From: Martin Mares <mj@ucw.cz>
Date: Wed, 7 Mar 2001 12:34:14 +0000 (+0000)
Subject: Don't crash when the last fragment is of zero length.
X-Git-Tag: holmes-import~1522
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=b1cd4b4205cec5683827f81adaba7d8d8779a3a2;p=libucw.git

Don't crash when the last fragment is of zero length.

No more SEGV's on truncated files.
---

diff --git a/lib/fb-mem.c b/lib/fb-mem.c
index 54fe8bfa..d5e6e8b9 100644
--- a/lib/fb-mem.c
+++ b/lib/fb-mem.c
@@ -46,6 +46,8 @@ fbmem_refill(struct fastbuf *f)
       f->pos += b->size;
       b = b->next;
     }
+  if (!b->size)
+    return 0;
   f->buffer = f->bptr = b->data;
   f->bufend = f->bstop = b->data + b->size;
   f->llpos = b;