To create a hash table, create an instance of a struct
bfd_hash_table (defined in bfd.h) and call
bfd_hash_table_init (if you know approximately how many
entries you will need, the function bfd_hash_table_init_n,
which takes a size argument, may be used).
bfd_hash_table_init returns false if some sort of
error occurs.
The function bfd_hash_table_init take as an argument a
function to use to create new entries. For a basic hash
table, use the function bfd_hash_newfunc. See section Deriving a new hash table type for why you would want to use a
different value for this argument.
bfd_hash_table_init will create an objalloc which will be
used to allocate new entries. You may allocate memory on this
objalloc using bfd_hash_allocate.
Use bfd_hash_table_free to free up all the memory that has
been allocated for a hash table. This will not free up the
struct bfd_hash_table itself, which you must provide.
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