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| <h4 class="subsubsection">2.18.4.1 Define the derived structures</h4> |
| <p>You must define a structure for an entry in the hash table, |
| and a structure for the hash table itself. |
| </p> |
| <p>The first field in the structure for an entry in the hash |
| table must be of the type used for an entry in the hash table |
| you are deriving from. If you are deriving from a basic hash |
| table this is <code>struct bfd_hash_entry</code>, which is defined in |
| <code>bfd.h</code>. The first field in the structure for the hash |
| table itself must be of the type of the hash table you are |
| deriving from itself. If you are deriving from a basic hash |
| table, this is <code>struct bfd_hash_table</code>. |
| </p> |
| <p>For example, the linker hash table defines <code>struct |
| bfd_link_hash_entry</code> (in <code>bfdlink.h</code>). The first field, |
| <code>root</code>, is of type <code>struct bfd_hash_entry</code>. Similarly, |
| the first field in <code>struct bfd_link_hash_table</code>, <code>table</code>, |
| is of type <code>struct bfd_hash_table</code>. |
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