cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations time/timer_delete.c -o time/timer_delete -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
time/timer_delete.c:5:12: error: a parameter list without types is only allowed in a function definition
int (*foo)(timer_t) = timer_delete;
           ^
time/timer_delete.c:5:23: error: use of undeclared identifier 'timer_delete'
int (*foo)(timer_t) = timer_delete;
                      ^
2 errors generated.