[Libreoffice-bugs] [Bug 141769] Crash in: cppu::OInterfaceContainerHelper::disposeAndClear(com::sun::star::lang::EventObject const &)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=141769

Laurence 'GreenReaper' Parry <greenreaper at hotmail.com> changed:

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--- Comment #45 from Laurence 'GreenReaper' Parry <greenreaper at hotmail.com> ---
Created attachment 172718
  --> https://bugs.documentfoundation.org/attachment.cgi?id=172718&action=edit
Backtrace of exception during ScAccessibleEditLineTextData::GetTextForwarder

(Switching comment and attachment...)

While debugging I encountered what seems to be accessibiliy-related exceptions
in ScAccessibleEditLineTextData::GetTextForwarder; backtrace attached:

Exception thrown at 0x75D1A6F2 in soffice.bin: Microsoft C++ exception:
com::sun::star::uno::RuntimeException at memory location 0x01B8F240.

This occurred a couple of times before I got to the loaded application with
sheet. It goes through SfxWorkWindow::UpdateObjectBars_Impl and
SfxWorkWindow::UpdateObjectBars_Impl into accessiblity-related code (see
trace).

mpTxtWnd and mpForwarder are both null, and so pTextForwarder is null in
AccessibleTextHelper_Impl::GetTextForwarder
So it throws uno::RuntimeException("Unable to fetch text forwarder, model might
be dead", mxFrontEnd); [mxFrontEnd is also null]

Not sure if it is usual for this to occur or if it has relevance to the crash,
but I figured if something failed in creating the accessibility events, it
might also cause problems when accessibility-related stuff is being torn down.

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