If CountedStruct is passed a GetSenderObject object,
it will attempt to call a member on it from within
its own destructor.
That works usually quite well, but in this test case,
which tests for function object leaks when a connection
is torn down because the sender object is destroyed,
the destruction of the CountedStruct happens when all
connections are severed in ~QObject. At that point,
what used to be a GetSenderObject instance no longer
is one and the call into one of its member functions
invokes undefined behavior.
Fix by making QObject::sender() public by a using
declaration instead of a wrapper function.
Found by UBSan:
tests/auto/corelib/kernel/qobject/tst_qobject.cpp:6007:104: runtime error: member call on address 0x7ffc6e7538b0 which does not point to an object of type 'GetSenderObject'
0x7ffc6e7538b0: note: object is of type 'QObject'
Change-Id: Ia973140037b3c1b5a670a8a3949d09b956f40349
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
If QObjectPrivate::declarativeData is set, it is
in various places in Qt expected to point to a
QAbstractDeclarativeDataImpl, from which ownedByQml1
is unconditionally read.
In noDeclarativeParentChangedOnDestruction(), the
declarativeData pointer is, however, set to a local
QAbstractDeclarativeData instance, which, being an
empty class, has size 1 and alignment 1.
Depending on the compiler's idea of bit field order,
this code either read uninitialized data from the
dummy object, or else some random stack memory outside
any (valid) object.
What caught UBSan's attention, though, was the
difference in alignment between the two classes:
src/corelib/kernel/qobject.cpp:917:9: runtime error: member access within misaligned address 0x7fffc9cf706f for type 'struct QAbstractDeclarativeDataImpl', which requires 4 byte alignment
Fix by providing a properly initialized object of the
correct type.
Change-Id: Iae83a949ee5a7bc98df13e35ea614c063085fa13
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
TEST_HELPER_INSTALLS cannot be used on platforms with no
QProcess support.
Change-Id: I2a6a283d94ca4487fc628449c53fc37140dd291d
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
[ChangeLog][QtCore][QMetaProperty] write() now resets the property if an
empty QVariant is given, or set a default constructed object if the
property is not resettable
Change-Id: I9f9b57114e740f03ec4db6f223c1e8280a3d5209
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Since Connection can be copied, one copy could be used for
disconnecting, but the other's d_ptr wouldn't get updated and would
continue to report as still connected.
This patch fixes that by making it check the internal state. That is
only done after d_ptr is already known to be non-null. Unfortunately,
that is the common path:
if (connect(sender, &Sender::signal, [] {}))
will call an out-of-line function. I don't see a way out.
Task-number: QTBUG-46213
Change-Id: I66a35ce5f88941f29aa6ffff13dfb45dca68a350
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
They didn't show up in the "old" CI runs because they usually pass the second
time they are executed - which the testrunner does. The new CI doesn't do that
anymore, instead we now mark those tests explicitly and will track their record
of passing and failing in the new metrics database.
Change-Id: Id34dd6f792f38995b07b6fec88f833df64de2f8b
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Do not try to automatically register the meta type for Q_GADGET that
are not default constructible.
This fixes a source incompatibility in the function pointer syntax
of QObject::connect when such types are used as an argument of a signal.
Task-number: QTBUG-45721
Change-Id: I3065f6d57bc1f37e16988d2dee99118de250ca56
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QObject::connect tries to determine if the arguments are registered
metatypes. This used to work even for arguments that were forward
declared. But now, the metatype system tries to call
QtPrivate::IsQEnumHelper<T>::Value to know if it is registered.
That fails on gcc if T is forward declared.
Apparently gcc needs to know the full type of T to pass it in the
ellipsis function, even within a sizeof expression.
So change the ellipsis expression to a template one.
Task-number: QTBUG-44496
Change-Id: I7fa07bd3cde470b134c2ec53b0d581333d16a6f1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Properly QSKIP tests that use disabled QProcess and symlink
features instead of excluding them silently by #ifdef.
Other reason is that moc doesn't respect QT_NO_* defines
in class definition which causes build issues on some
platforms.
Change-Id: I041020f7452f7d36c7ec8a5866a4ba5eb23d1f94
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Jason McDonald <macadder1@gmail.com>
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Outdated header.LGPL removed (use header.LGPL21 instead)
Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)
Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination
Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
In replacement for Q_ENUMS and Q_FLAGS.
Q_ENUM(Foo) has to be put after the declaration of Foo in an object.
It will tell moc to include the enum in the meta object (just like
Q_ENUMS) and will allow templated code to get the metaobject for
that enum.
Will be used by QDebug and QMetaType
Change-Id: Iefaf8ae07dc0359828102bf384809346629b3e23
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Manually included changes from
3a347a4e70
in src/opengl/qgl.cpp.
Conflicts:
src/opengl/qgl_qpa.cpp
src/plugins/platforms/android/androidjnimain.cpp
Change-Id: Ic26b58ee587d4884c9d0fba45c5a94b5a45ee929
Fix disconnection from pointer to member signal that belongs to the base
class, but whose type is a pointer to a member of the derived class.
Commit 9cc106d9d7 fixed connect, so apply
the same fix in disconnect
[ChangeLog][QtCore][QObject] Fixed disconnecting from pointer to member
signal that belongs in the base class but whose type is explicitly given
as a pointer to a member in the derived class
Task-number: QTBUG-40638
Change-Id: Ia546fc8f36e1ea0dd0645bdd820aea47f43677ac
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QMetaType::create can call user code and we should not keep mutex held as
this may cause dead lock.
Make sure the tst_qobjectrace actually emit some signal so the test check
there is no race if the receiver object is destroyed while
the mutex is unlocked.
Task-number: QTBUG-39990
Change-Id: I56ca1ae7a11cd7b33c1a68727370972862e11c2f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The slot object was deleted after the mutex was relocked, which caused
a deadlock in case the functor destructor locked the same mutex again.
Change-Id: I5b4fb22fdb4483f91c89915872bfd548c31b0eea
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
q_func() which is declared in Q_DECLARE_PUBLIC is usually private.
We should use q_ptr directly in QObjectPrivate::connect, otherwise
it does not compile when trying to access the private q_func
Change-Id: I235165a0994327102dbb31c390c2cafdffe806dc
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
For example, QObject is non copyable (its copy constructor is deleted or
private via Q_DISABLE_COPY). It should still be allowed to pass a reference
to a QObject as an argument to as signal (or slot).
This fixes a compilation failure.
Task-number: QTBUG-36119
Change-Id: I9bcf477e347d69fdae2543c99781b6421883be78
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
According to docs DynamicPropertyChange event should be sent from
setProperty function only when property is added, removed or
changed.
Change-Id: I080a27a4119a63580b03172f4b5b367338c6f440
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
tst_QObject is getting big, so make a separate test for QSignalBlocker,
but leave parts of signalsBlocked() in tst_QObject as that seemed to
have been the only check for blockSignals(true) actually blocking signal
emission.
Change-Id: I1cfac035e0e39203eea8626d43f316cc6244ee86
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
When QSignalBlocker was reviewed, move semantics were asked for.
This patch add them.
This makes QSignalBlocker usable as a by-value argument (to transfer
control of signal blocking into a function) as well as as a return
value (to transfer control of signal blocking out of a function).
Change-Id: I714aa2a283bb33dba76e860649e88ed202e913c5
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
It's unexpected that all messages generated by the stream version
of qDebug and friends have a trailing space. It also makes switching
to categorized logging (which only supports the stream version) difficult,
since all autotests checking for debug output would have to be adapted.
Task-number: QTBUG-15256
Change-Id: I8d627a8379dc273d9689f5611184f03607b73823
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
As the last line in the QObject destructor, we call setParentHelper(0) to
remove ourselves from the parent. In the process of that we also initiate the
QML parentChanged callback. The first thing that parentChanged callback used to
do (but now does it too late, after 26350b5ceafa0ade1328037f6234a7d288eb8f48 in
qtdeclarative) is to check if the object was deleted and then return. We could
re-introduce the check there, but I think it's cleaner to not bother calling
the callback on a dead object in the first place.
Change-Id: Ia4d43b65a9b3744a451b4c312a2d6f9c0e3b67dc
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
For the conflicts in msvc_nmake.cpp the ifdefs are extended since we
need to support windows phone in the target branch while it is not there
in the current stable branch (as of Qt 5.2).
Conflicts:
configure
qmake/generators/win32/msvc_nmake.cpp
src/3rdparty/angle/src/libEGL/Surface.cpp
src/angle/src/common/common.pri
src/corelib/global/qglobal.h
src/corelib/io/qstandardpaths.cpp
src/plugins/platforms/qnx/qqnxintegration.cpp
src/plugins/platforms/qnx/qqnxscreeneventhandler.h
src/plugins/platforms/xcb/qglxintegration.h
src/widgets/kernel/win.pri
tests/auto/corelib/thread/qreadwritelock/tst_qreadwritelock.cpp
tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
tests/auto/gui/text/qtextdocument/tst_qtextdocument.cpp
tools/configure/configureapp.cpp
Change-Id: I00b579eefebaf61d26ab9b00046d2b5bd5958812
Only DirectConnection is tested
Change-Id: I525c6a65428489c34e58d1d9600b4e5ebda733b9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
I don't think I ever worked on a project of non-trivial
size that didn't at some point add a QSignalBlocker.
This commit adds code, tests and documentation. Later
commits will convert naked blockSignals() calls to use
QSignalBlocker.
The implementation is purely inline to avoid the heavy
overhead of cross-dll function calls for this miniscule
task. This should not be a problem because QSignalBlocker
only uses public API and a pattern that we anyway need
to keep working until Qt 6, at least, so even changing
the implementation later will be no problem as the old
implementation lurking in non-recompiled code will be
acceptable, too.
This implementation is an evolution from KDTools'
KDSignalBlocker, with the following changes:
- Implements unblock() and reblock()
- Uses the return value of blockSignals() instead of a
separate signalsBlocked() call.
Change-Id: I1933dfd72a0f5190324be377cfca3c54cf3d6828
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Up to now, it was only possible to connect to functors in a direct
way, without being capable of using Qt::ConnectionType. This patch
allows for specifying a receiver for Functors and function
pointers, hence making it possible to specify effectively the
connection type.
To do this properly, it was needed to add an enum in FunctionPointer
representing whether the considered function is a member function
or not, to reduce ambiguity upon overloaded calls.
Moreover, now senders are checked for the existence of a slot obj
as well. This way, should the context be freed, the slot obj and
the functor contained in it will be freed as well.
On a side note, connecting to a static slot
(like QCoreApplication::quit) specifying the receiver object is
now compiling.
Change-Id: I46474099413b1dc6ca4db9934191d469baeef070
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Q_STATIC_ASSERT gives better error with C++11 enabled.
Aslo the qt_check_for_QOBJECT_macro had warning on some compiler since
it used null reference
Change-Id: Ic6115da800064b00c50a5762f0b79f5f656bf750
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
To be consistent with signals which are public since Qt5.
Change-Id: I633077e37d0851b118c22da0681e8b8b1892ddbb
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
This prevents deadlocks in case the destructor re-enters.
(Example: a functor containing a QSharedPointer of a QObject)
This also fixes a leaked slot object in disconnectHelper.
Change-Id: Ia939790e3b54e64067b99540974306b4808a77f2
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
In QML it is common to connect signals to slots that are implemented as
JavaScript functions. QML used to maintain separate data structures that
mirrored the QObject connection list and kept references to the JavaScript
objects necessary to perform the call on signal activation.
The recent addition of functor based QObject::connect makes it possible
to store this information in QSlotObjectBase sub-class instead, which
eliminates any extra bookkeeping.
This patch adds internal connect and disconnect overloads to QObjectPrivate
that allow for connecting QObject *sender, int signalIndex to a given
QSlotObjectBase and similar for disconnect.
Change-Id: I90f43d13eb95bd884d752484cf4faacc446f4d6a
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Fix connection to pointer to member signal that belongs to the base
class, but whose type is a pointer to a member of the derived class.
The current code only use the QMetaObject of the type coming from the
function type to look up the signal id. But if the signal was casted
to a pointer to member function of a derived type, then we also need to
look in the base classes
Change-Id: Ib98fc38f63942946acb34d9f83c100991d58e4e5
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When variadic templates and decltype are supported, detect the best
overload of operator() to call.
Currently, the code takes the type of the operator(), which requires that
the functor only has one, and that it has no template parameter.
This feature is required if we want to connect to c++1y generic lambda
(N3418)
Change-Id: Ifa957da6955ea39ab804b58f320da9f98ff47d63
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
While adding a test case for the new behavior, two issues
with the connectSlotsByName implementation came up:
1. for auto-connected slots that don't exactly match a signal,
a 'compatible' one is searched. There might be more than
one of those. The implementation randomly picks any.
2. The "No matching signal for %s" warning gets printed even for
slots that can never be connected via connectSlotsMyName
anyway (e.g. "on_something"). This is inconsistent.
This fixed both: an explicit warning is printed if more than one
'compatible' signal is found and the "No matching signal for %s"
warning is only printed if the slot adheres to the full
"on_child_signal()" naming convention.
In the process I added comments and changed the code slightly to
make it more readable and explicitly hint at non-obvious behavior.
Change-Id: Icc8e3b9936188d2da8dfff9f0373c8e5c776eb14
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
QMetaObject::connectSlotsByName(QObject* o) creates a list of all
children to look for signals that match slots of o. This changeset
simply adds the object o itself to that list.
The motivation is to finally fix the long standing QtCreator bug
QTCREATORBUG-6494. Where executing 'Go to slot...' and choosing
'accepted()' for a simple QDialog named 'MyDialog' will add a
on_MyDialog_accepted() slot to MyDialog. That slot never gets
connected. More details may be found in the linked QTBUG-7595.
Task-number: QTBUG-7595
Task-number: QTCREATORBUG-6494
Change-Id: I35f52761791af697eabb569adb5faee6fae50638
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
I changed the existing test-case code to make it more scalable
in terms of adding more connectSlotsByName related tests. The
old "manual list of ints"-method was really not developer friendly.
This is a preparation for a subsequent modification of
connectSlotsByName behavior.
Change-Id: Ib760e52631ce4b5ae2a3ebdb4854849ff6c93bfe
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
This fixes QMetaType detection of const reference arguments in signals
while connecting using the new syntax and Qt::QueuedConnection
const references should have the same QMetaType as non references.
That means we need to remove the const reference while getting the
QMetaType.
Change-Id: I9b2688da7fb9ae985aec0d8fa62a1165357ffe71
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Unlike the previous implementation, this implementation is locked:
only one initialisation is ever run at the same time. It is
exception-safe, meaning that a throwing constructor will restart the
process.
Also, start using the thread-safe behaviour that GCC has offered for a
long time and C++11 requires.
Change-Id: I20db44f57d258923df64c0051358fd0d9a5ccd51
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: David Faure (KDE) <faure@kde.org>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
