From 886086f5d39a317443018689f817e8eb8ecb0be8 Mon Sep 17 00:00:00 2001
From: Aleksei Timofeyev <aleksei.timofeyev@gmail.com>
Date: Fri, 22 Apr 2016 12:57:17 +0500
Subject: [PATCH] QWindowsPipeWriter: Discard queued signals in stop()

The _q_queueBytesWritten signal may be already queued from the event loop
at the time when stop() is called. We do not want to emit signals once
stopped, so reset all respective state variables.

Change-Id: I343e1702955e0bbc1d11930d19e75dab6e129b4c
Reviewed-by: Alex Trotsenko <alex1973tr@gmail.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
---
 src/corelib/io/qwindowspipewriter.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/corelib/io/qwindowspipewriter.cpp b/src/corelib/io/qwindowspipewriter.cpp
index 839dc8a19c..3731aba97b 100644
--- a/src/corelib/io/qwindowspipewriter.cpp
+++ b/src/corelib/io/qwindowspipewriter.cpp
@@ -202,6 +202,8 @@ bool QWindowsPipeWriter::write(const QByteArray &ba)
 void QWindowsPipeWriter::stop()
 {
     stopped = true;
+    bytesWrittenPending = false;
+    pendingBytesWrittenValue = 0;
     if (writeSequenceStarted) {
         if (!qt_cancelIo(handle, &overlapped)) {
             const DWORD dwError = GetLastError();