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Fix potential crash when restoring container state (#381)

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This fixes a crash which could occur when restoring the state of a floating container to a non-floating container.

This was because `ads::CDockContainerWidget::RestoreState()` will unconditionally assume this is floating if the XML has the `Floating` boolean set, and will dereference `floatingWidget()`. If this isn't floating, `floatingWidget()` will return `nullptr`, leading to a crash when it's subsequently used.

Fixes #379.
This commit is contained in:
Ben Hetherington 2021-12-03 16:01:16 +00:00 committed by GitHub
parent 21badd592e
commit 0df1a41a1d
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1 changed files with 4 additions and 1 deletions
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src/DockContainerWidget.cpp
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@ -1680,7 +1680,10 @@ bool CDockContainerWidget::restoreState(CDockingStateReader& s, bool Testing)
if (!Testing) if (!Testing)
{ {
CFloatingDockContainer* FloatingWidget = floatingWidget(); CFloatingDockContainer* FloatingWidget = floatingWidget();
FloatingWidget->restoreGeometry(Geometry); if (FloatingWidget)
{
FloatingWidget->restoreGeometry(Geometry);
}
} }
} }