To reproduce, use gcc 14 to build JavaFX on Linux with media compilation enabled. It produces the following error:

../../../gstreamer-lite/gstreamer/gst/gstclock.c: In function 'gst_clock_entry_new':
../../../gstreamer-lite/gstreamer/gst/gstclock.c:178:48: error: passing argument 1 of 'g_weak_ref_init' from incompatible pointer type [-Wincompatible-pointer-types]
  178 | #define GST_CLOCK_ENTRY_CLOCK_WEAK_REF(entry) (&((GstClockEntryImpl *)(entry))->clock)
      | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      | |
      | GWeakRef **
../../../gstreamer-lite/gstreamer/gst/gstclock.c:274:20: note: in expansion of macro 'GST_CLOCK_ENTRY_CLOCK_WEAK_REF'
  274 | g_weak_ref_init (GST_CLOCK_ENTRY_CLOCK_WEAK_REF (entry), clock);
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/glib-2.0/gobject/gbinding.h:29,
                 from /usr/include/glib-2.0/glib-object.h:23,
                 from ../../../gstreamer-lite/gstreamer/gst/gstobject.h:29,
                 from ../../../gstreamer-lite/gstreamer/gst/gstplugin.h:29,
                 from ../../../gstreamer-lite/gstreamer/gst/gstregistry.h:28,
                 from ../../../gstreamer-lite/gstreamer/gst/gst_private.h:45,
                 from ../../../gstreamer-lite/gstreamer/gst/gstclock.c:104:
/usr/include/glib-2.0/gobject/gobject.h:849:43: note: expected 'GWeakRef *' but argument is of type 'GWeakRef **'
  849 | void g_weak_ref_init (GWeakRef *weak_ref,
      | ~~~~~~~~~~^~~~~~~~