pg_init_privs is a system catalogue table containing information about the initial privileges of objects.
The purpose behind this table is to enable applications (e.g.
pg_dump) to detect when privileges have changed from the default and act accordingly (e.g. by explicitly inserting privilege commands in the dumped DDL SQL).
pg_init_privs was added in PostgreSQL 9.6.
Definition by PostgreSQL version
This table has not changed since it was added in PostgreSQL 9.6.