>>>>>> Qt5WebKitd.dll!WebCore::InspectorFrontendClientQt::~InspectorFrontendClientQt() Line 292 C++ Qt5WebKitd.dll!WebCore::InspectorFrontendClientQt::`scalar deleting destructor'() + 0xf bytes C++ Qt5WebKitd.dll!WTF::deleteOwnedPtr<WTF::MemoryInstrumentation::InstrumentedPointer<WebCore::WebKitCSSSVGDocumentValue> >(WTF::MemoryInstrumentation::InstrumentedPointer<WebCore::WebKitCSSSVGDocumentValue> * ptr=0x07695588) Line 60 + 0x20 bytes C++ Qt5WebKitd.dll!WTF::PassOwnPtr<WebCore::WorkerEventQueue>::~PassOwnPtr<WebCore::WorkerEventQueue>() Line 63 + 0x12 bytes C++ Qt5WebKitd.dll!WebCore::InspectorController::~InspectorController() Line 176 + 0x21 bytes C++ Qt5WebKitd.dll!WebCore::InspectorController::`scalar deleting destructor'() + 0xf bytes C++ Qt5WebKitd.dll!WTF::deleteOwnedPtr<WebCore::InspectorController>(WebCore::InspectorController * ptr=0x07639478) Line 60 + 0x1c bytes C++ Qt5WebKitd.dll!WTF::PassOwnPtr<WebCore::InspectorController>::~PassOwnPtr<WebCore::InspectorController>() Line 56 + 0x12 bytes C++ Qt5WebKitd.dll!WebCore::Page::~Page() Line 218 + 0xec bytes C++ Qt5WebKitd.dll!WebCore::Page::`scalar deleting destructor'() + 0xf bytes C++ Qt5WebKitd.dll!QWebPageAdapter::deletePage() Line 237 + 0x1f bytes C++ Qt5WebKitWidgetsd.dll!QWebPagePrivate::~QWebPagePrivate() Line 238 C++ Qt5WebKitWidgetsd.dll!QWebPagePrivate::`scalar deleting destructor'() + 0xf bytes C++ Qt5WebKitWidgetsd.dll!QWebPage::~QWebPage() Line 1368 + 0x23 bytes C++ Qt5WebKitWidgetsd.dll!WebKit::InspectorClientWebPage::~InspectorClientWebPage() + 0xf bytes C++ Qt5WebKitWidgetsd.dll!WebKit::InspectorClientWebPage::`scalar deleting destructor'() + 0xf bytes C++ Qt5WebKitWidgetsd.dll!QWebViewPrivate::detachCurrentPage() Line 236 + 0x24 bytes C++ Qt5WebKitWidgetsd.dll!QWebViewPrivate::~QWebViewPrivate() Line 64 C++ Qt5WebKitWidgetsd.dll!QWebViewPrivate::`scalar deleting destructor'() + 0xf bytes C++ Qt5WebKitWidgetsd.dll!QWebView::~QWebView() Line 199 + 0x23 bytes C++ Qt5WebKitWidgetsd.dll!QWebView::`vector deleting destructor'() + 0x4d bytes C++ Qt5WebKitd.dll!WTF::deleteOwnedPtr<QObject>(QObject * ptr=0x0406ed38) Line 60 + 0x21 bytes C++ Qt5WebKitd.dll!WTF::PassOwnPtr<QQuickItem>::~PassOwnPtr<QQuickItem>() Line 56 + 0x12 bytes C++ Qt5WebKitd.dll!WebCore::InspectorFrontendClientQt::destroyInspectorView(bool notifyInspectorController=false) Line 373 + 0x8 bytes C++ >>>>>> Qt5WebKitd.dll!WebCore::InspectorFrontendClientQt::inspectorClientDestroyed() Line 378 C++ Qt5WebKitd.dll!WebCore::InspectorClientQt::closeInspectorFrontend() Line 216 C++ Qt5WebKitd.dll!WebCore::InspectorController::close() Line 270 C++ Qt5WebKitd.dll!QWebPageAdapter::didCloseInspector() Line 1024 C++ Qt5WebKitWidgetsd.dll!QWebInspector::closeEvent(QCloseEvent * event=0x05363000) Line 182 C++ Qt5Widgetsd.dll!QWidget::event(QEvent * event=0x05363000) Line 8024 C++ Qt5WebKitWidgetsd.dll!QWebInspector::event(QEvent * ev=0x05363000) Line 148 C++ Follow these steps in InspectorFrontendClientQt::inspectorClientDestroyed to write freed memory: m_inspectorClient = 0; m_inspectedWebPage = 0;