Some check stage tests fail with core dumps (aur/arch package)

New error when building from git

(cd gimp-test-icon-theme/hicolor && ln -s /home/fre/ARCH-AUR/gimp-git/src/gimp/icons/Color/index.theme index.theme)
  CCLD     test-core
PASS: test-core
  CC       test-gimpidtable.o
  CCLD     test-gimpidtable
PASS: test-gimpidtable
  CC       test-save-and-export.o
  CCLD     test-save-and-export
../../test-driver: line 112: 71495 Trace/breakpoint trap   (core dumped) "$@" >> "$log_file" 2>&1
FAIL: test-save-and-export
  CC       test-session-2-8-compatibility-multi-window.o
  CCLD     test-session-2-8-compatibility-multi-window
../../test-driver: line 112: 71766 Trace/breakpoint trap   (core dumped) "$@" >> "$log_file" 2>&1
FAIL: test-session-2-8-compatibility-multi-window
  CC       test-session-2-8-compatibility-single-window.o
  CCLD     test-session-2-8-compatibility-single-window
../../test-driver: line 112: 72029 Trace/breakpoint trap   (core dumped) "$@" >> "$log_file" 2>&1
FAIL: test-session-2-8-compatibility-single-window
  CC       test-single-window-mode.o
  CCLD     test-single-window-mode
../../test-driver: line 112: 72295 Trace/breakpoint trap   (core dumped) "$@" >> "$log_file" 2>&1
FAIL: test-single-window-mode
  CC       test-tools.o
test-tools.c: In function ‘crop_set_width_without_pending_rect’:
test-tools.c:447:25: warning: variable ‘tool_options_gui’ set but not used [-Wunused-but-set-variable]
  447 |   GtkWidget            *tool_options_gui;
      |                         ^~~~~~~~~~~~~~~~
  CCLD     test-tools
../../test-driver: line 112: 72561 Trace/breakpoint trap   (core dumped) "$@" >> "$log_file" 2>&1
FAIL: test-tools
  CC       test-ui.o
test-ui.c: In function ‘keyboard_zoom_focus’:
test-ui.c:230:2: warning: #warning disabled zoom test, it fails randomly, no clue how to fix it [-Wcpp]
  230 | #warning disabled zoom test, it fails randomly, no clue how to fix it
      |  ^~~~~~~
test-ui.c: In function ‘alt_click_is_layer_to_selection’:
test-ui.c:254:2: warning: #warning FIXME: please fix alt_click_is_layer_to_selection test [-Wcpp]
  254 | #warning FIXME: please fix alt_click_is_layer_to_selection test
      |  ^~~~~~~
test-ui.c: In function ‘restore_recently_closed_multi_column_dock’:
test-ui.c:366:2: warning: #warning FIXME test disabled until we depend on GTK+ >= 2.24.11 [-Wcpp]
  366 | #warning FIXME test disabled until we depend on GTK+ >= 2.24.11
      |  ^~~~~~~
test-ui.c:342:14: warning: unused variable ‘n_session_infos_after_restore’ [-Wunused-variable]
  342 |   gint       n_session_infos_after_restore = -1;
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test-ui.c:338:14: warning: unused variable ‘gimp’ [-Wunused-variable]
  338 |   Gimp      *gimp                          = GIMP (data);
      |              ^~~~
test-ui.c: In function ‘repeatedly_switch_window_mode’:
test-ui.c:619:2: warning: #warning FIXME: plesase fix repeatedly_switch_window_mode test [-Wcpp]
  619 | #warning FIXME: plesase fix repeatedly_switch_window_mode test
      |  ^~~~~~~
test-ui.c: In function ‘main’:
test-ui.c:887:38: warning: missing terminating ' character
  887 | #warning FIXME: hide/show docks doesn't work when running make check
      |                                      ^
test-ui.c:887:2: warning: #warning FIXME: hide/show docks doesn't work when running make check [-Wcpp]
  887 | #warning FIXME: hide/show docks doesn't work when running make check
      |  ^~~~~~~
test-ui.c:892:49: warning: missing terminating ' character
  892 | #warning FIXME: maximize_state_in_aux_data doesn't work without WM
      |                                                 ^
test-ui.c:892:2: warning: #warning FIXME: maximize_state_in_aux_data doesn't work without WM [-Wcpp]
  892 | #warning FIXME: maximize_state_in_aux_data doesn't work without WM
      |  ^~~~~~~
At top level:
test-ui.c:826:1: warning: ‘gimp_ui_is_gimp_layer_list’ defined but not used [-Wunused-function]
  826 | gimp_ui_is_gimp_layer_list (GObject *object)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
test-ui.c:752:1: warning: ‘gimp_ui_synthesize_click’ defined but not used [-Wunused-function]
  752 | gimp_ui_synthesize_click (GtkWidget       *widget,
      | ^~~~~~~~~~~~~~~~~~~~~~~~
test-ui.c:522:1: warning: ‘maximize_state_in_aux_data’ defined but not used [-Wunused-function]
  522 | maximize_state_in_aux_data (gconstpointer data)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
test-ui.c:515:1: warning: ‘show_docks_in_single_window_mode’ defined but not used [-Wunused-function]
  515 | show_docks_in_single_window_mode (gconstpointer data)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test-ui.c:508:1: warning: ‘hide_docks_in_single_window_mode’ defined but not used [-Wunused-function]
  508 | hide_docks_in_single_window_mode (gconstpointer data)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  CCLD     test-ui
../../test-driver: line 112: 72825 Trace/breakpoint trap   (core dumped) "$@" >> "$log_file" 2>&1
FAIL: test-ui
  CC       test-xcf.o
  CCLD     test-xcf
PASS: test-xcf
============================================================================
Testsuite summary for GIMP 2.99.7
============================================================================
# TOTAL: 9
# PASS:  3
# SKIP:  0
# XFAIL: 0
# FAIL:  6
# XPASS: 0
# ERROR: 0