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* Tests: remove #define COMMAThiago Macieira2022-08-091-6/+7
| | | | | | | | | | Those were workarounds to passing a comma to a macro, but there are ways around it. The simplest is to just use variadic macros; another, which has been applied to Q_DECLARE_METATYPE for a long time, is to define an alias to the thing you're trying to use. Change-Id: Ie4bb662dcb274440ab8bfffd17097fbf0c53eabc Reviewed-by: Marc Mutz <marc.mutz@qt.io>
* Add license headers to cmake filesLucie Gérard2022-08-031-0/+3
| | | | | | | | | | | | CMakeLists.txt and .cmake files of significant size (more than 2 lines according to our check in tst_license.pl) now have the copyright and license header. Existing copyright statements remain intact Task-number: QTBUG-88621 Change-Id: I3b98cdc55ead806ec81ce09af9271f9b95af97fa Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
* CMake: Don't use PUBLIC_LIBRARIES for tests and test helpersAlexandru Croitor2022-07-281-1/+1
| | | | | Change-Id: I9b7404e1d3a78fe0726ec0f5ce1461f6c209e90d Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
* Use SPDX license identifiersLucie Gérard2022-05-161-27/+2
| | | | | | | | | | | | | Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
* Fix various -Wdeprecated-enum-float-conversions around the codeMarc Mutz2021-07-271-10/+8
| | | | | | | | | | | In two cases, it was as easy as replacing an unnamed enum's values with constexpr variables. In the case of QSimplex, I opted for qToUnderlying(), as the enum made sense on its own. Change-Id: Ifcf5be14bd2f35e50adabdbd7ecdb2e83f6bf5b4 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* Fix warnings from ignored [[nodiscard]] returnsVolker Hilsheimer2021-04-281-8/+8
| | | | | Change-Id: I1c7506c81f0d4d43a875c64120e93660de619610 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Remove the qmake project filesJoerg Bornemann2021-01-071-4/+0
| | | | | | | | | | | | | | | | Remove the qmake project files for most of Qt. Leave the qmake project files for examples, because we still test those in the CI to ensure qmake does not regress. Also leave the qmake project files for utils and other minor parts that lack CMake project files. Task-number: QTBUG-88742 Change-Id: I6cdf059e6204816f617f9624f3ea9822703f73cc Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Kai Koehne <kai.koehne@qt.io>
* Replace QtTest headers with QTestDavid Skoland2020-12-221-1/+1
| | | | | | | | | | | Complete search and replace of QtTest and QtTest/QtTest with QTest, as QtTest includes the whole module. Replace all such instances with correct header includes. See Jira task for more discussion. Fixes: QTBUG-88831 Change-Id: I981cfae18a1cabcabcabee376016b086d9d01f44 Pick-to: 6.0 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
* QRandomGenerator: add 64-bit bounded() versionsThiago Macieira2020-10-201-6/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike the 32-bit version, we can't go to a bigger integer type to do the multiplication with. So instead accept looping. Both libstdc++ and libc++ implement std::uniform_int_distribution this way anyway, but in a far more complex way. There is no looping if the "highest" is a power of two. The worst-case scenario is when "highest" is one past a power of two (like 65). In that case, we'll loop until the number is in range. Since all bits have equal probability of being zero or one, there's a 50-50 chance that the most significant useful bit will be set[*], in which case we'll need to loop and we again get the same probability. So on average, we only need two iterations to get an acceptable result. [*] There's also a possibility that the other bits are such that the number is still in range. For 65, we'd need the other 5 bits to be zero (64 is a valid result), but the probability of that is only 1/2^5 = 3.125%. The bigger "highest" is, the closer we get to zero, so approximate by saying that never happens and instead calculate that the most significant useful bit is the controlling one. [ChangeLog][QtCore][QRandomGenerator] Added 64-bit versions of the bounded() functions. They are useful in conjunction with Qt 6's 64-bit container sizes, so code that used to call bounded(list.size()) in Qt 5 will continue to compile and work in Qt 6. Fixes: QTBUG-86318 Change-Id: I3eb349b832c14610895efffd16356927fe78fd02 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* CMake: Regenerate projects to use new qt_internal_ APIAlexandru Croitor2020-09-231-1/+1
| | | | | | | | | | | Modify special case locations to use the new API as well. Clean up some stale .prev files that are not needed anymore. Clean up some project files that are not used anymore. Task-number: QTBUG-86815 Change-Id: I9947da921f98686023c6bb053dfcc101851276b5 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io> Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
* Fix compiler warning about implict cast to doubleLars Knoll2020-08-161-1/+1
| | | | | | Change-Id: I80497efedebed9579882d31d3eda13bd88c80c94 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
* Disable warning about self-move and self-assign-overloadTor Arne Vestbø2020-07-261-0/+4
| | | | | Change-Id: I1d20d3f424eced5cc5787934663b9d243f75d46e Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* CMake: Regenerate tests with new qt_ prefixed APIsAlexandru Croitor2020-07-091-1/+1
| | | | | | | | Use pro2cmake with '--api-version 2' to force regenerate projects to use the new prefixed qt_foo APIs. Change-Id: I055c4837860319e93aaa6b09d646dda4fc2a4069 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
* Use QList instead of QVector in corelib testsJarek Kobus2020-07-071-2/+2
| | | | | | Task-number: QTBUG-84469 Change-Id: Ic80fde5517aed363f17d0da55cadcc958c3c8895 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
* Port Q_STATIC_ASSERT(_X) to static_assertGiuseppe D'Angelo2020-06-191-4/+4
| | | | | | | | | | | | | | | | | There is no reason for keep using our macro now that we have C++17. The macro itself is left in for the moment being, as well as its detection logic, because it's needed for C code (not everything supports C11 yet). A few more cleanups will arrive in the next few patches. Note that this is a mere search/replace; some places were using double braces to work around the presence of commas in a macro, no attempt has been done to fix those. tst_qglobal had just some minor changes to keep testing the macro. Change-Id: I1c1c397d9f3e63db3338842bf350c9069ea57639 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* Merge remote-tracking branch 'origin/5.15' into devQt Forward Merge Bot2020-04-081-3/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: examples/opengl/doc/src/cube.qdoc src/corelib/global/qlibraryinfo.cpp src/corelib/text/qbytearray_p.h src/corelib/text/qlocale_data_p.h src/corelib/time/qhijricalendar_data_p.h src/corelib/time/qjalalicalendar_data_p.h src/corelib/time/qromancalendar_data_p.h src/network/ssl/qsslcertificate.h src/widgets/doc/src/graphicsview.qdoc src/widgets/widgets/qcombobox.cpp src/widgets/widgets/qcombobox.h tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp tests/benchmarks/corelib/io/qdiriterator/qdiriterator.pro tests/manual/diaglib/debugproxystyle.cpp tests/manual/diaglib/qwidgetdump.cpp tests/manual/diaglib/qwindowdump.cpp tests/manual/diaglib/textdump.cpp util/locale_database/cldr2qlocalexml.py util/locale_database/qlocalexml.py util/locale_database/qlocalexml2cpp.py Resolution of util/locale_database/ are based on: https://codereview.qt-project.org/c/qt/qtbase/+/294250 and src/corelib/{text,time}/*_data_p.h were then regenerated by running those scripts. Updated CMakeLists.txt in each of tests/auto/corelib/serialization/qcborstreamreader/ tests/auto/corelib/serialization/qcborvalue/ tests/auto/gui/kernel/ and generated new ones in each of tests/auto/gui/kernel/qaddpostroutine/ tests/auto/gui/kernel/qhighdpiscaling/ tests/libfuzzer/corelib/text/qregularexpression/optimize/ tests/libfuzzer/gui/painting/qcolorspace/fromiccprofile/ tests/libfuzzer/gui/text/qtextdocument/sethtml/ tests/libfuzzer/gui/text/qtextdocument/setmarkdown/ tests/libfuzzer/gui/text/qtextlayout/beginlayout/ by running util/cmake/pro2cmake.py on their changed .pro files. Changed target name in tests/auto/gui/kernel/qaction/qaction.pro tests/auto/gui/kernel/qaction/qactiongroup.pro tests/auto/gui/kernel/qshortcut/qshortcut.pro to ensure unique target names for CMake Changed tst_QComboBox::currentIndex to not test the currentIndexChanged(QString), as that one does not exist in Qt 6 anymore. Change-Id: I9a85705484855ae1dc874a81f49d27a50b0dcff7
| * Make tst_QRandomGenerator::qualityReal() test more stableSona Kurazyan2020-03-251-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Increasing the sample size of randomly generated test samples reduces the probability of small deviations from the expected uniform distribution. On my machine with the new values the test fails approximately once per 3000 consecutive runs, instead of failing once per 300. Change-Id: I4d1815504c353290a2fb350b3fd1cbb802f8d559 Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Remove QLinkedListSona Kurazyan2020-02-191-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | QLinkedList has been moved to Qt5Compat. Remove and stop mentioning it in docs, examples (the docs & examples for QLinkedList itself will be moved to Qt5Compat) and remove the corresponding tests. Also remove QT_NO_LINKED_LIST, since it's not needed anymore. Task-number: QTBUG-81630 Task-number: QTBUG-80312 Change-Id: I4a8f1105cb60aa87e7fd67e901ec1a27c489aa31 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* | Regenerate projects one last time before mergewip/cmakeAlexandru Croitor2020-02-121-1/+1
| | | | | | | | | | | | Change-Id: Ia24cf56b79ca6dacd370a7e397024e9b663e0167 Reviewed-by: Liang Qi <liang.qi@qt.io> Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
* | Regenerate tests/auto/corelib/globalAlexandru Croitor2019-11-121-1/+12
| | | | | | | | | | | | | | Change-Id: I89a82f0cafeda2f38217a24f1c495344910fba1a Reviewed-by: Leander Beernaert <leander.beernaert@qt.io> Reviewed-by: Simon Hausmann <simon.hausmann@qt.io> Reviewed-by: Qt CMake Build Bot
* | Merge remote-tracking branch 'origin/dev' into wip/cmakeAlexandru Croitor2019-10-141-3/+3
|\| | | | | | | Change-Id: I4a78428a8ea273b6960792e3b8043f816fa37fcf
| * Merge remote-tracking branch 'origin/5.13' into 5.14Liang Qi2019-09-301-3/+3
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: src/corelib/global/qrandom.cpp src/corelib/io/qfileinfo.cpp src/corelib/kernel/qeventdispatcher_win.cpp src/corelib/kernel/qeventdispatcher_win_p.h src/gui/text/qfontdatabase.cpp src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm src/plugins/platforms/windows/qwindowsglcontext.cpp src/testlib/qtestcase.cpp Done-With: Tor Arne Vestbø <tor.arne.vestbo@qt.io> Done-With: Edward Welbourne <edward.welbourne@qt.io> Change-Id: I4893212471aa24be804c989a581810e2f714545c
| | * Fix QRandomGenerator initialization on AMD CPUsDmitry Kazakov2019-09-261-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some AMD CPUs (e.g. AMD A4-6250J and AMD Ryzen 3000-series) have a failing random generation instruction, which always returns 0xffffffff, even when generation was "successful". This code checks if hardware random generator generates four consecutive equal numbers. If it does, then we probably have a failing one and should disable it completely. Change-Id: I38c87920ca2e8cce4143afbff5e453ce3845d11a Fixes: QTBUG-69423 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* | | Merge remote-tracking branch 'origin/wip/qt6' into wip/cmakeAlexandru Croitor2019-07-111-1/+1
|\| | | | | | | | | | | Change-Id: I715b1d743d5f11560e7b3fbeb8fd64a5e5ddb277
| * | Port from QAtomic::load() to loadRelaxed()Giuseppe D'Angelo2019-06-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Semi-automated, just needed ~20 manual fixes: $ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)load\(\)/$1loadRelaxed\(\)/g' -i \{\} + $ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)store\(/$1storeRelaxed\(/g' -i \{\} + It can be easily improved (e.g. for store check that there are no commas after the opening parens). The most common offender is QLibrary::load, and some code using std::atomic directly. Change-Id: I07c38a3c8ed32c924ef4999e85c7e45cf48f0f6c Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
* | | Merge remote-tracking branch 'origin/dev' into wip/cmakeAlexandru Croitor2019-06-031-1/+1
|\| | | | | | | | | | | | | | | | | Take 5. Change-Id: Ifb2d20e95ba824e45e667fba6c2ba45389991cc3
| * | tst_qrandomgenerator: replace QLinkedList with a std::listMarc Mutz2019-05-141-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | 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>
* / Begin port of qtbase to CMakeSimon Hausmann2018-11-011-0/+1
|/ | | | | | | | | | | | | | | Done-by: Alexandru Croitor <alexandru.croitor@qt.io> Done-by: Frederik Gladhorn <frederik.gladhorn@qt.io> Done-by: Kevin Funk <kevin.funk@kdab.com> Done-by: Mikhail Svetkin <mikhail.svetkin@qt.io> Done-by: Simon Hausmann <simon.hausmann@qt.io> Done-by: Tobias Hunger <tobias.hunger@qt.io> Done-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io> Done-by: Volker Krause <volker.krause@kdab.com> Change-Id: Ida4f8bd190f9a4849a1af7b5b7981337a5df5310 Reviewed-by: Simon Hausmann <simon.hausmann@qt.io> Reviewed-by: Tobias Hunger <tobias.hunger@qt.io> Reviewed-by: Mikhail Svetkin <mikhail.svetkin@qt.io>
* QRandomGenerator: remove unnecessary cast to float in RandomValueFPThiago Macieira2018-07-291-1/+1
| | | | | | | I don't know why I did that. Change-Id: I20fd00e600264ff98c6afffd15410722b6d95a61 Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
* Tests: Raise minimum supported MSVC version to 2015Friedemann Kleint2018-01-041-5/+0
| | | | | | | | Remove code for older versions and streamline #ifdefs. Task-number: QTBUG-51673 Change-Id: If456567691538b1a1f452111814c5f9eba401c43 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* QRandomGenerator: add more of the std Random Engine APIThiago Macieira2017-11-111-0/+41
| | | | | | | | | | | 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>
* QRandomGenerator: add securelySeeded(), to ensure appropriate seedingThiago Macieira2017-11-111-0/+19
| | | | | | | | | | | | | | | 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>
* Change QRandomGenerator to have a deterministic modeThiago Macieira2017-11-111-81/+253
| | | | | | | | | 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>
* QRandomGenerator: remove the per-thread bufferThiago Macieira2017-11-111-1/+0
| | | | | | | | | | | Since we're adding a deterministic generator that inherently does not use syscalls, and people should really use that one by default, there is no point in optimizing the secure generator wrt syscalls. Besides, keeping the random data in memory for longer than needed is likely inadviseable. Change-Id: Ib17dde1a1dbb49a7bba8fffd14ed0871117fe930 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* QRandomGenerator: add system() and global()Thiago Macieira2017-10-291-5/+3
| | | | | | | | | | | | | | | | | Right now,this does really nothing. This commit is just to allow us to transition the other modules (besides qtbase) to use the syntax that will become the API. I've marked three places to use the system CSPRNG: 1) the QHash seed 2) QUuid 3) QAuthenticator I didn't think the HTTP multipart boundary needed to be cryptographically safe, so I changed that one to the global generator. Change-Id: Ib17dde1a1dbb49a7bba8fffd14ecf1938bd8ff61 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* QRandomGenerator: improve floating-point random generationThiago Macieira2017-10-201-1/+49
| | | | | | | | | | | | | | | | | | | | | | | | | The previous version was good, just not optimal. Because the input was an unsigned 64-bit number, compilers needed to generate extra code to deal with HW instructions that only convert 64-bit signed input. And that was useless because a double uniformly distributed from 0 to 1 can only have 53 bits of randomness. The previous implementation did exactly what the Microsoft libstdc++ and libc++ implementations do. In my opinion, those implementations have an imperfect distribution, which is corrected in this commit. In those, all random input bigger than 0x20000000000000 has a different frequency compared to input below that mark. For example, both 0x20000000000000 and 0x20000000000001 produce the same result (4.8828125e-4). What's more, for the libc++ and MSVC implementations, input between 0xfffffffffffff001 and 0xffffffffffffffff results in 1.0 (probability 1 in 2⁵³), even though the Standard is very clear that the result should be strictly less than 1. GCC 7's libstdc++ doesn't have this issue, whereas the versions before would enter an infinite loop. Change-Id: Ib17dde1a1dbb49a7bba8fffd14eced3c375dd2ec Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* configure: make C++11 <random> a required functionalityThiago Macieira2017-10-161-23/+3
| | | | | | | | | Error out if it's missing or broken (Mersenne Twister not present). This ensures that we never have a low-quality random generator in Qt. Change-Id: I0a103569c81b4711a649fffd14ec80649df7087e Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* QRandomGenerator: update API to better nameThiago Macieira2017-09-221-28/+28
| | | | | | | | | | | | "generate" is better than "get", and we already have "generate(it, it)" which uses std::generate(). This changes: - get32() → generate() - get64() → generate64() and QRandomGenerator64::generate() - getReal() → generateDouble() Change-Id: I6e1fe42ae4b742a7b811fffd14e5d7bd69abcdb3 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* Fix use of getentropy on larger blocksThiago Macieira2017-07-271-1/+1
| | | | | | | | | | | Found while working on suppressing the warning about the return value (which is either 0 or -1) was being ignored. Task-number: QTBUG-61968 Change-Id: I02d22222fff64d4dbda4fffd14d148b1724547ca Reviewed-by: Florian Bruhin <qt-project.org@the-compiler.org> Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* QRandomGenerator: use getentropy on Linux & OpenBSDThiago Macieira2017-06-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | The getentropy function, first found in OpenBSD, is present in glibc since version 2.25 and Bionic since Android 6.0 and NDK r11. It uses the Linux 3.17 getrandom system call. Unlike glibc's getrandom() wrapper, the glibc implementation of getentropy() function is not a POSIX thread cancellation point, so we prefer to use that even though we have to break the reading into 256-byte blocks. The big advantage is that these functions work even in the absence of a /dev/urandom device node, in addition to a few cycles shaved off by not having to open a file descriptor and close it at exit. What's more, the glibc implementation blocks until entropy is available on early boot, so we don't have to worry about a failure mode. The Bionic implementation will fall back by itself to /dev/urandom and, failing that, gathering entropy from elsewhere in the system in a way it cannot fail either. uClibc has a wrapper to getrandom(2) but no getentropy(3). MUSL has neither. Change-Id: Ia53158e207a94bf49489fffd14c8cee1b968a619 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* QRandomGenerator: don't internally rely on QT_HAS_INCLUDEThiago Macieira2017-06-201-7/+10
| | | | | | | | | | | | | | GCC didn't support it until version 5 or 6, so add configure tests for both <random> and <sys/auxv.h>. Normally I'd say "upgrade", but this is too low-level and important a feature. There's a good chance that all our supported compilers have <random> anyway. As for <sys/auxv.h>, it's present on Glibc, Bionic and MUSL, but I don't see it in uClibc (AT_RANDOM is a Linux-specific feature). Change-Id: Ia3e896da908f42939148fffd14c5b2af491f7a77 Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* Long live QRandomGeneratorThiago Macieira2017-06-122-0/+704
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>
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