sys/kern/kern_kcov.c:399:21: error: variable has incomplete type 'struct pctrie_iter'
sys/kern/kern_kcov.c:410:3: error: call to undeclared function 'VM_RADIX_FORALL'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
sys/kern/kern_kcov.c:410:29: error: expected ';' after expression