... and also extend the documentation to explain this case explicitly.
Fixes: QTBUG-107545
Pick-to: 6.5 6.2
Change-Id: I9414cc677b037989de60e97871485018e5c8a569
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
A null QString used to make a QVariant containing it null in Qt 5, but
this is no longer the case. Add a test that get_if works as expected.
Task-number: QTBUG-111598
Change-Id: I0f3511e1b33f4a9d67755269455680feda22ddca
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This second patch of the series implements get().
Unlike other get() implementations in Qt, don't use my trick with the
constrained friend free function here. Instead, provide the four
overloads manually, like mandated by the standard library for
std::variant (and, indeed, tuple), such that these functions can also
be used on subclasses of QVariant.
[ChangeLog][QtCore][QVariant] Implemented the type-based std::variant
access protocol (get<T>()/get_if<T>()) to allow easier access to the
contained element than the previous solution of casting data(), as
well as to allow generic code to treat QVariant and std::variant the
same. The holds_alternative<T>() function is not provided, since it's
the same as get_if<T> != nullptr. The index-based variant access
functions (get<I>()/get_if<I>()) are also not provided, because,
unlike std::variant, QVariant does not have a bounded number of
alternative types, and QMetaType IDs are not (all) compile-time
constants.
Fixes: QTBUG-111598
Change-Id: Id7bc41f7d91761b3483ec5604f1a4685c8079844
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
QVariant supports non-default-constructible payloads, in principle
(QTBUG-105140). And fromValue() works with such types, but value()
insists on providing a wide contract and therefore accidentally
requires default-constructible.
We can now invent other "Qt-ish" API like optional::value_or() or a
value() that returns optional<T>, but we should first get the
interface in that generic code must use, and which at the same time is
the most versatile, because it gives write access to the element
stored in the variant: [variant.get], consisting of get_if(), get(),
and holds_alternative(). The latter is the same as get_if() !=
nullptr, so we won't provide it.
This first patch implements get_if(), adds test for it.
As a Hidden Friend supposed to be called with explicit template
arguments, we run into the problem that wg21.link/P0846 solved for
C++20. Add the usual work-around, and check it works.
The ChangeLog will be on the last patch.
Task-number: QTBUG-111598
Change-Id: I23f57ea2de3946944810c5552c68a7a3060a44f2
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
I must have broken this in the 6.5 work I did for QMetaType and
QVariant, but I haven't searched which commit exactly did it. Our
QVariant tests are old and thus only checked the type ID, which meant
that they caused the registration by the act of asking for the ID in the
first place; this commit adds a couple of explicit checks for the type
registered by name before the ID.
Fixes: QTBUG-112205
Pick-to: 6.5 6.5.0
Change-Id: Idd5e1bb52be047d7b4fffffd174f1b14d90fd7a3
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
For single-shot timers, at least. QSingleShotTimer had either an
optimization or the only way to make new-style slot invocations by
storing the QSlotObject pointer and calling it directly. Instead of
doing that, let's just actually connect and let QObject handle the
actual delivery.
[ChangeLog][QtCore][QTimer] Fixed a bug that caused slots connected to
single-slot timers using the new-style connection mechanism to be
delivered in the wrong thread.
Fixes: QTBUG-112162
Pick-to: 5.15 6.2 6.5
Change-Id: Idd5e1bb52be047d7b4fffffd174eadb227ab65ee
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Ahmad Samir <a.samirh78@gmail.com>
In C++17, unqualified lookup doesn't find function templates that
require ADL from a call with explicit template arguments, unless
another function template of that name is in scope (otherwise, the <
is parsed as operator less-than instead).
P0846, merged for C++20, fixes this to repeat the name lookup, parsing
the < as indicating a template.
We have API in Qt (Tuple Protocol for some types, e.g. QPoint) that
work for the purpose of Structured Bindings, but don't work for manual
unqualified calls when P0846 semantics are missing, and we're adding
more, to QVariant, so add a macro to handle the issue.
The macro simply declares a function template overload of the given
name for a throw-away struct, thereby bringing, for that one name,
P0846 semantics into C++17.
When we require C++20, we can drop this again.
Amends:
- fb6b7869e8 for QPoint(F)
- 8ae9431c79 for QMargins(F)
- 0e22001a3b for the rest
[ChangeLog][QtCore][QSize/F, QMargins/F, QPoint/F] Fixed manual
get<I>() calls (Tuple Protocol) in C++17 mode.
Task-number: QTBUG-111598
Change-Id: I2ffaef12c5bb6d82f75ce78a7c03c6789dfa0691
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
I got tired of being told off by the inanity 'bot for faithfully
reflecting existing #if-ery in new #if-ery. Retain only the
documentation and definition of the deprecated define.
Change-Id: I47f47b76bd239a360f27ae5afe593dfad8746538
Reviewed-by: Ahmad Samir <a.samirh78@gmail.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
We test setKey() in repeated_setKey() these days, so speed up the test
of the test suite ever so slightly by passing the key to the ctor
instead of an explicit setKey() call.
Pick-to: 6.5
Change-Id: Ia2378c0f59cbfa9d95a0f3665b06655332247e2c
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
When this code was using QByteArray, whose data() is never nullptr,
the strings presented to the underlying C APIs were always valid NTSs
(nullptr is not a valid NTS).
With QByteArrayView, or with QT5_NULL_STRINGS != 1, this is no longer
the case. Check that all implementations are fine with that.
Pick-to: 6.5 6.4
Change-Id: I78251288a4784440af4a2daf095aed7c53867287
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
QCryptographicHash is move-only these days, so
QMessageAuthenticationCode should not be left behind.
[ChangeLog][QtCore][QMessageAuthenticationCode] Added move
constructor, move assignment operator and swap() function.
Fixes: QTBUG-111677
Change-Id: I420f24c04828e8ad7043a9e8c9e7e2d47dd183e0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Drive-by changes:
- Cleanup creating a QChar[], by creating a char16_t[] and
reinterpret_cast'ing it
- Use human-readable Unicode characters where possible
Pick-to: 6.5
Change-Id: Ice2c36ff3ea4b6a5562cf907a7809166a51abd28
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Previous setup of the test was failing in minimal static build if built
using the unity build because of the explicit inclusion of the qtcore
source files. By removing them, it surfaced that QFileSystemEntry
doesn't export all its necessary symbols for testing. So this patch does
that, as well as removing the qtcore sources from the test. It also
makes sense to make the test private.
Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: Icdabe32485b7ce4ed6049bcc24918f531406b4bd
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
I.e. tryLock(chrono::milliseconds) shouldn't call the int overload as
that truncates the timeout (milliseconds is typically int64_t).
Add a note to the tryLock(millisecons) docs that passing
milliseconds::max() will make it wait forever to obtain the lock.
Task-number: QTBUG-110059
Change-Id: Ib48d9b1b117ce816348625331543d6ba8a788973
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Previous setup of the test was failing in minimal static build if built
using the unity build because of the explicit inclusion of the qtcore
source files. In order to resolve this, I removed the inclusion of
qtcore's headers and made the test private.
Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: Id1c7b3b65ca2078354c235a718ff3e93a65362e6
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
When possible, I replaced add_executable with
qt_internal_add_executable.
Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: I643d2e27f0d880fe9b6cec7af790e4c99227fb0c
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
All the other overloads are implemented using the new one.
Windows change relies on the pre-check in the code review making sure it
compiles.
[ChangeLog][QtCore][QThread] Added sleep(std::chrono::nanoseconds)
overload.
Task-number: QTBUG-110059
Change-Id: I9a4f4bf09041788ec9275093b6b8d0386521e286
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
250ca8d5f8 changed the qConvertToNumber
to have a std::optional return instead of a boolean out-argument.
In doing so a code path that was supposed to report a failure (string
could not be converted to an integer) accidentally starting reporting
success (and converting the string to 0).
The problem is that the `ok` check from QString::toLongLong was
accidentally dropped in the refactoring; previously the function set
`ok` to false and returned 0, now the function just returns 0.
Instead, amend that return to return nullopt (because the conversion has
failed).
Change-Id: Iaedef5463f3ec500a97bd4c9bbddf977f66df61a
Pick-to: 6.5 6.5.0
Fixes: QTBUG-111867
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
state->rate is always larger than or equal to state->bitsInQueue;
when bitsInQueue == rate the queue is consumed and bitsInQueue is set to
0 again.
Done-with: Marc Mutz <marc.mutz@qt.io>
Pick-to: 6.5.0 6.5 6.4.3 6.4 6.2 5.15
Change-Id: I56d268a19fb3cd542cc027edc962253f09d97a14
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
In most QObjectPrivate-subclasses, the Q_DECLARE_PUBLIC macro is used in
the private segment of the class declaration. In that case, the q_ptr
becomes a private member of the private class, and then the
QObjectPrivate::connect function can no longer be used, as it needs to
access the d_ptr.
Fix this by declaring QObjectPrivate, and the static-assert-helper, as
friends of the class using the Q_DECLARE_PUBLIC macro.
Adapt the QObject test by moving the Q_DECLARE_PUBLIC macro into
the private section of the test-private, and add a compile test.
Pick-to: 6.5 6.5.0
Change-Id: Ifc04be3b305221e138b1e08bb3a3838d871f4fcb
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
... to make large data usable from other test functions.
Pick-to: 6.5 6.5.0 6.4 6.4.3 6.2
Change-Id: I302070121a8bb49f373c7711bc3ab9e6418874ef
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
QAIM::match() supports different matching modes. The wildcard match mode
was never meant to be specifically a filepath globbing wildcard, but
rather a generic one -- something like "*" should match into a
string like "a/b/c". This is a regression from Qt 5, where
QRegExp::Wildcard was ported to only allow for path globbing
rather than generic matching.
[ChangeLog][QtCore][QAbstractItemModel] QAbstractItemModel::match()
now uses more generic wildcard matches rather than file path globbing.
Please refer to the documentation of
QRegularExpression::wildcardToRegularExpression() for more information
about the differences.
Change-Id: I28b8a76b01fdd9c5dd8f99528fac1c7b704564bc
Fixes: QTBUG-104585
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QPropertyAlias might be deprecated, but using it should still not fail
to compile.
Pick-to: 6.5
Fixes: QTBUG-111735
Change-Id: I486cddb424b60cd3e5c539e26afca3726e29bb09
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
A glob pattern has different semantics depending on whether
it's used in "filepath mode" (FNM_PATHNAME) or not.
QRegularExpression only implemented the former, but the latter
is also useful, and possibly more "intuitive" for certain use
cases (e.g. offering users a simplified version of regexps that
however still need "*" to match a "/").
Add this support. The problems highlighted by QTBUG-111234 have
not been addressed, I've just amended a bit of documentation
relating backslashes.
[ChangeLog][QtCore][QRegularExpression] Support for non-filepath
wildcards has been added to wildcardToRegularExpression().
Fixes: QTBUG-110901
Task-number: QTBUG-104585
Task-number: QTBUG-111234
Change-Id: If9850616267980fa843bda996fcb4552b5375938
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Samuel Gaist <samuel.gaist@idiap.ch>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Apple lets us know that:
warning: 'sprintf' is deprecated: This function is provided for
compatibility reasons only. Due to security concerns inherent
in the design of sprintf(3), it is highly recommended that you
use snprintf(3) instead.
Pick-to: 6.5
Change-Id: I3130b3c7b636466b5e77adc5cb05ad4ce1faee11
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
From the manual page:
Note: modern applications may prefer to use the interfaces
described in utimensat(2).
Change-Id: Ib20d8b9b50626233852ca351452ce90841a39603
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Make them templates, for two reasons:
- so they can accept std::pmr types and, in general, any basic_string
with custom allocators and char_traits
- to break overload ambiguities with the Qt string view types
Also, add the missing C++20 char8_t overloads.
Also, avoid creation of a QString in the sizeof(wchar_t) == 2 case
(Windows). Add a comment to optimize for the sizeof(wchar_t) != 2 case
later.
Found in API review.
Pick-to: 6.5
Change-Id: I30139520f582a38863a0936f8eca4b1ed33e37c8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
C++20 doesn't like arithmetic with enums anymore. While this hasn't
caused immediate pain, yet, fix it pro-actively for an imminent patch.
As a drive-by, fix the missing space at start of comment.
Pick-to: 6.5 6.4 6.4.3 6.2
Change-Id: Id08bb227c587bc7b900c593a7b6d2655ca32eefd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Also add one for types that are neither copy- nor move-constructible.
In contrast to resize(n), the QVLA(n) ctor worked for such types, so
make sure it stays that way.
Pick-to: 6.5 6.4 6.4.3 6.2 5.15
Change-Id: If54fbc9dd6a4808175c4bcb0ffb492b33c879746
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Use it in a few places.
[ChangeLog][QtCore][QMessageAuthenticationCode] Added
QCryptographicHash-style resultView().
Change-Id: I745d71f86f9c19c9a9aabb2021c6617775dab1cf
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Both QTimer's and QObjectPrivate's destructors print a warning if the
current object lives on another thread and has an active timer:
QWARN : tst_QTimer::moveToThread() QObject::killTimer: Timers cannot be stopped from another thread
QWARN : tst_QTimer::moveToThread() QObject::~QObject: Timers cannot be stopped from another thread
This timer is used to ask the thread to quit, which in turn allows us to
destroy this QObject without a cross-thread warning. Because it's
already fired once and done its duty, we can make sure it's not active
by simply making it single-shot.
Pick-to: 6.4 6.5
Change-Id: Ieec322d73c1e40ad95c8fffd17465067b27c044b
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Add Algorithm::NumAlgorithms and use it to iterate over all
statically-available algorithms, querying their hashLengthInternal().
This avoids having to statically_assert(<= MaxHashLength) everywhere,
and auto-adjusts the buffer size in SHA1_ONLY builds.
Yes, the extra case labels for NumAlgorithms are a nuisance, but at
least the compiler will remind us when we forget, unlike a missing
static_cast(<= MaxHashLength) that might easily be forgotten.
Adjust the test (which iterates over the QMetaEnum for
QCryptographicHash::Algorithm, so finds NumAlgorithms and tries to
pass it to the hash() function which responds with a
Q_UNREACHABLE(). Only test hashLength() == 0 for that enum value.
Pick-to: 6.5
Change-Id: I70155d2460464f0b2094e136eb6bea185effc9d5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Only Ukrainian is actually recorded in CLDR as using U+0415 as
exponent separator; all other Cyrillic-using locales officially use
plain ASCII 'E'. However, it seems reasonable, in all Cyrillic
locales, to recognize both (given that they look very similar).
Task-number: QTBUG-107801
Change-Id: I70a1e60a2d9fe7e254e01d32c5bad909ea4b8c76
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Ievgenii Meshcheriakov <ievgenii.meshcheriakov@qt.io>
In some locales signs and the exponent are not single character
tokens. Replace QLocaleData::numericToCLocale() with a tokenizer that
will cope with this. At the same time, cache the locale data needed in
support of that, so that we don't repeatedly recreate QString()
objects just to compare them against input tokens.
The caching class is inspired by Thiago's proposal for fixing the
performance, which also inspires the optimization of the C locale in
the tokenizer used here.
Add some testing that round-tripping numbers via strings works for the
locales with signs and exponents that use more than one character.
Task-number: QTBUG-107801
Change-Id: I9fd8409a371ed62ed969d9ebc8b09584e752f7fb
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It was confusing entry capacity with the bucket capacity. The value
maxNumBuckets() returned was the maximum number of entries. This issue
was harmless: we would just fail to cap the maximum to an allocatable
size. But the array new[] in the Data constructors would have capped the
maximum anyway (by way of throwing std::bad_alloc).
So instead of trying to calculate what the maximum bucket count is so we
can cap at that, simplify the calculation of the next power of 2 while
preventing it from overflowing in our calculations. We continue to rely
on new[] throwing when we return count that is larger than the maximum
allocatable.
This commit changes the load factor for QHashes containing exactly a
number of elements that is exactly a power of two. Previously, it would
be loaded at 50%, now it's at 25%. For this reason, tst_QSet::squeeze
needed to be fixed to depend less on the implementation details.
Pick-to: 6.5
Change-Id: I9671dee8ceb64aa9b9cafffd17415f3856c358a0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Saw this on my FreeBSD VM. The backtrace() function thought the nearest
symbol to something was "_ZTSNSt3__110__function6__baseIFbPvS2_EEE",
which decoded to
typeinfo name for std::__1::__function::__base<bool (void*, void*)>
The function pointer type inside parameter threw the decoder for a loop
and caused it to crash with the failed assertion in qbytearray.h:
inline char QByteArray::at(qsizetype i) const
{ Q_ASSERT(size_t(i) < size_t(size())); return d.data()[i]; }
I noticed this
- because tst_qtimer hung
- because qFormatLogMessage deadlocked acquiring QMessagePattern::mutex
- because the logging recursed
- because qCleanupFuncinfo failed an assertion while formatting the
backtrace (my QT_MESSAGE_PATTERN has %{backtrace})
- because QTimer::~QTimer -> QObject::killTimer printed a warning
- because tst_QTimer::moveToThread produces warnings
Pick-to: 5.15 6.2 6.4 6.5
Change-Id: Ieec322d73c1e40ad95c8fffd17464f86e9725991
Reviewed-by: Kai Köhne <kai.koehne@qt.io>
The goal of this function is to ensure that dst is _always_
NUL-terminated. The only exception is if there's no space to write
even one NUL byte, of course, but not when src is nullptr but dst
would have space.
Update the docs to the new behavior and make them more precise.
Fix a test that assumed qstrncpy() would not write to dst for
(dst, nullptr, 10).
[ChangeLog][QtCore][qstrncpy()] Now NUL-terminates the target
buffer even when the source pointer is nullptr, provided the
target buffer has space for at least one byte.
Pick-to: 6.5 6.4 6.2 5.15
Change-Id: I7806d8c71e260f8f02b79af7b6ce94f23599dd69
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Test documented behavior and serv as a baseline for future changes.
Change-Id: I36a914694d5244c89f28f3e403e11d65492a5eef
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
We so far refetched the first observer after evaluating bindings, as
binding evaluating might change the list of observers.
However, that approach did not take into account that the 'this' pointer
might no longer be valid after binding evaluation: In case of a
QObjectBindableProperty (or a QObjectCompatProperty), binding evaluation
might cause a reallocation of the binding storage, and consequently the
invalidation of the QPropertyBindingData.
Fix this by refetching the QPropertyBindingData from the storage (if a
storage has been provided, which is always the case for the affected
classes).
Fixes: QTBUG-111268
Pick-to: 6.5 6.4 6.2
Change-Id: Ie7e143a0bbb18f1c3f88a81dd9b31e6af463584f
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Drive-by change: use UTF-16 instead of UTF-8 for Eastern Arabic
Numerals, both are not human-readable but UTF-16 is one code point
instead of the two for UTF-8, less \x.
Pick-to: 6.5
Change-Id: I721f3989b7d776ddc4f9d337b21dca9d398fcc0d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Constructing from const char* etc is already covered by
constructorQByteArray.
I took a guess that the "// b(10)" comment is about testing constructing
a QString from a QChar[] that has an explicit \0 charcater. I tried
finding what the initial intent was but the trail went cold at the
"Initial import from the monolithic Qt" commit.
Pick-to: 6.5
Change-Id: I15bcdb24e55286eb6cd3056af0714a1eed581635
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
