diff options
author | Miika Pernu <miika.pernu@qt.io> | 2020-05-14 15:26:51 +0300 |
---|---|---|
committer | Volker Hilsheimer <volker.hilsheimer@qt.io> | 2020-06-04 20:29:38 +0000 |
commit | 036c3c19e7da5f1a280750d3c68a0cff38678029 (patch) | |
tree | 32bc755fc966aa192a48c5ad24f7a8c5a4eb88a4 /src/widgets/kernel/qwidgetwindow.cpp | |
parent | c7b457e287232d235cd56fcb0dd106f4617d96f0 (diff) |
Fix to crash in QWindow::event when delete this called on closeEvent
Starting from Qt 5.11 QWindow::event is called after QDialog::closeEvent
which would cause a crash if "delete this" was called on closeEvent. The commit
that changed this was e0b5ff4ad583befbecbcbe462998e3ed80899531. Added
a check before QWindow::event call utilizing QPointer to prevent the
function call in case object is destroyed by a user in close event handler.
Change-Id: I64a4a0f3271714e55bf7e806177f0d8b39b67fa3
Fixes: QTBUG-84222
Pick-to: 5.15 5.12
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Diffstat (limited to 'src/widgets/kernel/qwidgetwindow.cpp')
-rw-r--r-- | src/widgets/kernel/qwidgetwindow.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/widgets/kernel/qwidgetwindow.cpp b/src/widgets/kernel/qwidgetwindow.cpp index f2d0fd9c55..c1128e2fec 100644 --- a/src/widgets/kernel/qwidgetwindow.cpp +++ b/src/widgets/kernel/qwidgetwindow.cpp @@ -249,10 +249,14 @@ bool QWidgetWindow::event(QEvent *event) } switch (event->type()) { - case QEvent::Close: + case QEvent::Close: { + // The widget might be deleted in the close event handler. + QPointer<QObject> guard = this; handleCloseEvent(static_cast<QCloseEvent *>(event)); - QWindow::event(event); + if (guard) + QWindow::event(event); return true; + } case QEvent::Enter: case QEvent::Leave: |