cc -pthread -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sched/struct-sched_param-sched_priority.c -o sched/struct-sched_param-sched_priority -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv sched/struct-sched_param-sched_priority.c:2:17: error: ‘struct sched_param’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror] 2 | void foo(struct sched_param* bar) | ^~~~~~~~~~~ sched/struct-sched_param-sched_priority.c: In function ‘foo’: sched/struct-sched_param-sched_priority.c:4:24: error: invalid use of undefined type ‘struct sched_param’ 4 | int *qux = &bar->sched_priority; | ^~ cc1: all warnings being treated as errors