@@ -1779,7 +1779,7 @@ redata_getsubstr(redata_t *redata, long posini, long posend, char *buf, int len,

         int offset;

         int ooff;

         long pos;

-        if(redata==NULL || posini<=0 || posini>redata_getsize(redata) || posend<=0 || posend>redata_getsize(redata) || buf==NULL || len<1 || usedbuf==NULL)

+        if(redata==NULL || posini<0 || posini>redata_getsize(redata) || posend<=0 || posend>redata_getsize(redata) || buf==NULL || len<1 || usedbuf==NULL)

                 return(-1); /* sanity check failed */

         if(redata_getposptr(redata,posini,&numchunk,&offset)!=0)

                 return(-1); /* couldn't get pos */