failing initialization of KStandardAction/KConfigWatcher on macos

[Alexander Semke]

On Freitag, 22. September 2023 18:38:31 CEST Alexander Semke wrote:
> Hi,
>
> we've got a problem reported from a user using labplot on macos. The start
> of labplot fails, the application is hanging and the sample of the running
> process points to the following call stack:
>
> Heaviest stack for the main thread of the target process:
>   11  start + 1903 (dyld + 25631) [0x7ff8021a641f]
>   11  ??? (labplot2 + 89750) [0x10e717e96]
>   11  ??? (labplot2 + 501311) [0x10e77c63f]
>   11  ??? (labplot2 + 494708) [0x10e77ac74]
>   11  ??? (labplot2 + 505861) [0x10e77d805]
>   11  KStandardAction::_k_createInternal(KStandardAction::StandardAction,
> QObject*) + 2997 (libKF5ConfigWidgets.5.dylib + 182085) [0x1113df745]
>   11  KStandardShortcut::shortcutWatcher() + 63 (libKF5ConfigGui.5.dylib +
> 76383) [0x10ff97a5f]
>   11  ??? (libKF5ConfigGui.5.dylib + 75750) [0x10ff977e6]
>   11  KConfigWatcher::create(QExplicitlySharedDataPointer<KSharedConfig>
> const&) + 272 (libKF5ConfigCore.5.dylib + 249968) [0x1114b1070]
>   11  ??? (libKF5ConfigCore.5.dylib + 252061) [0x1114b189d]
>   11  QDBusConnection::sessionBus() + 44 (QtDBus + 21452) [0x1116e73cc]
>   11  ??? (QtDBus + 8736) [0x1116e4220]
>   11  ??? (QtDBus + 8902) [0x1116e42c6]
>   11  ??? (QtCore + 2211491) [0x112b5cea3]
>   11  QSemaphore::acquire(int) + 110 (QtCore + 171262) [0x11296acfe]
>   11  QWaitCondition::wait(QMutex*, QDeadlineTimer) + 83 (QtCore + 186499)
> [0x11296e883]
>   11  ??? (QtCore + 186603) [0x11296e8eb]
>   11  __psynch_cvwait + 10 (libsystem_kernel.dylib + 16638) [0x7ff8024c40fe]
> *11  psynch_cvcontinue + 0 (com.apple.kec.pthread + 20884)
> [0xffffff8003782194]
>
>
> This problem is not reproducible on my MacBook nor was it ever reported
> earlier by any other macos users.
>
> Does somebody has an idea for what can go wrong during the DBus
> initialization in KConfigWatcher::create()?

The problem was "somehow" solved after reinstalling macos on user's macbook...
So, we're good here now and not looking anymore into this weird problem.

--
Alexander