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Qt 5.12.5 is a bug-fix release. It maintains both forward and backward
compatibility (source and binary) with Qt 5.12.0 through 5.12.4.
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.
****************************************************************************
* QtCore *
****************************************************************************
- QBitArray:
* Fixed two bugs that caused QBitArrays created using fromBits() not to
compare equal to the equivalent QBitArray created using other methods
if the size was zero or not a multiple of 4. If the size modulus 8 was
5, 6, or 7, the data was actually incorrect.
- QCborStreamReader:
* Fixed a bug that caused the QIODevice that the data was being read
from not to show the entire CBOR message as consumed. This allows the
user to consume data that may follow the CBOR payload.
- QCryptographicHash:
* Fixed a bug that caused the SHA-3 and Keccak algorithms to crash if
passed 256 MB of data or more.
- QObject:
* Fixed a resource leak caused by a race condition if multiple QObjects
were created at the same time, for the first time in an application,
from multiple threads (implies threads not started with QThread).
- QStorageInfo:
* Fixed a bug that caused QStorageInfo to be unable to report all
filesystems if the options to mounted filesystems were too long (over
900 characters, roughly), such as those found in Docker overlay
mounts.
- QTimeZone:
* The IANA timezone database backend now properly follows symlinks even
when they point to variable locations like /run or /var (useful when
/etc is mounted read-only).
****************************************************************************
* QtGui *
****************************************************************************
- QImage:
* Improve loading time when loading png files that have the same size as
the target.
- QPixmapCache:
* [QTBUG-76694][QTBUG-72523] Ignore unsafe access from non-main threads
- Text:
* [QTBUG-76219] Fixed a bug which could cause the font cache to grow
larger than it was supposed to.
* [QTBUG-55096][QTBUG-74761] Fixed bug where regular text rendered with
a color font would always display in black.
* [QTBUG-69546] Fixed a crash bug in
QTextDocument::clearUndoRedoStacks(QTextDocument::UndoStack).
****************************************************************************
* QtNetwork *
****************************************************************************
- QHostInfo:
* Functors used in the lookupHost overloads are now called correctly in
the thread of the context object. When used without context object,
the thread that initiates the lookup will run the functor, and is
required to run an event loop.
- Windows:
* Correctly emit errors when trying to reach unreachable hosts or
services
****************************************************************************
* QtWidgets *
****************************************************************************
- QGraphicsView:
* Ignore disabled items when setting the mouse cursor.
- QSplashScreen:
* On macOS, lower the splash screen when a modal dialog is shown to make
sure the user sees the dialog.
- QSystemTrayIcon:
* On macOS, show the icon passed into showMessage in the notification
popup
****************************************************************************
* Android *
****************************************************************************
- [QTBUG-76293] Fix NDK r20 linking.
- [QTBUG-76036] Fixed an issue where menus would not work on 64 bit
builds.
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