From: Martin Mares <mj@ucw.cz>
Date: Fri, 12 Mar 2004 13:54:46 +0000 (+0000)
Subject: Seek to end of an empty fbmem stream needs a special exception.
X-Git-Tag: holmes-import~1100
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=15e46da83c62468aa2a7f2396ad9280f79a30e99;p=libucw.git

Seek to end of an empty fbmem stream needs a special exception.
---

diff --git a/lib/fb-mem.c b/lib/fb-mem.c
index 2b0d7e94..daa80733 100644
--- a/lib/fb-mem.c
+++ b/lib/fb-mem.c
@@ -120,6 +120,14 @@ fbmem_seek(struct fastbuf *f, sh_off_t pos, int whence)
 	  return;
 	}
     }
+  if (!m->first && !pos)
+    {
+      /* Seeking to offset 0 in an empty file needs an exception */
+      f->buffer = f->bptr = f->bufend = NULL;
+      f->pos = 0;
+      FB_MEM(f)->block = NULL;
+      return;
+    }
   die("fbmem_seek to invalid offset");
 }