4 files changed, 10 insertions, 0 deletions
diff --git a/src/multimedia/audio/qaudiosystemplugin.cpp b/src/multimedia/audio/qaudiosystemplugin.cpp
index 85fa855b1..0262026c1 100644
--- a/src/multimedia/audio/qaudiosystemplugin.cpp
+++ b/src/multimedia/audio/qaudiosystemplugin.cpp
@@ -44,6 +44,10 @@
 
 QT_BEGIN_NAMESPACE
 
+QAudioSystemFactoryInterface::~QAudioSystemFactoryInterface()
+{
+}
+
 /*!
     \class QAudioSystemPlugin
     \brief The QAudioSystemPlugin class provides an abstract base for audio plugins.
diff --git a/src/multimedia/audio/qaudiosystemplugin.h b/src/multimedia/audio/qaudiosystemplugin.h
index 7a8a4606a..b2e1dd17b 100644
--- a/src/multimedia/audio/qaudiosystemplugin.h
+++ b/src/multimedia/audio/qaudiosystemplugin.h
@@ -66,6 +66,7 @@ struct Q_MULTIMEDIA_EXPORT QAudioSystemFactoryInterface
     virtual QAbstractAudioInput* createInput(const QByteArray& device) = 0;
     virtual QAbstractAudioOutput* createOutput(const QByteArray& device) = 0;
     virtual QAbstractAudioDeviceInfo* createDeviceInfo(const QByteArray& device, QAudio::Mode mode) = 0;
+    virtual ~QAudioSystemFactoryInterface();
 };
 
 #define QAudioSystemFactoryInterface_iid \
diff --git a/src/multimedia/qmediaserviceprovider.cpp b/src/multimedia/qmediaserviceprovider.cpp
index 8be091df4..09dff9d86 100644
--- a/src/multimedia/qmediaserviceprovider.cpp
+++ b/src/multimedia/qmediaserviceprovider.cpp
@@ -50,6 +50,10 @@
 
 QT_BEGIN_NAMESPACE
 
+QMediaServiceProviderFactoryInterface::~QMediaServiceProviderFactoryInterface()
+{
+}
+
 class QMediaServiceProviderHintPrivate : public QSharedData
 {
 public:
diff --git a/src/multimedia/qmediaserviceproviderplugin.h b/src/multimedia/qmediaserviceproviderplugin.h
index 870ee5966..9a7ff1d1e 100644
--- a/src/multimedia/qmediaserviceproviderplugin.h
+++ b/src/multimedia/qmediaserviceproviderplugin.h
@@ -112,6 +112,7 @@ struct Q_MULTIMEDIA_EXPORT QMediaServiceProviderFactoryInterface
 {
     virtual QMediaService* create(QString const& key) = 0;
     virtual void release(QMediaService *service) = 0;
+    virtual ~QMediaServiceProviderFactoryInterface();
 };
 
 #define QMediaServiceProviderFactoryInterface_iid \