Fix for 1f0de66ea2a: We need to prevent redeclaration of typedef yyscan_t. (This will work with C11 but not currently with C99.) The generated scanner files provide their own typedef, but we also need to provide one for the interfaces that we expose. So we need to add some preprocessor guards to avoid a redefinition. (This is how the generated scanner files do it internally as well.) This way everything now works independent of the order in which things are included. Discussion: https://www.postgresql.org/message-id/flat/eb6faeac-2a8a-4b69-9189-c33c520e5b7b@eisentraut.org
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.