Commit Graph

55122 Commits

Author SHA1 Message Date
Marc Mutz
e7706429bb QLibrary: add a #warning if the fall-back plugin-meta-data parser is used
Change-Id: I4b42f8dbc9fb03fc6e7243ed4914acfb1bdfe62a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2022-02-16 01:20:13 +01:00
Tatiana Borisova
773362fb68 Fix failures for tst_eventdispatcher on INTEGRITY
- New testcase tst_eventdispatcher added under commit d292f0143f.
  It shows that only glib implementation works correctly.

Task-number: QTBUG-99123
Pick-to: 6.2 6.3
Change-Id: I7b861a6207fcb319de362645fc8f00a8ab6cd4b9
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2022-02-15 18:20:40 +00:00
Ivan Solovev
60799fc141 Android A11Y: Fix value rounding
QAccessibleInterface stores values as QVariants. When dealing with
double values, as a result of some calculation (for example, Slider
value update), rounding errors can be introduced.
When converting double values to QString using QVariant::toString(),
these rounding errors result in strings like
0.30000000000000004 instead of 0.3 or
2.7755575615628914e-17 instead of 0.3 - 3 * 0.1 and similar zeroes.

To fix this issue, this patch introduces a custom conversion for
floating-point values. The idea is to convert QVariant to double,
and then convert double to QString using 'f' format and a suitable
precision, determined from the UI element's minimumStepSize(), if
it has one, otherwise falling back to QString::number()'s default
(which is 6).

Task-number: QTBUG-93396
Pick-to: 6.3 6.2 5.15
Change-Id: Ia5ca7345812e39629e9c191b6d8b896a8f51de80
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
2022-02-15 17:51:33 +01:00
Ivan Solovev
a374d59abc Android A11Y: Announce value together with element name when focused
Before this patch when we focus a new element, only its description
was announced.
For elements like Slider that means that if it had no accessible name
or description, its value would be announced (all is fine here).
But if the slider is defined like that:
 Slider {
     Accessible.name: "int slider"
     value: 5
     from: 0
     to: 20
     stepSize: 1
 }

only the name ("int slider") will be announced, but not the actual
value.

This patch fixes the logic of content description generation. If the
element has value, then it is added to the description and announced
as well.

Task-number: QTBUG-93396
Pick-to: 6.3 6.2 5.15
Change-Id: Ia8667149ebd867945c5f57d951fd6ade0f382598
Reviewed-by: Rami Potinkara <rami.potinkara@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
2022-02-15 17:51:33 +01:00
Ivan Solovev
b238f83380 Android A11Y: handle valueChanged events
Before this patch Android A11Y implementation was missing
ValueChanged event handling. As a result, no update was given
when the element's value was changed.

Handling these events allows us to announce value changes on such
objects like Slider, SpinBox, etc...
This is a universal method of value-change announcement, so it
supports all sorts of A11Y gestures.

On the Java side a new function was introduced to announce the
values, because we need to use the actual element's *value*,
not its accessible name or description.

Task-number: QTBUG-93396
Pick-to: 6.3 6.2 5.15
Change-Id: Ic44abd5f01b9b6f5468962131466edaf6a49d498
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
Reviewed-by: Rami Potinkara <rami.potinkara@qt.io>
2022-02-15 17:51:33 +01:00
Edward Welbourne
e5ba838045 tst_qsqlquery coding style: use braces correctly
Single-line bodies of single-line controls don't need braces.
If one block of an if/else chain needs braces, the rest get them too.
One long condition needed a split that forced its body to need braces.

Change-Id: Ic4116b1273e16a586fdec18e6d8228e48a9cb07c
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-15 17:32:47 +01:00
Edward Welbourne
1013cf49c7 Prefer QString(count, character) over QString::fill()ing
It lets the string be const, if nothing else.

Change-Id: Iffc1cfe71c5f6030b3f7434f964f2f2c102bf9c0
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-15 17:32:47 +01:00
Edward Welbourne
ed0657b5e1 Avoid repeated qTableName() calls by saving in local variables
This saves repetition of the call in the midst of query strings.
This incidentally makes it possible to give informative names.

In the process, build those query strings using QLatin1String::arg(),
instead of implicitly converting ASCII strings to QString in order to
then do arithmetic with them, at least when the arithmetic involves
more than one addition. In one instance, where two branches did the
same thing with different format strings, limit the branching to
selecting which string to use, then do the common thing once.

Change-Id: I60fd7457a727bcc3872d3052d8fd638ebaf36ac2
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-15 17:32:47 +01:00
Edward Welbourne
7bac62f8cd Use lists and arrays more gracefully in tst_qsqlquery
Use initializer lists rather than << entries.
Use arrays where we don't need the lists at all.
Make them const when they can be.
Replace foreach with ranged-for.
Use auto rather than naming iterator types and save end() at the start
of the iteration to save re-requesting it each time round the loop.

Reverse arguments to a QCOMPARE() as actual should come first and
expected after, not the other way round. Change some casts from
C-style to type-as-function-style, use QString literals rather than
C-string literals that would need conversion at compile time and
QLatin1String::arg in preference to arithmetic where the same format
is duplicated.

In the process, reworked one test to put its two iterations, one over
good query strings, one over bad ones, into separate blocks using
separate const arrays, instead of reusing a list with an uninformative
name.

Change-Id: I4a272be3eb58e9dca136238277b92379d6ca076d
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2022-02-15 17:32:47 +01:00
Laszlo Agocs
b48e6e783b Convert Vulkan instance setup from Qt Quick into a Gui helper
Make it possible to reuse what's in QSGRhiSupport from other modules as
well. Both Gui (texture-based widget/backingstore composition) and
Multimedia are potential users of this in the future.

Change-Id: I1b50cc5efd6811e9bc95f6287b9576931d4bcc44
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
2022-02-15 15:36:01 +00:00
Øystein Heskestad
6deded8bc4 Change third party SHA-3 implementation to use
Task-number: QTBUG-71327
Change-Id: I14fef2a6f66dfb26f635cc7b6bde2b7cbf733ea7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2022-02-15 15:44:51 +01:00
Edward Welbourne
b55f10b2a0 Convert a table iteration to use ranged-for
The loop used an int counter that was initialized from a size_t,
provoking a warning from MSVC. Since the indexing is irrelevant in any
case, use a ranged-for loop. Since the loop was formerly in decreasing
index order, reverse the table being iterated so that entries remain
in their prior order.

Change-Id: I79b93c5a3f39a502b0cae83215b8e3665d0e17f5
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-15 15:44:51 +01:00
Marc Mutz
d34c3f9e94 QLibrary: use QStaticByteArrayMatcher
Because of code-after-return style, I don't actually know what the
code is used for, but since it's compiled, make sure to not leave a
dynamically-initialized static variable lying around, even if control
never reaches it.

Pick-to: 6.3
Change-Id: I6ce30d8c060f96a2d819ed85f79d18a7ef7e9b05
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2022-02-15 15:44:51 +01:00
Alexandru Croitor
1559cd8ff2 CMake: Document source file properties
Pick-to: 6.2 6.3
Task-number: QTBUG-100224
Change-Id: Id4d0e0d84762d9eee2beb10e850d1775ad4f3245
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-02-15 15:44:51 +01:00
Joerg Bornemann
e044c94a61 CMake: Introduce QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH
When installing conan packages we have one installation prefix per
package.  When cross-building a conan package, we need to make known
those multiple host prefixes to Qt, analogous to
QT_ADDITIONAL_PACKAGES_PREFIX_PATH.

Pick-to: 6.2 6.3
Fixes: QTBUG-94524
Change-Id: I68cbede350f95266a5fd3559e9b9c214c5858eed
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-02-15 14:48:20 +01:00
Thiago Macieira
d08f59d083 qsimd: simplify the code slightly
Only x86 requires more than 32 different bits in the CPU feature
variable, so enforce the need for 64-bit atomics only for it. Everyone
else can stick to 32-bit atomics, which are supported everywhere.

Change-Id: I54f205f6b7314351b078fffd16cf7c7d50a84102
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2022-02-15 04:20:35 -08:00
Thiago Macieira
d9f1d2c9df CMake: remove unused config.tests (atomicfptr, avx512 and stl)
Change-Id: Ib42b3adc93bf4d43bd55fffd16c10873018acb04
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2022-02-15 09:20:34 -03:00
Marc Mutz
37a25fce94 QDesktopServices: deprecate destroying URL handlers w/o explicit unsetUrlHandler()
[ChangeLog][QtGui][QDesktopServices] URL handlers that have been passed
to setUrlHandler() must now be removed by calling unsetUrlHandler()
before they are destroyed. Relying on the handler's destructor to
implicitly unset it is now deprecated, because it may already be in use
by concurrent openUrl() calls. Support for implicit unsetting will be
removed in 6.6 and, until then, a qWarning() is raised if it is
exercised.

Fixes: QTBUG-100775
Fixes: QTBUG-100779
Pick-to: 6.3 6.2 5.15
Change-Id: I0c4f91b78f847b135fdeb38766babc892bdc1379
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
2022-02-15 12:20:16 +00:00
Fabian Kosmale
06e45cbd6a QFileSystemEngine::canonicalName (Unix): clean up control-flow
When passing a nullptr to realpath, it will allocate memory. That memory
has to be freed (with free) later to avoid a leak, which we so far
didn't.
This patch ensures that we always clean up the memory by using a
unique_ptr. As a drive-by, clean up the control-flow:
- Always pass either the stack buffer or nullptr to realpath.
- Rely on realpath returning nullptr in the error case.
Lastly, fix a few coding-style issues.

Change-Id: Ia906df77324020c267b087ec52a9a6c47aaa2a59
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2022-02-15 12:05:33 +01:00
Allan Sandfeld Jensen
e1b76e68d0 Fix clang-cl warning
Warns the include is non-standard, so replace it with standard
includes.

Pick-to: 6.3
Change-Id: I8db4b65a3f706cb31215332277a3378df88a0003
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-15 12:01:31 +01:00
Joerg Bornemann
85970834b5 CMake: Promote qt6_standard_project_setup from technical preview
The API couldn't be simpler (function without arguments), and we want to
use the function on our "Getting Started with CMake" documentation page.

Pick-to: 6.3
Task-number: QTBUG-100793
Change-Id: I83ba66c2970ac7441b425add4df1da2695e50ddb
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-02-15 10:23:03 +01:00
Tor Arne Vestbø
f71d54ee34 Update docs for QSurface::MetalSurface to include iOS
Pick-to: 6.3 6.2
Change-Id: I67fc47b3dc33960e7dfa78890d16d1e7450e30ab
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2022-02-15 09:11:00 +01:00
Andreas Buhr
21ce257b6c Repair tst_qcoreapplication to not segfault on Android
tst_qcoreapplication.cpp is used both in tst_qcoreapplication and
tst_qguiapplication. To distinguish these two compilations,
the define QT_GUI_LIB was used. This led to an error on Android,
where Qt::Gui is always linked, because the Qt Android Platform
Plugin needs it.
This patch introduces the preprocessor define QT_QGUIAPPLICATIONTEST
which is to be used only in the compilation of tst_qguiapplication.
This is then used instead of QT_GUI_LIB.

Change-Id: Ifa5bfacb197d68365288c1da85573106515fc6c2
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2022-02-15 09:10:59 +01:00
Joerg Bornemann
da27a95aab Compile QNetworkAccessDebugPipeBackend only in developer builds
This fixes a moc warning in non-developer builds.

Change-Id: I879a17715fd682382ce47ce4cfd7e162f8ceb2de
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2022-02-15 09:10:59 +01:00
Björn Schäpers
c6808d4296 configure: Fix -redo when configure line contained equal sign(s)
If the original configure arguments contained equal sign(s) like in
    configure ... -- -DQT_BUILD_SUBMODULES=qtbase;...

The following error message was printed:
    =qtbase was unexpected at this time.

The reason is that the conditional
    if "%rargs%" == ""
would expand to something like
    if ""-DQT_BUILD_SUBMODULES=qtsvg"" == ""
which is invalid, because the equal sign is used outside of a string
literal.

Use delayed expansion in the conditional to fix this.

Pick-to: 6.2 6.3
Change-Id: I8c40d799db2c5aae8cba190ed31804c71a605935
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-02-15 08:08:48 +00:00
Marc Mutz
3ec76f82ba QBitmap: de-inline dtor
The destructor of this polymorphic class was incorrectly marked for
removal in Qt 6, and, unfortunately, that was carried out. Now it
delivers one of the most-duplicated vtables across all of Qt (at least
four duplicates), and we can never add anything to it until Qt 7
(because existing code de-virtualized it as a no-op).

Task-number: QTBUG-45582
Pick-to: 6.3
Change-Id: I85bd3b13dca9f1fc8cb62ca079a1168a33f71323
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2022-02-15 09:08:16 +01:00
Marc Mutz
9b6c288281 De-duplicate vtables, 2022 edition
This de-inlines destuctors of classes whose vtables are proven to be
duplicated even within the set of Qt libraries.

Since these are all private API classes, we can pick all the way back
to 6.2, and we don't need the comment that the dtor must always stay
empty, like for public classes.

As a drive-by, also de-inline the QPaintDeviceWindowPrivate ctor.
That's just code hygiene, it doesn't partake in vtable duplicating.

Pick-to: 6.3 6.2
Task-number: QTBUG-45582
Change-Id: I3477063d6f42edc9a5d352c47900366fd50c3ef6
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
2022-02-15 09:08:16 +01:00
Yin Jie
60a67dc41e Position QCompleter popup based on the widget's screen geometry
If adding a QLineEdit to a QGraphicsScene as a QGraphicsProxyWidget, the popup
completion of that QLineEdit is drawn in the wrong location. When the completer
getting the rect of screen, it gets the rect of the QGraphicsScene where
QLineEdit is located rather than the rect of the screen, resulting in an error
in the following calculation.

Note that as long as the completer popup is a toplevel widget not parented
to the target widget, it will not be automatically embedded into the graphics
view via QGraphicsProxyWidget. So with multiple views for a scene, or in views
that use transformations, the geometry will still be off.

Pick-to: 6.3
Task-number: QTBUG-20531
Change-Id: If5d8a707ca35a9e4709117b077978145c6143e46
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2022-02-15 01:28:30 +00:00
Andreas Buhr
936771d901 Activate tst_QFutureWatcher for Android
tst_QFutureWatcher was deactivated for Android. This patch activates it.

Fixes: QTBUG-88136
Change-Id: Iead82e22d73eb15c9ecd2756eb33925910bbffc0
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
2022-02-15 00:42:29 +01:00
Tatiana Borisova
23fd249b85 Exclude denormal test cases if system doesn't support it
- current INTEGRITY development pack don't support denormals for float and double.
  All values are rounded to 0.

Task-number: QTBUG-99123
Pick-to: 6.2 6.3
Change-Id: Iaaacdc4210c7ac2ec3ec337c61164a1ade0efb01
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2022-02-15 00:48:23 +02:00
Viktor Arvidsson
7794421bea Windows QPA: Correct mistake when calculating minmaxinfo
Amends 46e9852a1d

The previous code would fail if the windows taskbars are placed
to the top or left on the screen. The mistake was missed because
Windows seems to adjust the window position automatically
in case the window handles WM_NCCALCSIZE and returns 0,
which was the case for me.

Task-number: QTBUG-51327
Pick-to: 5.15 6.2 6.3
Change-Id: I38ef974f7518be63a0bacf080f3359c219284078
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2022-02-14 23:48:23 +01:00
Øystein Heskestad
c6958cbbd6 Add new third party SHA-3 implementation to replace old obsolete one
[ChangeLog][Third-Party Code] Added new SHA-3 implementation to Qt Core.
The code is available under BSD 3-Clause "New" or "Revised" License.

Task-number: QTBUG-71327
Change-Id: Ib1f1003b0ef7e6f6c3787cbbd45f3f06fc667b7e
Reviewed-by: Ievgenii Meshcheriakov <ievgenii.meshcheriakov@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2022-02-14 17:32:14 +01:00
Andreas Buhr
d456102962 Make Droid Sans Mono available as fixed font for all Android styles
Fixes: QTBUG-87405
Change-Id: I54ebc06c82c32acd0383ea5fedf78acce4e11977
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
2022-02-14 16:22:28 +01:00
Marc Mutz
40e2bf3495 QFlatMap: temporarily disable some code
... which implements or assumes something about the
broken^Wnon-STL-compliant insertion behavior.

Once this has integrated into all module dependencies, we can
re-implement these APIs using STL-compatible semantics.

Task-number: QTBUG-100092
Change-Id: I54f4f5ce7addd9543866d2c399f48aff50983b88
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2022-02-14 13:20:03 +01:00
Dimitrios Apostolou
c37d0e84bc Clean up QNX platform configs and improve testrunner scripts
QNX requires its own TESTRUNNER script in order to SSH to the QEMU guest
and run the tests. Simplify it a lot and fix the way it passes arguments
so that they retain spaces and quotation.

Also wrap it with the generic TESTRUNNER script for CI, which is
qt-testrunner.py, so that tests can re-run in case of flakiness.

Delete prefix.sh as the environment variables are now properly set in
the Coin platform config files.

Avoid executing extra chmod commands to make scripts executable,
but use the right Coin instruction for that. For reference, we
use 493 for file mode which equals to 755 in octal, as Coin expects
the file mode in decimal.

Change-Id: Ife4d1caef606f48b92ba1da1cfb14ec0dea11ef2
Reviewed-by: Pasi Petäjäjärvi <pasi.petajajarvi@qt.io>
2022-02-14 12:56:06 +01:00
Eskil Abrahamsen Blomfeldt
d6c4a3edf9 Fix integer overflow for broken QPainterPaths
With some bogus input, we can end up with NaN in the
bounding rects of the control points. This in turn
causes problems later when it is converted to ints
and used in code. To avoid it, we exit early if the
rect is invalid (negative or NaN size).

Pick-to: 5.15 6.2 6.3
Fixes: QTBUG-100217
Change-Id: Idbc6700b85cb30198d69fedbf8f3be3e1ab65e40
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2022-02-14 12:51:10 +01:00
Kai Köhne
8275611766 Core: Remove 'properties' feature
Even QtCore alone cannot be built without the properties feature since
Qt 5.5. While fixing this is easy, other modules like dbus,
networking are also using QObject::property() and friends liberally.

All in all I doubt that anybody will miss the feature (otherwise it
would have been fixed in the last decade).

Change-Id: Iaf3cc20bda54ee2ff3b809fac8fa82b94ecc88c0
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2022-02-14 12:50:59 +01:00
Ivan Solovev
b99fdae5f5 Android A11Y: populate child elements when constructing node info
This commit partly reverts 020a6f0dae.
It restores the code that is responsible for filling the children
for individual elements. Without this code, we have only top-level
element and its children in our accessibility hierarchy.

Fixes: QTBUG-100545
Pick-to: 6.3 6.2 5.15
Change-Id: I0604bbf5f1bdb0b3998a25fec7ed0a1fe554da8d
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
2022-02-14 09:34:36 +01:00
Marc Mutz
c8e03f129e QHashSeed: remove 'pure' attribute on globalSeed()
While 'pure' in GCC is weaker than Stepanov's Regular Procedure from
Elements of Programming (equal result for equal inputs), it does not
allow accesses to volatile memory:

> functions declared with the pure attribute can safely read any
> non-volatile objects

The globalSeed() function reads from an atomic variable that can be
changed at any time from another thread.

Atomics, while not volatile objects in the sense of the keyword, must
fall under the pure attribute doc's exclusion criterion:

The difference between a volatile and an atomic access, while
important for the implementation of the function, is indistinguishable
to the caller of the function: both volatile and atomic objects can
change value without the current thread of execution changing them,
with no way for the caller of the function to distinguish which one
occurred.

Therefore, globalSeed() should not be pure.

5.15 is not affected, as qGlobalQHashSeed() is not marked as pure.

Task-number: QTBUG-62185
Pick-to: 6.3 6.2
Change-Id: I6fc52e2bd41ef4aa3f8039072b47c7a1314b98fa
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2022-02-12 12:39:52 +01:00
Marc Mutz
b5c4d1f50b QPkmHandler: make const what it never modified
Pick-to: 6.3 6.2 5.15
Change-Id: I0bda0d93ebe60d4923f3e9eb059cddb61192b1b5
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2022-02-12 12:39:52 +01:00
Marc Mutz
f482e2a456 QDesktopServices: fix ABA problem in QOpenUrlHandlerRegistry
The registry is designed to be thread-safe, as is openUrl(), and
handlers are required to be thread-safe, too: "the handler will
always be called from within the same thread that calls
QDesktopServices::openUrl()".

The handlerDestroyed() slot was invoked using AutoConnection
semantics, which, if the registry and the handler happen to not be on
the same thread, is QueuedConnection, which means there's a window in
which the handler is destroyed, but it's still listed in the registry,
and a call to openUrl() may make a call to the (deleted) handler.

Worse, if a handler is deleted and new one registered they may end up
on the same address (ABA, or rather, AA problem), and then the delayed
call to handlerDestroyed() may remove the entries to the new handler,
as well as those to the old.

Fix by using Qt::DirectConnection. This fixes the ABA problem, but
doesn't completely fix the partially-destroyed problem, since
QObject::destroyed() is simply too late. We need to require explicit
unsetUrlHandler() calls, which should happen before destruction of the
handler object starts.

[ChangeLog][QtGui][QDesktopServices] Fixed a bug where destroying and
re-creating a handler object in quick succession could cause the
registration for the handler to be lost.

Fixes: QTBUG-100778
Pick-to: 6.3 6.2 5.15
Change-Id: I76fd81724504cc7f38ac262b43e3e9539fe5ebca
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2022-02-12 11:39:52 +00:00
Marc Mutz
42e13b7c61 QDesktopServices: fix UB (data race on handlers)
The handlerDestroyed() function is connected to the handler QObject's
destroyed() signal and removes all entries from the registry for which
the destroyed object was listed as the handler.

While handlerDestroyed() is always executed in the context of the
thread owning QOpenUrlHandlerRegistry-as-a-QObject, the documentation
explicitly states that "the handler will always be called from within
the same thread that calls QDesktopServices::openUrl()", implying that
calling openUrl() from a non-GUI thread is supported. The presence of
the mutex also indicates that this should work.

But then the unprotected access to the handlers variable in
handlerDestroyed() is a data race, because nothing prevents a handler
object from being destroyed concurrent to an openUrl() call.

Fix by locking the mutex.

Fixes: QTBUG-100777
Pick-to: 6.3 6.2 5.15
Change-Id: I9ef857efa609b4d16ee21063ccccd316e119576b
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2022-02-12 12:39:51 +01:00
Thiago Macieira
4fd4082c3a QStringView: add missing constexpr so we can use is_constant_evaluated
GCC 12 -std=c++20 says:

 qstringview.h:155:39: error: ‘std::is_constant_evaluated’ always evaluates to false in a non-‘constexpr’ function [-Werror=tautological-compare]

With this, it's possible to declare:

  constexpr QStringView sv = u"Hello, World!";
  QStringView f() { return sv; }

And GCC will generate:

        movl    $13, %eax
        leaq    .LC0(%rip), %rdx
        ret

Writing simply
  QStringView f() { return u"Hello, World!"; }

Causes GCC to emit a comparison loop (the std::char_traits::length
function), but at least there's no function call in either C++17 or
20. Clang 13 is able to reduce the loop to a constant and produces the
same code as the constexpr variable in either mode.

Pick-to: 5.15 6.2 6.3
Change-Id: I74249c52dc02478ba93cfffd16d282fa35a5b883
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-12 07:59:32 +00:00
Mårten Nordheim
98de89cc15 tst_QSystemSemaphore: give proper path to test-helper
Amends 29fceed2ff

Pick-to: 5.15 6.2 6.3
Change-Id: Ie386d3af68e4dff84ae893cd24cb96caf2d8e08e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2022-02-12 00:01:08 +01:00
Ilya Fedin
bc3723d462 Make indicator-application hack work in flatpak
Flatpak doesn't share $XDG_RUNTIME_DIR with the host making
QSystemTrayIcon not to work on Xubuntu/Ubuntu MATE/Ubuntu Budgie.

Although, it shares a subfolder, according to
https://docs.flatpak.org/en/latest/sandbox-permissions.html

Amends 0baa26638d

Pick-to: 6.3 6.2 5.15
Change-Id: I2d0043fc5a4c2c51e8fa1a920f3cada3b07eba6d
Reviewed-by: Dmitry Shachnev <mitya57@gmail.com>
Reviewed-by: Aleix Pol Gonzalez <aleixpol@kde.org>
2022-02-12 03:01:08 +04:00
Viktor Arvidsson
46e9852a1d Windows QPA: Fix frameless maximize on secondary screens
Frameless windows shouldn't cover the taskbar when maximized.
This has been fixed for the main screen in the past but did not
work for secondary screens. According to the code the MINMAXINFO
is only available for the main screen but I believe this is a
misunderstanding of the Windows documentation.  Besides
we use QScreen::availableGeometry() which seems to be correct.

Fixes: QTBUG-51327
Pick-to: 5.15 6.2 6.3
Change-Id: Ib2205c480359d1a870dcfcf0312fbe417f650e28
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2022-02-11 23:05:20 +01:00
Christian Heimlich
cc70c397ce Update MSVC qmake mkspecs to make -std:c++20 available for VS2019 16.11+
Set QMAKE_CXXFLAGS_CXX2A variable to -std:c++20 while building projects
with qmake and MSVC 16.11 or greater (_MSC_FULL_VER >= 192930133), when
c++2a is specified in the project config.

Pick-to: 6.2 6.3
Change-Id: If9a48d1ed16cb05c5cc01414ce8a4344e22438fe
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2022-02-11 22:05:20 +00:00
Allan Sandfeld Jensen
c0af004d74 Fix build with C++20 on macOS
The macOS standard library doesn't have std::contiguous_iterator yet, and
it doesn't seem like libc++ has it either.
Checking __cpp_lib_concepts for the C++20 official version appears to work.

Pick-to: 6.3 6.2
Change-Id: I8c31cd64de24c03b3a3f37cb393bb2f9b55a834d
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-11 22:56:35 +01:00
Allan Sandfeld Jensen
a0d1f6b5aa Remove documentation of non-existing QAccessible state
invalidEntry is commented out

Pick-to: 6.3 6.2 5.15
Change-Id: Iffb661ec85b1b633f56c9aba94c1f0727a93c987
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2022-02-11 22:56:35 +01:00
Thiago Macieira
47cf674477 QTimerInfo/Unix: Fix roundToMillisecond when it's already rounded
Don't add 1 ms when it's rounded to 1 ms.

Found when running unit tests on QNX, where the clock did not update
between two subsequent calls to clock_gettime().

All of this ought to be refactored to use std::chrono::nanoseconds.

Fixes: QTBUG-100438
Pick-to: 6.2 6.3
Change-Id: I47dc6426c33d3a66dec946ae3589694745ed1835
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
2022-02-11 13:02:35 -08:00