Index: ossp-pkg/sio/al.c
RCS File: /v/ossp/cvs/ossp-pkg/sio/Attic/al.c,v
rcsdiff -q -kk '-r1.4' '-r1.5' -u '/v/ossp/cvs/ossp-pkg/sio/Attic/al.c,v' 2>/dev/null
--- al.c	2002/10/14 13:34:25	1.4
+++ al.c	2002/10/14 13:45:47	1.5
@@ -770,7 +770,10 @@
 {
     size_t step;
 
-    if (txp->cur == NULL)
+    if (txp->togo <= 0)     /* XXX - togo can be negative from bad input */
+        return AL_ERR_EOF;
+
+    if (txp->cur == NULL)   /* premature EOF */
         return AL_ERR_EOF;
 
     step = AL_CHUNK_LEN(txp->cur);
@@ -847,6 +850,8 @@
     al_chunk_t *view;
     size_t step, total;
 
+    *lenp = 0; /* keep caller on safe side */
+
     rc = al_traverse(al, off, n, AL_FORWARD, &tx);
     if (rc != AL_OK) return rc;