Don't emit error in destructor of QSerialPort.

QSerialPort::~QSerialPort() calls close() which emits an error if the
port is already closed. This error signal may then call slots of
already (partially) deleted objects.

Task-number: QTBUG-39369
Change-Id: I28bf94564ae120619054c6920779da974dccdad6
Reviewed-by: Laszlo Papp <lpapp@kde.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/serialport/qserialport.cpp b/src/serialport/qserialport.cpp
index 5885a7f..9d2fcef 100644
--- a/src/serialport/qserialport.cpp
+++ b/src/serialport/qserialport.cpp
@@ -425,7 +425,8 @@ QSerialPort::QSerialPort(const QSerialPortInfo &serialPortInfo, QObject *parent)
 QSerialPort::~QSerialPort()
 {
     /**/
-    close();
+    if (isOpen())
+        close();
     delete d_ptr;
 }