[Webkit-unassigned] [Bug 151092] New: ASSERTION FAILED: m_atChild->parentNode() == m_element2 in WebCore::SplitElementCommand::SplitElementCommand

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151092

            Bug ID: 151092
           Summary: ASSERTION FAILED: m_atChild->parentNode() ==
                    m_element2 in
                    WebCore::SplitElementCommand::SplitElementCommand
    Classification: Unclassified
           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: rhodovan.u-szeged at partner.samsung.com
            Blocks: 116980

Created attachment 265172
  --> https://bugs.webkit.org/attachment.cgi?id=265172&action=review
Test

Load the attached test with debug MiniBrowser:

<blockquote>
    <font>
        <style>
        * {
            border-top-style:inset;
            -webkit-flow-into:flow_3
        }
        </style>
        a
        <script>
            document.designMode = 'on';
            document.execCommand("selectAll", null);
            document.execCommand("overwrite" , null);
            document.execCommand("outdent" , null);
        </script>
    </font>
</blockquote>


OS: Ubuntu 14.10 x86_64
Checked build: debug EFL
Checked version: 9fa8210


Backtrace:

ASSERTION FAILED: m_atChild->parentNode() == m_element2
../../Source/WebCore/editing/SplitElementCommand.cpp(42) : WebCore::SplitElementCommand::SplitElementCommand(WTF::PassRefPtr<WebCore::Element>, WTF::PassRefPtr<WebCore::Node>)
1   0x7f3028447e17 WTFCrash
2   0x7f302f89b127 WebCore::SplitElementCommand::SplitElementCommand(WTF::PassRefPtr<WebCore::Element>, WTF::PassRefPtr<WebCore::Node>)
3   0x7f302f87bf16 WebCore::SplitElementCommand::create(WTF::PassRefPtr<WebCore::Element>, WTF::PassRefPtr<WebCore::Node>)
4   0x7f302f871e75 WebCore::CompositeEditCommand::splitElement(WTF::PassRefPtr<WebCore::Element>, WTF::PassRefPtr<WebCore::Node>)
5   0x7f302e6edb9b WebCore::IndentOutdentCommand::outdentParagraph()
6   0x7f302e6ee45e WebCore::IndentOutdentCommand::outdentRegion(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&)
7   0x7f302e6ee8e4 WebCore::IndentOutdentCommand::formatSelection(WebCore::VisiblePosition const&, WebCore::VisiblePosition const&)
8   0x7f302f859bd8 WebCore::ApplyBlockElementCommand::doApply()
9   0x7f302f86fd8a WebCore::CompositeEditCommand::apply()
10  0x7f302f86fb3b WebCore::applyCommand(WTF::PassRefPtr<WebCore::CompositeEditCommand>)
11  0x7f302e6d6830
12  0x7f302e6d8cde WebCore::Editor::Command::execute(WTF::String const&, WebCore::Event*) const
13  0x7f302e57d46d WebCore::Document::execCommand(WTF::String const&, bool, WTF::String const&)
14  0x7f302fcaf06b WebCore::jsDocumentPrototypeFunctionExecCommand(JSC::ExecState*)
15  0x7f2fcffff0c8
Aborted (core dumped)

Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f3028447e1c in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321
321     *(int *)(uintptr_t)0xbbadbeef = 0;
#0  0x00007f3028447e1c in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321
#1  0x00007f302f89b127 in WebCore::SplitElementCommand::SplitElementCommand (this=0x7f301676f1c0, element=..., atChild=...) at ../../Source/WebCore/editing/SplitElementCommand.cpp:42
#2  0x00007f302f87bf16 in WebCore::SplitElementCommand::create (element=..., splitPointChild=...) at ../../Source/WebCore/editing/SplitElementCommand.h:37
#3  0x00007f302f871e75 in WebCore::CompositeEditCommand::splitElement (this=0x7f3016693000, element=..., atChild=...) at ../../Source/WebCore/editing/CompositeEditCommand.cpp:481
#4  0x00007f302e6edb9b in WebCore::IndentOutdentCommand::outdentParagraph (this=0x7f3016693000) at ../../Source/WebCore/editing/IndentOutdentCommand.cpp:179
#5  0x00007f302e6ee45e in WebCore::IndentOutdentCommand::outdentRegion (this=0x7f3016693000, startOfSelection=..., endOfSelection=...) at ../../Source/WebCore/editing/IndentOutdentCommand.cpp:207
#6  0x00007f302e6ee8e4 in WebCore::IndentOutdentCommand::formatSelection (this=0x7f3016693000, startOfSelection=..., endOfSelection=...) at ../../Source/WebCore/editing/IndentOutdentCommand.cpp:228
#7  0x00007f302f859bd8 in WebCore::ApplyBlockElementCommand::doApply (this=0x7f3016693000) at ../../Source/WebCore/editing/ApplyBlockElementCommand.cpp:86
#8  0x00007f302f86fd8a in WebCore::CompositeEditCommand::apply (this=0x7f3016693000) at ../../Source/WebCore/editing/CompositeEditCommand.cpp:227
#9  0x00007f302f86fb3b in WebCore::applyCommand (command=...) at ../../Source/WebCore/editing/CompositeEditCommand.cpp:186
#10 0x00007f302e6d6830 in WebCore::executeOutdent (frame=...) at ../../Source/WebCore/editing/EditorCommand.cpp:879
#11 0x00007f302e6d8cde in WebCore::Editor::Command::execute (this=0x7ffd2c125ad0, parameter=..., triggeringEvent=0x0) at ../../Source/WebCore/editing/EditorCommand.cpp:1703
#12 0x00007f302e57d46d in WebCore::Document::execCommand (this=0x7f3016426a40, commandName=..., userInterface=false, value=...) at ../../Source/WebCore/dom/Document.cpp:4657
#13 0x00007f302fcaf06b in WebCore::jsDocumentPrototypeFunctionExecCommand (state=0x7ffd2c125ba0) at DerivedSources/WebCore/JSDocument.cpp:5066
#14 0x00007f2fcffff0c8 in ?? ()
#15 0x00007ffd2c125c10 in ?? ()
#16 0x00007f30283f05e4 in llint_entry () from webkit/WebKitBuild/Debug/lib/libjavascriptcore_efl.so.1

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