[Webkit-unassigned] [Bug 174358] New: ASSERTION FAILED: isEditablePosition(editingPosition) in WebCore::CompositeEditCommand::insertNodeAt

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Jul 11 05:30:29 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=174358

            Bug ID: 174358
           Summary: ASSERTION FAILED: isEditablePosition(editingPosition)
                    in WebCore::CompositeEditCommand::insertNodeAt
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: hodovan at inf.u-szeged.hu
                CC: wenson_hsieh at apple.com

Load the attached test with debug WebKitTestRunner:

Checked version: 6700d3c
OS: macOS Sierra (10.12.5)

<head><script>window.onload = function() {
document.execCommand ('selectAll')
document.designMode = 'on'
document.execCommand ('indent')
}</script><style>& {
&
}
* {
display: table-cell;
}
@&
&
&{}_, * {

-webkit-border-before-style : dashed;}}
</style></a><a contenteditable="false"></a><a><a>

Backtrace:

ASSERTION FAILED: isEditablePosition(editingPosition)
WebKit/Source/WebCore/editing/CompositeEditCommand.cpp(545) : void WebCore::CompositeEditCommand::insertNodeAt(Ref<WebCore::Node> &&, const WebCore::Position &)
1   0x12f9d9d11 WTFCrash
2   0x1146f4f9c WebCore::CompositeEditCommand::insertNodeAt(WTF::Ref<WebCore::Node>&&, WebCore::Position const&)
3   0x116527150 WebCore::IndentOutdentCommand::indentIntoBlockquote(WebCore::Position const&, WebCore::Position const&, WTF::RefPtr<WebCore::Element>&)
4   0x116528d8c WebCore::IndentOutdentCommand::formatRange(WebCore::Position const&, WebCore::Position const&, WebCore::Position const&, WTF::RefPtr<WebCore::Element>&)
5   0x1140af6b1 WebCore::ApplyBlockElementCommand::formatSelection(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&)
6   0x116528cff WebCore::IndentOutdentCommand::formatSelection(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&)
7   0x1140ae208 WebCore::ApplyBlockElementCommand::doApply()
8   0x1146f1d0a WebCore::CompositeEditCommand::apply()
9   0x115443696 WebCore::executeIndent(WebCore::Frame&, WebCore::Event*, WebCore::EditorCommandSource, WTF::String const&)
10  0x11543f64c WebCore::Editor::Command::execute(WTF::String const&, WebCore::Event*) const
11  0x1150a07b2 WebCore::Document::execCommand(WTF::String const&, bool, WTF::String const&)
12  0x116da2c19 WebCore::jsDocumentPrototypeFunctionExecCommandBody(JSC::ExecState*, WebCore::JSDocument*, JSC::ThrowScope&)
13  0x116d568ca long long WebCore::IDLOperation<WebCore::JSDocument>::call<&(WebCore::jsDocumentPrototypeFunctionExecCommandBody(JSC::ExecState*, WebCore::JSDocument*, JSC::ThrowScope&)), (WebCore::CastedThisErrorBehavior)0>(JSC::ExecState&, char const*)
14  0x116d564dc WebCore::jsDocumentPrototypeFunctionExecCommand(JSC::ExecState*)
15  0x2ea20ce01028
16  0x12ed93cf3 llint_entry
17  0x12ed8c357 vmEntryToJavaScript
18  0x12e799510 JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*)
19  0x12e6a88d4 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
20  0x12cf5dfdb JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
21  0x12cf5e558 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
22  0x12cf5f0ce JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
23  0x116abbd91 WebCore::JSMainThreadExecState::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
24  0x1173330ba WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*)
25  0x11555adda WebCore::EventTarget::fireEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener>, 1ul, WTF::CrashOnOverflow, 16ul>)
26  0x11555a606 WebCore::EventTarget::fireEventListeners(WebCore::Event&)
27  0x11531522b WebCore::DOMWindow::dispatchEvent(WebCore::Event&, WebCore::EventTarget*)
28  0x115333167 WebCore::DOMWindow::dispatchLoadEvent()
29  0x11508171d WebCore::Document::dispatchWindowLoadEvent()
30  0x115073d02 WebCore::Document::implicitClose()
31  0x1159eda03 WebCore::FrameLoader::checkCallImplicitClose()
ASAN:DEADLYSIGNAL
=================================================================
==68891==ERROR: AddressSanitizer: SEGV on unknown address 0x0000bbadbeef (pc 0x00012f9d9d49 bp 0x7fff5babd590 sp 0x7fff5babd580 T0)
    #0 0x12f9d9d48 in WTFCrash (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x3540d48)
    #1 0x1146f4f9b in WebCore::CompositeEditCommand::insertNodeAt(WTF::Ref<WebCore::Node>&&, WebCore::Position const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x8b5f9b)
    #2 0x11652714f in WebCore::IndentOutdentCommand::indentIntoBlockquote(WebCore::Position const&, WebCore::Position const&, WTF::RefPtr<WebCore::Element>&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x26e814f)
    #3 0x116528d8b in WebCore::IndentOutdentCommand::formatRange(WebCore::Position const&, WebCore::Position const&, WebCore::Position const&, WTF::RefPtr<WebCore::Element>&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x26e9d8b)
    #4 0x1140af6b0 in WebCore::ApplyBlockElementCommand::formatSelection(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2706b0)
    #5 0x116528cfe in WebCore::IndentOutdentCommand::formatSelection(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x26e9cfe)
    #6 0x1140ae207 in WebCore::ApplyBlockElementCommand::doApply() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x26f207)
    #7 0x1146f1d09 in WebCore::CompositeEditCommand::apply() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x8b2d09)
    #8 0x115443695 in WebCore::executeIndent(WebCore::Frame&, WebCore::Event*, WebCore::EditorCommandSource, WTF::String const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1604695)
    #9 0x11543f64b in WebCore::Editor::Command::execute(WTF::String const&, WebCore::Event*) const (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x160064b)
    #10 0x1150a07b1 in WebCore::Document::execCommand(WTF::String const&, bool, WTF::String const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x12617b1)
    #11 0x116da2c18 in WebCore::jsDocumentPrototypeFunctionExecCommandBody(JSC::ExecState*, WebCore::JSDocument*, JSC::ThrowScope&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2f63c18)
    #12 0x116d568c9 in long long WebCore::IDLOperation<WebCore::JSDocument>::call<&(WebCore::jsDocumentPrototypeFunctionExecCommandBody(JSC::ExecState*, WebCore::JSDocument*, JSC::ThrowScope&)), (WebCore::CastedThisErrorBehavior)0>(JSC::ExecState&, char const*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2f178c9)
    #13 0x116d564db in WebCore::jsDocumentPrototypeFunctionExecCommand(JSC::ExecState*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2f174db)
    #14 0x2ea20ce01027  (<unknown module>)
    #15 0x12ed93cf2 in llint_entry (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x28facf2)
    #16 0x12ed8c356 in vmEntryToJavaScript (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x28f3356)
    #17 0x12e79950f in JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x230050f)
    #18 0x12e6a88d3 in JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x220f8d3)
    #19 0x12cf5dfda in JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0xac4fda)
    #20 0x12cf5e557 in JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0xac5557)
    #21 0x12cf5f0cd in JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0xac60cd)
    #22 0x116abbd90 in WebCore::JSMainThreadExecState::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2c7cd90)
    #23 0x1173330b9 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x34f40b9)
    #24 0x11555add9 in WebCore::EventTarget::fireEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener>, 1ul, WTF::CrashOnOverflow, 16ul>) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x171bdd9)
    #25 0x11555a605 in WebCore::EventTarget::fireEventListeners(WebCore::Event&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x171b605)
    #26 0x11531522a in WebCore::DOMWindow::dispatchEvent(WebCore::Event&, WebCore::EventTarget*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x14d622a)
    #27 0x115333166 in WebCore::DOMWindow::dispatchLoadEvent() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x14f4166)
    #28 0x11508171c in WebCore::Document::dispatchWindowLoadEvent() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x124271c)
    #29 0x115073d01 in WebCore::Document::implicitClose() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1234d01)
    #30 0x1159eda02 in WebCore::FrameLoader::checkCallImplicitClose() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1baea02)
    #31 0x1159ed182 in WebCore::FrameLoader::checkCompleted() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1bae182)
    #32 0x1159e923b in WebCore::FrameLoader::finishedParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1baa23b)
    #33 0x1150a526c in WebCore::Document::finishedParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x126626c)
    #34 0x115e4d3e5 in WebCore::HTMLConstructionSite::finishedParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x200e3e5)
    #35 0x116164bb7 in WebCore::HTMLTreeBuilder::finished() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2325bb7)
    #36 0x115ec7c9b in WebCore::HTMLDocumentParser::end() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2088c9b)
    #37 0x115ec2366 in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2083366)
    #38 0x115ec1f1d in WebCore::HTMLDocumentParser::prepareToStopParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2082f1d)
    #39 0x115ec7dbb in WebCore::HTMLDocumentParser::attemptToEnd() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2088dbb)
    #40 0x115ec7ef7 in WebCore::HTMLDocumentParser::finish() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x2088ef7)
    #41 0x11527b59f in WebCore::DocumentWriter::end() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x143c59f)
    #42 0x1151c5756 in WebCore::DocumentLoader::finishedLoading() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1386756)
    #43 0x1151c5152 in WebCore::DocumentLoader::notifyFinished(WebCore::CachedResource&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1386152)
    #44 0x11447d1e3 in WebCore::CachedResource::checkNotify() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x63e1e3)
    #45 0x11447d873 in WebCore::CachedResource::finishLoading(WebCore::SharedBuffer*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x63e873)
    #46 0x11446e301 in WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x62f301)
    #47 0x11aaa2211 in WebCore::SubresourceLoader::didFinishLoading(WebCore::NetworkLoadMetrics const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x6c63211)
    #48 0x10608e3fb in WebKit::WebResourceLoader::didFinishResourceLoad(WebCore::NetworkLoadMetrics const&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f383fb)
    #49 0x10609b149 in void IPC::callMemberFunctionImpl<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&), std::__1::tuple<WebCore::NetworkLoadMetrics>, 0ul>(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&), std::__1::tuple<WebCore::NetworkLoadMetrics>&&, std::__1::integer_sequence<unsigned long, 0ul>) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f45149)
    #50 0x10609ad54 in void IPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&), std::__1::tuple<WebCore::NetworkLoadMetrics>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<WebCore::NetworkLoadMetrics>&&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f44d54)
    #51 0x106097df8 in void IPC::handleMessage<Messages::WebResourceLoader::DidFinishResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&)>(IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f41df8)
    #52 0x106095fba in WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f3ffba)
    #53 0x104a0bfcc in WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x8b5fcc)
    #54 0x10436184a in IPC::Connection::dispatchMessage(IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x20b84a)
    #55 0x104345ea4 in IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1efea4)
    #56 0x104362535 in IPC::Connection::dispatchOneMessage() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x20c535)
    #57 0x1043a113c in IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x24b13c)
    #58 0x1043a1068 in WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x24b068)
    #59 0x12fa66600 in WTF::Function<void ()>::operator()() const (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x35cd600)
    #60 0x12fab5296 in WTF::RunLoop::performWork() (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x361c296)
    #61 0x12fab63d1 in WTF::RunLoop::performWork(void*) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x361d3d1)
    #62 0x7fffabc81320 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0xa7320)
    #63 0x7fffabc6221c in __CFRunLoopDoSources0 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x8821c)
    #64 0x7fffabc61715 in __CFRunLoopRun (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x87715)
    #65 0x7fffabc61113 in CFRunLoopRunSpecific (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x87113)
    #66 0x7fffab1c2ebb in RunCurrentEventLoopInMode (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x30ebb)
    #67 0x7fffab1c2cf0 in ReceiveNextEventCommon (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x30cf0)
    #68 0x7fffab1c2b25 in _BlockUntilNextEventMatchingListInModeWithFilter (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x30b25)
    #69 0x7fffa975ba53 in _DPSNextEvent (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x46a53)
    #70 0x7fffa9ed77ed in -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x7c27ed)
    #71 0x7fffa97503da in -[NSApplication run] (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x3b3da)
    #72 0x7fffa971ae0d in NSApplicationMain (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x5e0d)
    #73 0x7fffc16348c6 in _xpc_objc_main (/usr/lib/system/libxpc.dylib+0x108c6)
    #74 0x7fffc16332e3 in xpc_main (/usr/lib/system/libxpc.dylib+0xf2e3)
    #75 0x10413af22 in main (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development+0x100001f22)
    #76 0x7fffc13db234 in start (/usr/lib/system/libdyld.dylib+0x5234)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x3540d48) in WTFCrash
==68891==ABORTING
#CRASHED - com.apple.WebKit.WebContent.Development (pid 68891)
LEAK: 1 WebProcessPool
LEAK: 1 WebPageProxy

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