dwarf_add_AT_reference(3) on FreeBSD
The text 0402c8631c60, as FreeBSD 12.0-RELEASE, FreeBSD 11.4-RELEASE, FreeBSD 11.3-RELEASE, FreeBSD 11.2-RELEASE, FreeBSD 11.1-RELEASE, FreeBSD 11.0-RELEASE shipped it.
create and attach an attribute that references another DIE