From f9dc4b90915e77e10684b7e5646578a0c2c720b3 Mon Sep 17 00:00:00 2001
From: Yehuda Sadeh <yehuda@hq.newdream.net>
Date: Tue, 29 Jun 2010 15:59:20 -0700
Subject: [PATCH] buffer: write_fd should skip empty buffers

---
 src/common/buffer.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/common/buffer.cc b/src/common/buffer.cc
index aab9837685217..4c9e33b404c40 100644
--- a/src/common/buffer.cc
+++ b/src/common/buffer.cc
@@ -132,8 +132,10 @@ int buffer::list::write_fd(int fd)
     for (std::list<ptr>::const_iterator it = _buffers.begin(); 
 	 it != _buffers.end(); 
 	 it++) {
-      const char *c = it->c_str();
       int left = it->length();
+      if (!left)
+        continue;
+      const char *c = it->c_str();
       while (left > 0) {
 	int r = ::write(fd, c, left);
 	if (r < 0)
-- 
2.39.5