Commit Graph

4715 Commits

Author SHA1 Message Date
Andrei Golubev
6f520abdab Add new special QObjectPrivate::{connect, disconnect} for QML
Original QML-specific connection mechanism ignores the receiver argument
and uses sender as receiver. This causes uncontrollable memory growth
in certain cases as connections on receiver persist even after receiver
is destroyed

New connect() with receiver parameter uses underlying API correctly,
disconnect is provided for the symmetry (not sure it's really needed)

Task-number: QTBUG-86368
Pick-to: 5.15 6.0
Change-Id: I4580d75b617cb2c4dfb971a4dfb8e943e325572b
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2021-01-18 15:54:03 +01:00
Kai Köhne
f1465c621c QLocale: Allow direct conversion to language, country, and script codes
Currently the codes are only exposed in aggregated form, i.e. through
name(), bcp47Name(). There are use cases though where you are only
interested in either language, country, or script codes. One example
is in Qt Linguist.

This patch therefore exposes the static languageToCode(),
countryToCode(), scriptToCode() methods that were so far only available
in the private API also in the public API.

[ChangeLog][QtCore][QLocale] Added static languageToCode(),
countryToCode() scriptToCode() methods that convert enum values
to the respective ISO code strings.

Fixes: QTBUG-39542
Fixes: QTBUG-64942
Change-Id: Ib1d5c3293e2f53245ba4c1fc8159275bcb290080
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2021-01-18 15:52:31 +01:00
Fabian Kosmale
2d8757f879 QVariant::fromValue<T>: require T to be copy constructible
In Qt 5, QVariant::fromValue<T> would not compile unless
Q_DECLARE_METATYPE(T) was used, and Q_DECLARE_METATYPE(T) would lead to
a compile error if T were not copy constructible.
In Qt 6, we do not require Q_DECLARE_METATYPE before using fromValue,
and QMetaType itself works with non-copy constructible types just fine.
However, QVariant still requires it, thus we need to now enforce this in
fromValue itself.

Change-Id: Ib6964a438d8c46033dd3a037b9d871de2b42e175
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2021-01-18 15:51:18 +01:00
Christian Ehrlicher
c23e8cb582 QSettings: Add support for QMetaType::Float
When writing out a float value, the output string is encoded as QVariant
for no reason. Looks like an oversight when QMetaType::Float was added a
long time ago.

Fixes: QTBUG-21156
Change-Id: I7f5d31e15892d700c1b1e5e731b7733ce3a15730
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2021-01-15 18:51:15 +01:00
Mårten Nordheim
d2e2d0d3a6 QCache: when overwriting, store the new cost instead of the delta
The delta was clearly intended to be used on the total (and still is)
but it also wound up getting stored in the cache, which wouldn't be a
big problem unless the object was removed, in which case we could
incidentally 'free up more space' than intended.

Pick-to: 6.0
Change-Id: Ib2b0f072d30da6d16a93dce60e4c5f6080c109fc
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2021-01-14 10:00:01 +00:00
Joerg Bornemann
04f11f9935 Remove .prev_CMakeLists.txt files
Those serve no purpose anymore, now that the .pro files are gone.

Task-number: QTBUG-88742
Change-Id: I39943327b8c9871785b58e9973e4e7602371793e
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2021-01-12 20:59:13 +01:00
Volker Hilsheimer
d7d6f8765f Make sure QMimeData is fully declared
The test deletes instances of QMimeData in the dropMimeData function.
The compiler warns about deleting objects of incomplete type if QMimeDate
is only forward declared.

Change-Id: I3423a7ea334180ff0b68efbecb3d3feeb0632239
Reviewed-by: David Skoland <david.skoland@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2021-01-11 16:57:41 +01:00
Fabian Kosmale
240505457b QBindable: Improve read-only support
If we create a QBindable from a const property, we should obtain a
read-only interface. Besides implementing this feature, this patch adds
a isReadOnly method to Q(Untyped)Bindable which can be used to check
whether one can modify the property via the bindable interface.

Task-number: QTBUG-89505
Task-number: QTBUG-89469
Change-Id: Ic36949a5b84c5119e0060ed0a1cf4ac94a66f341
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
2021-01-11 15:57:26 +01:00
Assam Boudjelthia
b036ca3347 Android: exclude tst_QFile::moveToTrash on Android
The Android tests were marked insignificant for some days, due to an
emulator issue, these tests slipped during that time. Exclude them now
to bring Android tests back.

Task-number: QTBUG-89398
Pick-to: 6.0
Change-Id: Ia65a0ae8d7474fd2554dda299a60371dbbc9dddb
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2021-01-11 12:15:12 +00:00
Samuli Piippo
d3399092db tst_qdatastream: expect failure on 32bit system with large QBitArray
Test data causes the QBitArray to be read as 0 byte length. Same issue
on all 32bit systems, removing android blacklisting as this was the only
one failing there.

Task-number: QTBUG-87660
Change-Id: I63f0c1c6fa4e2242e6ebe70f50e422ab0fbf1c88
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2021-01-08 12:25:55 +02:00
Joerg Bornemann
ad2da2d27a Remove the qmake project files
Remove the qmake project files for most of Qt.

Leave the qmake project files for examples, because we still test those
in the CI to ensure qmake does not regress.

Also leave the qmake project files for utils and other minor parts that
lack CMake project files.

Task-number: QTBUG-88742
Change-Id: I6cdf059e6204816f617f9624f3ea9822703f73cc
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2021-01-07 15:32:28 +01:00
Samuli Piippo
ac970d48fd tst_qdatetime: blacklist zone-change test for QEMU ARMv7
systemTimeZoneChange() fails also on 32bit QEMU ARMv7.

Task-number: QTBUG-87663
Change-Id: I5c006a8637edff0a95b1f9b76d2c58006aeae6d6
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2021-01-07 06:35:31 +00:00
Samuli Piippo
5a0f9004e2 tst_qarraydata: blacklist dataPointerAllocate on all 32bit systems
The test case fails also on QEMU ARMv7.

Task-number: QTBUG-88705
Change-Id: Ibe8c777f0205b298f6b9a27c067dd552253fcf33
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
2021-01-07 08:35:21 +02:00
Ulf Hermann
c9a1102269 Make QString and QByteArray sequentially iterable
As lists of QStrings and QByteArrays are sequentially iterable the base
types should really also be.

The only problem is that they don't have methods to remove items from
the back or the front, but that is well within what we can support with
QSequentialIterable.

Change-Id: I2ab551e7b11a092aba363fb4012d131bbc4b11b4
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2021-01-06 17:15:03 +01:00
Zhang Yu
22416ecaaf Fix QMultiHash::equal_range crashes
QMultiHash::equal_range crashes when called in a const member function.
The Data `d` is a NULL pointer when calling equal_range()
before inserting data into an empty QMultiHash.
Then calling`d->find` crashes.

Fixes: QTBUG-89687
Pick-to: 6.0
Change-Id: I10c3d196cbc72aed8c8c922ef16534bba51037b7
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2021-01-06 09:07:10 +08:00
David Faure
0cbbba2aa5 Update shared-mime-info to the 2.1 release, adjust implementation
The spec hasn't changed, but I made the same mistake in xdgmime
(the reference implementation) and in Qt: when multiple globs match,
and the result from magic sniffing is unrelated to any of those globs,
then I used the magic result, but that's wrong, globs have priority
and one of them should be picked up.

This is now fixed in xdgmime
(https://gitlab.freedesktop.org/xdg/xdgmime/-/merge_requests/3)
and in the expected results in shared-mime-info
(https://gitlab.freedesktop.org/xdg/shared-mime-info/-/merge_requests/99)
which this commit is also tested against.

This change also optimizes QMimeBinaryProvider::addFileNameMatches
to have the same logic as xdgmime for glob matching:
literals > extensions > other globs
As soon as one category matches, we can stop there.
This makes no difference in the overall results, in practice.

The user bug report (against the Qt implementation, actually)
is https://gitlab.freedesktop.org/xdg/shared-mime-info/-/issues/138
as well as https://bugs.kde.org/show_bug.cgi?id=411718

Pick-to: 6.0 5.15
Change-Id: Ia0a34080427daff43c732609443ee6df8f41447c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2021-01-05 18:31:54 +00:00
David Skoland
34f0841451 Fix minor errors in tests
Fix indentation in tst_qlockfile and remove QtTest include in
tst_qcheckbox.

Change-Id: Idf630c6337859dbcc8f644010b941bfe55bb0633
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2021-01-05 12:43:09 +01:00
Edward Welbourne
6974737695 Change QLineF::setLength() to work whenever length() is non-zero
Previously it only worked when isNull() was false, which is true for
very short lines, even though length() may be non-zero.

[ChangeLog][QtCore][QLineF] QLineF::setLength() will now set the
length if the line's length() is non-zero. Previously, it was
documented to only set the length if isNull() was false; this is a
fuzzy check, so isNull() could be true for a line with non-zero
length().

Fixes: QTBUG-89569
Pick-to: 6.0 5.15
Change-Id: I803e622ad09c85815dde25df8dd3ba6dfcba0714
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2021-01-05 12:43:09 +01:00
Alex Trotsenko
e334d6f9a7 QProcess: allow pipelining for detached processes
[ChangeLog][QtCore][QProcess] Added support for
setStandardOutputProcess() with startDetached().

Change-Id: I61278cdb7084127f583c8c017688da392017b44c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
2020-12-31 12:16:46 +00:00
Alex Trotsenko
04c34eb799 QProcess: allow merged channels forwarding for detached processes
[ChangeLog][QtCore][QProcess] Added support for QProcess::MergedChannels
mode with startDetached().

Change-Id: I953ad2063322015332269522a297f8e2842e438c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
2020-12-31 12:16:38 +00:00
Andreas Buhr
741862875c Add test creating QDateTime in double-DST gap in 1947 Germany
In 1947, Germany had not only a summer time but also a
"Hochsommerzeit", a high summer time. This patch adds a test
creating a QDateTime in the time gap at the beginning of this
Hochsommerzeit on May 11, 1947.

Pick-to: 6.0
Change-Id: Ib81a23914965f092c3e3195e4c7258e5a4e0b30e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-24 19:41:48 +01:00
David Skoland
27d96b4789 Replace QtTest headers with QTest
Complete search and replace of QtTest and QtTest/QtTest with QTest, as
QtTest includes the whole module. Replace all such instances with
correct header includes. See Jira task for more discussion.

Fixes: QTBUG-88831
Change-Id: I981cfae18a1cabcabcabee376016b086d9d01f44
Pick-to: 6.0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2020-12-22 15:20:30 +01:00
Michal Klocek
b770b7517d Fix crash on reallocateAndGrow
After 6be398 few tests fail/crash with qtcharts.
Fix issue on reallocateAndGraw and avoid accessing
flags on invalid header.

Data::allocate can return invalid header and dataptr,
which takes place if capacity is 0. In code before 6be398
clone method checks if header is not null before resetting
flags. However after b76fbb4 resetting flags is no longer
needed since it is done in allocateGrow.

Task-number: QTBUG-89092
Pick-to: 6.0
Change-Id: I2fde781dad7a0694a5f17ab716f647c2e35f4ff0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
2020-12-21 10:35:16 +00:00
Friedemann Kleint
ec7eb1eab1 Blacklist tst_QDeadlineTimer::stdchrono on Windows/clang
It has been failing consistently, recently.

Pick-to: 6.0
Change-Id: I71b2e8857c3d5ce86ad17864c95aac7265ed9a8a
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2020-12-21 10:23:15 +01:00
Fabian Kosmale
10bf3ae90c QProperty add markdirty
This adds functionality for marking properties (QProperty and related
classes) manually as dirty. This facilliates the integration of bindable
properties with non-binable properties and makes it possible for
bindable properties to change due to external events.

Fixes: QTBUG-89167
Change-Id: I256cf154d914149dacb6cadaba92b13c88c9d027
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
2020-12-18 13:10:46 +01:00
Alex Trotsenko
7a4e686240 QSocketNotifier: hone setSocket() API
Remove a second argument to the setSocket(qintptr, bool) function as
it makes the API harder to understand.

Change-Id: Ib1852a4e9d96adde35bfbf0fe03b386d9ded395a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
2020-12-17 21:33:17 +02:00
Samuli Piippo
331fdee9dd qRound: do not expect failure on ARM64
Amend aa136d46e1 that changed qRound()
implementation to use __builtin_round() functions on ARM64 which do
not fail "round largest representable float less than 0.5" test,
unlike the simple version of qRound() used elsewhere.

Change-Id: Ic66cb0f826d91cd6a85ad72b646c79ded1c0eeca
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2020-12-17 18:29:48 +00:00
Sona Kurazyan
d75c5026e9 Clean-up warnings in corelib/thread tests
Fixed the following warnings:

 - empty expression statement has no effect; remove unnecessary ';'
   to silence this warning
 - zero as null pointer constant
 - no previous extern declaration for non-static variable
 - use of old-style cast
 - integer conversion warnings

Change-Id: Ieb31b127ce8e3b543aaf88a8e8fc463dcc8bc4e3
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2020-12-17 14:33:56 +01:00
Friedemann Kleint
a46a723dba Tests: Fix building with qmake on Windows
Apparently some library definitions went overboard, link them directly.

Pick-to: 6.0
Change-Id: I009737f7e3edff5619241b700a627dc4e25e6018
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-12-17 13:02:15 +01:00
Ivan Solovev
f0668433c4 Bindable property with initialization
Implement Q_OBJECT_BINDABLE_PROPERTY_WITH_ARGS and
Q_OBJECT_COMPAT_PROPERTY_WITH_ARGS macros.
They allow to directly initialize the property member.

Task-number: QTBUG-85520
Change-Id: I76541d6785bbbf27976b9f0b865fb45be1e9beee
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2020-12-17 12:41:13 +01:00
Mårten Nordheim
0ca4635832 QCache: fix updating entries breaking the internal chain
After f08492c6fd was
merged this bug would manifest as an entry appearing twice
in the chain when a updating an existing entry (insert with
an existing key). This could sometimes result in crashes later
as the list filled up and the list was used in trim() to remove
various entries.

Fixes: QTBUG-89176
Pick-to: 6.0
Change-Id: Ide80160fb4317dc0aefe79eec5dce7ec6813e790
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-16 14:54:17 +01:00
Andreas Buhr
3d785249ba Restore previous QDateTime behavior in DST gap
Historic QDateTime behavior when being asked to create a
QDateTime in the DST gap was to interpret the given date
as if it was in the time before that gap, mapping it to a point
in time after the gap. This has changed with
a04411119e .
Since then, the given date is interpreted as if it was in the
time after the gap, thus being mapped to a point in time
before the gap.
This patch restores the historic behavior.
This was not caught by Coin because machines ran in timezone
"Atlantic/Reykjavik" which does not have DST since 1967.
This patch changes tests to always run in "Europe/Oslo".
Driveby: Test function "findSpring" did some operations in
local time, even though being asked to work in a specific
time zone. Fixed that.

Fixes: QTBUG-86960
Fixes: QTBUG-89208
Pick-to: 6.0 5.15
Change-Id: Iecce5898bf9711a10e7dfc0a25e4bbeaed1c8ade
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-15 15:54:46 +01:00
Alex Trotsenko
6dac45b246 QSocketNotifier: extend API to provide more flexible startup
Technically, having a single constructor limits the use-cases for this
class. We should take into account that:

  - an opened socket descriptor must be available at the moment of
    construction;
  - the constructor unconditionally enables the notifier (the possible
    solution

        notifier = new QSocketNotifier(...);
        notifier->setEnabled(false);

    is suboptimal due to heavy operations inside the event dispatcher);
  - for these reasons, QSocketNotifier most often cannot be a member of
    another class (we have an extra allocation and indirect access).

This patch addresses this shortcoming by making it possible to set the
socket descriptor at a later point:

[ChangeLog][QtCore][QSocketNotifier] Added setSocket() and an additional
constructor which requires no socket.

Change-Id: I2eb2edf33ddafe99e528aac7d3774ade40795e7a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
2020-12-11 18:08:31 +02:00
Sona Kurazyan
335acffe1d Add support of invoking QFuture continuations in a given context
Added overloads of .then()/.onFailed()/.onCanceled() which take a
pointer of a context object, and invoke the continuations in the
object's thread.

Task-number: QTBUG-86794
Change-Id: I0f3cbb0500695673fc4087af5d4b96b416e3e1ce
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
2020-12-11 09:36:45 +01:00
Thiago Macieira
928b51704a tst_QFile: add a couple more sequential Unix device files
/dev/zero and /dev/null are expected to always be present in any system
(even containers). Unlike /dev/null, you *can* read from /dev/zero so
test that QIODevice doesn't think it is random-access because of that.

/dev/tty is also always present but has an interesting semantic. Could
also try /dev/full, /dev/random and /dev/urandom.

Change-Id: Ia2aa807ffa8a4c798425fffd15d84b60573f2c26
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
2020-12-10 15:20:33 +01:00
Alexandru Croitor
2304acab5f CMake: Regenerate projects using pro2cmake one last time
And fix up some wrong qmake project files

Pick-to: 6.0
Change-Id: I66cb82aeb9c1419a74df1a650fa78a511ade7443
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-12-10 11:52:30 +01:00
Giuseppe D'Angelo
ce0b767310 QStringView: add some QRegularExpression-related overloads
[ChangeLog][QtCore][QStringView] Added the indexOf(), contains(),
lastIndexOf() and count() methods taking a QRegularExpression.

Fixes: QTBUG-89050
Change-Id: Ic726754f67e06b3764302d2fad252e0378a77afc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-10 02:15:18 +01:00
Giuseppe D'Angelo
be83ff65c4 QString::lastIndexOf: fix off-by-one for zero length matches
Otherwise, it would report that lastIndexOf of an empty pattern
in an empty string doesn't exist. Next commit adds extensive autotests;
for now, disable a broken autotest (which already features a comment
about why it's broken).

Change-Id: I9a0e5c0142007f81f5cf93e356c8bd82f00066f7
Pick-to: 5.15 6.0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-10 02:15:18 +01:00
Thiago Macieira
4a1091f489 QUrl: fix parsing of empty IPv6 addresses
There's an assertion. Found by Google fuzz scan of CBOR data.

Pick-to: 6.0 5.15
Change-Id: I55083c2909f64a1f8868fffd164f1ff3af71605b
Reviewed-by: David Faure <david.faure@kdab.com>
2020-12-09 12:40:31 -08:00
Thiago Macieira
c000143ee4 QDeadlineTimer: optimize when std::chrono::steady_clock is the same
Change-Id: Ib57b52598e2f452985e9fffd14583173716343b0
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-09 12:54:59 -07:00
Giuseppe D'Angelo
7c3208c97d QString: fix count(QRegularExpression)
There is an off by one in the implementation of count(): a match
must be attempted even at the very end of the string, because
a 0-length match can happen there. While at it, improve
the documentation on the counter-intuitive behavior of count(),
which doesn't merely count how many times a regexp matches
into a string using ordinary global matching.

[ChangeLog][QtCore][QString] Fixed a corner case when using
QString::count(QRegularExpression), causing an empty in the
last position not to be accounted for in the returned result.

Change-Id: I064497839a96979abfbac2d0a96546ce160bbc46
Pick-to: 5.15 6.0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-09 20:41:18 +01:00
Fabian Kosmale
ddc585b7c7 QProperty: Handle eager binding calling setBinding
When an eager binding  triggers a setBinding call, we end up with a
special kind of binding loop:
setBinding() -> evaluate -> notifyObserver
      ^                           |
      |                           /
      ----------------------------
We now catch set condition, and set the binding status to BindingLoop
(with a distinct description).

Task-number: QTBUG-87153
Task-number: QTBUG-87733
Pick-to: 6.0
Change-Id: I9f9915797d82eab820fc279baceaf89d7e5a3f4a
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
2020-12-09 12:48:36 +01:00
Thiago Macieira
017e41bb86 QCborValue & QCborStreamReader tests: fix warning about %llx on 32-bit
cborlargedatavalidation.cpp:93:60: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘qsizetype’ {aka ‘int’} [-Wformat=]
   93 |         QTest::addRow("bytearray-too-big-for-qbytearray-%llx", v)
      |                                                         ~~~^   ~
      |                                                            |   |
      |                                                            |   qsizetype {aka int}
      |                                                            long long unsigned int
      |                                                         %x

The cast to size_t is required to make the 64-bit not complain due to
the long vs long long difference.

Pick-to: 5.15 6.0
Change-Id: I00b01c01a66748508ea1fffd164a9add2a2650cf
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2020-12-07 22:54:43 +00:00
Thiago Macieira
3c88728b53 tst_QCborValue: adjust the size of the minimum string that won't fit
I don't know which of the previous commits caused this: as far as I can
tell, this test should never have passed.

Pick-to: 5.15 6.0
Change-Id: I55083c2909f64a1f8868fffd164e7e8c24eec1f8
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2020-12-07 14:54:41 -08:00
Thiago Macieira
58bea7f3a2 QCborStreamReader::next: don't allocate too much memory in a QBA
Because CBOR strings are encoded in UTF-8, it's possible that the string
that won't fit a QString in UTF-16 would still fit QByteArray in UTF-8
(e.g., anything US-ASCII and most Latin text).

The previous solution was an improvement because we used to read into a
QByteArray then convert the QByteArray to QString, thus using 3x the
amount of memory (1x in QByteArray, 2x in QString). The previous commit
skipped the middle allocation and made the regular readString() function
do the decoding either directly on source memory or by reading in small
chunks (16 kB).

Future improvement for Qt 6.1: add readStringChunk(char16_t *, qsizetype)
so we can do the validation / skipping at O(1) memory.

Pick-to: 5.15 6.0
Change-Id: I7b9b97ae9b32412abdc6fffd1645458c655cc566
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2020-12-07 22:54:39 +00:00
Lars Knoll
cb39ea0581 Make the signal argument in Q_OBJECT_BINDABLE_PROPERTY optional
The intention was always that you can define properties that do
not require a changed signal. But having to explicitly pass
a nullptr as signal parameter into the macro is ugly, so
use the cool QT_OVERLOADED_MACRO to make it optional.

Pick-to: 6.0
Change-Id: I0ce366d043850f983c968d73c544d89933c48df9
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2020-12-07 15:18:44 +01:00
Thiago Macieira
638171eb10 QCborValue: avoid allocating result if data is insufficient
Similar to the previous commit which applied to QCborStreamReader, don't
allocate too much data before checking that the stream actually has that
much.

Pick-to: 5.15 6.0
Fixes: QTBUG-88256
Change-Id: I7b9b97ae9b32412abdc6fffd16454b7568a063ba
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2020-12-06 07:51:19 +00:00
Thiago Macieira
9a55f40937 QCborStreamReader: avoid allocating result if data is insufficient
By calling the internal readStringChunk() function with a QByteArray
pointer, QCborStreamReader::readByteArray() can now avoid allocating the
resulting buffer until the internals have confirmed that there is
sufficient data in the incoming buffer. As a result, we first detect the
EOF condition before we conclude the payload would have been too big for
QByteArray (validation()) test. Meanwhile, the hugeDeviceValidation()
test ends up with a few conditions where it would have copied 1 GB of
data, so limit that too.

We make a choice of reporting OOM vs DataTooLarge only if QByteArray
fails to allocate in the first place (QByteArray::resize() ->
Q_CHECK_PTR -> qBadAlloc, QtCore is always built with exceptions on).

The QCborValue unit test needed a temporary work around until we apply
the same allocation fix (see next commit).

Pick-to: 5.15 6.0
Fixes: QTBUG-88253
Change-Id: I7b9b97ae9b32412abdc6fffd164523eeae49cdfe
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2020-12-06 07:50:57 +00:00
Fabian Kosmale
e236faa75f QBindable: Disallow mutation if read-only
If a QBindable is created from a computed property, it is not possible
to actually set a value or a binding. If we try to do it anyway, we'd
get a crash. Thus we now check whether the function pointer is null
before invoking it.

Pick-to: 6.0
Task-number: QTBUG-87153
Change-Id: I5bedb9080ccf79d9b8166b80d5733d095ed76f8d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-12-04 11:22:37 +01:00
Volker Hilsheimer
ec1ac2f1b2 Fix compiler warning from discarded return value
Amend 53b7cb1bd7, match() is only used
to provoke data races.

Change-Id: Id20b11fedf7f20e74baab15bbb60c995c1a0c794
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-12-04 00:17:46 +01:00