This class provides a reasonably-secure random number generator that
does not need seeding. That is quite unlike qrand(), which requires a
seed and is low-quality (definitely not secure).
This class is also like std::random_device, but better. It provides an
operator() like std::random_device, but unlike that, it also provides a
way to fill a buffer with random data, not just one 32-bit quantity.
It's also stateless.
Finally, it also implements std::seed_seq-like generate(). It obeys the
standard requirement of the range (32-bit) but not that of the algorithm
(if you wanted that, you'd use std::seed_seq itself). Instead,
generate() fills with pure random data.
Change-Id: Icd0e0d4b27cb4e5eb892fffd14b4e3ba9ea04da8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Change-Id: Id6533c8a444854f6215f6e47000875ef9751905b
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Commit d56c6cf7a4 was incorrect. It was a
nice try, but on a 64-bit Mac machine (x86_64 CPU), it returned
hw.cputype = 7, which is CPU_TYPE_X86. CPU_TYPE_X86_64 is only used in
Mach-O slices for fat binaries and does not reflect hw.cputype.
Task-number: QTBUG-61205
Change-Id: Ia3e896da908f42939148fffd14c54b3050b8e64b
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
The documentation says that it's equivalent to
qgetenv(varName).toInt()
But the implementation wasn't. QByteArray::toInt() verifies that the
entire string was consumed, so QByteArray("1a").toInt() == 0, but
qstrtoll alone doesn't. That is, qstrtoll("1a", ...) == 1.
The implementation also detected the base, a behavior I kept. Instead, I
updated the documentation.
Change-Id: I0031aa609e714ae983c3fffd14676ea6061a9268
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
The definitions of size_t and ptrdiff_t ([support.types.layout] p2 and
p3 respectively) do not specify that they need to be as big as a
pointer. They just need to be big enough to hold the size of the largest
object and the biggest array subscript, respectively, the platform
supports (e.g., 16-bit DOS would have them as 16-bit in all memory
models, except huge).
But we depend on them actually being the size of a pointer in many
places, such as in QArrayData::offset, that stores the linear distance
from the end of the structure to the beginning of the data, wherever it
is in memory.
It's also a good idea to verify that qptrdiff and qssize_t are the same
type.
Change-Id: I9ad33fff8b634979bdbafffd14bbd1223afc58e8
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
C++ does not specify which kind of floating point implementation is
being used. The C Standard doesn't either, but it includes a normative
reference for implementations adoping it (ISO/IEC 9899:2011 Annex F).
There are a few existing checks in qfloat16.cpp; move them to qglobal.cpp
(next to the other, similar checks), and improve them by actually
checking that the radix used for floating point numbers is 2.
Change-Id: I704a3a8efeb51014b3be23fb236654d647a6f44f
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
QSysInfo::productType() returned "osx" for all versions of macOS, even
10.12. Change 3e2bde3578 was incorrect.
[ChangeLog][Important Behavior Changes] QSysInfo::productType() and
QFileSelector behavior on macOS was restored to match what Qt used to
return in version 5.7.0 and earlier. The behavior found in Qt 5.6.2,
5.7.1 and 5.8.0 is removed.
[ChangeLog][Future Compatibility Notice] The identifiers that
QSysInfo::productType() and QFileSelector will use to identify macOS
systems will change in Qt 6.0 to match the Apple naming guidelines which
will be current then.
Task-number: QTBUG-59849
Change-Id: Ib0e40a7a3ebc44329f23fffd14b2b39392210c4f
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
It replaces Posix' ssize_t in cross-platform code. Most importantly,
it allows QStringView users to refer to QStringView::size_type by
a shorter, less intimidating name.
Change-Id: I2128fefd2ffdd258b0b55cd90802a23c6bc033f6
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
[ChangeLog][QtCore][Logging] If you set QT_FATAL_WARNINGS to a number
greater than 1, Qt will stop the application at that nth warning,
instead of on the first one. For compatibility reasons with previous
versions, if the variable is set to any non-empty and non-numeric value
different from 0, Qt will understand as "stop on first warning".
Change-Id: I0031aa609e714ae983c3fffd14676f1826f34600
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
If these lists weren't created in the first place, then they are empty.
We don't need to create it in order to conclude that. Unlike most
Q_GLOBAL_STATICS, these are almost never used and yet they were
always created due to where they were checked.
Since we're calling exists() before, there are two consequences: first,
since the list already exists, we're not allocating memory so it cannot
throw std::bad_alloc when being accessed. Second, since we've just
checked it exists, we can use QGlobalStatic's operator*(), which is
slightly faster than operator()(). The weird &(*list) syntax is only to
avoid changing the rest of the code that used a pointer
Change-Id: Ifaee7464122d402991b6fffd14a0e44f533dc3d9
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Although it's permitted to specify the project name together with
a version number for \since, it's unnecessary for Qt classes and
functions.
This change also normalizes the version formatting: '<major>.<minor>'
Change-Id: Ie5a43662077d13c31e241bcde8a7a2849d27d330
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
[ChangeLog][QtBase][General] Removed support for WinRT/Windows Phone 8.1.
Task-number: QTBUG-57288
Change-Id: Ifd6d6780cbbdb710d99556ba3d2fb2e514d4f789
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
clang/g++ still warn when encountering the implementation of a
deprecated function.
Follows up 21a247adb4
Change-Id: I6ab1695acb520ef7ce7cb1896545d02607c3ce29
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@qt.io>
g++ still warns when encountering the implementation of a deprecated
function.
Change-Id: I6a25fc8c814590e5337069f9bced0cdec97653bf
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
Provide appropriate alternative documentation where applicable.
Change-Id: I73d810938bb961a74d06d8cedb05c38675363ef0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
On a discussion in the Development mailing list it became clear that
qFuzzyCompare does not work for NaN or infinity values. That was not
mentioned in the method documentation though. This patch fixes that
hiatus. It also clarifies how to deal with the comparing to 0.0
limitation.
Change-Id: I8b6d54cc0c1136e79b0d7be1a62bc9ed394d2575
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
Reviewed-by: Martin Smith <martin.smith@theqtcompany.com>
QSysInfo::WinVersion, QSysInfo::WindowsVersion,
QSysInfo::windowsVersion(), QSysInfo::MacVersion,
QSysInfo::MacintoshVersion, and QSysInfo::macVersion() are now
deprecated.
QOperatingSystemVersion exists as a more flexible replacement.
Change-Id: Ib97d1bfb260f2595ba3c06ff8fd251c5de41cedc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Incidentally, this means that the function will no longer include the
patch version number on Android, but this is more consistent with other
platforms like Apple and Windows anyways.
Change-Id: I9996317e73e491b3a139a511efe1384c57b73e0a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This class provides a "type safe" way to compare and access operating
system version numbers.
[ChangeLog][Deprecation Notice] QSysInfo::windowsVersion() and
QSysInfo::macVersion() are deprecated and are replaced by the newly
introduced QOperatingSystemVersion.
Change-Id: I52b532de2e068ccf90faaa8342eee90c0a4145de
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Partially revert 7fc2864dc5.
Entries should be kept until Qt 6 for source compatibility.
Task-number: QTBUG-55973
Change-Id: I09346fcd9227224f878f5ee064152e85f075ae09
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Liang Qi
Thiago Macieira
Jake Petroules
Giuseppe D'Angelo
Jesus Fernandez
Marc Mutz
Sze Howe Koh
Kai Koehne
Topi Reinio
Maurice Kalinowski
Kavindra Palaraja
Friedemann Kleint
André Somers
Frederik Schwarzer
Nico Vertriest