related tdf#156683 a11y: Dispose FrameSelectorImpl a11y children

Don't just invalidate, but also dispose the a11y children
in `FrameSelectorImpl::~FrameSelectorImpl`.

This fixes a crash on exit that's reproducible with
the gtk3 VCL plugin e.g. like this (maybe some
steps aren't even needed):

1) start LO Writer with the gtk3 VCL plugin
2) right-click, select "Character" > "Character"
in context menu
3) switch to "Font Effects" tab
4) press space key with focus in the font color combobox
to open the popup
5) use Tab key to get to the view of colors
6) move around with arrow keys a bit
7) close the dialog and Writer

Reverse-continuing to `atk_object_wrapper_dispose`
(frame #10 in the below backtrace) in rr
showed the involved a11y object:

uno::Reference to (svx::a11y::AccFrameSelectorChild *) 0x5557832b9150

Backtrace (somewhat similar to the one in tdf#156683):

#0  0x00007ffff6b15cd6 in comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener>::disposeAndClear(std::unique_lock<std::mutex>&, com::sun::star::lang::EventObject const&)
(this=0x7fffffffca88, rGuard=..., rEvt=...) at .../include/comphelper/interfacecontainer4.hxx:397
#1  0x00007ffff6b13c6f in comphelper::AccessibleEventNotifier::revokeClientNotifyDisposing(unsigned int, com::sun::star::uno::Reference<com::sun::star::uno::XInterface> const&)
(_nClient=1058, _rxEventSource=uno::Reference to (svx::a11y::AccFrameSelectorChild *) 0x55555cecfdf0) at .../comphelper/source/misc/accessibleeventnotifier.cxx:204
#2  0x00007ffff6b1028a in comphelper::OCommonAccessibleComponent::disposing() (this=0x55555cecfdf0) at .../comphelper/source/misc/accessiblecomponenthelper.cxx:61
#3  0x00007ffff6674aeb in cppu::WeakComponentImplHelperBase::dispose() (this=0x55555cecfdf0) at .../cppuhelper/source/implbase.cxx:104
#4  0x00007ffff2ddf0e0 in cppu::PartialWeakComponentImplHelper<com::sun::star::accessibility::XAccessibleContext2, com::sun::star::accessibility::XAccessibleEventBroadcaster>::dispose() (this=0x55555cecfdf0)
at .../include/cppuhelper/compbase.hxx:90
#5  0x00007ffff6674834 in cppu::WeakComponentImplHelperBase::release() (this=0x55555cecfdf0) at .../cppuhelper/source/implbase.cxx:79
#6  0x00007ffff2ddf642 in cppu::PartialWeakComponentImplHelper<com::sun::star::accessibility::XAccessibleContext2, com::sun::star::accessibility::XAccessibleEventBroadcaster>::release() (this=0x55555cecfdf0)
at .../include/cppuhelper/compbase.hxx:86
#7  0x00007ffff2ddf378 in cppu::ImplInheritanceHelper<comphelper::OCommonAccessibleComponent, com::sun::star::accessibility::XAccessibleComponent>::release() (this=0x55555cecfdf0)
at .../include/cppuhelper/implbase.hxx:171
#8  0x00007ffff2ddf0a0 in cppu::ImplInheritanceHelper<comphelper::OAccessibleComponentHelper, com::sun::star::accessibility::XAccessible>::release() (this=0x55555cecfdf0)
at .../include/cppuhelper/implbase.hxx:171
#9  0x00007fffe3f29535 in com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleContext>::clear() (this=0x55555d40a010) at .../include/com/sun/star/uno/Reference.hxx:231
#10 0x00007fffe3f288de in atk_object_wrapper_dispose(AtkObjectWrapper*) (wrapper=0x55555d409fa0) at .../vcl/unx/gtk3/a11y/atkwrapper.cxx:1078
#11 0x00007fffe3f27527 in atk_object_wrapper_finalize(GObject*) (obj=0x55555d409fa0) at .../vcl/unx/gtk3/a11y/atkwrapper.cxx:674
#12 0x00007ffff138c48c in g_object_unref () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007fffe3f003f7 in AtkListener::~AtkListener() (this=0x55555ce6ecb0, __in_chrg=<optimized out>) at .../vcl/unx/gtk3/a11y/atklistener.cxx:57
#14 0x00007fffe3f0042e in AtkListener::~AtkListener() (this=0x55555ce6ecb0, __in_chrg=<optimized out>) at .../vcl/unx/gtk3/a11y/atklistener.cxx:58
#15 0x00007ffff6756838 in cppu::OWeakObject::release() (this=0x55555ce6ecb0) at .../cppuhelper/source/weak.cxx:230
#16 0x00007fffe3f0a7de in cppu::WeakImplHelper<com::sun::star::accessibility::XAccessibleEventListener>::release() (this=0x55555ce6ecb0) at .../include/cppuhelper/implbase.hxx:115
#17 0x00007ffff6b21b99 in com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>::~Reference() (this=0x55555d40a0c0, __in_chrg=<optimized out>)
at .../include/com/sun/star/uno/Reference.hxx:114
#18 0x00007ffff6b217a9 in std::_Destroy<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> >(com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*)
(__pointer=0x55555d40a0c0) at /usr/include/c++/13/bits/stl_construct.h:151
#19 0x00007ffff6b20bcf in std::_Destroy_aux<false>::__destroy<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*>(com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*, com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*) (__first=0x55555d40a0c0, __last=0x55555d40a0c8) at /usr/include/c++/13/bits/stl_construct.h:163
#20 0x00007ffff6b1f105 in std::_Destroy<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*>(com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*, com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*) (__first=0x55555d40a0c0, __last=0x55555d40a0c8) at /usr/include/c++/13/bits/stl_construct.h:196
#21 0x00007ffff6b197aa in std::_Destroy<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*, com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> >(com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*, com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>*, std::allocator<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> >&) (__last=0x55555d40a0c8, __first=0x55555d40a0c0) at /usr/include/c++/13/bits/alloc_traits.h:947
#22 std::__cxx1998::vector<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>, std::allocator<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> > >::~vector()
(this=0x55555cf22af8, __in_chrg=<optimized out>) at /usr/include/c++/13/bits/stl_vector.h:732
#23 0x00007ffff6b17402 in std::__debug::vector<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>, std::allocator<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> > >::~vector() (this=0x55555cf22ae0, __in_chrg=<optimized out>) at /usr/include/c++/13/debug/vector:230
#24 0x00007ffff6b1742a in o3tl::cow_wrapper<std::__debug::vector<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>, std::allocator<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> > >, o3tl::ThreadSafeRefCountingPolicy>::impl_t::~impl_t() (this=0x55555cf22ae0, __in_chrg=<optimized out>) at .../include/o3tl/cow_wrapper.hxx:176
#25 0x00007ffff6b17485 in o3tl::cow_wrapper<std::__debug::vector<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>, std::allocator<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> > >, o3tl::ThreadSafeRefCountingPolicy>::release() (this=0x55555d40a0b0) at .../include/o3tl/cow_wrapper.hxx:207
#26 0x00007ffff6b15700 in o3tl::cow_wrapper<std::__debug::vector<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener>, std::allocator<com::sun::star::uno::Reference<com::sun::star::accessibility::XAccessibleEventListener> > >, o3tl::ThreadSafeRefCountingPolicy>::~cow_wrapper() (this=0x55555d40a0b0, __in_chrg=<optimized out>) at .../include/o3tl/cow_wrapper.hxx:271
#27 0x00007ffff6b145b4 in comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener>::~OInterfaceContainerHelper4() (this=0x55555d40a0b0, __in_chrg=<optimized out>)
at .../include/comphelper/interfacecontainer4.hxx:126
#28 0x00007ffff6b206c6 in std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >::~pair() (this=0x55555d40a0a8, __in_chrg=<optimized out>)
at /usr/include/c++/13/bits/stl_pair.h:187
#29 0x00007ffff6b1aac4 in std::__new_allocator<std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false> >::destroy<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> > >(std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >*) (__p=0x55555d40a0a8, this=0x7ffff6f64988 <(anonymous namespace)::gaClients+40>) at /usr/include/c++/13/bits/new_allocator.h:194
#30 std::allocator_traits<std::allocator<std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false> > >::destroy<std::pair<unsigned i--Type <RET> for more, q to quit, c to continue without paging--
nt const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> > >(std::allocator<std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false> >&, std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >*) (__p=0x55555d40a0a8, __a=...)
at /usr/include/c++/13/bits/alloc_traits.h:557
#31 std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false> > >::_M_deallocate_node(std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false>*)
(this=0x7ffff6f64988 <(anonymous namespace)::gaClients+40>, __n=0x55555d40a0a0) at /usr/include/c++/13/bits/hashtable_policy.h:2020
#32 0x00007ffff6b188b7 in std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false> > >::_M_deallocate_nodes(std::__detail::_Hash_node<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, false>*)
(this=0x7ffff6f64988 <(anonymous namespace)::gaClients+40>, __n=0x55555d409ef0) at /usr/include/c++/13/bits/hashtable_policy.h:2042
#33 0x00007ffff6b164e6 in std::_Hashtable<unsigned int, std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> >, std::allocator<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> > >, std::__detail::_Select1st, std::equal_to<unsigned int>, std::hash<unsigned int>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<false, false, true> >::clear() (this=0x7ffff6f64988 <(anonymous namespace)::gaClients+40>) at /usr/include/c++/13/bits/hashtable.h:2509
#34 0x00007ffff6b187cc in std::__cxx1998::unordered_map<unsigned int, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener>, std::hash<unsigned int>, std::equal_to<unsigned int>, std::allocator<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> > > >::clear() (this=0x7ffff6f64988 <(anonymous namespace)::gaClients+40>)
at /usr/include/c++/13/bits/unordered_map.h:798
#35 0x00007ffff6b164a0 in std::__debug::unordered_map<unsigned int, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener>, std::hash<unsigned int>, std::equal_to<unsigned int>, std::allocator<std::pair<unsigned int const, comphelper::OInterfaceContainerHelper4<com::sun::star::accessibility::XAccessibleEventListener> > > >::clear() (this=0x7ffff6f64960 <(anonymous namespace)::gaClients>)
at /usr/include/c++/13/debug/unordered_map:234
#36 0x00007ffff6b14151 in comphelper::AccessibleEventNotifier::shutdown() () at .../comphelper/source/misc/accessibleeventnotifier.cxx:268
#37 0x00007fffee53fa20 in DeInitVCL() () at .../vcl/source/app/svmain.cxx:594
#38 0x00007fffee53e227 in ImplSVMain() () at .../vcl/source/app/svmain.cxx:229
#39 0x00007fffee53e283 in SVMain() () at .../vcl/source/app/svmain.cxx:236
#40 0x00007ffff7a9f51d in soffice_main() () at .../desktop/source/app/sofficemain.cxx:94
#41 0x00005555555549d4 in sal_main () at .../desktop/source/app/main.c:51
#42 0x00005555555549ba in main (argc=2, argv=0x7fffffffd8e8) at .../desktop/source/app/main.c:49

Change-Id: I22c665f3c41624f4916b956ea266ff1d39fbe507
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/155848
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/svx/source/dialog/frmsel.cxx b/svx/source/dialog/frmsel.cxx
index 5f2ca0e4c718..55e73043044b 100644
--- a/svx/source/dialog/frmsel.cxx
+++ b/svx/source/dialog/frmsel.cxx
@@ -275,7 +275,10 @@ FrameSelectorImpl::~FrameSelectorImpl()
 #if !ENABLE_WASM_STRIP_ACCESSIBILITY
     for( auto& rpChild : maChildVec )
         if( rpChild.is() )
+        {
             rpChild->Invalidate();
+            rpChild->dispose();
+        }
 #endif
 }