Bug#994969: jackd2: segfaults after today's upgrade of other Debian testing packages

[Simon McVittie]

On Sat, 02 Oct 2021 at 20:48:55 +1000, ‍小太 wrote:
> What I can add is from reading the documentation of g_quark_from_static_string()
> (https://docs.gtk.org/glib/func.quark_from_static_string.html)
> is these particular lines seem to be of importance:
> 
> > It can be used with statically allocated strings in the main program,
> > but not with statically allocated memory in dynamically loaded
> > modules, if you expect to ever unload the module again
> 
> However, jackd will load jack_firewire.so three times (which means
> loading and unloading its glibmm dependency three times)

Perhaps jack_firewire.so and/or glibmm should be linked with -Wl,-z,nodelete
to prevent it from being removed from the address space even after
dlclose()? That would ensure that its static strings remain in memory.

    smcv