Function
dwarf_add_die_to_debug()
sets the root debugging information entry of a DWARF producer
instance.
All debugging information entries linked to the root entry will also
be added to the producer instance.
Argument
dbg
should reference a DWARF producer instance allocated using
dwarf_producer_init(3)
or
dwarf_producer_init_b(3).
Argument
first_die
should hold the debugging information entry which will become
the root DIE.
If argument
err
is not NULL, it will be used to store error information in case
of an error.