fix: Qt6.9 QString stricter .arg matching

[Swiftb0y]

(Hopefully) fixes #14071

[Swiftb0y]

waiting for @jospezial to confirm whether this fixes their issue.

[jospezial]

It fixes the compile of that part of the code. Thank you. But there is another one:

FAILED: CMakeFiles/mixxx-lib.dir/src/recording/recordingmanager.cpp.o 
/usr/lib/ccache/bin/x86_64-pc-linux-gnu-g++ -DMIXXX_BUILD_RELEASE -DMIXXX_USE_QOPENGL -DPA_USE_ALSA -DPROTOBUF_USE_DLLS -DQT_CONCURRENT_LIB -DQT_CORE5COMPAT_LIB -DQT_CORE_LIB -DQT_DBUS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_PRINTSUPPORT_LIB -DQT_QMLINTEGRATION_LIB -DQT_QML_LIB -DQT_SHADERTOOLS_LIB -DQT_SQL_LIB -DQT_SVGWIDGETS_LIB -DQT_SVG_LIB -DQT_TABLET_SUPPORT -DQT_TESTCASE_BUILDDIR=\"/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999_build\" -DQT_TESTCASE_SOURCEDIR=\"/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999\" -DQT_TESTLIB_LIB -DQT_USE_QSTRINGBUILDER -DQT_WIDGETS_LIB -DQT_XML_LIB -DSFC_SUPPORTS_SET_COMPRESSION_LEVEL -D__BATTERY__ -D__BULK__ -D__FAAD__ -D__FFMPEG__ -D__HID__ -D__KEYFINDER__ -D__LILV__ -D__LINUX__ -D__MAD__ -D__MODPLUG__ -D__MP4V2__ -D__OPUS__ -D__PORTMIDI__ -D__QTKEYCHAIN__ -D__RUBBERBAND__ -D__SNDFILE__ -D__SQLITE3__ -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STEM__ -D__UNIX__ -D__VINYLCONTROL__ -D__WV__ -Dx86_64 -I/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999_build/mixxx-lib_autogen/include -I/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src -I/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999_build/src -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/fidlib -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/portaudio -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/rigtorp/SPSCQueue/include -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/replaygain -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/reverb -isystem /usr/include/glib-2.0 -isystem /usr/lib64/glib-2.0/include -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/rekordbox-metadata -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/kaitai -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/mp3guessenc-0.27.4 -isystem /usr/include/qt6/QtConcurrent -isystem /usr/include/qt6 -isystem /usr/include/qt6/QtCore -isystem /usr/lib64/qt6/mkspecs/linux-g++ -isystem /usr/include/qt6/QtGui -isystem /usr/include/qt6/QtNetwork -isystem /usr/include/qt6/QtOpenGL -isystem /usr/include/qt6/QtPrintSupport -isystem /usr/include/qt6/QtWidgets -isystem /usr/include/qt6/QtQml -isystem /usr/include/qt6/QtQmlIntegration -isystem /usr/include/qt6/QtSql -isystem /usr/include/qt6/QtSvg -isystem /usr/include/qt6/QtTest -isystem /usr/include/qt6/QtXml -isystem /usr/include/qt6/QtShaderTools -isystem /usr/include/qt6/QtSvgWidgets -isystem /usr/include/qt6/QtCore5Compat -isystem /usr/include/qt6/QtDBus -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/qm-dsp -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/qm-dsp/include -isystem /usr/include/taglib -isystem /usr/include/libupower-glib -isystem /usr/include/lilv-0 -isystem /usr/include/opus -isystem /usr/include/hidapi -isystem /usr/include/libusb-1.0 -isystem /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/lib/xwax -isystem /usr/include/wavpack  -march=native -O2 -pipe -std=gnu++20 -fvisibility=hidden -fvisibility-inlines-hidden -pipe -Wall -Wextra -Woverloaded-virtual -Wfloat-conversion -Werror=return-type -Wformat=2 -Wformat-security -Wvla -Wundef -fmacro-prefix-map=/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999=. -pthread -fPIC -MD -MT CMakeFiles/mixxx-lib.dir/src/recording/recordingmanager.cpp.o -MF CMakeFiles/mixxx-lib.dir/src/recording/recordingmanager.cpp.o.d -o CMakeFiles/mixxx-lib.dir/src/recording/recordingmanager.cpp.o -c /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src/recording/recordingmanager.cpp
/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src/recording/recordingmanager.cpp: In member function ‘QString RecordingManager::getRecordedDurationStr(unsigned int)’:
/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src/recording/recordingmanager.cpp:213:22: error: no matching function for call to ‘QString::arg(unsigned int, int, char, int, char)’
  212 |     return QString("%1:%2")
      |            ~~~~~~~~~~~~~~~~
  213 |                  .arg(duration / 60, 2, 'f', 0, '0')   // minutes
      |                  ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/qt6/QtCore/qobject.h:11,
                 from /usr/include/qt6/QtCore/QObject:1,
                 from /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src/recording/recordingmanager.h:3,
                 from /var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src/recording/recordingmanager.cpp:1:
/usr/include/qt6/QtCore/qstring.h:316:27: note: candidate: ‘template<class T, typename std::enable_if<conjunction_v<std::disjunction<std::is_convertible<T, long long unsigned int>, std::is_convertible<T, long long int> >, std::negation<std::disjunction<std::is_same<typename std::remove_cvref<_Tp>::type, _Float16>, std::is_same<typename std::remove_cvref<_Tp>::type, qfloat16>, std::is_floating_point<_Tp> > >, std::negation<std::conjunction<std::negation<QtPrivate::treat_as_integral_arg<typename std::remove_cv< <template-parameter-1-1> >::type> >, std::is_convertible<T, QAnyStringView> > > >, bool>::type <anonymous> > QString QString::arg(T, int, int, QChar) const’
  316 |     [[nodiscard]] QString arg(T a, int fieldWidth = 0, int base = 10,
      |                           ^~~
/usr/include/qt6/QtCore/qstring.h:316:27: note:   candidate expects 4 arguments, 5 provided
/usr/include/qt6/QtCore/qstring.h:331:27: note: candidate: ‘template<class T, typename std::enable_if<std::disjunction<std::is_same<typename std::remove_cvref<_Tp>::type, _Float16>, std::is_same<typename std::remove_cvref<_Tp>::type, qfloat16>, std::is_floating_point<_Tp> >::value, bool>::type <anonymous> > QString QString::arg(T, int, char, int, QChar) const’
  331 |     [[nodiscard]] QString arg(T a, int fieldWidth = 0, char format = 'g', int precision = -1,
      |                           ^~~
/usr/include/qt6/QtCore/qstring.h:331:27: note:   template argument deduction/substitution failed:
/usr/include/qt6/QtCore/qstring.h:330:50: error: no type named ‘type’ in ‘struct std::enable_if<false, bool>’
  330 |     template <typename T, if_floating_point<T> = true>
      |                                                  ^~~~
/usr/include/qt6/QtCore/qstring.h:336:27: note: candidate: ‘template<class T, typename std::enable_if<std::conjunction<std::negation<QtPrivate::treat_as_integral_arg<typename std::remove_cv< <template-parameter-1-1> >::type> >, std::is_convertible<T, QAnyStringView> >::value, bool>::type <anonymous> > QString QString::arg(const T&, int, QChar) const’
  336 |     [[nodiscard]] QString arg(const T &a, int fieldWidth = 0, QChar fillChar = u' ') const
      |                           ^~~
/usr/include/qt6/QtCore/qstring.h:336:27: note:   candidate expects 3 arguments, 5 provided
/usr/include/qt6/QtCore/qstring.h:356:5: note: candidate: ‘template<class ... Args> typename std::enable_if<((sizeof... (Args) >= 2) && conjunction_v<std::conjunction<std::negation<QtPrivate::treat_as_integral_arg<typename std::remove_cv<Args>::type> >, std::is_convertible<Args, QAnyStringView> >...>), QString>::type QString::arg(Args&& ...) const’
  356 |     arg(Args &&...args) const
      |     ^~~
/usr/include/qt6/QtCore/qstring.h:356:5: note:   template argument deduction/substitution failed:
/usr/include/qt6/QtCore/qstring.h: In substitution of ‘template<class ... Args> typename std::enable_if<((sizeof... (Args) >= 2) && conjunction_v<std::conjunction<std::negation<QtPrivate::treat_as_integral_arg<typename std::remove_cv<Args>::type> >, std::is_convertible<Args, QAnyStringView> >...>), QString>::type QString::arg(Args&& ...) const [with Args = {unsigned int, int, char, int, char}]’:
/var/tmp/portage/media-sound/mixxx-9999/work/mixxx-9999/src/recording/recordingmanager.cpp:213:22:   required from here
  212 |     return QString("%1:%2")
      |            ~~~~~~~~~~~~~~~~
  213 |                  .arg(duration / 60, 2, 'f', 0, '0')   // minutes
      |                  ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/qt6/QtCore/qstring.h:356:5: error: no type named ‘type’ in ‘struct std::enable_if<false, QString>’
  356 |     arg(Args &&...args) const
      |     ^~~

[jospezial]

14080_mein_qt6_9_recordingmanager.patch.txt
I fixed it the same way. Take my changes if that is good.
Successfully compiled mixxx git main .
Is a "const qulonglong" line there also needed?

[daschuer]

Does this PR compile without the const qulonglong ?

You may consider to do your own Pull Request and become a Mixxx Contributor. You are very welcome.

[daschuer]

Sorry for hitting unintentionally the famous "close with comment" button.

[Swiftb0y]

@jospezial I applied your changes. Could you try compiling again? Thank you.

[jospezial]

Fixes these 2 compile errors. Also no problems for time display seen in mixxx. I tested recording.
Do you want to move it all into one commit? That would look better without the temporary added code..

[ronso0]

Sorry for hitting unintentionally the famous "close with comment" button.

hehe..
FWIW I minimized that button in Firefox with this snippet in .mozilla/firefox/[profile]/chrome/github_tweaks.css

  /* minimize "Close and comment" button */
  .js-comment-and-button {
    max-width: 40px;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

[Swiftb0y]

Fixes these 2 compile errors. Also no problems for time display seen in mixxx. I tested recording. Do you want to move it all into one commit? That would look better without the temporary added code..

Thank you for testing. Yes I will git rebase --autosquash after this gets a LGTM from someone.

[daschuer]

LGTM, thank you.

[Swiftb0y]

squashed the fixups.

[Swiftb0y]

Thank you.