at CURRENT amd64 (rv 340151) # dtrace -h dtrace: failed to establish error handler: "/usr/lib/dtrace/ip.d", line 112: failed to copy typedef in6_addr_t source type: Type information is in parent and unavailable leading to failure at perl5.26.2 compilation with dtrace option "on"
and after reboot it changed to # dtrace -h dtrace: failed to establish error handler: "/usr/lib/dtrace/psinfo.d", line 39: failed to copy type of 'pr_uid' : Type information is in parent and unavailable There was no such problem when FBSD CURRENT version was 12 (it's changed to 13 recently).
*** This bug has been marked as a duplicate of bug 232675 ***