From 6f856c62613ffc82bf3572a372d2851638c2fb90 Mon Sep 17 00:00:00 2001
From: Richard Braun <rbraun@sceen.net>
Date: Sat, 28 Jun 2014 11:41:21 +0200
Subject: libpipe: fix calls to pipe_send with no data

* libpipe/pipe.c (pipe_send): Check that there actually is any data to
send before calling the pipe write operation.
---
 libpipe/pipe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libpipe/pipe.c')

diff --git a/libpipe/pipe.c b/libpipe/pipe.c
index f9300e7c..56c339dd 100644
--- a/libpipe/pipe.c
+++ b/libpipe/pipe.c
@@ -358,7 +358,7 @@ pipe_send (struct pipe *pipe, int noblock, void *source,
 	}
     }
 
-  if (!err)
+  if (!err && data_len > 0)
     err = (*pipe->class->write)(pipe->queue, source, data, data_len, amount);
 
   if (!err)
-- 
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