[dolphin] [Bug 472572] New: Fails to build with KF6 as of recently

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=472572

            Bug ID: 472572
           Summary: Fails to build with KF6 as of recently
    Classification: Applications
           Product: dolphin
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Keywords: qt6, regression
          Severity: grave
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: nate at kde.org
                CC: kfm-devel at kde.org
  Target Milestone: ---

[ 59%] Building CXX object
src/CMakeFiles/dolphinstatic.dir/statusbar/mountpointobserver.cpp.o
In file included from /usr/include/qt6/QtCore/QObject:1,
                 from /home/nate/kde/usr6/include/KF6/KCoreAddons/kjob.h:14,
                 from
/home/nate/kde/usr6/include/KF6/KCoreAddons/kcompositejob.h:13,
                 from
/home/nate/kde/usr6/include/KF6/KCoreAddons/KCompositeJob:1,
                 from
/home/nate/kde/usr6/include/KF6/KIOCore/kio/job_base.h:12,
                 from
/home/nate/kde/usr6/include/KF6/KIOCore/kio/filecopyjob.h:12,
                 from
/home/nate/kde/usr6/include/KF6/KIOCore/kio/jobclasses.h:13,
                 from /home/nate/kde/usr6/include/KF6/KIOCore/kio/job.h:47,
                 from /home/nate/kde/usr6/include/KF6/KIOCore/KIO/Job:1,
                 from
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.h:10,
                 from
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.cpp:7:
/usr/include/qt6/QtCore/qobject.h: In instantiation of ‘static
QMetaObject::Connection QObject::connect(const typename
QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename
QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType) [with
Func1 = void (KJob::*)(KJob*, KJob::QPrivateSignal); Func2 = void
(MountPointObserver::*)(KIO::Job*, long long unsigned int, long long unsigned
int); typename QtPrivate::FunctionPointer<Func>::Object = KJob; typename
QtPrivate::FunctionPointer<Func2>::Object = MountPointObserver]’:
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.cpp:32:16:  
required from here
/usr/include/qt6/QtCore/qobject.h:212:54: error: static assertion failed: The
slot requires more arguments than the signal provides.
  212 |         static_assert(int(SignalType::ArgumentCount) >=
int(SlotType::ArgumentCount),
      |                      
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/qt6/QtCore/qobject.h:212:54: note: the comparison reduces to ‘(2
>= 3)’
In file included from /usr/include/qt6/QtCore/qobjectdefs.h:13,
                 from /usr/include/qt6/QtCore/qurl.h:9,
                 from /usr/include/qt6/QtCore/QUrl:1,
                 from /home/nate/kde/usr6/include/KF6/KIOCore/kio/job.h:14:
/usr/include/qt6/QtCore/qobjectdefs_impl.h: In instantiation of ‘struct
QtPrivate::AreArgumentsCompatible<KJob*, KIO::Job*>’:
/usr/include/qt6/QtCore/qobjectdefs_impl.h:300:122:   required from ‘struct
QtPrivate::CheckCompatibleArguments<QtPrivate::List<KJob*,
KJob::QPrivateSignal>, QtPrivate::List<KIO::Job*, long long unsigned int, long
long unsigned int> >’
/usr/include/qt6/QtCore/qobject.h:214:123:   required from ‘static
QMetaObject::Connection QObject::connect(const typename
QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename
QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType) [with
Func1 = void (KJob::*)(KJob*, KJob::QPrivateSignal); Func2 = void
(MountPointObserver::*)(KIO::Job*, long long unsigned int, long long unsigned
int); typename QtPrivate::FunctionPointer<Func>::Object = KJob; typename
QtPrivate::FunctionPointer<Func2>::Object = MountPointObserver]’
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.cpp:32:16:  
required from here
/usr/include/qt6/QtCore/qobjectdefs_impl.h:284:64: error: static assertion
failed: Signal and slot arguments are not compatible (narrowing)
  284 |         static_assert(AreArgumentsConvertibleWithoutNarrowing::value,
"Signal and slot arguments are not compatible (narrowing)");
      |                                                                ^~~~~
/usr/include/qt6/QtCore/qobjectdefs_impl.h:284:64: note:
‘std::integral_constant<bool, false>::value’ evaluates to false
/usr/include/qt6/QtCore/qobjectdefs_impl.h: In instantiation of ‘struct
QtPrivate::AreArgumentsCompatible<KJob::QPrivateSignal, long long unsigned
int>’:
/usr/include/qt6/QtCore/qobjectdefs_impl.h:300:122:   required from ‘struct
QtPrivate::CheckCompatibleArguments<QtPrivate::List<KJob::QPrivateSignal>,
QtPrivate::List<long long unsigned int, long long unsigned int> >’
/usr/include/qt6/QtCore/qobjectdefs_impl.h:301:82:   required from ‘struct
QtPrivate::CheckCompatibleArguments<QtPrivate::List<KJob*,
KJob::QPrivateSignal>, QtPrivate::List<KIO::Job*, long long unsigned int, long
long unsigned int> >’
/usr/include/qt6/QtCore/qobject.h:214:123:   required from ‘static
QMetaObject::Connection QObject::connect(const typename
QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename
QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType) [with
Func1 = void (KJob::*)(KJob*, KJob::QPrivateSignal); Func2 = void
(MountPointObserver::*)(KIO::Job*, long long unsigned int, long long unsigned
int); typename QtPrivate::FunctionPointer<Func>::Object = KJob; typename
QtPrivate::FunctionPointer<Func2>::Object = MountPointObserver]’
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.cpp:32:16:  
required from here
/usr/include/qt6/QtCore/qobjectdefs_impl.h:284:64: error: static assertion
failed: Signal and slot arguments are not compatible (narrowing)
/usr/include/qt6/QtCore/qobjectdefs_impl.h:284:64: note:
‘std::integral_constant<bool, false>::value’ evaluates to false
/usr/include/qt6/QtCore/qobject.h: In instantiation of ‘static
QMetaObject::Connection QObject::connect(const typename
QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename
QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType) [with
Func1 = void (KJob::*)(KJob*, KJob::QPrivateSignal); Func2 = void
(MountPointObserver::*)(KIO::Job*, long long unsigned int, long long unsigned
int); typename QtPrivate::FunctionPointer<Func>::Object = KJob; typename
QtPrivate::FunctionPointer<Func2>::Object = MountPointObserver]’:
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.cpp:32:16:  
required from here
/usr/include/qt6/QtCore/qobject.h:214:123: error: static assertion failed:
Signal and slot arguments are not compatible.
  214 |         static_assert((QtPrivate::CheckCompatibleArguments<typename
SignalType::Arguments, typename SlotType::Arguments>::value),
      |                      
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
/usr/include/qt6/QtCore/qobject.h:214:123: note:
‘QtPrivate::CheckCompatibleArguments<QtPrivate::List<KJob*,
KJob::QPrivateSignal>, QtPrivate::List<KIO::Job*, long long unsigned int, long
long unsigned int> >::value’ evaluates to false
/usr/include/qt6/QtCore/qobjectdefs_impl.h: In instantiation of ‘struct
QtPrivate::List_Left<QtPrivate::List<>, 1>’:
/usr/include/qt6/QtCore/qobjectdefs_impl.h:37:118:   recursively required from
‘struct QtPrivate::List_Left<QtPrivate::List<KJob::QPrivateSignal>, 2>’
/usr/include/qt6/QtCore/qobjectdefs_impl.h:37:118:   required from ‘struct
QtPrivate::List_Left<QtPrivate::List<KJob*, KJob::QPrivateSignal>, 3>’
/usr/include/qt6/QtCore/qobject.h:225:28:   required from ‘static
QMetaObject::Connection QObject::connect(const typename
QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename
QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType) [with
Func1 = void (KJob::*)(KJob*, KJob::QPrivateSignal); Func2 = void
(MountPointObserver::*)(KIO::Job*, long long unsigned int, long long unsigned
int); typename QtPrivate::FunctionPointer<Func>::Object = KJob; typename
QtPrivate::FunctionPointer<Func2>::Object = MountPointObserver]’
/home/nate/kde/src/dolphin/src/statusbar/mountpointobserver.cpp:32:16:  
required from here
/usr/include/qt6/QtCore/qobjectdefs_impl.h:37:118: error: no type named ‘Car’
in ‘struct QtPrivate::List<>’
   37 |         typedef typename List_Append<List<typename L::Car>,typename
List_Left<typename L::Cdr, N - 1>::Value>::Value Value;
      |                                                                        
                                             ^~~~~
gmake[2]: *** [src/CMakeFiles/dolphinstatic.dir/build.make:927:
src/CMakeFiles/dolphinstatic.dir/statusbar/mountpointobserver.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:796: src/CMakeFiles/dolphinstatic.dir/all]
Error 2
gmake: *** [Makefile:136: all] Error 2

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