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-rw-r--r--generic/tclIO.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index 28e9fbc..57960f5 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -10,7 +10,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclIO.c,v 1.163 2009/10/19 22:00:19 dgp Exp $
+ * RCS: @(#) $Id: tclIO.c,v 1.164 2009/10/23 19:09:17 andreas_kupries Exp $
*/
#include "tclInt.h"
@@ -2393,7 +2393,11 @@ FlushChannel(
*/
toWrite = BytesLeft(bufPtr);
- written = ChanWrite(chanPtr, RemovePoint(bufPtr),toWrite, &errorCode);
+ if (toWrite == 0) {
+ written = 0;
+ } else {
+ written = ChanWrite(chanPtr, RemovePoint(bufPtr),toWrite, &errorCode);
+ }
/*
* If the write failed completely attempt to start the asynchronous