260 lines
10 KiB
Groff
260 lines
10 KiB
Groff
Qt 5.9.2 is a bug-fix release. It maintains both forward and backward
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compatibility (source and binary) with Qt 5.9.0.
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For more details, refer to the online documentation included in this
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distribution. The documentation is also available online:
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http://doc.qt.io/qt-5/index.html
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The Qt version 5.9 series is binary compatible with the 5.8.x series.
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Applications compiled for 5.8 will continue to run with 5.9.
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Some of the changes listed in this file include issue tracking numbers
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corresponding to tasks in the Qt Bug Tracker:
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https://bugreports.qt.io/
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Each of these identifiers can be entered in the bug tracker to obtain more
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information about a particular change.
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****************************************************************************
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* Important Behavior Changes *
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****************************************************************************
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- Building examples inside the Qt source tree while not building Qt itself
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is rejected now, because this can cause hard to debug configuration
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issues. If building isolated examples is needed, you may still use shadow
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builds.
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- This version of Qt restores compatibility with pre-5.9.0 calculation of
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QCryptographicHash algorithms that were labelled "Sha3_nnn": that is,
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applications compiled with old versions of Qt will continue using the
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Keccak algorithm. Applications recompiled with this version will use
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SHA-3, unless QT_SHA3_KECCAK_COMPAT is #define'd prior to #include
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<QCryptographicHash>.
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****************************************************************************
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* General Notes *
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****************************************************************************
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Binary Compatibility Note
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-------------------------
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- The variable QOperatingSystemVersion::AndroidOreo was added in this
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release. Code that uses this variable will not run under Qt 5.9.1. If
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backwards compatibility is desired, use instead
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QOperatingSystemVersion(QOperatingSystemVersion::Android, 8)
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[This is similar to QOperatingSystemVersion::MacOSHighSierra added in
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5.9.1]
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- This version of Qt changes the values assigned to enumerations
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QCryptographicHash::Sha3_nnn. Applications compiled with this version and
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using those enumerations will not work with Qt 5.9.0 and 5.9.1, unless
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QT_SHA3_KECCAK_COMPAT is defined.
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Deprecation Notice
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------------------
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- Starting with Qt 5.10, IPv6 support will be mandatory for all platforms.
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Systems without proper IPv6 support, such as the getaddrinfo() function
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or the proper socket address structures, will not be able to build
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QtNetwork anymore.
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Third-Party Code
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----------------
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- [QTBUG-31020] zlib was updated to version 1.2.11.
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- libpng was updated to version 1.6.32
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****************************************************************************
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* Library *
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****************************************************************************
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QtCore
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------
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- [QTBUG-61350] Fixed the conversion from string to double of the strings
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"0E+1" and "0E-1" (with capital E), which QString::toDouble(),
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QByteArray::toDouble() and similar functions reported as invalid.
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- QFile:
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* [QTBUG-57023] Reverted an incorrect change from Qt 5.9.0 that forbade
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the creation and access to Alternate Data Streams on NTFS on Windows.
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This means that file names containing a colon (':') are allowed again,
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but note that they are not regular files.
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- QFileInfo:
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* [QTBUG-62802] Relative symbolic links on Windows are now resolved to
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their absolute path by symLinkTarget().
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- QFileSystemWatcher:
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* [QTBUG-62242] Fixed a crash on Windows if this class was instantiated
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before QCoreApplication was created.
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* [QTBUG-61792] Fixed an issue on Windows that would cause this class not
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to monitor files properly if the directory containing the monitored
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files was added to the list of watched paths after the files.
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- QLocale:
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* [QTBUG-53565] Fixed the conversion of QTime to string form and parsing
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from string form to always treat the value as the decimal fraction of
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the seconds component. That is, the string format ".z" produces/parses
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".2" for 200 milliseconds and ".002" for 2 milliseconds. Use of "z" or
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"zzz" is discouraged outside decimal fractions to avoid surprises.
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* [QTBUG-61949] Fixed bcp57Name() to return "en" for the QLocale::c()
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locale. Previously, it returned "C", which is not a valid BCP47
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language tag.
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- QProcess:
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* [QTBUG-61634] Added a workaround for a rare race-condition bug in
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some C libraries that caused the child process started by QProcess to
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hang after trying to launch a non-existent executable or change to a
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non-existent directory.
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* [QTBUG-62584] Fixed a race-condition bug that could cause
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waitForXxx() functions to hang forever if a slot triggered by that
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function futher started a nested event loop.
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- QTimeZone:
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* [QTBUG-63205] Fixed a bug that would cause QTimeZone to mis-parse
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timezone files on Unix systems if they contained leap second
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information.
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- QVariant:
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* [QTBUG-61471] Fixed QVariant to actually perform the conversions
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between QVariantHash and QVariantMap in the respective .toHash() and
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.toMap() functions. QVariant already reported true in .canConvert()
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between those two types.
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QtDBus
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------
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- [QTBUG-62284] Fixed a race condition in QDBusAbstractInterface that
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could cause the class to never see the notification that the remote
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service became available and cause isValid() to change to true.
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QtGui
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-----
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- Text:
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* [QTBUG-61520] Fixed matching of non-regular font weights for
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application fonts on macOS.
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QtNetwork
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---------
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- [QTBUG-61692] Fixed the handling of application-wide proxy settings (set
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with QNetworkProxy): previously, QTcpSocket would directly fall back to
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the system settings if the object-specific setting was
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QNetworkProxy::DefaultProxy.
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- QLocalSocket:
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* [QTBUG-61643] Fixed an issue with Qt pipe-handling code that could
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cause deadlocks on Windows, most often if the QLocalSocket object tried
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to wait for more data during application shutdown.
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QtTest
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------
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- Added flowId to messages when logging in TeamCity format. FlowId is used
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to distinguish logging from multiple processes running in parallel.
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QtWidgets
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---------
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- Android:
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* [QTBUG-48639] Fixed label duplication for buttons when using style
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sheets with the Android style.
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- QLineEdit:
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* [QTBUG-60319] Fixed behavior of the ImSurroundingText query.
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Previously, it returned a masked text whose length may be less than
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the cursor position. Now it returns unmasked text, so the text length
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is always greater than or equal to the cursor position.
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- QMenu:
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* [QTBUG-59794] Fixed menu size issue when using high DPI on
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multi-screen system.
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****************************************************************************
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* Compiler-specific Changes *
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****************************************************************************
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clang
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-----
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- [QTBUG-61840][QTBUG-62085] Fixed an issue that caused recent Clang
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versions to print a warning about [[nodiscard].
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Visual Studio
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-------------
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- [QTBUG-61902] Changed Qt uses of certain C++ Standard Library functions
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that Visual Studio warns about. Now Qt public headers call
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Microsoft-specific versions that do not produce warnings.
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****************************************************************************
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* Platform-specific Changes *
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****************************************************************************
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macOS
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-----
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- [QTBUG-59222] Switching focus objects inside a top level window while
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composing text using dead keys or input method events would leave the
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application in an inconsistent state. The composition now automatically
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cancels when the focus object changes.
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Windows
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-------
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- [QTBUG-57916] Fixed build with ANGLE and newer MinGW versions.
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- [QTBUG-62083] Fixed Qt trying to steal certain events from user windows if
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the event ID was WM_USER.
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****************************************************************************
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* Tools *
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****************************************************************************
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configure & build system
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------------------------
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- [QTBUG-35928][QTBUG-41908][Apple] Qt can now be built using just the
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Xcode Command Line Tools, without needing to install the full Xcode IDE.
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- [QTBUG-55755][Windows] All Qt .exe files now include meta information,
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like .dll files already did.
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- [QTBUG-58012] (Re-)added a way to specify alternative ICU libraries.
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- [QTBUG-62150] Fixed detection of ICU in static builds.
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- [QTBUG-53537][X11] Added missing detection of Xinerama.
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- [QTBUG-61731][X11] Fixed detection of AT-SPI, allowing accessibility
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support to be built again.
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- [X11] Fixed detection of x11-xcb with pkg-config.
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- [CMake] All Qt module defines are now propagated to the config files.
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qmake
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-----
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- [QTBUG-31034] Added qmake feature and configure option to use ccache.
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- [QTBUG-48342] Fixed generation of extraneous slashes in -project mode.
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- [QTBUG-55633] Fixed misparsing of some string literal concatenations
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as C++11 raw strings. This affects dependency scanning.
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- [QTBUG-59301][Xcode] Fixed duplicate references in project files.
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- [QTBUG-59827][nmake] The 'clean' target now deletes backup files of
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MSVC manifests.
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- [QTBUG-60455][Android] libc++ is now used instead of libstdc++ when
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building with the android-clang mkspec.
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- [QTBUG-60430][iOS] Fixed handling of the deprecated variable
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QMAKE_IOS_TARGETED_DEVICE_FAMILY.
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- [QTBUG-60899][WinRT] Fixed capability handling for Win10 targets.
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- [WinRT] Added support for new Win10 capabilities.
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- [QTBUG-61335][MinGW] Worked around LTO+MRI linker issue when cross-
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building from Linux.
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- [QTBUG-61411][Windows] _UNICODE is now defined, consistently with VS.
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- [QTBUG-61688][MSVC] Fixed compilation of precompiled headers with
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CONFIG+=silent. Done by removing redundant progress messages.
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- [QTBUG-61690][QTBUG-61735] Fixed detection of compiler default search
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paths for various compilers and platforms.
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- [QTBUG-63197][Windows] Fixed moc'ing in a build directory with spaces
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when INCLUDEPATH contains 40+ entries.
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- [Android] Fixed building with ndkr16+ by using unified headers.
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- [Windows] Fixed repeated installation of read-only files.
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- [VS] Fixed deployment rules in created solution files.
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