Berkeley DB Reference Guide:
  Upgrading Berkeley DB Applications

Release 3.3: DB->get_type

The DB->get_type method method can return an error in the Berkeley DB 3.3 release, and so requires an interface change. C and C++ applications calling DB->get_type should be changed to treat the method's return as an error code, and to pass an additional second argument of type DBTYPE * to the method. The additional argument is used as a memory location in which to store the requested information.

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