<div>I am running qt-4.8 on Linux/QWS(DirectFB)/x86_64</div><div>I have hit a consistent crash RenderBlockLineLayout.cpp +1485  (attached trace)</div><div><br></div><div>The Crash is consistent in Qt-4.8/demoBrowser with the following URL [ <a href="http://www.brainyquote.com/quotes/authors/a/atal_bihari_vajpayee.html">http://www.brainyquote.com/quotes/authors/a/atal_bihari_vajpayee.html</a> ]</div>
<div><br></div><div>I looked up bugzilla and found   <a href="https://bugs.webkit.org/show_bug.cgi?id=72285">https://bugs.webkit.org/show_bug.cgi?id=72285</a></div><div>Just attached my log as well to the bug.</div><div><br>
</div><div><br></div><div>I am not sure what exact changeset(s) to pull [ <a href="http://trac.webkit.org/log/trunk/Source/WebCore/rendering/RenderBlockLineLayout.cpp?action=stop_on_copy&mode=stop_on_copy&rev=104801&stop_rev=85855&limit=500">http://trac.webkit.org/log/trunk/Source/WebCore/rendering/RenderBlockLineLayout.cpp?action=stop_on_copy&mode=stop_on_copy&rev=104801&stop_rev=85855&limit=500</a>]</div>
<div><br></div><div>Or not even sure if the changes are localized to RenderBlockLineLayout.cpp</div><div><br></div><div>Can some one throw some light on this bug : <a href="https://bugs.webkit.org/show_bug.cgi?id=72285">https://bugs.webkit.org/show_bug.cgi?id=72285</a></div>
<div><br></div><div><br></div><div><br></div><div>#0  0x00007ffff6b39c6a in WebCore::requiresLineBox (it=..., lineInfo=...) at rendering/RenderBlockLineLayout.cpp:1485</div><div>#1  0x00007ffff6b39fe9 in WebCore::RenderBlock::LineBreaker::skipLeadingWhitespace (this=0x7fffffff88e0, resolver=..., lineInfo=..., lastFloatFromPreviousLine=0x0, width=...)</div>
<div>    at rendering/RenderBlockLineLayout.cpp:1529</div><div>#2  0x00007ffff6b3afe2 in WebCore::RenderBlock::LineBreaker::nextLineBreak (this=0x7fffffff88e0, resolver=..., lineInfo=..., lineBreakIteratorInfo=..., </div>
<div>    lastFloatFromPreviousLine=0x0) at rendering/RenderBlockLineLayout.cpp:1827</div><div>#3  0x00007ffff6b369c5 in WebCore::RenderBlock::layoutRunsAndFloats (this=0x7fffea510120, fullLayout=false, hasInlineChild=true, floats=..., repaintLogicalTop=@0x7fffffff8e3c, </div>
<div>    repaintLogicalBottom=@0x7fffffff8e38) at rendering/RenderBlockLineLayout.cpp:915</div><div>#4  0x00007ffff6b382a2 in WebCore::RenderBlock::layoutInlineChildren (this=0x7fffea510120, relayoutChildren=false, repaintLogicalTop=@0x7fffffff8e3c, repaintLogicalBottom=</div>
<div>    @0x7fffffff8e38) at rendering/RenderBlockLineLayout.cpp:1164</div><div>#5  0x00007ffff6b08601 in WebCore::RenderBlock::layoutBlock (this=0x7fffea510120, relayoutChildren=false, pageLogicalHeight=0) at rendering/RenderBlock.cpp:1260</div>
<div>#6  0x00007ffff6b07f76 in WebCore::RenderBlock::layout (this=0x7fffea510120) at rendering/RenderBlock.cpp:1158</div><div>#7  0x00007ffff6b0baa3 in WebCore::RenderBlock::layoutBlockChild (this=0x7fffe01e6d18, child=0x7fffea510120, marginInfo=..., previousFloatLogicalBottom=@0x7fffffff90cc, </div>
<div>    maxFloatLogicalBottom=@0x7fffffff9224) at rendering/RenderBlock.cpp:2000</div><div>#8  0x00007ffff6b0b6d9 in WebCore::RenderBlock::layoutBlockChildren (this=0x7fffe01e6d18, relayoutChildren=false, maxFloatLogicalBottom=@0x7fffffff9224)</div>
<div>    at rendering/RenderBlock.cpp:1938</div><div>#9  0x00007ffff6b08622 in WebCore::RenderBlock::layoutBlock (this=0x7fffe01e6d18, relayoutChildren=false, pageLogicalHeight=0) at rendering/RenderBlock.cpp:1262</div><div>
#10 0x00007ffff6b07f76 in WebCore::RenderBlock::layout (this=0x7fffe01e6d18) at rendering/RenderBlock.cpp:1158</div><div>#11 0x00007ffff6b012f7 in WebCore::RenderObject::layoutIfNeeded (this=0x7fffe01e6d18) at rendering/RenderObject.h:539</div>
<div>#12 0x00007ffff6b12020 in WebCore::RenderBlock::insertFloatingObject (this=0x7fffe01e6218, o=0x7fffe01e6d18) at rendering/RenderBlock.cpp:3169</div><div>#13 0x00007ffff6b09c3f in WebCore::RenderBlock::handleFloatingChild (this=0x7fffe01e6218, child=0x7fffe01e6d18, marginInfo=...) at rendering/RenderBlock.cpp:1530</div>
<div>#14 0x00007ffff6b09b7a in WebCore::RenderBlock::handleSpecialChild (this=0x7fffe01e6218, child=0x7fffe01e6d18, marginInfo=...) at rendering/RenderBlock.cpp:1512</div><div>#15 0x00007ffff6b0b6a7 in WebCore::RenderBlock::layoutBlockChildren (this=0x7fffe01e6218, relayoutChildren=false, maxFloatLogicalBottom=@0x7fffffff9684)</div>
<div>    at rendering/RenderBlock.cpp:1934</div><div>#16 0x00007ffff6b08622 in WebCore::RenderBlock::layoutBlock (this=0x7fffe01e6218, relayoutChildren=false, pageLogicalHeight=0) at rendering/RenderBlock.cpp:1262</div><div>
#17 0x00007ffff6b07f76 in WebCore::RenderBlock::layout (this=0x7fffe01e6218) at rendering/RenderBlock.cpp:1158</div><div>#18 0x00007ffff6b0baa3 in WebCore::RenderBlock::layoutBlockChild (this=0x7fffe053f6c8, child=0x7fffe01e6218, marginInfo=..., previousFloatLogicalBottom=@0x7fffffff991c, </div>
<div>    maxFloatLogicalBottom=@0x7fffffff9a74) at rendering/RenderBlock.cpp:2000</div><div>#19 0x00007ffff6b0b6d9 in WebCore::RenderBlock::layoutBlockChildren (this=0x7fffe053f6c8, relayoutChildren=false, maxFloatLogicalBottom=@0x7fffffff9a74)</div>
<div>    at rendering/RenderBlock.cpp:1938</div><div>#20 0x00007ffff6b08622 in WebCore::RenderBlock::layoutBlock (this=0x7fffe053f6c8, relayoutChildren=false, pageLogicalHeight=0) at rendering/RenderBlock.cpp:1262</div><div>
#21 0x00007ffff6b07f76 in WebCore::RenderBlock::layout (this=0x7fffe053f6c8) at rendering/RenderBlock.cpp:1158</div><div>#22 0x00007ffff6b0baa3 in WebCore::RenderBlock::layoutBlockChild (this=0x7fffe053f498, child=0x7fffe053f6c8, marginInfo=..., previousFloatLogicalBottom=@0x7fffffff9d0c, </div>
<div>    maxFloatLogicalBottom=@0x7fffffff9e64) at rendering/RenderBlock.cpp:2000</div><div>#23 0x00007ffff6b0b6d9 in WebCore::RenderBlock::layoutBlockChildren (this=0x7fffe053f498, relayoutChildren=false, maxFloatLogicalBottom=@0x7fffffff9e64)</div>
<div>    at rendering/RenderBlock.cpp:1938</div><div>#24 0x00007ffff6b08622 in WebCore::RenderBlock::layoutBlock (this=0x7fffe053f498, relayoutChildren=false, pageLogicalHeight=0) at rendering/RenderBlock.cpp:1262</div><div>
#25 0x00007ffff6b07f76 in WebCore::RenderBlock::layout (this=0x7fffe053f498) at rendering/RenderBlock.cpp:1158</div><div>#26 0x00007ffff6b0baa3 in WebCore::RenderBlock::layoutBlockChild (this=0x7fffe053f220, child=0x7fffe053f498, marginInfo=..., previousFloatLogicalBottom=@0x7fffffffa0fc, </div>
<div>    maxFloatLogicalBottom=@0x7fffffffa254) at rendering/RenderBlock.cpp:2000</div><div>#27 0x00007ffff6b0b6d9 in WebCore::RenderBlock::layoutBlockChildren (this=0x7fffe053f220, relayoutChildren=false, maxFloatLogicalBottom=@0x7fffffffa254)</div>
<div>    at rendering/RenderBlock.cpp:1938</div><div>#28 0x00007ffff6b08622 in WebCore::RenderBlock::layoutBlock (this=0x7fffe053f220, relayoutChildren=false, pageLogicalHeight=0) at rendering/RenderBlock.cpp:1262</div><div>
#29 0x00007ffff6b07f76 in WebCore::RenderBlock::layout (this=0x7fffe053f220) at rendering/RenderBlock.cpp:1158</div><div>#30 0x00007ffff6c0345a in WebCore::RenderView::layout (this=0x7fffe053f220) at rendering/RenderView.cpp:130</div>
<div>#31 0x00007ffff6a41c57 in WebCore::FrameView::layout (this=0x7fffea50ab80, allowSubtree=true) at page/FrameView.cpp:964</div><div>#32 0x00007ffff6a47334 in WebCore::FrameView::updateLayoutAndStyleIfNeededRecursive (this=0x7fffea50ab80) at page/FrameView.cpp:2491</div>
<div>#33 0x00007ffff65ffb32 in QWebFramePrivate::renderRelativeCoords (this=0x7fffe4002d10, context=0x7fffffffa750, layers=..., clip=...) at Api/qwebframe.cpp:357</div><div>---Type <return> to continue, or q <return> to quit---</div>
<div>#34 0x00007ffff6602920 in QWebFrame::render (this=0x7fffe4002c30, painter=0x7fffffffa820, clip=...) at Api/qwebframe.cpp:1233</div><div>#35 0x00007ffff66223ab in QWebView::paintEvent (this=0x7e92b0, ev=0x7fffffffb270) at Api/qwebview.cpp:961</div>
<div>#36 0x00007ffff5144b4f in QWidget::event (this=0x7e92b0, event=0x7fffffffb270) at kernel/qwidget.cpp:8507</div><div>#37 0x00007ffff662213a in QWebView::event (this=0x7e92b0, e=0x7fffffffb270) at Api/qwebview.cpp:865</div>
<div>#38 0x00007ffff50ec526 in QApplicationPrivate::notify_helper (this=0x6a33b0, receiver=0x7e92b0, e=0x7fffffffb270) at kernel/qapplication.cpp:4550</div><div>#39 0x00007ffff50ec387 in QApplication::notify (this=0x7fffffffd700, receiver=0x7e92b0, e=0x7fffffffb270) at kernel/qapplication.cpp:4515</div>
<div>#40 0x00007ffff46deb55 in QCoreApplication::notifyInternal (this=0x7fffffffd700, receiver=0x7e92b0, event=0x7fffffffb270) at kernel/qcoreapplication.cpp:876</div><div>#41 0x00007ffff50ee5cb in QCoreApplication::sendSpontaneousEvent (receiver=0x7e92b0, event=0x7fffffffb270)</div>
<div>    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234</div><div>#42 0x00007ffff513cf4a in QWidgetPrivate::drawWidget (this=0x7e9310, pdev=0x7f5298, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x7f5220)</div>
<div>    at kernel/qwidget.cpp:5584</div><div>#43 0x00007ffff513de16 in QWidgetPrivate::paintSiblingsRecursive (this=0x737870, pdev=0x7f5298, siblings=..., index=0, rgn=..., offset=..., flags=4, sharedPainter=0x0, </div><div>
    backingStore=0x7f5220) at kernel/qwidget.cpp:5793</div><div>#44 0x00007ffff513d36e in QWidgetPrivate::drawWidget (this=0x737870, pdev=0x7f5298, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x7f5220)</div>
<div>    at kernel/qwidget.cpp:5637</div><div>#45 0x00007ffff513de16 in QWidgetPrivate::paintSiblingsRecursive (this=0x71b120, pdev=0x7f5298, siblings=..., index=0, rgn=..., offset=..., flags=4, sharedPainter=0x0, </div><div>
    backingStore=0x7f5220) at kernel/qwidget.cpp:5793</div><div>#46 0x00007ffff513dc9a in QWidgetPrivate::paintSiblingsRecursive (this=0x71b120, pdev=0x7f5298, siblings=..., index=0, rgn=..., offset=..., flags=4, sharedPainter=0x0, </div>
<div>    backingStore=0x7f5220) at kernel/qwidget.cpp:5780</div><div>#47 0x00007ffff513d36e in QWidgetPrivate::drawWidget (this=0x71b120, pdev=0x7f5298, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x7f5220)</div>
<div>    at kernel/qwidget.cpp:5637</div><div>#48 0x00007ffff513de16 in QWidgetPrivate::paintSiblingsRecursive (this=0x7934f0, pdev=0x7f5298, siblings=..., index=0, rgn=..., offset=..., flags=4, sharedPainter=0x0, </div><div>
    backingStore=0x7f5220) at kernel/qwidget.cpp:5793</div><div>#49 0x00007ffff513d36e in QWidgetPrivate::drawWidget (this=0x7934f0, pdev=0x7f5298, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x7f5220)</div>
<div>    at kernel/qwidget.cpp:5637</div><div>#50 0x00007ffff513de16 in QWidgetPrivate::paintSiblingsRecursive (this=0x736a00, pdev=0x7f5298, siblings=..., index=21, rgn=..., offset=..., flags=4, sharedPainter=0x0, </div>
<div>    backingStore=0x7f5220) at kernel/qwidget.cpp:5793</div><div>#51 0x00007ffff513dc9a in QWidgetPrivate::paintSiblingsRecursive (this=0x736a00, pdev=0x7f5298, siblings=..., index=22, rgn=..., offset=..., flags=4, sharedPainter=0x0, </div>
<div>    backingStore=0x7f5220) at kernel/qwidget.cpp:5780</div><div>#52 0x00007ffff513d36e in QWidgetPrivate::drawWidget (this=0x736a00, pdev=0x7f5298, rgn=..., offset=..., flags=5, sharedPainter=0x0, backingStore=0x7f5220)</div>
<div>    at kernel/qwidget.cpp:5637</div><div>#53 0x00007ffff5348888 in QWidgetBackingStore::sync (this=0x7f5220) at painting/qbackingstore.cpp:1373</div><div>#54 0x00007ffff5134657 in QWidgetPrivate::syncBackingStore (this=0x736a00) at kernel/qwidget.cpp:1890</div>
<div>#55 0x00007ffff5145126 in QWidget::event (this=0x735fd0, event=0x9aa7b0) at kernel/qwidget.cpp:8654</div><div>#56 0x00007ffff559acd0 in QMainWindow::event (this=0x735fd0, event=0x9aa7b0) at widgets/qmainwindow.cpp:1478</div>
<div>#57 0x00007ffff50ec526 in QApplicationPrivate::notify_helper (this=0x6a33b0, receiver=0x735fd0, e=0x9aa7b0) at kernel/qapplication.cpp:4550</div><div>#58 0x00007ffff50ec387 in QApplication::notify (this=0x7fffffffd700, receiver=0x735fd0, e=0x9aa7b0) at kernel/qapplication.cpp:4515</div>
<div>#59 0x00007ffff46deb55 in QCoreApplication::notifyInternal (this=0x7fffffffd700, receiver=0x735fd0, event=0x9aa7b0) at kernel/qcoreapplication.cpp:876</div><div>#60 0x00007ffff66081e7 in QCoreApplication::sendEvent (receiver=0x735fd0, event=0x9aa7b0) at ../../../../../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231</div>
<div>#61 0x00007ffff46dfab1 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x6a3500) at kernel/qcoreapplication.cpp:1497</div><div>#62 0x00007ffff46df717 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393</div>
<div>#63 0x00007ffff50c224d in QCoreApplication::sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236</div><div>#64 0x00007ffff4714a91 in postEventSourceDispatch (s=0x6ab1c0) at kernel/qeventdispatcher_glib.cpp:279</div>
<div>#65 0x00007ffff191abd3 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0</div><div>#66 0x00007ffff191b3b0 in ?? () from /lib64/libglib-2.0.so.0</div><div>#67 0x00007ffff191b650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0</div>
<div>#68 0x00007ffff47152bb in QEventDispatcherGlib::processEvents (this=0x6a86b0, flags=...) at kernel/qeventdispatcher_glib.cpp:424</div><div>---Type <return> to continue, or q <return> to quit---</div><div>
#69 0x00007ffff517fe66 in QWSEventDispatcherGlib::processEvents (this=0x6a86b0, flags=...) at kernel/qeventdispatcher_glib_qws.cpp:183</div><div>#70 0x00007ffff46dc892 in QEventLoop::processEvents (this=0x7fffffffd6a0, flags=...) at kernel/qeventloop.cpp:149</div>
<div>#71 0x00007ffff46dca1c in QEventLoop::exec (this=0x7fffffffd6a0, flags=...) at kernel/qeventloop.cpp:200</div><div>#72 0x00007ffff46df1a2 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148</div><div>#73 0x00007ffff50e9a01 in QApplication::exec () at kernel/qapplication.cpp:3811</div>
<div>#74 0x000000000046af3b in main (argc=3, argv=0x7fffffffd828) at main.cpp:51</div><div><br></div><div><br></div>-- <br>Sriram Neelakandan<br>Author - Embedded Linux System Design And Development (<a href="http://tinyurl.com/2doosu" target="_blank">http://tinyurl.com/2doosu</a>)<br>