From: Martin Mares <mj@ucw.cz>
Date: Wed, 14 Sep 2005 11:48:32 +0000 (+0000)
Subject: If nothing has been written, brewind() needn't flush.
X-Git-Tag: holmes-import~738
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=c35c94cc25dfbae4c91edb388d1875ffdf58ca59;p=libucw.git

If nothing has been written, brewind() needn't flush.
---

diff --git a/lib/fastbuf.c b/lib/fastbuf.c
index 6fbb2184..59a923ba 100644
--- a/lib/fastbuf.c
+++ b/lib/fastbuf.c
@@ -1,7 +1,7 @@
 /*
  *	UCW Library -- Fast Buffered I/O
  *
- *	(c) 1997--2004 Martin Mares <mj@ucw.cz>
+ *	(c) 1997--2005 Martin Mares <mj@ucw.cz>
  *
  *	This software may be freely distributed and used according to the terms
  *	of the GNU Lesser General Public License.
@@ -339,7 +339,8 @@ bconfig(struct fastbuf *f, uns item, int value)
 void
 brewind(struct fastbuf *f)
 {
-  bflush(f);
+  if (f->bptr > f->bstop)
+    bflush(f);
   bsetpos(f, 0);
 }