[Webkit-unassigned] [Bug 200465] New: [WebKit] ASSERTION FAILED: m_observers.isEmpty() if WKPageSetPageStateClient is used

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=200465

            Bug ID: 200465
           Summary: [WebKit] ASSERTION FAILED: m_observers.isEmpty() if
                    WKPageSetPageStateClient is used
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Hironori.Fujii at sony.com

[WebKit] ASSERTION FAILED: m_observers.isEmpty() if WKPageSetPageStateClient is used

After Bug 199848, An assertion always fails when terminating WebView if WKPageSetPageStateClient is used.

ASSERTION FAILED: m_observers.isEmpty()
..\..\Source\WebKit\UIProcess/PageLoadState.cpp(45) : ~PageLoadState

> WTF.dll!WTFCrash() Line 305	C++
> WebKit2.dll!WTFCrashWithInfo(int, const char *, const char *, int) Line 568	C++
> WebKit2.dll!WebKit::PageLoadState::~PageLoadState() Line 45	C++
> WebKit2.dll!WebKit::WebPageProxy::~WebPageProxy() Line 517	C++
> WebKit2.dll!WebKit::WebPageProxy::~WebPageProxy() Line 494	C++
> WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref::<unnamed-tag>::operator()() Line 77	C++
> WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref() Line 96	C++
> WebKit2.dll!WTF::derefIfNotNull<WebKit::WebPageProxy>(WebKit::WebPageProxy * ptr) Line 45	C++
> WebKit2.dll!WTF::RefPtr<WebKit::WebPageProxy,WTF::DumbPtrTraits<WebKit::WebPageProxy> >::~RefPtr() Line 69	C++
> WebKit2.dll!WebKit::WebView::~WebView() Line 257	C++
> WebKit2.dll!WebKit::WebView::~WebView() Line 253	C++
> WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref::<unnamed-tag>::operator()() Line 77	C++
> WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref() Line 96	C++
> WebKit2.dll!WKRelease(const void * typeRef) Line 47	C++
> MiniBrowserLib.dll!WebKit::WKRetainPtr<const OpaqueWKView *>::~WKRetainPtr() Line 82	C++
> MiniBrowserLib.dll!WebKitBrowserWindow::~WebKitBrowserWindow() Line 34	C++
> MiniBrowserLib.dll!WebKitBrowserWindow::~WebKitBrowserWindow() Line 34	C++
> MiniBrowserLib.dll!WTF::RefCounted<BrowserWindow>::deref() Line 145	C++
> MiniBrowserLib.dll!WTF::derefIfNotNull<BrowserWindow>(BrowserWindow * ptr) Line 45	C++
> MiniBrowserLib.dll!WTF::RefPtr<BrowserWindow,WTF::DumbPtrTraits<BrowserWindow> >::~RefPtr() Line 69	C++
> MiniBrowserLib.dll!MainWindow::~MainWindow() Line 95	C++
> MiniBrowserLib.dll!WTF::RefCounted<MainWindow>::deref() Line 145	C++
> MiniBrowserLib.dll!WTF::derefIfNotNull<MainWindow>(MainWindow * ptr) Line 45	C++
> MiniBrowserLib.dll!WTF::RefPtr<MainWindow,WTF::DumbPtrTraits<MainWindow> >::~RefPtr() Line 69	C++
> MiniBrowserLib.dll!MainWindow::WndProc(HWND__ * hWnd, unsigned int message, unsigned __int64 wParam, __int64 lParam) Line 270	C++
> [External Code]	
> WebKit2.dll!WebCore::WindowMessageBroadcaster::SubclassedWndProc(HWND__ * hwnd, unsigned int message, unsigned __int64 wParam, __int64 lParam) Line 123	C++
> [External Code]	
> WebKit.dll!WebKitMessageLoop::run(HACCEL__ * hAccelTable) Line 94	C++
> MiniBrowserLib.dll!wWinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpstrCmdLine, int nCmdShow) Line 97	C++
> MiniBrowserLib.dll!dllLauncherEntryPoint(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpstrCmdLine, int nCmdShow) Line 115	C++
> MiniBrowser.exe!wWinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpstrCmdLine, int nCmdShow) Line 232	C++
> [External Code]

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