Q{LocalSocket|Process}/Win: handle write errors

To match the Unix behavior, we should emit errorOccurred() signal and
close the channel if the write operation fails.

Change-Id: Iac3acb18dbbfe6e7e8afb2555d9adaff1fe98d0f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/corelib/io/qprocess_win.cpp b/src/corelib/io/qprocess_win.cpp
index f935e4f491..b2e8beaa53 100644
--- a/src/corelib/io/qprocess_win.cpp
+++ b/src/corelib/io/qprocess_win.cpp
@@ -841,6 +841,8 @@ qint64 QProcess::writeData(const char *data, qint64 len)
         d->stdinChannel.writer = new QWindowsPipeWriter(d->stdinChannel.pipe[1], this);
         QObjectPrivate::connect(d->stdinChannel.writer, &QWindowsPipeWriter::bytesWritten,
                                 d, &QProcessPrivate::_q_bytesWritten);
+        QObjectPrivate::connect(d->stdinChannel.writer, &QWindowsPipeWriter::writeFailed,
+                                d, &QProcessPrivate::_q_writeFailed);
     }
 
     if (d->isWriteChunkCached(data, len))
@@ -872,6 +874,12 @@ void QProcessPrivate::_q_bytesWritten(qint64 bytes)
         closeWriteChannel();
 }
 
+void QProcessPrivate::_q_writeFailed()
+{
+    closeWriteChannel();
+    setErrorAndEmit(QProcess::WriteError);
+}
+
 // Use ShellExecuteEx() to trigger an UAC prompt when CreateProcess()fails
 // with ERROR_ELEVATION_REQUIRED.
 static bool startDetachedUacPrompt(const QString &programIn, const QStringList &arguments,