<!-- Please drop all sections which are not relevant for your concrete use-case --> <!-- For enhancements and new features only the section 'Version information' might be relevant --> ## Version information <!-- Which version of this software are you using? --> <!-- Which distribution are you using? --> 4.21.5+282+g263d6695b on arch linux ## Steps to reproduce <!-- Please, explain as detailed as possible the sequence of actions necessary to reproduce the issue --> I wasn't really able to figure out the exact steps to reliably reproduce the bug, but this is how I was able to reproduce it most often: 1. Expand the tree view to a sufficiently large directory structure (in my case, a library at the root of a mountable volume) 2. Select one of the leaf directories 3. Collapse and then expand the tree view to the root by clicking the arrow next to the mountable volume ## Backtrace <!-- For crashes, it's best to get a backtrace to see which method failed to execute. To get a meaningful backtrace, you will need to install debug symbols. Check the Xfce wiki to see how to do so: https://docs.xfce.org/contribute/bugs/start#backtraces It's basically `ulimit -c unlimited` to produce coredumps on crashes and then using gdb on it to get the backtrace out of the coredump. --> ``` Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f2fc10254e3 in node_get_pos (node=0x55740d90d460) at ../glib/glib/gsequence.c:1707 1707 if (NODE_RIGHT_CHILD (node)) [Current thread is 1 (Thread 0x7f2fbe8f7f80 (LWP 906))] (gdb) bt #0 0x00007f2fc10254e3 in node_get_pos (node=0x55740d90d460) at ../glib/glib/gsequence.c:1707 #1 0x00007f2fc102718e in g_sequence_iter_get_position (iter=<optimized out>) at ../glib/glib/gsequence.c:1399 #2 0x00007f2fc0b14a3a in gtk_tree_model_filter_get_path (model=<optimized out>, iter=<optimized out>) at ../gtk/gtk/gtktreemodelfilter.c:3124 #3 0x00007f2fc0b204f9 in gtk_tree_model_filter_row_deleted (c_model=<optimized out>, c_path=0x55740d52a2c0, data=0x55740d8e8b40) at ../gtk/gtk/gtktreemodelfilter.c:2679 #8 0x00007f2fc1142234 in <emit signal 'row-deleted' on instance ???> (instance=instance@entry=0x55740d803860, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3624 #4 0x00007f2fc111fbbc in g_closure_invoke (closure=0x7f2fac014b40, return_value=0x0, n_param_values=2, param_values=0x7fff75f216b0, invocation_hint=0x7fff75f21600) at ../glib/gobject/gclosure.c:916 #5 0x00007f2fc113fcfb in signal_emit_unlocked_R (node=node@entry=0x7fff75f217f0, detail=detail@entry=0, instance=instance@entry=0x55740d803860, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff75f216b0) at ../glib/gobject/gsignal.c:3929 #6 0x00007f2fc1141ed4 in signal_emit_valist_unlocked (instance=instance@entry=0x55740d803860, signal_id=signal_id@entry=312, detail=detail@entry=0, var_args=var_args@entry=0x7fff75f21950) at ../glib/gobject/gsignal.c:3561 #7 0x00007f2fc1142179 in g_signal_emit_valist (instance=0x55740d803860, signal_id=312, detail=0, var_args=var_args@entry=0x7fff75f21950) at ../glib/gobject/gsignal.c:3304 #9 0x00007f2fc0b18488 in gtk_tree_model_row_deleted (tree_model=0x55740d803860, path=0x55740d52a2c0) at ../gtk/gtk/gtktreemodel.c:1914 #10 0x00005573f7f2a25a in thunar_tree_model_node_traverse_remove (node=0x55740dcf43c0, user_data=0x55740d803860) at ../thunar/thunar-tree-model.c:1617 #11 0x00007f2fc100e8f3 in g_node_traverse_post_order (node=0x55740dcf43c0, flags=flags@entry=G_TRAVERSE_ALL, func=func@entry=0x5573f7f2a219 <thunar_tree_model_node_traverse_remove>, data=data@entry=0x55740d803860) at ../glib/glib/gnode.c:582 #12 0x00007f2fc1016de9 in g_node_traverse (root=<optimized out>, order=order@entry=G_POST_ORDER, flags=flags@entry=G_TRAVERSE_ALL, depth=depth@entry=-1, func=func@entry=0x5573f7f2a219 <thunar_tree_model_node_traverse_remove>, data=data@entry=0x55740d803860) at ../glib/glib/gnode.c:889 #13 0x00005573f7f2a5b9 in thunar_tree_model_node_traverse_cleanup (node=0x55740dc54330, user_data=0x55740d803860) at ../thunar/thunar-tree-model.c:1542 #14 0x00007f2fc100e7a8 in g_node_traverse_pre_order (node=0x55740dc54330, flags=flags@entry=G_TRAVERSE_ALL, func=func@entry=0x5573f7f2a548 <thunar_tree_model_node_traverse_cleanup>, data=data@entry=0x55740d803860) at ../glib/glib/gnode.c:497 #15 0x00007f2fc100e77b in g_node_traverse_pre_order (node=<optimized out>, flags=flags@entry=G_TRAVERSE_ALL, func=func@entry=0x5573f7f2a548 <thunar_tree_model_node_traverse_cleanup>, data=data@entry=0x55740d803860) at ../glib/glib/gnode.c:507 #16 0x00007f2fc100e77b in g_node_traverse_pre_order (node=<optimized out>, flags=flags@entry=G_TRAVERSE_ALL, func=func@entry=0x5573f7f2a548 <thunar_tree_model_node_traverse_cleanup>, data=data@entry=0x55740d803860) at ../glib/glib/gnode.c:507 #17 0x00007f2fc100e77b in g_node_traverse_pre_order (node=<optimized out>, flags=flags@entry=G_TRAVERSE_ALL, func=func@entry=0x5573f7f2a548 <thunar_tree_model_node_traverse_cleanup>, data=0x55740d803860, data@entry=<error reading variable: value has been optimized out>) at ../glib/glib/gnode.c:507 #18 0x00007f2fc1016db5 in g_node_traverse (root=<optimized out>, order=order@entry=G_PRE_ORDER, flags=flags@entry=G_TRAVERSE_ALL, depth=depth@entry=-1, func=func@entry=0x5573f7f2a548 <thunar_tree_model_node_traverse_cleanup>, data=<error reading variable: value has been optimized out>) at ../glib/glib/gnode.c:883 #19 0x00005573f7f2a18f in thunar_tree_model_cleanup_idle (user_data=<error reading variable: value has been optimized out>) at ../thunar/thunar-tree-model.c:934 #20 0x00007f2fc100cf04 in g_timeout_dispatch (source=0x55740db3b410, callback=<optimized out>, user_data=<optimized out>) at ../glib/glib/gmain.c:5324 #21 g_timeout_dispatch (source=0x55740db3b410, callback=<optimized out>, user_data=<optimized out>) at ../glib/glib/gmain.c:5302 #22 0x00007f2fc100bc16 in g_main_dispatch (context=0x55740d28d9c0) at ../glib/glib/gmain.c:3591 #23 0x00007f2fc100de77 in g_main_context_dispatch_unlocked (context=0x55740d28d9c0) at ../glib/glib/gmain.c:4451 #24 g_main_context_iterate_unlocked (context=context@entry=0x55740d28d9c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4516 #25 0x00007f2fc100dff5 in g_main_context_iteration (context=context@entry=0x55740d28d9c0, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4582 #26 0x00007f2fc125a386 in g_application_run (application=application@entry=0x55740d29f4b0, argc=argc@entry=2, argv=argv@entry=0x7fff75f21f28) at ../glib/gio/gapplication.c:2743 #27 0x00005573f7eb858f in main (argc=2, argv=0x7fff75f21f28) at ../thunar/main.c:80 ```