(gdb) bt
#0 0x00007f3de5393081 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007f3de537e535 in __GI_abort () at abort.c:79
#2 0x00007f3de5537dc3 in g_assertion_message
(domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x7f3de6033760 <__FUNCTION__.67592> "rhythmdb_property_model_delete_prop", message=<optimized out>) at ../../../glib/gtestutils.c:2912
#3 0x00007f3de5592fcb in g_assertion_message_expr
(domain=domain@entry=0x7f3de6035356 "RhythmDB", file=file@entry=0x7f3de60331bb "rhythmdb-property-model.c", line=line@entry=870, func=func@entry=0x7f3de6033760 <__FUNCTION__.67592> "rhythmdb_property_model_delete_prop", expr=expr@entry=0x7f3de6033458 "(ptr = g_hash_table_lookup (model->priv->reverse_map, propstr))") at ../../../glib/gtestutils.c:2938
#4 0x00007f3de5fee716 in rhythmdb_property_model_delete_prop
(model=model@entry=0x562dce9c6490 [RhythmDBPropertyModel], propstr=0x562dce801690 "Unknown") at rhythmdb-property-model.c:870
#5 0x00007f3de5feee13 in rhythmdb_property_model_prop_changed_cb
(db=<optimized out>, entry=0x562dcd831f10, propid=RHYTHMDB_PROP_GENRE, old=0x562dcf176608, new=0x562dcf176620, propmodel=0x562dce9c6490 [RhythmDBPropertyModel]) at rhythmdb-property-model.c:640
#6 0x00007f3de3f9f8ee in ffi_call_unix64 () at ../src/x86/unix64.S:76
#7 0x00007f3de3f9f2bf in ffi_call
(cif=cif@entry=0x7fff3f308d60, fn=fn@entry=0x7f3de5feec50 <rhythmdb_property_model_prop_changed_cb>, rvalue=<optimized out>, avalue=avalue@entry=0x7fff3f308c70) at ../src/x86/ffi64.c:525
#12 0x00007f3de567081f in <emit signal ??? on instance 0x562dce9adae0 [RhythmDBQueryModel]>
(instance=<optimized out>, signal_id=signal_id@entry=448, detail=detail@entry=0) at ../../../gobject/gsignal.c:3453
#8 0x00007f3de56546dc in g_cclosure_marshal_generic
(closure=closure@entry=0x562dcea53e20, return_gvalue=return_gvalue@entry=0x0, n_param_values=n_param_values@entry=5, param_values=param_values@entry=0x7fff3f308f90, invocation_hint=invocation_hint@entry=0x7fff3f308f10, marshal_data=marshal_data@entry=0x0)
at ../../../gobject/gclosure.c:1500
#9 0x00007f3de5653eb2 in g_closure_invoke
(closure=0x562dcea53e20, return_value=0x0, n_param_values=5, param_values=0x7fff3f308f90, invocation_hint=0x7fff3f308f10)
at ../../../gobject/gclosure.c:810
#10 0x00007f3de56674d4 in signal_emit_unlocked_R
(node=node@entry=0x562dcd902e20, detail=detail@entry=0, instance=instance@entry=0x562dce9adae0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff3f308f90) at ../../../gobject/gsignal.c:3641
#11 0x00007f3de567018f in g_signal_emit_valist
(instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff3f3091a0)
at ../../../gobject/gsignal.c:3397
#13 0x00007f3de5ff2eea in rhythmdb_query_model_entry_changed_cb
(db=0x562dcd87c220 [RhythmDBTree], entry=0x562dcd831f10, changes=0x562dcd7a0e60, model=0x562dce9adae0 [RhythmDBQueryModel])
at rhythmdb-query-model.c:1120
#14 0x00007f3de3f9f8ee in ffi_call_unix64 () at ../src/x86/unix64.S:76
#15 0x00007f3de3f9f2bf in ffi_call
(cif=cif@entry=0x7fff3f3094f0, fn=fn@entry=0x7f3de5ff2c20 <rhythmdb_query_model_entry_changed_cb>, rvalue=<optimized out>, avalue=avalue@entry=0x7fff3f309420) at ../src/x86/ffi64.c:525
#20 0x00007f3de567081f in <emit signal ??? on instance 0x562dcd87c220 [RhythmDBTree]>
(instance=<optimized out>, signal_id=signal_id@entry=231, detail=detail@entry=0) at ../../../gobject/gsignal.c:3453
#16 0x00007f3de56546dc in g_cclosure_marshal_generic
(closure=closure@entry=0x562dcea55160, return_gvalue=return_gvalue@entry=0x0, n_param_values=n_param_values@entry=3, param_values=param_values@entry=0x7fff3f309720, invocation_hint=invocation_hint@entry=0x7fff3f3096a0, marshal_data=marshal_data@entry=0x0)
at ../../../gobject/gclosure.c:1500
#17 0x00007f3de5653eb2 in g_closure_invoke
(closure=0x562dcea55160, return_value=0x0, n_param_values=3, param_values=0x7fff3f309720, invocation_hint=0x7fff3f3096a0)
at ../../../gobject/gclosure.c:810
#18 0x00007f3de56674d4 in signal_emit_unlocked_R
(node=node@entry=0x562dcd6d3c20, detail=detail@entry=0, instance=instance@entry=0x562dcd87c220, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff3f309720) at ../../../gobject/gsignal.c:3641
#19 0x00007f3de567018f in g_signal_emit_valist
(instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff3f309900)
at ../../../gobject/gsignal.c:3397
#21 0x00007f3de5fe37f7 in rhythmdb_emit_entry_signals_idle (db=0x562dcd87c220 [RhythmDBTree]) at rhythmdb.c:1364
#22 0x00007f3de556adee in g_main_dispatch (context=0x562dcd38dab0) at ../../../glib/gmain.c:3179
#23 0x00007f3de556adee in g_main_context_dispatch (context=context@entry=0x562dcd38dab0) at ../../../glib/gmain.c:3844
#24 0x00007f3de556b1a0 in g_main_context_iterate
(context=context@entry=0x562dcd38dab0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
at ../../../glib/gmain.c:3917
#25 0x00007f3de556b22f in g_main_context_iteration (context=context@entry=0x562dcd38dab0, may_block=may_block@entry=1)
at ../../../glib/gmain.c:3978
#26 0x00007f3de4b65cfd in g_application_run (application=0x562dcd397140 [RBApplication], argc=argc@entry=1, argv=argv@entry=0x7fff3f309f28)
at ../../../gio/gapplication.c:2559
#27 0x00007f3de5f6ec86 in rb_application_run (app=0x562dcd397140 [RBApplication], argc=<optimized out>, argv=0x7fff3f309f28)
at rb-application.c:595
#28 0x0000562dcba51249 in main (argc=3, argv=0x7fff3f309f28) at main.c:88