Using GI_SCANNER_DEBUG=save-temps I can at least see the offending binary. So here's more useful information:
Thread 1 "Shell-0.1" received signal SIGSEGV, Segmentation fault. 0x00007ffff7bb911f in type_check_is_value_type_U ( type=type@entry=<error reading variable: Cannot access memory at address 0x555cfd48>) at ../../../../gobject/gtype.c:4156 4156 ../../../../gobject/gtype.c: No such file or directory. (gdb) bt #0 0x00007ffff7bb911f in type_check_is_value_type_U (type=type@entry=<error reading variable: Cannot access memory at address 0x555cfd48>) at ../../../../gobject/gtype.c:4156 #1 0x00007ffff7bb911f in g_type_check_is_value_type (type=type@entry=<error reading variable: Cannot access memory at address 0x555cfd48>) at ../../../../gobject/gtype.c:4192 #2 0x00007ffff7baab10 in g_signal_newv (signal_name=signal_name@entry=0x7ffff7dbbbae "startup-sequence-changed", itype=itype@entry=0x5555555cfb50 [ShellWindowTracker], signal_flags=G_SIGNAL_RUN_LAST, class_closure=0x0, accumulator=0x0, accu_data=0x0, c_marshaller=0x0, return_type=0x4 [void], n_params=1, param_types=0x5555555c9a70) at ../../../../gobject/gsignal.c:1672 #3 0x00007ffff7bab964 in g_signal_new_valist (signal_name=signal_name@entry=0x7ffff7dbbbae "startup-sequence-changed", itype=itype@entry=0x5555555cfb50 [ShellWindowTracker], signal_flags=<optimised out>, class_closure=<optimised out>, accumulator=<optimised out>, accu_data=<optimised out>, c_marshaller=0x0, return_type=0x4 [void], n_params=1, args=0x7fffffffe000) at ../../../../gobject/gsignal.c:1902 #4 0x00007ffff7baba4e in g_signal_new (signal_name=0x7ffff7dbbbae "startup-sequence-changed", itype=0x5555555cfb50 [ShellWindowTracker], signal_flags=<optimised out>, class_offset=<optimised out>, accumulator=<optimised out>, accu_data=<optimised out>, c_marshaller=0x0, return_type=0x4 [void], n_params=1) at ../../../../gobject/gsignal.c:1437 #5 0x00007ffff7dad20e in shell_window_tracker_class_init (klass=0x5555555cfc90) at ../src/shell-window-tracker.c:112 #6 0x00007ffff7dacfca in shell_window_tracker_class_intern_init (klass=0x5555555cfc90) at ../src/shell-window-tracker.c:51 #7 0x00007ffff7bb574b in type_class_init_Wm (pclass=0x50 [g_type: GObject], node=0x5555555cfb50) at ../../../../gobject/gtype.c:2232 #8 0x00007ffff7bb574b in g_type_class_ref (type=<optimised out>) at ../../../../gobject/gtype.c:2947 #9 0x00005555555580e5 in dump_properties (type=0x5555555cfb50 [ShellWindowTracker], out=0x5555555b6510 [GLocalFileOutputStream]) at /home/dan/git/gnome-shell/build/tmp-introspectrg6kp9rm/Shell-0.1.c:137 #10 0x0000555555557b83 in dump_object_type (out=0x5555555b6510 [GLocalFileOutputStream], symbol=<optimised out>, type=0x5555555cfb50 [ShellWindowTracker]) at /home/dan/git/gnome-shell/build/tmp-introspectrg6kp9rm/Shell-0.1.c:260 #11 0x0000555555557b83 in dump_type (out=0x5555555b6510 [GLocalFileOutputStream], symbol=<optimised out>, type=0x5555555cfb50 [ShellWindowTracker]) at /home/dan/git/gnome-shell/build/tmp-introspectrg6kp9rm/Shell-0.1.c:402 #12 0x0000555555557b83 in dump_irepository (error=0x7fffffffe260, arg=<optimised out>) at /home/dan/git/gnome-shell/build/tmp-introspectrg6kp9rm/Shell-0.1.c:547 #13 0x0000555555557b83 in main (argc=<optimised out>, argv=<optimised out>) at /home/dan/git/gnome-shell/build/tmp-introspectrg6kp9rm/Shell-0.1.c:610
Using GI_SCANNER_ DEBUG=save- temps I can at least see the offending binary. So here's more useful information:
Thread 1 "Shell-0.1" received signal SIGSEGV, Segmentation fault. is_value_ type_U ( type@entry= <error reading variable: Cannot access memory at address 0x555cfd48>) at ../../. ./../gobject/ gtype.c: 4156 ./../gobject/ gtype.c: No such file or directory. is_value_ type_U type@entry= <error reading variable: Cannot access memory at address 0x555cfd48>) at ../../. ./../gobject/ gtype.c: 4156 check_is_ value_type type@entry= <error reading variable: Cannot access memory at address 0x555cfd48>) at ../../. ./../gobject/ gtype.c: 4192 name=signal_ name@entry= 0x7ffff7dbbbae "startup- sequence- changed" , itype=itype@ entry=0x5555555 cfb50 [ShellWindowTra cker], signal_ flags=G_ SIGNAL_ RUN_LAST, class_closure=0x0, accumulator=0x0, accu_data=0x0, c_marshaller=0x0, return_type=0x4 [void], n_params=1, param_types= 0x5555555c9a70) ./../gobject/ gsignal. c:1672 name=signal_ name@entry= 0x7ffff7dbbbae "startup- sequence- changed" , itype=itype@ entry=0x5555555 cfb50 [ShellWindowTra cker], signal_ flags=< optimised out>, class_closure= <optimised out>, accumulator= <optimised out>, accu_data= <optimised out>, c_marshaller=0x0, return_type=0x4 [void], n_params=1, args=0x7fffffff e000) at ../../. ./../gobject/ gsignal. c:1902 name=0x7ffff7db bbae "startup- sequence- changed" , itype=0x5555555 cfb50 [ShellWindowTra cker], signal_ flags=< optimised out>, class_offset= <optimised out>, accumulator= <optimised out>, accu_data= <optimised out>, c_marshaller=0x0, return_type=0x4 [void], n_params=1) at ../../. ./../gobject/ gsignal. c:1437 tracker_ class_init 0x5555555cfc90) at ../src/ shell-window- tracker. c:112 tracker_ class_intern_ init 0x5555555cfc90) at ../src/ shell-window- tracker. c:51 fb50) ./../gobject/ gtype.c: 2232 ./../gobject/ gtype.c: 2947 0x5555555cfb50 [ShellWindowTra cker], out=0x5555555b6510 [GLocalFileOutp utStream] ) git/gnome- shell/build/ tmp-introspectr g6kp9rm/ Shell-0. 1.c:137 0x5555555b6510 [GLocalFileOutp utStream] , symbol=<optimised out>, type=0x5555555cfb50 [ShellWindowTra cker]) git/gnome- shell/build/ tmp-introspectr g6kp9rm/ Shell-0. 1.c:260 0x5555555b6510 [GLocalFileOutp utStream] , symbol=<optimised out>, type=0x5555555cfb50 [ShellWindowTra cker]) git/gnome- shell/build/ tmp-introspectr g6kp9rm/ Shell-0. 1.c:402 0x7fffffffe260, arg=<optimised out>) git/gnome- shell/build/ tmp-introspectr g6kp9rm/ Shell-0. 1.c:547 git/gnome- shell/build/ tmp-introspectr g6kp9rm/ Shell-0. 1.c:610
0x00007ffff7bb911f in type_check_
type=
4156 ../../.
(gdb) bt
#0 0x00007ffff7bb911f in type_check_
(type=
#1 0x00007ffff7bb911f in g_type_
(type=
#2 0x00007ffff7baab10 in g_signal_newv
(signal_
at ../../.
#3 0x00007ffff7bab964 in g_signal_new_valist
(signal_
#4 0x00007ffff7baba4e in g_signal_new
(signal_
#5 0x00007ffff7dad20e in shell_window_
(klass=
#6 0x00007ffff7dacfca in shell_window_
(klass=
#7 0x00007ffff7bb574b in type_class_init_Wm
(pclass=0x50 [g_type: GObject], node=0x5555555c
at ../../.
#8 0x00007ffff7bb574b in g_type_class_ref (type=<optimised out>)
at ../../.
#9 0x00005555555580e5 in dump_properties
(type=
at /home/dan/
#10 0x0000555555557b83 in dump_object_type
(out=
at /home/dan/
#11 0x0000555555557b83 in dump_type
(out=
at /home/dan/
#12 0x0000555555557b83 in dump_irepository
(error=
at /home/dan/
#13 0x0000555555557b83 in main (argc=<optimised out>, argv=<optimised out>)
at /home/dan/