dwarf_get_abbrev_children_flag(3) on FreeBSD
The text ea18a7b9ae6f, 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.
return a flag indicating the presence of children