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n value='distro/collabora/dcm-6.2'>distro/collabora/dcm-6.2 LibreOffice 核心代码仓库文档基金会
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path: root/vcl/source/window/legacyaccessibility.cxx
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2024-03-26crash on deref null parent on attempting to find labelCaolán McNamara
ImplFindDlgCtrlWindow always calls ImplGetChildWindow with first arg which does pParent = ImplGetTopParentOfTabHierarchy( pParent ); vcl::Window* pWindow = ImplGetSubChildWindow( pParent, n, nIndex ); ImplGetSubChildWindow always derefs its first arg and ImplGetTopParentOfTabHierarchy only returns null if its input was null so ImplFindDlgCtrlWindow shouldn't be called with null program/libmergedlo.so(_ZNK3vcl6Window13ImplGetWindowEv+0x4)[0x7513e2a40e54] program/libmergedlo.so(+0x33ba57c)[0x7513e29ba57c] program/libmergedlo.so(+0x33ba97c)[0x7513e29ba97c] program/libmergedlo.so(+0x33baf64)[0x7513e29baf64] program/libmergedlo.so(+0x3378d47)[0x7513e2978d47] program/libmergedlo.so(_ZNK3vcl6Window30GetAccessibleRelationLabeledByEv+0x19c)[0x7513e297866c] program/libmergedlo.so(_ZN3vcl6Window18DumpAsPropertyTreeERN5tools10JsonWriterE+0x241)[0x7513e2a4b301] program/libmergedlo.so(_ZN6Dialog18DumpAsPropertyTreeERN5tools10JsonWriterE+0x2e)[0x7513e29b217e] program/libmergedlo.so(_ZN3vcl6Window18DumpAsPropertyTreeERN5tools10JsonWriterE+0x182)[0x7513e2a4b242] program/libmergedlo.so(_ZN3vcl3lok9dumpStateERN3rtl13OStringBufferE+0xc0)[0x7513e2d6ee80] Change-Id: I732550bd67c3af38627849a7d96d8ee6140008b0 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165313 Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com> Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>