[Webkit-unassigned] [Bug 59328] New: Crash beneath WKURLIsEqual() when reloading in MiniBrowser

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=59328

           Summary: Crash beneath WKURLIsEqual() when reloading in
                    MiniBrowser
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.6
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitz at webkit.org
                CC: andersca at apple.com, sam at webkit.org


Steps to reproduce:
Run MiniBrowser
After the WebKit Open Source Project webpage loads, click the Reload button several times

Result:

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   com.apple.WebKit2                 0x0000000100022658 WTF::RefPtr<WTF::StringImpl>::get() const + 12 (RefPtr.h:60)
1   com.apple.WebKit2                 0x000000010005d999 WTF::String::impl() const + 21 (WTFString.h:126)
2   com.apple.WebKit2                 0x000000010005fbb4 WTF::operator==(WTF::String const&, WTF::String const&) + 38 (WTFString.h:365)
3   com.apple.WebKit2                 0x0000000100156429 WKURLIsEqual + 65 (WKURL.cpp:50)
4   com.yourcompany.MiniBrowser       0x0000000100003f7d -[BrowserWindowController updateProvisionalURLForFrame:] + 81 (BrowserWindowController.m:684)
5   com.apple.WebKit2                 0x000000010008b6fc WebKit::WebLoaderClient::didFailLoadWithErrorForFrame(WebKit::WebPageProxy*, WebKit::WebFrameProxy*, WebCore::ResourceError const&, WebKit::APIObject*) + 142 (WebLoaderClient.cpp:91)
6   com.apple.WebKit2                 0x00000001000a8421 WebKit::WebPageProxy::didFailLoadForFrame(unsigned long long, WebCore::ResourceError const&, CoreIPC::ArgumentDecoder*) + 273 (WebPageProxy.cpp:1612)
7   com.apple.WebKit2                 0x000000010016b2f0 void CoreIPC::callMemberFunction<WebKit::WebPageProxy, void (WebKit::WebPageProxy::*)(unsigned long long, WebCore::ResourceError const&, CoreIPC::ArgumentDecoder*), unsigned long long, WebCore::ResourceError>(CoreIPC::Arguments2<unsigned long long, WebCore::ResourceError> const&, CoreIPC::ArgumentDecoder*, WebKit::WebPageProxy*, void (WebKit::WebPageProxy::*)(unsigned long long, WebCore::ResourceError const&, CoreIPC::ArgumentDecoder*)) + 114 (HandleMessage.h:204)
8   com.apple.WebKit2                 0x0000000100172fd3 void CoreIPC::handleMessageVariadic<Messages::WebPageProxy::DidFailLoadForFrame, WebKit::WebPageProxy, void (WebKit::WebPageProxy::*)(unsigned long long, WebCore::ResourceError const&, CoreIPC::ArgumentDecoder*)>(CoreIPC::ArgumentDecoder*, WebKit::WebPageProxy*, void (WebKit::WebPageProxy::*)(unsigned long long, WebCore::ResourceError const&, CoreIPC::ArgumentDecoder*)) + 83 (HandleMessage.h:286)
9   com.apple.WebKit2                 0x0000000100169bcb WebKit::WebPageProxy::didReceiveWebPageProxyMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) + 2777 (WebPageProxyMessageReceiver.cpp:180)
10  com.apple.WebKit2                 0x00000001000a96ef WebKit::WebPageProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) + 251 (WebPageProxy.cpp:1352)
11  com.apple.WebKit2                 0x00000001000ec99b WebKit::WebProcessProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) + 327 (WebProcessProxy.cpp:261)
12  com.apple.WebKit2                 0x0000000100016aee CoreIPC::Connection::dispatchMessage(CoreIPC::Connection::Message<CoreIPC::ArgumentDecoder>&) + 292 (Connection.cpp:646)
13  com.apple.WebKit2                 0x0000000100016c39 CoreIPC::Connection::dispatchMessages() + 105 (Connection.cpp:667)
14  com.apple.WebKit2                 0x00000001000190fd MemberFunctionWorkItem0<CoreIPC::Connection>::execute() + 109 (WorkItem.h:76)
15  com.apple.WebKit2                 0x0000000100052e25 RunLoop::performWork() + 119 (RunLoop.cpp:61)
16  com.apple.WebKit2                 0x0000000100053f41 RunLoop::performWork(void*) + 93 (RunLoopMac.mm:38)
17  com.apple.CoreFoundation          0x00007fff8593e401 __CFRunLoopDoSources0 + 1361
18  com.apple.CoreFoundation          0x00007fff8593c5f9 __CFRunLoopRun + 873
19  com.apple.CoreFoundation          0x00007fff8593bdbf CFRunLoopRunSpecific + 575
20  com.apple.HIToolbox               0x00007fff861f07ee RunCurrentEventLoopInMode + 333
21  com.apple.HIToolbox               0x00007fff861f05f3 ReceiveNextEventCommon + 310
22  com.apple.HIToolbox               0x00007fff861f04ac BlockUntilNextEventMatchingListInMode + 59
23  com.apple.AppKit                  0x00007fff8718be64 _DPSNextEvent + 718
24  com.apple.AppKit                  0x00007fff8718b7a9 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
25  com.apple.AppKit                  0x00007fff8715148b -[NSApplication run] + 395
26  com.apple.AppKit                  0x00007fff8714a1a8 NSApplicationMain + 364
27  com.yourcompany.MiniBrowser       0x0000000100001c84 start + 52

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