Details
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Bug
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Resolution: Done
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P1: Critical
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5.15.2
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Only tested Windows and MacOS, only tested Qt 5.15.2
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macOS,
Windows
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9a131b59ee561e300fb6078886a85dd7b3c53599 (qt/qtbase/dev) 17119981db28378ec9c9d5465e5d46894fc02a86 (qt/tqtc-qtbase/5.15) cdc8b1bf2562a5706340559a12d4333e039584e5 (qt/qtbase/6.2)
Description
When adding an application font and showing a QFontComboBox, it will crash on exit.
Looks like on ~QGuiApplication it cleans up the application fonts and then emits a signal to update all the QFontComboBox, but they're deleted or getting deleted at the same time and it causes a crash.
Stack:
1 QWidget::isActiveWindow() const qwidget.cpp 6662 0x10016962d 2 QStyleOption::init(QWidget const *) qstyleoption.cpp 197 0x1001aa07c 3 QStyleOption::initFrom(QWidget const *) qstyleoption.h 107 0x100233c7d 4 QComboBox::initStyleOption(QStyleOptionComboBox *) const qcombobox.cpp 1277 0x100233c72 5 QComboBoxPrivate::updateLineEditGeometry() qcombobox.cpp 1304 0x100233ef4 6 QComboBoxPrivate::setCurrentIndex(QModelIndex const&) qcombobox.cpp 2322 0x10023447a 7 QComboBox::setCurrentIndex(int) qcombobox.cpp 2288 0x100233a38 8 QFontComboBoxPrivate::_q_updateModel() qfontcombobox.cpp 365 0x1002668f5 9 void doActivate<false>(QObject *, int, void * *) qobject.cpp 3898 0x1010100d5 10 QFontDatabase::removeAllApplicationFonts() qfontdatabase.cpp 2623 0x10086682b 11 QGuiApplication::~QGuiApplication() qguiapplication.cpp 698 0x10078e160 12 QApplication::~QApplication() qapplication.cpp 771 0x1001343d0 13 main main.cpp 16 0x100003902 14 start (x86_64) /usr/lib/system/libdyld.dylib 0x7fff203b7f3d 15 start (x86_64) /usr/lib/system/libdyld.dylib 0x7fff203b7f3d
I joined a repro app with a
{ttf}file, but it doesn't look like it's needed to actually load the file in order to get the crash.
Attachments
Issue Links
- relates to
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- Closed
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| For Gerrit Dashboard: QTBUG-98099 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 380720,5 | QFontComboBox don't response qApp fontDatabaseChanged() | dev | qt/qtbase | Status: MERGED | +2 | 0 |
| 381493,2 | QFontComboBox don't response qApp fontDatabaseChanged() | 6.2 | qt/qtbase | Status: MERGED | +2 | 0 |
| 381494,2 | QFontComboBox don't response qApp fontDatabaseChanged() | tqtc/lts-5.15 | qt/tqtc-qtbase | Status: MERGED | +2 | 0 |