Bug 192512 – ASSERTION FAILED: firstProperty == lastProperty in WebCore::StyleResolver::applyCascadedPropertiesImpl

• Status: NEW
• Component: CSS

[Alicia Boya García]

It happens while loading http://youtube.com/ in debug mode, sometimes.

ASSERTION FAILED: firstProperty == lastProperty

(gdb) p firstProperty
$1 = 26
(gdb) p lastProperty
$2 = 416

#0  WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:255
#1  0x00007febbba58423 in WebCore::StyleResolver::applyCascadedPropertiesImpl<(WebCore::StyleResolver::CustomPropertyCycleTracking)0> (this=0x7feaa44b4500, firstProperty=26, lastProperty=416, state=...)
    at ../../Source/WebCore/css/StyleResolver.cpp:2399
#2  0x00007febbba49fb7 in WebCore::StyleResolver::applyCascadedProperties (this=0x7feaa44b4500, firstProperty=26, lastProperty=416, state=...) at ../../Source/WebCore/css/StyleResolver.cpp:2376
#3  0x00007febbba46457 in WebCore::StyleResolver::applyMatchedProperties (this=0x7feaa44b4500, matchResult=..., element=..., shouldUseMatchedPropertiesCache=WebCore::StyleResolver::UseMatchedPropertiesCache)
    at ../../Source/WebCore/css/StyleResolver.cpp:1434
#4  0x00007febbba4164c in WebCore::StyleResolver::styleForElement (this=0x7feaa44b4500, element=..., parentStyle=0x7feb08313300, parentBoxStyle=0x7feb08313300, 
    matchingBehavior=WebCore::RuleMatchingBehavior::MatchAllRules, selectorFilter=0x7feb4e4ed410) at ../../Source/WebCore/css/StyleResolver.cpp:397
#5  0x00007febbcb2620b in WebCore::Style::TreeResolver::styleForElement (this=0x7ffd51766030, element=..., inheritedStyle=...) at ../../Source/WebCore/style/StyleTreeResolver.cpp:131
#6  0x00007febbcb265aa in WebCore::Style::TreeResolver::resolveElement (this=0x7ffd51766030, element=...) at ../../Source/WebCore/style/StyleTreeResolver.cpp:192
#7  0x00007febbcb27acc in WebCore::Style::TreeResolver::resolveComposedTree (this=0x7ffd51766030) at ../../Source/WebCore/style/StyleTreeResolver.cpp:489
#8  0x00007febbcb27ee4 in WebCore::Style::TreeResolver::resolve (this=0x7ffd51766030) at ../../Source/WebCore/style/StyleTreeResolver.cpp:547
#9  0x00007febbbb624ae in WebCore::Document::resolveStyle (this=0x7feb33402fd0, type=WebCore::Document::ResolveStyleType::Normal) at ../../Source/WebCore/dom/Document.cpp:1921
#10 0x00007febbbb62ceb in WebCore::Document::updateStyleIfNeeded (this=0x7feb33402fd0) at ../../Source/WebCore/dom/Document.cpp:2050
#11 0x00007febbbb62e53 in WebCore::Document::updateLayout (this=0x7feb33402fd0) at ../../Source/WebCore/dom/Document.cpp:2087
#12 0x00007febbc9ad4e7 in WebCore::RenderView::hitTest (this=0x7feb33200768, request=..., location=..., result=...) at ../../Source/WebCore/rendering/RenderView.cpp:147
#13 0x00007febbc9ad4b7 in WebCore::RenderView::hitTest (this=0x7feb33200768, request=..., result=...) at ../../Source/WebCore/rendering/RenderView.cpp:142
#14 0x00007febbbb69212 in WebCore::Document::prepareMouseEvent (this=0x7feb33402fd0, request=..., documentPoint=..., event=...) at ../../Source/WebCore/dom/Document.cpp:3723
#15 0x00007febbc2e9bc5 in WebCore::EventHandler::handleMousePressEvent (this=0x7feba24c5480, platformMouseEvent=...) at ../../Source/WebCore/page/EventHandler.cpp:1705
#16 0x00007febbcb16f1e in WebCore::UserInputBridge::handleMousePressEvent (this=0xbe5700, mouseEvent=...) at ../../Source/WebCore/replay/UserInputBridge.cpp:57
#17 0x00007febba8c63b5 in WebKit::handleMouseEvent (mouseEvent=..., page=0x7feb543fa600) at ../../Source/WebKit/WebProcess/WebPage/WebPage.cpp:2483
#18 0x00007febba8c6635 in WebKit::WebPage::mouseEvent (this=0x7feb543fa600, mouseEvent=...) at ../../Source/WebKit/WebProcess/WebPage/WebPage.cpp:2550
#19 0x00007febb9f0f93e in IPC::callMemberFunctionImpl<WebKit::WebPage, void (WebKit::WebPage::*)(WebKit::WebMouseEvent const&), std::tuple<WebKit::WebMouseEvent>, 0ul> (object=0x7feb543fa600, function=
    (void (WebKit::WebPage::*)(WebKit::WebPage * const, const WebKit::WebMouseEvent &)) 0x7febba8c6492 <WebKit::WebPage::mouseEvent(WebKit::WebMouseEvent const&)>, args=...)
    at ../../Source/WebKit/Platform/IPC/HandleMessage.h:41
#20 0x00007febb9f0c50c in IPC::callMemberFunction<WebKit::WebPage, void (WebKit::WebPage::*)(WebKit::WebMouseEvent const&), std::tuple<WebKit::WebMouseEvent>, std::integer_sequence<unsigned long, 0ul> > (
    args=..., object=0x7feb543fa600, function=(void (WebKit::WebPage::*)(WebKit::WebPage * const, const WebKit::WebMouseEvent &)) 0x7febba8c6492 <WebKit::WebPage::mouseEvent(WebKit::WebMouseEvent const&)>)
    at ../../Source/WebKit/Platform/IPC/HandleMessage.h:47
#21 0x00007febb9f02a2c in IPC::handleMessage<Messages::WebPage::MouseEvent, WebKit::WebPage, void (WebKit::WebPage::*)(WebKit::WebMouseEvent const&)> (decoder=..., object=0x7feb543fa600, function=
    (void (WebKit::WebPage::*)(WebKit::WebPage * const, const WebKit::WebMouseEvent &)) 0x7febba8c6492 <WebKit::WebPage::mouseEvent(WebKit::WebMouseEvent const&)>)
    at ../../Source/WebKit/Platform/IPC/HandleMessage.h:133
#22 0x00007febb9efa2c5 in WebKit::WebPage::didReceiveWebPageMessage (this=0x7feb543fa600, connection=..., decoder=...) at DerivedSources/WebKit/WebPageMessageReceiver.cpp:278
#23 0x00007febba8cb582 in WebKit::WebPage::didReceiveMessage (this=0x7feb543fa600, connection=..., decoder=...) at ../../Source/WebKit/WebProcess/WebPage/WebPage.cpp:4258
#24 0x00007febba10a432 in IPC::MessageReceiverMap::dispatchMessage (this=0x8e6e40, connection=..., decoder=...) at ../../Source/WebKit/Platform/IPC/MessageReceiverMap.cpp:123
#25 0x00007febba610068 in WebKit::WebProcess::didReceiveMessage (this=0x8e6dd0, connection=..., decoder=...) at ../../Source/WebKit/WebProcess/WebProcess.cpp:676
#26 0x00007febba0e83b1 in IPC::Connection::dispatchMessage (this=0x7feba24e5000, decoder=...) at ../../Source/WebKit/Platform/IPC/Connection.cpp:978
#27 0x00007febba0e852c in IPC::Connection::dispatchMessage (this=0x7feba24e5000, message=std::unique_ptr<IPC::Decoder> = {...}) at ../../Source/WebKit/Platform/IPC/Connection.cpp:1005
#28 0x00007febba0e8a10 in IPC::Connection::dispatchOneIncomingMessage (this=0x7feba24e5000) at ../../Source/WebKit/Platform/IPC/Connection.cpp:1074
#29 0x00007febba0e80fe in IPC::Connection::<lambda()>::operator()(void) (__closure=0x7feba24fadd8) at ../../Source/WebKit/Platform/IPC/Connection.cpp:956
#30 0x00007febba0efbfa in WTF::Function<void()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::unique_ptr<IPC::Decoder>)::<lambda()> >::call(void) (this=0x7feba24fadd0)
    at DerivedSources/ForwardingHeaders/wtf/Function.h:101
#31 0x00007febb9f39f42 in WTF::Function<void ()>::operator()() const (this=0x7ffd517691c8) at DerivedSources/ForwardingHeaders/wtf/Function.h:56
#32 0x00007febafa14e67 in WTF::RunLoop::performWork (this=0x7feba24f9000) at ../../Source/WTF/wtf/RunLoop.cpp:106
#33 0x00007febafa60928 in WTF::RunLoop::<lambda(gpointer)>::operator()(gpointer) const (__closure=0x0, userData=0x7feba24f9000) at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:68
#34 0x00007febafa6094c in WTF::RunLoop::<lambda(gpointer)>::_FUN(gpointer) () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:70
#35 0x00007febafa608c8 in WTF::<lambda(GSource*, GSourceFunc, gpointer)>::operator()(GSource *, GSourceFunc, gpointer) const (__closure=0x0, source=0x92a470, 
    callback=0x7febafa6092f <WTF::RunLoop::<lambda(gpointer)>::_FUN(gpointer)>, userData=0x7feba24f9000) at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:45
#36 0x00007febafa608f8 in WTF::<lambda(GSource*, GSourceFunc, gpointer)>::_FUN(GSource *, GSourceFunc, gpointer) () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:46
#37 0x00007feba6eda818 in g_main_dispatch () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:3148
#38 g_main_context_dispatch () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:3813
#39 0x00007feba6edabd8 in g_main_context_iterate () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:3886
#40 0x00007feba6edaec2 in g_main_loop_run () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:4082
#41 0x00007febafa60e06 in WTF::RunLoop::run () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#42 0x00007febba93ba71 in WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebProcessMain> (argc=3, argv=0x7ffd517695b8) at ../../Source/WebKit/Shared/unix/ChildProcessMain.h:61
#43 0x00007febba93934f in WebKit::WebProcessMainUnix (argc=3, argv=0x7ffd517695b8) at ../../Source/WebKit/WebProcess/gtk/WebProcessMainGtk.cpp:67
#44 0x0000000000400cc1 in main (argc=3, argv=0x7ffd517695b8) at ../../Source/WebKit/WebProcess/EntryPoint/unix/WebProcessMain.cpp:52