QStyle was created but never removed
Change-Id: I55011377afd475af28e4ce2cf657e435dd37c96a
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
This warning has been introduced by VS2015 Update 3 and is not in our
control as the warning happens inside the system headers. To keep the
compile output clean, disable this warning.
Change-Id: I96253538c6d6774bb91cd5a4ea80dda2910e74b5
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
26238aca8c causes double deletion of the
QTouchDevice in case the post routine already cleaned up the list by the
time the touch handler gets to do it.
Just check the list of devices to see if the one we hold is still there.
If not, the pointer is likely to be a dangling one so do nothing.
This will avoid dying with bus error or similar on application exit.
Task-number: QTBUG-51562
Change-Id: I50c1edee7405aad308274538219698388c2cc9f9
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
The first part adds QTabBarPrivate::initBasicStyleOption()
which is basically QTabBar::initStyleOption() but
without the expensive QFontMetrics::elidedText() call.
That is because QTabBar::tabSizeHint() would call
initStyleOption() and then immediately discard the result
of that computation.
Then, QTabBar::tabSizeHint() is modified to cache the calls
to QFontMetrics::size(), which is also expensive. The cache
is invalidated when the style or the font changes, or when
the elide mode is set.
Change-Id: I591b2e401af3576a2ebabc5b94f19ae157e28cf2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Wayne Arnold <wayne.arnold@autodesk.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
This is only when the attached MIME data contains text, and we
fall back to rendering that text into a pixmap. It requires
getting the device pixel ratio from the source which, for now,
may be a QWidget or a QWindow. Other cases may exist, but that
would bring more dependencies than desired.
Similarly, it fixes the draggabletext example. Other examples
would require either to get updated pixmaps or change substantially
in order to support HiDPI (e.g., the fridgemagnets example).
Change-Id: I66198214233e3e06c87505744e2aaa9691fe1bb6
Reviewed-by: Filipe Azevedo <filipe.azevedo@kdab.com>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Enable switching application to fullscreen mode. This is mostly required
for desktop targets of WinRT.
Task-number: QTBUG-54517
Change-Id: I67e4020bc2ec8da86d94815e5765959f4ae2b63f
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Since STL support is mandatory in Qt 5, the sentence is a tautology
and can be removed.
Change-Id: I8676368cc917aa00a85b1113ed2a47694427b2ce
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
We should create the files with 0666 and let the umask take care of adjusting
to the final permissions in the file system.
[ChangeLog][QtCore][QLockFile] Fixed permissions on lock files on Unix to
allow for adjustments via umask.
Change-Id: Iee6a6ac3920d0ffd4465f54ac6e955f7fe087173
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: David Faure <david.faure@kdab.com>
When running under callgrind, do not bother with the use of the watchdog. The
constructor waits for the thread to start, which adds an overall run-time cost
that depends on the OS scheduling.
Change-Id: I162e2e311c43a6892ebc67dea39899e40babb61d
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>
We can't (at present) actually exercise the failure in
QWindowsLocalCodec::convertFromUnicode() that prompted us to consider
the possible failure here, but we should at least test for it.
Change-Id: I5066c88d7b4caeb48aebc6b79c355fa49e1c581c
Reviewed-by: Frederic Marchal <frederic.marchal@wowtechnology.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The section got introduced in commit 93d35c07d0, but is
ignored by browsers so far due to a non-blank space (0xc2 0xa0).
Task-number: QTBUG-55115
Change-Id: Ie0668b89c7151c934f40e033100a544011a583d8
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Sometimes, this test fails in CI due to notifications arriving
asynchronously from the OS. This happens inside closeWriteChannel()
call, where we are flushing the write buffer and I/O completion on
the read pipe could occur there as well. So, take this into account
before waiting for the new incoming data. Also, improve the checks
on successful reading and writing.
Change-Id: Iabe875fc346eb4420c72d03208d22ea861a570c6
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Before: HexRgb: 0.00230 ms per iteration, HexArgb: 0.00290 ms per iteration
After: HexRgb: 0.00051 ms per iteration, HexArgb: 0.00061 ms per iteration
This showed up as a relevant optimization when profiling KIconLoader
which uses QColor::name() as part of the key -- thanks to Mark Gaiser for
the investigation and first suggestion of a solution. I have also seen
customer code writing a replacement for QColor::name() because it was
too slow to be used as a hash key.
Change-Id: I009ccdd712ea0d869d466e2c9894e0cea58f0e68
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Instead of 'true', it should be '-1'.
Change-Id: I5e8f99153da68d34b37477ef4cedbc447fba347f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
8a33077 made QUrl::resolved() follow its documentation ("If relative
is not a relative URL, this function will return relative directly.",
where relative means scheme is empty).
However there is much code out there (e.g. qtdeclarative) which relies
on QUrl::fromLocalFile("fileName.txt") to be treated as relative, so
for now, we still allow this (in Qt 5.6.x). For Qt 5.8, this commit will
be reverted.
[ChangeLog][QtCore][QUrl] [EDITORIAL: replaces 8a33077] QUrl::resolved()
no longer treats a URL with a scheme as a relative URL if it matches
this URL's scheme. For now it still treats "file:name.txt" as relative
for compatibility, but be warned that in Qt 5.8 it will no longer
consider those to be relative. Both isRelative() and RFC 3986 say that
such URLs are not relative, so starting from Qt 5.8, resolved() will
return them as is.
Change-Id: Iff01e5b470319f6c46526086d765187e2259bdf5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
At least with the eglfs platform plugin, the QBackingStore constructor
results in a null pointer access if done before creation.
Change-Id: I2e78e70700fa48499a35c55797e1b962b6e6285a
Reviewed-by: Rebecca Worledge <rebecca.worledge@theqtcompany.com>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Use QStringRef::isNull instead of QStringRef::string()
for validation. Non-NULL str.string() may yet leave us
with a useless str.unicode(), which is the actual problem here;
whereas !str.isNull() does really confirm that str.unicode()
is sensible.
Such test prevents situation like:
const QString a;
QString b;
b.append(a); // b.isNull() == true
b.append(QStringRef(&a)); // b.isNull() == false
Auto test updated: create QStringRef from QString directly, without
any condition.
Change-Id: I082cd58ef656d8a53e3c1223aca01feea82fffb9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
The unneeded ';' triggered warnings in pedantic compilation mode.
Change-Id: Id2324823e138560bb25234306601253d7bbd713e
Reviewed-by: Richard J. Moore <rich@kde.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
According to QLocalSocket's documentation, connectToServer() must
initiate a connection attempt after opening the device. Otherwise, if
a connection succeeds immediately, connected() signal will be emitted
on closed device. So, this patch ensures that TCP-based implementation
behaves correctly.
Change-Id: I4cc9474815e091a1491a429a6dc17f9cf0154f58
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Specify the display to use by setting environment variable
QT_QPA_EGLFS_DISPMANX_ID Possible values are :
0: MAIN LCD
1: AUX LCD
2: HDMI
3: SDTV
4: FORCE LCD
5: FORCE TV
6: FORCE OTHER
Change-Id: I146db9a7f423bd4c6c1716c64d3df4d2388e85f9
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
A constraint ensuring we do not sample beyond the current scan-line
was missing in the SSE2 optimized sampling.
Discovered with lancelot.
Change-Id: Ib0ece8f8bfaa034733873dc5b8baaaad5d4c0380
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
Also make use of qdoc's \note command.
Change-Id: I276300cfcfde06e82b04793dbf25df8ec73e9838
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
... so don't use emit on them.
Just confuses readers.
Change-Id: I24365fc533b5b35f8942d6014dbc68387aa23e22
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
- Simplify the code, remove unused members
- Fix the translations of plurals to use %n
- Add tooltip displaying full paths in list
- Add context menu allowing to copy the name and open
- Display the correct slashes on Windows
- Connect the returnPressed() signals of the line edits
- Make the search recursive
- Do not search binary files by checking the mime type
Change-Id: I3663799c88931db1f58c03ea35211e7ab03737ec
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
- Port to Qt 5 connection syntax.
- Remove unneeded member variables.
- Adapt to screen size.
- Add a tab widget with a hex dump view to the preview dialog.
- Handle conversion errors in preview dialog,
add status label displaying errors and warnings about failures
and invalid characters encountered.
- Fix translated messages.
Change-Id: I916100c903e73d0d2326523753ed7398b1c34df0
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
As it were, QStringLists were not handled explicitly when comparing
QVariants. If both QStringLists contained only a single entry, they
were treated as QStrings - if both QStringLists were empty, there were
equal (correctly so) - but if one of the QStringLists had more than
one entry, the compare function fell through to returning always 1.
As discussed here: https://stackoverflow.com/a/38492467/3444217
Added rich comparison tests for all non-numerical, non-recursive
QVariants that support them (except QModelIndex and
QPersistentModelIndex)
Task-number: QTBUG-54893
Change-Id: Icc5480d9ba056ee5efe83da566c5829caa1509d7
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Emoji characters as input by the virtual keyboard are received
as a sequence of surrogates. Store state internally when a high
surrogate is received and send off the sequence when the matching
low surrogate is received via input method.
Task-number: QTBUG-50617
Change-Id: I91e763ec3e0747d6852f7c5c2057a67b0c24e0f5
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
- Use Qt 5 connection syntax.
- Introduce helper function to calculate the square size, remove
the existing 24 pixel limitation since that makes it impossible
to render 20pt fonts.
- Add filter chooser for font filters.
- Add menu and info dialog showing DPI and default fonts.
- Streamline code
Change-Id: I0cd4d0475b5a7ed3c475de7a413abebbe688dfe2
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
Various transition functions checked on m_tranTimes.size() > 0 inside
a block which was conditioned on this already; simplify the code by
knowing this is true already. Tidied up an initializer at the same
time.
Change-Id: I3e933a69e1b71b94bfd4451e4d761844da669d33
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
As reported by UBSan:
tst_qtreeview.cpp:2187:36: runtime error: downcast of address 0x7ffc15749f20 which does not point to an object of type 'PublicView'
0x7ffc15749f20: note: object is of type 'QTreeView'
Fix by making the test a friend of QTreeView (and, for
Clang, of QAbstractItemView) instead.
Change-Id: I5b748696ab441a91058f4d45a18bd5ed75a6e560
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
As reported by UBSan:
tst_qabstractitemview.cpp:336:23: runtime error: member call on address 0x7ffe6fe96e10 which does not point to an object of type 'TestView'
0x7ffe6fe96e10: note: object is of type 'QListView'
tst_qabstractitemview.cpp:337:5: runtime error: member call on address 0x7ffe6fe96e10 which does not point to an object of type 'TestView'
0x7ffe6fe96e10: note: object is of type 'QListView'
tst_qabstractitemview.cpp:338:23: runtime error: member call on address 0x7ffe6fe96e10 which does not point to an object of type 'TestView'
0x7ffe6fe96e10: note: object is of type 'QListView'
[etc ...]
Fix by making the test a friend of QAbstractItemView instead.
Change-Id: I1a08977042296eb34e9dbdb5c0595662dbd2e5ef
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
As found by UBSan:
qdatawidgetmapper.cpp:212:59: runtime error: member call on address 0x2b6cc8095be0 which does not point to an object of type 'QFocusHelper'
0x2b6cc8095be0: note: object is of type 'QLineEdit'
Just make QDataWidgetMapperPrivate a friend of QWidget.
Change-Id: I33d8d430c3a03b7173358d0f96dc7f850d11697c
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Instead of storing a pointer to a string, store the string
in the RGBData struct. It's not as efficient as in other
such cases, because one string is particularly long, but
it's still more than acceptable.
Text size increases slightly, but data size decreases a lot
(can't say by how much, exactly, as I'm on a UBSan build).
Change-Id: I1df2985fd1ebfccd84b48315d8d319dd9e25c8e7
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
We can't forward a VerticalSortHint or HorizontalSortHint hint, because we might
be filtering extra items.
The documentation of QAbstractItemModel::LayoutChangeHint states:
Note that VerticalSortHint and HorizontalSortHint carry the meaning that
items are being moved within the same parent, not moved to a different
parent in the model, and not filtered out or in.
And some of the views rely on this assumption (QQmlDelegateModel for example)
What happens in the test is the following:
- 'model' emit the dataChanged signal when its data is changed.
- 'proxi1' QSortFilterProxyModelPrivate::_q_sourceDataChanged does not forward
the dataChanged signal imediatly, it will instead first re-sort the model and
call layoutAboutToBeChanged / layouChanged with the VerticalSortHint
- 'proxy2' would forward the layoutAboutToBeChanged with the hint, but in
QSortFilterProxyModelPrivate::_q_sourceLayoutChanged, it will redo the mapping
which will cause the changed data to be filtered.
So proxy2 can't forward the VerticalSortHint as it removed rows in the process.
Change-Id: I20b6983e9d18bf7509fe6144c74f37d24e4a18c2
Reviewed-by: Tobias Koenig <tobias.koenig@kdab.com>
Reviewed-by: David Faure <david.faure@kdab.com>
The Freetype cache was almost completely disabled by
134c6db858 because after that
change, the lockedAlphaMapForGlyph() function would no longer
cut off early for empty glyphs like spaces, but rather go
through all alpha map functions before it realized that there
was nothing to render. This would in turn invalidate the cache
for every empty glyph, causing all glyphs to be rerendered for
every isolated word.
This change adds back a cut off. This is only needed in the
lockedAlphaMapForGlyph() function, since the superclass implementation
of the other alpha map functions already contains a cut off for
width/height == 0.
[ChangeLog][Qt Gui][Text] Fixed a performance regression in Freetype
engine that was introduced in Qt 5.5.
Change-Id: I381285939909e99cc5fb5f3497fecf9fa871f29a
Task-number: QTBUG-49452
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
In Android 7, some fonts are packed in .ttc files. We fix this
simply by including them when populating the font database.
Freetype supports this and in fact,
QBasicFontDatabase::populateFontDatabase() also adds *.ttc.
[ChangeLog][Android] Fixed CJK font resolution on
Android 7.
Task-number: QTBUG-53511
Change-Id: Iebe51b0e6ba2d6987693306cd9a12013ce886b58
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
As reported by UBSan:
tst_qtreeview.cpp:663:5: runtime error: load of value 4294967295, which is not a valid value for type 'DragDropMode'
Instead of abusing -1 to indicate to not set the dragDropMode,
use a separate boolean field in tha data.
Change-Id: I13e7539c858f3b2462d57d660062ef3cb7aec61b
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Before actually deleting QTreeWidgetItems from QTree{Model,Widget{,Item}} dtors,
their 'view' members need to be set to nullptr, lest they attempt to delist
themselves from the list of top-level items.
For the QTreeModel::headerItem, this was forgottten.
Found by UBSan:
qtreewidget.cpp:1488:70: runtime error: member call on address 0x7ffd843dd470 which does not point to an object of type 'QAbstractItemView'
0x7ffd843dd470: note: object is of type 'QWidget'
#0 0x2b83d5b48323 in QTreeWidgetItem::~QTreeWidgetItem() src/widgets/itemviews/qtreewidget.cpp:1488
#1 0x2b83d5b48860 in QTreeWidgetItem::~QTreeWidgetItem() src/widgets/itemviews/qtreewidget.cpp:1535
#2 0x2b83d5b41659 in QTreeModel::~QTreeModel() src/widgets/itemviews/qtreewidget.cpp:143
#3 0x2b83d5b41bc0 in QTreeModel::~QTreeModel() src/widgets/itemviews/qtreewidget.cpp:146
#4 0x2b83df220747 in QObjectPrivate::deleteChildren() src/corelib/kernel/qobject.cpp:2010
#5 0x2b83d4603dd0 in QWidget::~QWidget() src/widgets/kernel/qwidget.cpp:1675
#6 0x2b83d4d76066 in QFrame::~QFrame() src/widgets/widgets/qframe.cpp:256
#7 0x2b83d5270442 in QAbstractScrollArea::~QAbstractScrollArea() src/widgets/widgets/qabstractscrollarea.cpp:575
#8 0x2b83d5733eb9 in QAbstractItemView::~QAbstractItemView() src/widgets/itemviews/qabstractitemview.cpp:617
#9 0x2b83d598b216 in QTreeView::~QTreeView() src/widgets/itemviews/qtreeview.cpp:206
#10 0x2b83d5b218b6 in QTreeWidget::~QTreeWidget() src/widgets/itemviews/qtreewidget.cpp:2549
#11 0x4eef42 in tst_QTreeWidgetItemIterator::updateIfModifiedFromWidget() tests/auto/widgets/itemviews/qtreewidgetitemiterator/tst_qtreewidgetitemiterator.cpp:1089
Change-Id: I57c277adee8c99eb07b274d6d8ea1f6fbf3575be
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
If hex2int(const char*) is called with invalid input, it is expected to
return a negative value. However, it didn't check the return value of
h2i() before attempting a left-shift on it, leading to UB when the first
digit was already invalid.
UBSan agrees:
qcolor_p.cpp:55:23: runtime error: left shift of negative value -1
This is particularly worrisome as the function can be called with
unsanitized input.
Fix by checking each value for non-negativity, returning -1 early
when errors are detected.
Also port to QtMiscUtils::fromHex() and add some docs.
Change-Id: I33dbc157ffb4fbfba27113a0a008eef35c1055f7
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Just use QWidgetPrivate::get() instead.
Fixes UBSan error:
qabstractitemview.cpp:3814:61: runtime error: downcast of address 0x2b859001aa70 which does not point to an object of type 'QAbstractItemView'
0x2b859001aa70: note: object is of type 'QWidget'
Change-Id: I0460fd8a0681e122d440755ebf07018d273b93f8
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Left-shifts of negative values are undefined in C++. In particular,
they don't behave arithmetically.
Reported by UBSan:
qrasterizer.cpp:609:48: runtime error: left shift of negative value -640/-2240
qrasterizer.cpp:982:38: runtime error: left shift of negative value -2
Fix by using ordinary multiplication instead, because negative
left-hand-side values don't look like they are an error.
No errors were actually reported for a.y << 10, but I changed it
nonetheless, since all a missing error means is that the test data
didn't excercise this code path with negative Y values.
Change-Id: I1fa9deca263f12206a3f7eab6ad875fc3242269d
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
When the option expects a value the valueName parameter of the
constructor isn't optional; it must be set. This requirement is made
explicit in the documentation.
Task-number: QTBUG-54855
Change-Id: I190884aff2fa8e96bc5c5e82cdfed85be761d6e3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: David Faure <david.faure@kdab.com>
They look relative because the path doesn't start with a '/' but they
have a scheme so they shouldn't be combined as if it was one absolute
and one relative URL.
[ChangeLog][QtCore][QUrl] QUrl::resolved() no longer treats a URL with
a scheme as a relative URL if it matches this URL's scheme. This special
casing was incompatible with RFC 3986 and broke resolving data: URLs,
for instance.
Change-Id: I3758d3a2141cea7c6d13514243eb8dee5d510dd0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Left-shifts of negative values are undefined in C++. In particular,
they don't behave arithmetically.
Reported by UBSan:
qgrayraster.c:510:19: runtime error: left shift of negative value -1/-42
qgrayraster.c:537:26: runtime error: left shift of negative value -1/-4/-128
qgrayraster.c:538:26: runtime error: left shift of negative value -1/-4/-128
qgrayraster.c:641:28: runtime error: left shift of negative value -1/-42
qgrayraster.c:676:44: runtime error: left shift of negative value -1/-4/-5/-14/-129
qgrayraster.c:807:19: runtime error: left shift of negative value -1/-42
qgrayraster.c:1101:9: runtime error: left shift of negative value -32/-46/-224/-8160
qgrayraster.c:1102:9: runtime error: left shift of negative value -32/-2626
qgrayraster.c:1454:36: runtime error: left shift of negative value -32/-96/-224/-466/-2626/-8160
qgrayraster.c:1535:30: runtime error: left shift of negative value -32/-46/-224/-2626/-8160
Fix by using ordinary multiplication instead, because negative
left-hand-side values don't look like they are an error.
Change-Id: I2e96de51adb4a030de8a49869ddd98a31dab31b3
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
There was a race condition between QObject::disconnect() and
QMetaObject::activate() which can occur if there are multiple
BlockingQueued connections to one signal from different threads and
they connect/disconnect their connections often.
What can happen in this case is:
T1 is in activate() method and T2 is in disconnect() method
T1 T2
locks sender mutex
selects next connection
unlocks sender mutex
locks sender mutex
sets isSlotObject to false
creates QMetaCallEvent derefs connection
posts event
Two things can happen here:
1. Connection can still be valid, but it will have isSlotObject==false
and callFunction will be used instead of slotObj
2. Connection can already be invalid
To fix it mutex unlock should be moved after QMetaCallEvent creation.
Also there is another case, when we don't disconnect but delete the
receiver object. In this case it can already be invalid during
postEvent, so we need to move mutex unlock after postEvent.
Change-Id: I8103798324140ee11de5b4e10906562ba878ff8b
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
