[Webkit-unassigned] [Bug 123567] New: ASSERTION FAILED: isEditablePosition(*this) in WebCore::Position::leadingWhitespacePosition

Thu Oct 31 06:55:30 PDT 2013

https://bugs.webkit.org/show_bug.cgi?id=123567

           Summary: ASSERTION FAILED: isEditablePosition(*this) in
                    WebCore::Position::leadingWhitespacePosition
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: reni at webkit.org
            Blocks: 116980

Created an attachment (id=215650)
 --> (https://bugs.webkit.org/attachment.cgi?id=215650&action=review)
Test case

ASSERTION fail happens if we try to modify the read-only <hr> tag.

The test:

<hr style="-webkit-user-modify: read-only" >
<body onload="document.designMode='on';     
              document.execCommand('selectall');     
              document.execCommand('inserthtml', false);">
</body>

Backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff5d23529 in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342
342        *(int *)(uintptr_t)0xbbadbeef = 0;
(gdb) bt
#0  0x00007ffff5d23529 in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342
#1  0x00007ffff146ab1e in WebCore::Position::leadingWhitespacePosition (this=0x11d8b48, affinity=WebCore::DOWNSTREAM, 
    considerNonCollapsibleWhitespace=false) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Position.cpp:1059
#2  0x00007ffff14d28b9 in WebCore::DeleteSelectionCommand::initializePositionData (this=0x11d8a10)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/DeleteSelectionCommand.cpp:229
#3  0x00007ffff14d6b47 in WebCore::DeleteSelectionCommand::doApply (this=0x11d8a10)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/DeleteSelectionCommand.cpp:832
#4  0x00007ffff14c297c in WebCore::CompositeEditCommand::applyCommandToComposite (this=0x1213920, prpCommand=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/CompositeEditCommand.cpp:264
#5  0x00007ffff14c4dfc in WebCore::CompositeEditCommand::deleteSelection (this=0x1213920, smartDelete=false, mergeBlocksAfterDelete=true, replace=true, 
    expandForSpecialElements=false, sanitizeMarkup=true) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/CompositeEditCommand.cpp:582
#6  0x00007ffff152526c in WebCore::ReplaceSelectionCommand::doApply (this=0x1213920)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/ReplaceSelectionCommand.cpp:949
#7  0x00007ffff14c273c in WebCore::CompositeEditCommand::apply (this=0x1213920)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/CompositeEditCommand.cpp:213
#8  0x00007ffff14c2534 in WebCore::applyCommand (command=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/CompositeEditCommand.cpp:172
#9  0x00007ffff14f75a3 in WebCore::executeInsertFragment (frame=..., fragment=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/EditorCommand.cpp:197
#10 0x00007ffff14f8c97 in WebCore::executeInsertHTML (frame=..., value=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/EditorCommand.cpp:504
#11 0x00007ffff14fc0a1 in WebCore::Editor::Command::execute (this=0x7fffffffbaf0, parameter=..., triggeringEvent=0x0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/editing/EditorCommand.cpp:1717
#12 0x00007ffff13c2c50 in WebCore::Document::execCommand (this=0x11f10d0, commandName=..., userInterface=false, value=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:4110
#13 0x00007ffff21c14a3 in WebCore::jsDocumentPrototypeFunctionExecCommand (exec=0x7fff945edf48)
    at /home/reni/Data/REPOS/webkit_sec/WebKitBuild/Debug/DerivedSources/WebCore/JSDocument.cpp:2762
#14 0x00007fff9e53d105 in ?? ()
#15 0x00007fffffffbc30 in ?? ()
#16 0x00007ffff5d2255b in llint_op_call () from /home/reni/Data/REPOS/webkit_sec/WebKitBuild/Debug/lib/libjavascriptcore_efl.so.0
#17 0x00007fff9e53d940 in ?? ()
#18 0x0000000001175918 in ?? ()
#19 0x000000000117ee70 in ?? ()
#20 0x00007fffee3779a0 in thread_context_stack () from /home/reni/Data/REPOS/webkit_sec/WebKitBuild/Dependencies/Root/lib64/libglib-2.0.so.0
#21 0x0000000000614470 in ?? ()
#22 0x00007ffff1852ac6 in WebCore::ResourceLoader::didReceiveBuffer (this=0x7fffffffbc30, buffer=..., encodedDataLength=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/ResourceLoader.cpp:483
#23 0x00007fffffffbc80 in ?? ()
#24 0x00007ffff5b143be in JSC::JITCode::execute (this=0x48ff5b670be8c789, stack=0x48e0458d48d4ff41, callFrame=0xc78948da89480000, vm=0x1b9c8458b48e0)
    at /home/reni/Data/REPOS/webkit_sec/Source/JavaScriptCore/jit/JITCode.cpp:46
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

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