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<head>
<base href="https://bugs.webkit.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Null dereference loading Blink layout test editing/execCommand/indent-nested-blockquotes-crash.html"
href="https://bugs.webkit.org/show_bug.cgi?id=149291">149291</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Null dereference loading Blink layout test editing/execCommand/indent-nested-blockquotes-crash.html
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>BlinkMergeCandidate, HasReduction, NeedsRadar
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>HTML Editing
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jhoneycutt@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>webkit-bug-importer@group.apple.com
</td>
</tr></table>
<p>
<div>
<pre>Null dereference loading Blink layout test editing/execCommand/indent-nested-blockquotes-crash.html.
Stack trace:
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000048
Exception Note: EXC_CORPSE_NOTIFY
VM Regions Near 0x48:
-->
__TEXT 000000010b1d4000-000000010b1d6000 [ 8K] r-x/rwx SM=COW /Users/USER/*/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.Development.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development
Application Specific Information:
CRASHING TEST: temp-tests/editing/execCommand/indent-nested-blockquotes-crash.html
Global Trace Buffer (reverse chronological seconds):
18446743998.232010 CFNetwork 0x00007fff88d43b97 Explicitly setting CF cookie storage singleton
18446743998.232620 CFNetwork 0x00007fff88d8f211 Explicitly setting cookie storage singleton
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x0000000113002b73 WebCore::CompositeEditCommand::insertNodeAfter(WTF::PassRefPtr<WebCore::Node>, WTF::PassRefPtr<WebCore::Node>) + 19 (CompositeEditCommand.cpp:357)
1 com.apple.WebCore 0x0000000113009547 WebCore::CompositeEditCommand::cloneParagraphUnderNewElement(WebCore::Position const&, WebCore::Position const&, WebCore::Node*, WebCore::Element*) + 1543 (StdLibExtras.h:367)
2 com.apple.WebCore 0x0000000113009e2d WebCore::CompositeEditCommand::moveParagraphWithClones(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&, WebCore::Element*, WebCore::Node*) + 621 (CompositeEditCommand.cpp:1176)
3 com.apple.WebCore 0x0000000113465755 WebCore::IndentOutdentCommand::indentIntoBlockquote(WebCore::Position const&, WebCore::Position const&, WTF::RefPtr<WebCore::Element>&) + 901 (StdLibExtras.h:366)
4 com.apple.WebCore 0x0000000112f4b605 WebCore::ApplyBlockElementCommand::formatSelection(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&) + 4677 (ApplyBlockElementCommand.cpp:145)
5 com.apple.WebCore 0x0000000112f4a04d WebCore::ApplyBlockElementCommand::doApply() + 1037 (Ref.h:123)
6 com.apple.WebCore 0x0000000113002216 WebCore::CompositeEditCommand::apply() + 102 (ScopedEventQueue.h:71)
7 com.apple.WebCore 0x0000000113235c4b WebCore::executeIndent(WebCore::Frame&, WebCore::Event*, WebCore::EditorCommandSource, WTF::String const&) + 59 (StdLibExtras.h:366)
8 com.apple.WebCore 0x0000000113234876 WebCore::Editor::Command::execute(WTF::String const&, WebCore::Event*) const + 182 (EditorCommand.cpp:1704)
9 com.apple.WebCore 0x000000011316dc36 WebCore::Document::execCommand(WTF::String const&, bool, WTF::String const&) + 214 (Document.cpp:4666)
10 com.apple.WebCore 0x0000000113584074 WebCore::jsDocumentPrototypeFunctionExecCommand(JSC::ExecState*) + 420 (JSCJSValue.h:499)
11 ??? 0x0000339671001028 0 + 56721233940520
12 com.apple.JavaScriptCore 0x00000001128e076f llint_entry + 22696
13 com.apple.JavaScriptCore 0x00000001128dace4 vmEntryToJavaScript + 299
14 com.apple.JavaScriptCore 0x000000011279b2d9 JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169 (JITCode.cpp:82)
15 com.apple.JavaScriptCore 0x0000000112781d12 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 450 (Interpreter.cpp:1008)
16 com.apple.JavaScriptCore 0x000000011244d8b7 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) + 71 (MarkedBlock.h:241)
17 com.apple.WebCore 0x0000000113608fa4 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 996 (JSMainThreadExecState.h:56)
18 com.apple.WebCore 0x000000011326f4db WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul, WTF::CrashOnOverflow, 16ul>&) + 635 (InspectorInstrumentation.h:285)
19 com.apple.WebCore 0x000000011326f1a0 WebCore::EventTarget::fireEventListeners(WebCore::Event*) + 224 (EventTarget.cpp:208)
20 com.apple.WebCore 0x00000001131fbbf4 WebCore::DOMWindow::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, WTF::PassRefPtr<WebCore::EventTarget>) + 260 (DOMWindow.cpp:1900)
21 com.apple.WebCore 0x000000011320130b WebCore::DOMWindow::dispatchLoadEvent() + 347 (StdLibExtras.h:366)
22 com.apple.WebCore 0x0000000113164294 WebCore::Document::implicitClose() + 324 (Document.cpp:4077)
23 com.apple.WebCore 0x00000001132f1003 WebCore::FrameLoader::checkCompleted() + 275 (FrameLoader.cpp:839)
24 com.apple.WebCore 0x00000001132ef95b WebCore::FrameLoader::finishedParsing() + 123 (FrameLoader.cpp:760)
25 com.apple.WebCore 0x000000011316f281 WebCore::Document::finishedParsing() + 417 (Frame.h:377)
26 com.apple.WebCore 0x000000011339be05 WebCore::HTMLDocumentParser::prepareToStopParsing() + 165 (RefCounted.h:99)
27 com.apple.WebCore 0x000000011319f69a WebCore::DocumentWriter::end() + 58 (StdLibExtras.h:366)
28 com.apple.WebCore 0x00000001131879ec WebCore::DocumentLoader::finishedLoading(double) + 268 (ResourceErrorBase.h:42)
29 com.apple.WebCore 0x0000000112fb8179 WebCore::CachedResource::checkNotify() + 153 (CachedResourceClientWalker.h:51)
30 com.apple.WebCore 0x0000000112fb4433 WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) + 227 (CachedRawResource.cpp:104)
31 com.apple.WebCore 0x0000000113d2f501 WebCore::SubresourceLoader::didFinishLoading(double) + 1153 (ResourceLoader.h:154)
32 com.apple.WebKit 0x000000011187598d WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::MessageDecoder&) + 561 (HandleMessage.h:16)
33 com.apple.WebKit 0x000000011164f1f1 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::MessageDecoder, std::__1::default_delete<IPC::MessageDecoder> >) + 127 (memory:2636)
34 com.apple.WebKit 0x0000000111651b4a IPC::Connection::dispatchOneMessage() + 126 (memory:2656)
35 com.apple.JavaScriptCore 0x0000000112a93985 WTF::RunLoop::performWork() + 437 (functional:1742)
36 com.apple.JavaScriptCore 0x0000000112a93d32 WTF::RunLoop::performWork(void*) + 34 (RunLoopCF.cpp:39)
37 com.apple.CoreFoundation 0x00007fff949e2c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
38 com.apple.CoreFoundation 0x00007fff949d4b1c __CFRunLoopDoSources0 + 556
39 com.apple.CoreFoundation 0x00007fff949d403f __CFRunLoopRun + 927
40 com.apple.CoreFoundation 0x00007fff949d3a38 CFRunLoopRunSpecific + 296
41 com.apple.HIToolbox 0x00007fff88e673bd RunCurrentEventLoopInMode + 235
42 com.apple.HIToolbox 0x00007fff88e67153 ReceiveNextEventCommon + 432
43 com.apple.HIToolbox 0x00007fff88e66f93 _BlockUntilNextEventMatchingListInModeWithFilter + 71
44 com.apple.AppKit 0x00007fff870b81e7 _DPSNextEvent + 1076
45 com.apple.AppKit 0x00007fff8748490d -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
46 com.apple.AppKit 0x00007fff870ae0b8 -[NSApplication run] + 682
47 com.apple.AppKit 0x00007fff87030396 NSApplicationMain + 1176
48 libxpc.dylib 0x00007fff8c70ff70 _xpc_objc_main + 793
49 libxpc.dylib 0x00007fff8c7116bf xpc_main + 494
50 com.apple.WebKit.WebContent.Development 0x000000010b1d5424 main + 409 (XPCServiceMain.Development.mm:187)
51 libdyld.dylib 0x00007fff93aa15ad start + 1</pre>
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