the length of the shorter of the two strings */
@@ -164,8 +163,8 @@ bttextcmp(struct varlena *a, struct varlena *b)
164163
165164len -= VARHDRSZ ;
166165
167- ap = VARDATA (a );
168- bp = VARDATA (b );
166+ ap = ( unsigned char * ) VARDATA (a );
167+ bp = ( unsigned char * ) VARDATA (b );
169168
170169/*
171170 * If the two strings differ in the first len bytes, or if they're