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Qt 5.12.9 is a bug-fix release. It maintains both forward and backward
compatibility (source and binary) with Qt 5.12.0 through 5.12.8.
For more details, refer to the online documentation included in this
distribution. The documentation is also available online:
https://doc.qt.io/qt-5/index.html
The Qt version 5.12 series is binary compatible with the 5.11.x series.
Applications compiled for 5.11 will continue to run with 5.12.
Some of the changes listed in this file include issue tracking numbers
corresponding to tasks in the Qt Bug Tracker:
https://bugreports.qt.io/
Each of these identifiers can be entered in the bug tracker to obtain more
information about a particular change.
****************************************************************************
* Platform-specific Changes *
****************************************************************************
Linux
-----
- [QTBUG-63584] Fixed a crash in evdev when multiple touchscreens are in use.
Windows
-------
- Fixed a compatibility issue found when linking code compiled with
MSVC version 16.6 to a Qt compiled with 16.5.
- [QTBUG-80436] Fixed a crash when changing screen during session lock.
- [QTBUG-84265] Direct Write Font engine: Fix a memory leak
macOS
-----
- [QTBUG-84405] Respect window type when determining main window status
****************************************************************************
* QtCore *
****************************************************************************
- QCborValue:
* fromCbor() now limits decoding to at most 1024 nested maps, arrays,
and tags to prevent stack overflows. This should be sufficient for
most uses of CBOR. An API to limit further or to relax the limit will
be provided in 5.15. Meanwhile, if decoding more is required,
QCborStreamReader can be used (note that each level of map and array
allocates memory).
****************************************************************************
* QtSQL *
****************************************************************************
- sqlite:
* Updated to v3.32.1 which includes fixes for CVE-2020-11655 and
CVE-2020-11656
****************************************************************************
* QtNetwork *
****************************************************************************
- [QTBUG-83450] OpenSSL: handle SSL_shutdown's errors properly
****************************************************************************
* QtGui *
****************************************************************************
- QIcon:
* [QTBUG-74252] If you call QIcon::setFallbackThemeName(), do it before
creating a QGuiApplication. We fixed a race condition which was
preventing loading the first icon from the fallback theme.
- QImage:
* [oss-fuzz 22557] Fixed undefined behavior in bmp/ico decoder
* [oss-fuzz 22741] Fixed crash in gif decoder
- [QTBUG-84189] Avoid format conversion when uploading textures for the
backing store
****************************************************************************
* QtWidgets *
****************************************************************************
- QWidgetWindow:
* [QTBUG-84222] Fixed crash in QWidgetWindow::event() when
handling closeEvent.
- QMenu:
* [QTBUG-76162] A submenu now always opens on the same screen as
the parent menu.
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