323498 - ASSERTION: Second ancestor is not BODY

Status: NEW

(Core :: Layout, defect)

Description

[Jesse Ruderman]

###!!! ASSERTION: Second ancestor is not BODY: 'contentTag == nsHTMLAtoms::body', file /Users/admin/trunk/mozilla/layout/generic/nsHTMLReflowState.cpp, line 1548

Comment 1

[Jesse Ruderman]

Attachment: testcase

Comment 2

[Jesse Ruderman]

This still happens on trunk.

See also bug 384504, "ASSERTION: First ancestor is not HTML".

Comment 3

[Daniel Holbert [:dholbert]]

This assertion is in CalcQuirkContainingBlockHeight, which we call because there's a percent height and we're in quirks mode.

We're basically asserting that the two frames directly below the canvas will have content with HTML and Body tags, respectively.

In this case, that assumption is false -- the second frame has a **Head** tag, (not Body), because the head has been told (via CSS) to be displayed.

So, it looks like this assertion's assumption is too strong.  We may be able to just ease up on what we're asserting, or leave the condition the same but change the assertion to a warning.

Comment 4

[Jesse Ruderman]

Still happens on trunk.

Comment 5

[Ryan VanderMeulen [:RyanVM]]

Still hits to this day :)

ASSERTION: Second ancestor is not BODY: 'frameContent->IsHTMLElement(nsGkAtoms::body)', file layout/generic/ReflowInput.cpp, line 2078
#01: mozilla::ReflowInput::ComputeContainingBlockRectangle [layout/generic/ReflowInput.cpp:2155]
#02: mozilla::ReflowInput::InitConstraints [layout/generic/ReflowInput.cpp:2263]
#03: mozilla::ReflowInput::Init [layout/generic/ReflowInput.cpp:427]
#04: nsBlockReflowContext::ComputeCollapsedBStartMargin [layout/generic/nsBlockReflowContext.cpp:171]
#05: nsBlockFrame::ReflowBlockFrame [layout/generic/nsBlockFrame.cpp:3367]
#06: nsBlockFrame::ReflowLine [layout/generic/nsBlockFrame.cpp:2870]
#07: nsBlockFrame::ReflowDirtyLines [layout/generic/nsBlockFrame.cpp:2409]
#08: nsBlockFrame::Reflow [layout/generic/nsBlockFrame.cpp:1248]
#09: nsContainerFrame::ReflowChild [layout/generic/nsContainerFrame.cpp:937]
#10: nsCanvasFrame::Reflow [layout/generic/nsCanvasFrame.cpp:756]
#11: nsContainerFrame::ReflowChild [layout/generic/nsContainerFrame.cpp:937]
#12: nsHTMLScrollFrame::ReflowScrolledFrame [layout/generic/nsGfxScrollFrame.cpp:554]
#13: nsHTMLScrollFrame::ReflowContents [layout/generic/nsGfxScrollFrame.cpp:684]
#14: nsHTMLScrollFrame::Reflow [layout/generic/nsGfxScrollFrame.cpp:1041]
#15: nsContainerFrame::ReflowChild [layout/generic/nsContainerFrame.cpp:980]
#16: mozilla::ViewportFrame::Reflow [layout/generic/ViewportFrame.cpp:332]
#17: mozilla::PresShell::DoReflow [layout/generic/ReflowOutput.h:282]
#18: mozilla::PresShell::ProcessReflowCommands [layout/base/PresShell.cpp:9121]
#19: mozilla::PresShell::DoFlushPendingNotifications [layout/base/PresShell.cpp:4183]
#20: mozilla::PresShell::DoFlushPendingNotifications [layout/base/PresShell.cpp:4019]
#21: nsDocumentViewer::LoadComplete [layout/base/nsIPresShell.h:557]
#22: nsDocShell::EndPageLoad [docshell/base/nsDocShell.cpp:7761]
#23: nsDocShell::OnStateChange [docshell/base/nsDocShell.cpp:7557]
#24: nsDocLoader::DoFireOnStateChange [uriloader/base/nsDocLoader.cpp:1320]
#25: nsDocLoader::doStopDocumentLoad [uriloader/base/nsDocLoader.cpp:860]
#26: nsDocLoader::DocLoaderIsEmpty [uriloader/base/nsDocLoader.cpp:752]
#27: nsDocLoader::OnStopRequest [uriloader/base/nsDocLoader.cpp:625]
#28: mozilla::net::nsLoadGroup::RemoveRequest [netwerk/base/nsLoadGroup.cpp:631]
#29: nsDocument::DoUnblockOnload [dom/base/nsDocument.cpp:9364]
#30: nsDocument::UnblockOnload [dom/base/nsDocument.cpp:9288]
#31: nsDocument::DispatchContentLoadedEvents [dom/base/nsDocument.cpp:5575]
#32: mozilla::detail::RunnableMethodImpl<nsDocument*, void (nsDocument::*)(), true, (mozilla::RunnableKind)0u>::Run [xpcom/threads/nsThreadUtils.h:1196]
#33: mozilla::SchedulerGroup::Runnable::Run [xpcom/threads/SchedulerGroup.cpp:396]
#34: nsThread::ProcessNextEvent [mfbt/Maybe.h:445]
#35: NS_ProcessNextEvent [xpcom/threads/nsThreadUtils.cpp:524]
#36: mozilla::ipc::MessagePump::Run [ipc/glue/MessagePump.cpp:98]
#37: MessageLoop::RunInternal [ipc/chromium/src/base/message_loop.cc:327]
#38: MessageLoop::Run [ipc/chromium/src/base/message_loop.cc:298]
#39: nsBaseAppShell::Run [widget/nsBaseAppShell.cpp:160]
#40: XRE_RunAppShell [toolkit/xre/nsEmbedFunctions.cpp:834]
#41: mozilla::ipc::MessagePumpForChildProcess::Run [ipc/glue/MessagePump.cpp:269]
#42: MessageLoop::RunInternal [ipc/chromium/src/base/message_loop.cc:327]
#43: MessageLoop::Run [ipc/chromium/src/base/message_loop.cc:298]
#44: XRE_InitChildProcess [toolkit/xre/nsEmbedFunctions.cpp:707]
#45: content_process_main [ipc/contentproc/plugin-container.cpp:65]
#46: main [browser/app/nsBrowserApp.cpp:283]
#47: libc.so.6 + 0x20830
#48: _start

Comment 6

[Firefox Bug Husbandry Bot]

https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Move_fix-optionals