Commit Graph

224 Commits

Author SHA1 Message Date
Marc Mutz
d2ed1074d0 tests: remove the last uses of Java-style iterators
... except where they are actually the component under test.

Java-style iterators are scheduled for deprecation.

Change-Id: If4399f7f74c5ffc0f7e65205e422edfa1d908ee8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2019-06-13 09:40:26 +02:00
Friedemann Kleint
518cf3312c Merge remote-tracking branch 'origin/5.13' into dev
Change-Id: Ia279fc4a8226626041c772902a07b2f90f37b53b
2019-05-27 15:34:10 +02:00
Qt Forward Merge Bot
264e66afb2 Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: I1bdc28a3ae825ea35e83f20fe16d2409515e5a3d
2019-05-16 01:00:11 +02:00
Edward Welbourne
d441f6bba7 Skip flaky qfloat16 1/inf == 0 test on QEMU/Arm64
It's not clear why this test fails - and only does so sometimes - but
fail it does, so we ned to skip it to let development keep going.  As
it happens, the same platform over-optimizes various computations
using qfloat16; which can at least be used to test for this platform,
since it wrongly distinguishes two qfloat16 values that theory and all
other platfomrs agree should coincide.

Fixes: QTBUG-75812
Change-Id: Ie9463d7dc21bca679337b475d13417b9f42bbf9b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2019-05-15 19:06:52 +00:00
Marc Mutz
ac83032c60 tst_qrandomgenerator: replace QLinkedList with a std::list
In preparation of deprecating QLinkedList.

This actually simplifies the code, since std::list has a ctor from size,
which QLinkedList lacks, and which the code worked around by using
initializer_list.

Change-Id: I07f9d590f863d9e4e00de73339cdfa27079f6e03
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-05-14 05:28:14 +00:00
Allan Sandfeld Jensen
d775b1fcb3 Remove handling of missing Q_COMPILER_INITIALIZER_LISTS
Change-Id: Id65b39c787235a051262544932e6717d076f1ea0
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-05-02 23:10:55 +00:00
Allan Sandfeld Jensen
b32b61f17e Remove handling of missing Q_COMPILER_RVALUE_REFS
Remove remaining handling of missing support for rvalue refs.

Change-Id: I78bab8bccfeeb9c76f464f345874364a37e4840a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-05-01 20:24:45 +00:00
Edward Welbourne
3abfa4dfff QtTestLib: handle float16 the same as double and float
In QCOMPARE, handle NaNs and infinities the way tests want them
handled, rather than by strict IEEE rules. In particular, if a test
expects NaN, this lets it treat that just like any other expected
value, despite NaN != NaN as float16 values. Likewise, format
infinities and NaNs specially in toString() so that they're reported
consistently.

Enable the qfloat16 tests that depend on this QCOMPARE() behavior.
Refise the testlib selftest's float test to test qfloat16 the same way
it tests float and double (and format the test the same way).

This is a follow-up to 37f617c405.

Change-Id: I433256a09b1657e6725d68d07c5f80d805bf586a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-24 13:09:15 +00:00
Edward Welbourne
934000c11a Implement qFpClassify(qfloat16)
This extends support for qfloat16 sufficiently for the things testlib
needs in order to treat it as a first-class citizen.  Extended tests
for qfloat to check qFpClassify() on it.

Change-Id: I906292afaf51cd9c94ba384ff5aaa855edd56da1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-24 13:08:52 +00:00
Edward Welbourne
2eb849ed51 Implement std::numeric_limits<qfloat16>
This shall make it more nearly a first-class numeric type; in
particular, I need some of these for testlib's comparing and
formatting of float16 to handle NaNs and infinities sensibly.

Change-Id: Ic894dd0eb3e05653cd7645ab496463e7a884dff8
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-24 13:08:43 +00:00
Allan Sandfeld Jensen
95f787bfdc Replace Q_DECL_NOTHROW with noexcept the remaining places
The first replacement had missed objective-C++ code some places ourside
the src dir.

In C-files Q_DECL_NOTHROW is replaced with Q_DECL_NOEXCEPT as we still
need to turn it off when compiled in C mode, but can get rid of the old
NOTHROW moniker.

Change-Id: I6370f57066679c5120d0265a69e7e378e09d4759
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-09 14:48:42 +00:00
Allan Sandfeld Jensen
5c90a96998 Remove handling of missing Q_COMPILER_CLASS_ENUM
Change-Id: I1fd6d601e49e803b4c3308fb0ca41136c628afbc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-06 16:19:14 +00:00
Allan Sandfeld Jensen
4628e5cded Remove handling of missing very old compiler feature check
Removes handling of missing Q_COMPILER_NULLPTR, Q_COMPILER_AUTODECL,
Q_COMPILER_LAMBDA, Q_COMPILER_VARIADIC_MACROS and
Q_COMPILER_AUTO_FUNCTION.

We haven't supported any compilers without these for a long time.

Change-Id: I3df88206516a25763e2c28b083733780f35a8764
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-06 13:27:15 +00:00
Edward Welbourne
7d74404325 Replace a misguided test with a valid one
The code had min and max of an integral type and tested min + min / 2,
which naturally overflowed, provoking a compiler warning.  The test
was meant to be testing min - min / 2; but min is even, so this is
just min / 2; and doubling that won't overflow (which is what the test
is about).  As it happens, min + min / 2 is in fact max - max / 2,
which *would* be a good value to test, since max is odd.  So add a
test for that and remove the broken test.

Change-Id: Iec34acbf0d5d7993d41ff844875dc10480b8eb1f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-03-27 13:43:21 +00:00
Edward Welbourne
84aea6c091 Add qFpClassify() to mirror std::fpclassify()
The rules of std don't permit us to add an overload for
fpclassify(qfloat16), so we need our own equivalent that we *can*
overload.  Deploy it in the few places we use fpclassify().

Extended qnumeric's testing to cover qFpClassify().

Change-Id: Ie5a0a5cc24599d1571404c573d33c682b0d305a5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2019-03-19 17:52:30 +00:00
Edward Welbourne
368eb2ecec Refine and extend tst_qnumeric's checks on infinity and NaN
Renamed the test, since it covers both, verified slightly more and
added checks that QCOMPARE() copes as intended.  Fixed some minor
coding-style defects in the process.

Change-Id: I49c2ffa0568a29e9e4b7f7395d4cacdeb0401da0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-03-19 17:52:20 +00:00
Qt Forward Merge Bot
67c70b22f6 Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: Ifa143cc462301aaa305c9c85360e543553a751f0
2019-02-19 01:00:08 +01:00
Joerg Bornemann
8fe3680193 Add cmdline feature to qmake
[ChangeLog][qmake] A new feature "cmdline" was added that implies
"CONFIG += console" and "CONFIG -= app_bundle".

Task-number: QTBUG-27079
Change-Id: I6e52b07c9341c904bb1424fc717057432f9360e1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
2019-02-18 07:12:14 +00:00
Liang Qi
5d5c00c676 Merge remote-tracking branch 'origin/5.12' into dev
Conflicts:
	src/gui/painting/qdrawhelper.cpp

Change-Id: I4916e07b635e1d3830e9b46ef7914f99bec3098e
2018-12-04 09:58:43 +01:00
Qt Forward Merge Bot
1b5bbacdb0 Merge remote-tracking branch 'origin/5.11' into 5.12
Change-Id: I12bcee17e349edd0dd4fd08da76361d1ffb1a727
2018-11-27 01:00:09 +01:00
Sami Nurmenniemi
71bd06d516 Make developer build tests pass for boot2qt
Some tests were fixed and others were skipped/blacklisted.

Task-number: QTBUG-63152
Change-Id: Ica7df555f8d152ee589865911130525101d4b941
Reviewed-by: Liang Qi <liang.qi@qt.io>
2018-11-26 07:06:59 +00:00
Qt Forward Merge Bot
f09fc1f352 Merge remote-tracking branch 'origin/5.12' into dev
Change-Id: I6f8d3abd3247dc980dc7834801a017a89c8f4286
2018-11-01 01:01:28 +01:00
Olivier Goffart
0330b967f2 Simplify the Q_FOREACH macro when using C++17
This way there is only one for loop, which is more optimizer friendly

Change-Id: Iaa02026627d5259c3eea1ff5664e8f22664eef73
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-10-31 09:07:49 +00:00
Ivan Komissarov
95476bfcf6 qendian: Fix float conversions
Since Qt 5.10, qTo/FromBig/LittleEndian<float/double> stopped working.
It may be confusing, but big endian floats do exist, so not to break old
code, we should support them.

Change-Id: I21cdbc7f48ec030ce3d82f1cd1aad212f0fe5dd0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-10-28 22:26:56 +00:00
Allan Sandfeld Jensen
16ebc78ef3 Fix odd test in tst_qflags
This test triggered a compiler warning for good reason, it made no
sense, trying to change it to what it was probably meant to be.

Change-Id: I01a848272b42dae2aaa58a4f5bed998644d864da
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2018-10-17 09:15:22 +00:00
Edward Welbourne
bcf0be9b8f Avoid signed/unsigned warning in template
tst_QtEndian's transformRegion_template() was getting a
signed/unsigned comparison warning when T was unsigned in a
QCOMPARE(T-value, 0); so use T(0) instead.

Change-Id: I78cb2ab96f79393def65ed2c020aa3039017ab92
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-08-16 10:10:22 +00:00
Thiago Macieira
b0085dbeea QRandomGenerator: remove unnecessary cast to float in RandomValueFP
I don't know why I did that.

Change-Id: I20fd00e600264ff98c6afffd15410722b6d95a61
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
2018-07-29 19:09:16 +00:00
Andre Hartmann
f98ee77cd3 QByteArray: toInt() and toDouble() ignore surrounding whitespaces
[ChangeLog][QtCore][QByteArray] QByteArray::toInt(),
QByteArray::toDouble() and the other number conversion functions
now ignore leading and trailing whitespaces, as their QString
counterparts already did. For consistency reasons, the same
behavior was added to qEnvironmentVariableIntValue() also.

Task-number: QTBUG-66187
Change-Id: I8b5e478ea8577b811d969286ea9e269f539c1ea4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2018-07-07 19:58:18 +00:00
Thiago Macieira
d0427759c6 Add qbswap for a memory region
The compiler was generating some vectorized code for qresource.cpp but
it wasn't very efficient. So improve upon it and make use in other
places where we read UTF-16BE strings.

[ChangeLog][QtCore] Added an overload of q{To,From}{Big,Little}Endian
that operates on a memory region.

Change-Id: I6a540578e810472bb455fffd1531fa2f1d724dfc
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2018-07-04 03:04:40 +00:00
Liang Qi
e3ed2281c0 Merge remote-tracking branch 'origin/5.11' into dev
Conflicts:
	src/plugins/platforms/cocoa/qnsview.mm
	src/plugins/platforms/cocoa/qnsview_dragging.mm
	src/plugins/platforms/ios/qiosinputcontext.mm
	src/plugins/platforms/xcb/qxcbconnection.cpp
	src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
	src/plugins/platforms/xcb/qxcbwindow.cpp
	src/tools/androiddeployqt/main.cpp
		Was moved from qttools into qtbase in 5.11.
		So re-apply 32398e4d here.
	tests/auto/corelib/global/qlogging/test/test.pro
	tests/auto/corelib/global/qlogging/tst_qlogging.cpp
	tests/auto/corelib/io/qfile/tst_qfile.cpp
	tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
	tests/auto/corelib/thread/qthreadstorage/test/test.pro
	tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp
	tests/auto/widgets/kernel/qapplication/test/test.pro

Done-with: Gatis Paeglis <gatis.paeglis@qt.io>
Done-with: Mårten Nordheim <marten.nordheim@qt.io>
Done-with: Oliver Wolff <oliver.wolff@qt.io>
Change-Id: Id970486c5315a1718c540f00deb2633533e8fc7b
2018-07-02 11:23:45 +02:00
Mårten Nordheim
d420987d54 Android: fix tst_qlogging
The "app" subfolder was already excluded in the .pro-file but Android
supports QProcess, so lets include it in the build. Unfortunately it
currently has trouble and crashes (the child process or both processes).
So we skip those tests.

Task-number: QTBUG-68596
Change-Id: I2e6d0869c408bf08b22c02145db8ce522c64c617
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
2018-06-28 07:29:30 +00:00
Oliver Wolff
00d9ade6e6 tst_qlogging: Fix execution for WinRT
Not putting executables into debug/release subdirectories leads to the
WinRT AppxManifest being overwritten by the wrong configuration. When Qt
is configured with -release for example, it was possible that the debug
manifest (Manifest files are always created next to the target) is
written last and thus contains debug VCLibs as a dependency.

Additionally the test was changed in that way, that the resulting file
system structure (having helper and test application in a "top level"
debug and release folder) is the same structure as in tst_qobject.

Change-Id: I034752b4e5d22b98f6def95fb53c2b1947dded03
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-06-27 16:06:01 +00:00
Liang Qi
c3059391fe Make tests compile for Android
This only enables compilation, it doesn't fix any test.

Qt on Android supports process, but not TEST_HELPER_INSTALLS. See also
acdd57cb for winrt.

android-ndk-r10e is used to compile, see
http://doc-snapshots.qt.io/qt5-5.11/androidgs.html .

corelib/io/{qdir,qresourceengine} need to be fixed later.

Done-with: Frederik Gladhorn <frederik.gladhorn@qt.io>
Done-with: Mårten Nordheim <marten.nordheim@qt.io>
Change-Id: I34b924c8ae5d46d6835b8f0a6606450920f4423b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
2018-06-25 08:01:19 +00:00
Olivier Goffart
e759d38d49 Declare the operator| in the Qt namespace for QFlags in that namespaces
This is a long overdue change so we don't break ADL of operator|.
I think will not break source or binary compatibility.

The problem is code like this:

  namespace Foo {
     struct MyStruct;
     MyStruct operator|(MyStruct, MyStruct);

     void someFunction() {
	fooLabel->setAlignement(Qt::AlignLeft | Qt::AlignTop)
     }

  }

This would be an error before as ADL would find only the Foo::operator| and not
the global one since the arguments are not in the global namespace.

After this change, ADL works fine and this code compiles

This bites people with misterious error, see questions on
https://stackoverflow.com/questions/10755058/qflags-enum-type-conversion-fails-all-of-a-sudden
https://stackoverflow.com/questions/39919142/broken-bitwise-or-operator-in-a-qt-project

[ChangeLog][QtCore] QFlags's operator| for enum types in the Qt namespace are
now declared in the Qt namespace itself.

Change-Id: I021bce11ec1521b4d8795a2cf3084a0be1960804
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-04-08 14:24:27 +00:00
Samuli Piippo
bcd5532fcb Fix thread_local test
If _Thread_local is used on a block-scope declaration, it must be
combined with either static or extern to decide linkage.

Change-Id: I228b3520767197c6cdf5134ff5a666ab2aca33ea
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-02-23 13:23:01 +00:00
Thiago Macieira
43c44d05ca Update the overflow functions to include qsizetype
Commit 29bc68cf16 added support for
unsigned and commit 5ff7a3d96e later added
support for int. This commit adds support for qsizetype, which isn't int
on 64-bit platforms.

We do this by reorganizing the code and using the generic version of
__builtin_{add,sub,mul}_overflow from GCC 5 and Clang 3.8, which ICC 18
seems to support now too on Linux. That leaves older versions of GCC and
Clang, as well as MSVC, ICC on Windows, and the GHS compiler, to use the
generic implementations, as I've removed the assembly code those
versions of GCC and Clang on x86 are now uncommon.

Note: any older version of ICC probably breaks. We only support the
latest.

Change-Id: I9e2892cb6c374e93bcb7fffd14fc11bcd5f067a7
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2018-01-24 21:13:20 +00:00
Friedemann Kleint
5af4cb5a5a Tests: Raise minimum supported MSVC version to 2015
Remove code for older versions and streamline #ifdefs.

Task-number: QTBUG-51673
Change-Id: If456567691538b1a1f452111814c5f9eba401c43
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-01-04 20:23:25 +00:00
Lars Knoll
0f315adf91 Merge remote-tracking branch 'origin/5.10' into dev
Conflicts:
	.qmake.conf
	sc/corelib/io/qfsfileengine_p.h
	src/corelib/io/qstorageinfo_unix.cpp
	src/platformsupport/eglconvenience/qeglpbuffer_p.h
	src/platformsupport/input/libinput/qlibinputkeyboard.cpp
	src/platformsupport/input/libinput/qlibinputpointer.cpp
	src/plugins/platforms/cocoa/qcocoamenu.mm
	src/plugins/platforms/ios/qiosscreen.h
	src/plugins/platforms/ios/qioswindow.h
	src/plugins/platforms/ios/quiview.mm
	src/printsupport/dialogs/qpagesetupdialog_unix_p.h
	src/printsupport/dialogs/qprintpreviewdialog.cpp
	src/printsupport/widgets/qcupsjobwidget_p.h
	src/widgets/widgets/qmenu.cpp
	tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
	tests/auto/widgets/itemviews/qtreeview/tst_qtreeview.cpp

Change-Id: Iecb4883122efe97ef0ed850271e6c51bab568e9c
2018-01-02 09:58:44 +01:00
Lars Knoll
db92f2f3aa Merge remote-tracking branch 'origin/5.9' into 5.10
Conflicts:
	.qmake.conf
	mkspecs/win32-g++/qmake.conf
	src/corelib/global/qglobal_p.h
	src/corelib/global/qoperatingsystemversion_p.h
	src/corelib/io/qfilesystemengine_win.cpp
	src/network/bearer/qbearerengine.cpp
	src/platformsupport/input/libinput/qlibinputpointer.cpp
	src/sql/doc/snippets/code/doc_src_sql-driver.cpp
	src/widgets/kernel/qwidget_p.h
	src/widgets/kernel/qwidgetwindow.cpp
	src/widgets/styles/qfusionstyle.cpp
	tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp

Change-Id: I80e2722f481b12fff5d967c28f89208c0e9a1dd8
2017-12-30 12:09:53 +01:00
Thiago Macieira
3d7cdb64fc qfloat16: NaN is not infinite
Change-Id: I39332e0a867442d58082fffd1502b7010424f0f8
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2017-12-27 11:50:09 +00:00
Allan Sandfeld Jensen
2c25a431d0 Use dependencies instead of CONFIG+=ordered
Also drops a few instances where the dependency was purely runtime,
especially for examples.

Change-Id: I2a0476f79928143596bdb3b8f01193af90574ae8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2017-12-02 11:09:15 +00:00
Liang Qi
87204c856a Merge remote-tracking branch 'origin/5.10' into dev
Conflicts:
	src/corelib/thread/qsemaphore.cpp
	tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
	tests/auto/widgets/itemviews/qtreeview/tst_qtreeview.cpp

Change-Id: Id35b535e88df63fdfe4007ea92ed4a39c4b6d707
2017-11-30 09:16:58 +01:00
Thiago Macieira
498ef7f9d7 Merge "Merge remote-tracking branch 'origin/5.10' into dev" into refs/staging/dev 2017-11-30 00:51:32 +00:00
Liang Qi
1139be7b30 Merge remote-tracking branch 'origin/5.9' into 5.10
Change-Id: Iede384644c3df5ee01b701806dfdb586dd6bb138
2017-11-28 11:23:35 +01:00
Giuseppe D'Angelo
3587a25238 QFlags: support enum classes in setFlag()
Unary ~ is not defined for enum classes, so we need a cast.

Change-Id: I79d495ebcc24ab960da8dae3be08eb307a9de448
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2017-11-24 18:23:34 +00:00
Allan Sandfeld Jensen
b8e352ad37 Add functions for fast bulk conversion of qfloat16
Both ARM and x86 can convert fp16 much faster in bulk than one at a
time. This also enables hardware accelerated conversion on x86, when
F16C isn't unconditionally available at compile time.

This code is implemented in C to ensure that there's no leakage of
inline symbols from the .obj file that was compiled by Visual Studio
with AVX support. Unfortunately, simd.prf uses $(CXX) instead of $(CC)
for all its sources, which means the file gets interpreted as C++ by
g++, clang++ and icpc. Those compilers at least don't leak any symbols.

Done-with: Thiago Macieira <thiago.macieira@intel.com>
Change-Id: I9d26d99e83392861fb09564e0e8e8d76cd8483b3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2017-11-21 20:01:23 +00:00
Thiago Macieira
0ac2dca977 Add support for C11 static_assert and thread_local
Tested with Clang, GCC 4.5 & up, ICC 17 and MSVC 2017. No current
version of MSVC supports C11 and GCC implemented the features slightly
later in C than in C++.

Change-Id: I57a1bd6e0c194530b732fffd14f45c5074c9a052
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
2017-11-21 20:01:18 +00:00
Thiago Macieira
08bf28de03 QRandomGenerator: add more of the std Random Engine API
This brings us to almost parity with the C++11 Random Engine API
requirements (see chapter 26.5.1.4 [rand.req.eng]). We don't implement
the templated Sseq requirements because it would require moving the
implementation details to the public API. And we don't implement the
<iostreams> code because we don't want to.

Change-Id: Icaa86fc7b54d4b368c0efffd14f05ff813ebd759
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2017-11-11 08:11:07 +00:00
Thiago Macieira
cfad4e298f QRandomGenerator: add securelySeeded(), to ensure appropriate seeding
Since we don't document how many bytes one needs (it's 2496), it's
difficult for the caller to provide just enough data in the seed
sequence. Moreover, since std::mt19937 doesn't make it easy to provide
the ideal size either, we can't actually write code that operates
optimally given a quint32 range either -- we only provide it via
std::seed_seq, which is inefficient.

However, we can do it internally by passing QRandomGenerator to the
std::mersenne_twister_engine constructor, as it's designed to work.

Change-Id: Icaa86fc7b54d4b368c0efffd14f0613c10998321
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2017-11-11 08:11:03 +00:00
Thiago Macieira
af456842e1 Change QRandomGenerator to have a deterministic mode
Now only QRandomGenerator::system() will access the system-wide RNG,
which we document to be cryptographically-safe and possibly backed by a
true HWRNG. Everything else just wraps a Mersenne Twister.

Change-Id: I0a103569c81b4711a649fffd14ec8cd3469425df
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2017-11-11 08:11:00 +00:00