[Webkit-unassigned] [Bug 199503] New: [iOS] Crash in WebKit::WebPage::positionInformation via Range::startPosition

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199503

            Bug ID: 199503
           Summary: [iOS] Crash in WebKit::WebPage::positionInformation
                    via Range::startPosition
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org
                CC: wenson_hsieh at apple.com

0   WebKit                              0x00000001bd8c5304 WebKit::WebPage::positionInformation(WebKit::InteractionInformationRequest const&) + 368 (Optional.h:371)
1   WebKit                              0x00000001bd8c5300 WebKit::WebPage::positionInformation(WebKit::InteractionInformationRequest const&) + 364 (WebPageIOS.mm:2517)
2   WebKit                              0x00000001bd8c510c WebKit::WebPage::getPositionInformation(WebKit::InteractionInformationRequest const&, WTF::CompletionHandler<void (WebKit::InteractionInformationAtPosition&&)>&&) + 76 (WebPageIOS.mm:2492)
3   WebKit                              0x00000001bd9fca78 void IPC::callMemberFunctionImpl<WebKit::WebPage, void (WebKit::WebPage::*)(WebKit::InteractionInformationRequest const&, WTF::CompletionHandler<void (WebKit::InteractionInformationAtPosition&&)>&&), void (WebKit::InteractionInformationAtPosition const&), std::__1::tuple<WebKit::InteractionInformationRequest>, 0ul>(WebKit::WebPage*, void (WebKit::WebPage::*)(WebKit::InteractionInformationRequest const&, WTF::CompletionHandler<void (WebKit::InteractionInformationAtPosition&&)>&&), WTF::CompletionHandler<void (WebKit::InteractionInformationAtPosition const&)>&&, std::__1::tuple<WebKit::InteractionInformationRequest>&&, std::__1::integer_sequence<unsigned long, 0ul>) + 100 (HandleMessage.h:55)
4   WebKit                              0x00000001bd9e8654 void IPC::handleMessageSynchronous<Messages::WebPage::GetPositionInformation, WebKit::WebPage, void (WebKit::WebPage::*)(WebKit::InteractionInformationRequest const&, WTF::CompletionHandler<void (WebKit::InteractionInformationAtPosition&&)>&&)>(IPC::Connection&, IPC::Decoder&, std::__1::unique_ptr<IPC::Encoder, std::__1::default_delete<IPC::Encoder> >&, WebKit::WebPage*, void (WebKit::WebPage::*)(WebKit::InteractionInformationRequest const&, WTF::CompletionHandler<void (WebKit::InteractionInformationAtPosition&&)>&&)) + 164 (HandleMessage.h:61)
5   WebKit                              0x00000001bd5b9924 IPC::MessageReceiverMap::dispatchSyncMessage(IPC::Connection&, IPC::Decoder&, std::__1::unique_ptr<IPC::Encoder, std::__1::default_delete<IPC::Encoder> >&) + 112 (MessageReceiverMap.cpp:0)
6   WebKit                              0x00000001bd904224 WebKit::WebProcess::didReceiveSyncMessage(IPC::Connection&, IPC::Decoder&, std::__1::unique_ptr<IPC::Encoder, std::__1::default_delete<IPC::Encoder> >&) + 40 (WebProcess.cpp:732)
7   WebKit                              0x00000001bd5a73f0 IPC::Connection::dispatchSyncMessage(IPC::Decoder&) + 196 (Connection.cpp:905)
8   WebKit                              0x00000001bd5a4128 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 136 (Connection.cpp:1008)
9   WebKit                              0x00000001bd5a7944 IPC::Connection::dispatchOneIncomingMessage() + 232 (Connection.cpp:1079)
10  JavaScriptCore                      0x00000001c8227534 WTF::RunLoop::performWork() + 276 (Function.h:79)
11  JavaScriptCore                      0x00000001c82277f4 WTF::RunLoop::performWork(void*) + 36 (RunLoopCF.cpp:38)

<rdar://problem/51597945>

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