[Webkit-unassigned] [Bug 119621] New: ASSERTION FAILED: !(lineMidpointState.numMidpoints % 2) in WebCore::startIgnoringSpaces

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Aug 9 05:14:06 PDT 2013 

https://bugs.webkit.org/show_bug.cgi?id=119621

           Summary: ASSERTION FAILED: !(lineMidpointState.numMidpoints %
                    2) in WebCore::startIgnoringSpaces
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: reni at webkit.org
            Blocks: 116980


The following svg tests fails on the above assertion check:

<svg xmlns="http://www.w3.org/2000/svg" >
        <text font-family="MS Mincho" y="60 80 100 120 140 160 180 200">
            <tspan>foo</tspan>
        </text>
</svg>


The backtrace:

Program received signal SIGSEGV, Segmentation fault.
b0x00007ffff56f53e4 in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342
342        *(int *)(uintptr_t)0xbbadbeef = 0;
(gdb) bt
#0  0x00007ffff56f53e4 in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342
#1  0x00007ffff485d428 in WebCore::startIgnoringSpaces (lineMidpointState=..., midpoint=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:444
#2  0x00007ffff485d54c in WebCore::ensureCharacterGetsLineBox (lineMidpointState=..., textParagraphSeparator=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:467
#3  0x00007ffff486bd06 in WebCore::RenderBlock::LineBreaker::nextSegmentBreak (this=0x7fffffffa2d0, resolver=..., lineInfo=..., renderTextInfo=..., 
    lastFloatFromPreviousLine=0x0, consecutiveHyphenatedLines=0, wordMeasurements=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:3392
#4  0x00007ffff4868b66 in WebCore::RenderBlock::LineBreaker::nextLineBreak (this=0x7fffffffa2d0, resolver=..., lineInfo=..., renderTextInfo=..., 
    lastFloatFromPreviousLine=0x0, consecutiveHyphenatedLines=0, wordMeasurements=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:2815
#5  0x00007ffff486359c in WebCore::RenderBlock::layoutRunsAndFloatsInRange (this=0x8b1878, layoutState=..., resolver=..., cleanLineStart=..., 
    cleanLineBidiStatus=..., consecutiveHyphenatedLines=0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:1845
#6  0x00007ffff4862093 in WebCore::RenderBlock::layoutRunsAndFloats (this=0x8b1878, layoutState=..., hasInlineChild=true)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:1614
#7  0x00007ffff48657ec in WebCore::RenderBlock::layoutInlineChildren (this=0x8b1878, relayoutChildren=true, repaintLogicalTop=..., repaintLogicalBottom=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:2189
#8  0x00007ffff4bd07b3 in WebCore::RenderBlock::forceLayoutInlineChildren (this=0x8b1878)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.h:591
#9  0x00007ffff4bd2372 in WebCore::RenderSVGText::layout (this=0x8b1878)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/svg/RenderSVGText.cpp:417
#10 0x00007ffff4bde14e in WebCore::SVGRenderSupport::layoutChildren (start=0x8b7ac8, selfNeedsLayout=true)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/svg/SVGRenderSupport.cpp:275
#11 0x00007ffff4bcd519 in WebCore::RenderSVGRoot::layout (this=0x8b7ac8)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/svg/RenderSVGRoot.cpp:243
#12 0x00007ffff47e433d in WebCore::RenderObject::layoutIfNeeded (this=0x8b7ac8)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderObject.h:704
#13 0x00007ffff48657aa in WebCore::RenderBlock::layoutInlineChildren (this=0x8945b8, relayoutChildren=true, repaintLogicalTop=..., repaintLogicalBottom=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlockLineLayout.cpp:2187
#14 0x00007ffff4819ad2 in WebCore::RenderBlock::layoutBlock (this=0x8945b8, relayoutChildren=true, pageLogicalHeight=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:1656
#15 0x00007ffff4818f05 in WebCore::RenderBlock::layout (this=0x8945b8) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:1428
#16 0x00007ffff481e334 in WebCore::RenderBlock::layoutBlockChild (this=0x7b2dd8, child=0x8945b8, marginInfo=..., previousFloatLogicalBottom=..., 
    maxFloatLogicalBottom=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:2669
#17 0x00007ffff481df2d in WebCore::RenderBlock::layoutBlockChildren (this=0x7b2dd8, relayoutChildren=true, maxFloatLogicalBottom=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:2604
#18 0x00007ffff4819af3 in WebCore::RenderBlock::layoutBlock (this=0x7b2dd8, relayoutChildren=true, pageLogicalHeight=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:1658
#19 0x00007ffff4818f05 in WebCore::RenderBlock::layout (this=0x7b2dd8) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:1428
#20 0x00007ffff481e334 in WebCore::RenderBlock::layoutBlockChild (this=0x76d4d8, child=0x7b2dd8, marginInfo=..., previousFloatLogicalBottom=..., 
    maxFloatLogicalBottom=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:2669
#21 0x00007ffff481df2d in WebCore::RenderBlock::layoutBlockChildren (this=0x76d4d8, relayoutChildren=true, maxFloatLogicalBottom=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:2604
#22 0x00007ffff4819af3 in WebCore::RenderBlock::layoutBlock (this=0x76d4d8, relayoutChildren=true, pageLogicalHeight=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:1658
#23 0x00007ffff4818f05 in WebCore::RenderBlock::layout (this=0x76d4d8) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderBlock.cpp:1428
#24 0x00007ffff49cdf15 in WebCore::RenderView::layoutContent (this=0x76d4d8, state=...)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderView.cpp:142
#25 0x00007ffff49cecd2 in WebCore::RenderView::layout (this=0x76d4d8) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderView.cpp:327
#26 0x00007ffff467a63a in WebCore::FrameView::layout (this=0x774700, allowSubtree=true)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/page/FrameView.cpp:1327
#27 0x00007ffff41b2e8f in WebCore::Document::implicitClose (this=0x87bb10) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:2452
#28 0x00007ffff45b349f in WebCore::FrameLoader::checkCallImplicitClose (this=0x7b0a48)
---Type <return> to continue, or q <return> to quit---
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/FrameLoader.cpp:844
#29 0x00007ffff45b3210 in WebCore::FrameLoader::checkCompleted (this=0x7b0a48) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/FrameLoader.cpp:787
#30 0x00007ffff45b2f45 in WebCore::FrameLoader::finishedParsing (this=0x7b0a48) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/FrameLoader.cpp:720
#31 0x00007ffff41b9e35 in WebCore::Document::finishedParsing (this=0x87bb10) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:4427
#32 0x00007ffff440ce97 in WebCore::HTMLConstructionSite::finishedParsing (this=0x7f31a8)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLConstructionSite.cpp:348
#33 0x00007ffff44415b9 in WebCore::HTMLTreeBuilder::finished (this=0x7f3190)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLTreeBuilder.cpp:2926
#34 0x00007ffff4414596 in WebCore::HTMLDocumentParser::end (this=0x774fd0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLDocumentParser.cpp:763
#35 0x00007ffff4414681 in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd (this=0x774fd0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLDocumentParser.cpp:774
#36 0x00007ffff44131f0 in WebCore::HTMLDocumentParser::prepareToStopParsing (this=0x774fd0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLDocumentParser.cpp:211
#37 0x00007ffff44146c6 in WebCore::HTMLDocumentParser::attemptToEnd (this=0x774fd0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLDocumentParser.cpp:786
#38 0x00007ffff441477f in WebCore::HTMLDocumentParser::finish (this=0x774fd0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/html/parser/HTMLDocumentParser.cpp:835
#39 0x00007ffff45aada5 in WebCore::DocumentWriter::end (this=0x694190) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/DocumentWriter.cpp:248
#40 0x00007ffff459d8e4 in WebCore::DocumentLoader::finishedLoading (this=0x6940f0, finishTime=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/DocumentLoader.cpp:402
#41 0x00007ffff459d652 in WebCore::DocumentLoader::notifyFinished (this=0x6940f0, resource=0x7a95c0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/DocumentLoader.cpp:344
#42 0x00007ffff4584948 in WebCore::CachedResource::checkNotify (this=0x7a95c0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/cache/CachedResource.cpp:369
#43 0x00007ffff4584a1e in WebCore::CachedResource::finishLoading (this=0x7a95c0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/cache/CachedResource.cpp:385
#44 0x00007ffff4581170 in WebCore::CachedRawResource::finishLoading (this=0x7a95c0, data=0x765080)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/cache/CachedRawResource.cpp:94
#45 0x00007ffff45e7765 in WebCore::SubresourceLoader::didFinishLoading (this=0x794f30, finishTime=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/SubresourceLoader.cpp:282
#46 0x00007ffff45de04f in WebCore::ResourceLoader::didFinishLoading (this=0x794f30, finishTime=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/ResourceLoader.cpp:488
#47 0x00007ffff4a878e3 in WebCore::QNetworkReplyHandler::finish (this=0x74a890)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:516
#48 0x00007ffff4a86602 in WebCore::QNetworkReplyHandlerCallQueue::flush (this=0x74a8c8)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:250
#49 0x00007ffff4a862ff in WebCore::QNetworkReplyHandlerCallQueue::push (this=0x74a8c8, 
    method=(void (WebCore::QNetworkReplyHandler::*)(WebCore::QNetworkReplyHandler * const)) 0x7ffff4a87728 <WebCore::QNetworkReplyHandler::finish()>)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:216
#50 0x00007ffff4a8724c in WebCore::QNetworkReplyWrapper::didReceiveFinished (this=0x797130)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:409
#51 0x00007ffff4a89bde in WebCore::QNetworkReplyWrapper::qt_static_metacall (_o=0x797130, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fffffffcf70)
    at .moc/release-shared/moc_QNetworkReplyHandler.cpp:176
#52 0x00007ffff22115cb in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#53 0x00007ffff221284e in QObject::event(QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#54 0x00007ffff3058dbc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5
#55 0x00007ffff305c075 in QApplication::notify(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5
#56 0x00007ffff21ecdbe in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#57 0x00007ffff21eea76 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
   from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#58 0x00007ffff2234333 in ?? () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#59 0x00007fffee3790a6 in g_main_dispatch (context=0x6632f0) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3058
---Type <return> to continue, or q <return> to quit---
#60 g_main_context_dispatch (context=context at entry=0x6632f0) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3634
#61 0x00007fffee3793f8 in g_main_context_iterate (context=context at entry=0x6632f0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3705
#62 0x00007fffee37949c in g_main_context_iteration (context=0x6632f0, may_block=1) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3766
#63 0x00007ffff22344bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#64 0x00007ffff21ebd3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#65 0x00007ffff21ef120 in QCoreApplication::exec() () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#66 0x0000000000421ba0 in launcherMain (app=...) at /home/reni/Data/REPOS/webkit_sec/Tools/QtTestBrowser/qttestbrowser.cpp:49
#67 0x0000000000423680 in main (argc=2, argv=0x7fffffffdc48) at /home/reni/Data/REPOS/webkit_sec/Tools/QtTestBrowser/qttestbrowser.cpp:318

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