c623e8593e
Move lazy_scan_heap()'s per_buffer_data variable into a tighter scope. In lazy_scan_heap()'s phase I heap vacuuming, the read stream API returns a pointer to the next block number to vacuum. As long as read_stream_next_buffer() returns a valid buffer, per_buffer_data should always be valid. Move per_buffer_data into a tighter scope and make sure it is reset to NULL on each iteration so that we get a core dump instead of bogus data from a previous block if something goes wrong in the read stream API. Suggested-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/626104.1739729538%40sss.pgh.pa.us
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/.