dwarf_add_funcname(3) on FreeBSD
The text e202a54df2c1, 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.
add information about a static function to a DWARF producer instance