Initializing compile time constant struct or arrays from another such variable is a gcc extension, while clang strictly requires a compile time constant literal. As reported by LKP: >> drivers/gpu/drm/scheduler/tests/tests_scheduler.c:675:10: error: initializer element is not a compile-time constant drm_sched_scheduler_two_clients_attr), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/kunit/test.h:224:13: note: expanded from macro 'KUNIT_CASE_PARAM_ATTR' .attr = attributes, .module_name = KBUILD_MODNAME} ^~~~~~~~~~ 1 error generated. vim +675 drivers/gpu/drm/scheduler/tests/tests_scheduler.c 671 672 static struct kunit_case drm_sched_scheduler_two_clients_tests[] = { 673 KUNIT_CASE_PARAM_ATTR(drm_sched_scheduler_two_clients_test, 674 drm_sched_scheduler_two_clients_gen_params, > 675 drm_sched_scheduler_two_clients_attr), 676 {} 677 }; 678 Fix it by using a compound literal as other tests do. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202605220312.Pu7UO05u-lkp@intel.com/ Fixes: 97ef806a5314 ("drm/sched: Add some scheduling quality unit tests") Cc: Philipp Stanner <phasta@kernel.org> Acked-by: Philipp Stanner <phasta@kernel.org> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20260522090129.9385-1-tvrtko.ursulin@igalia.com