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autoprewarm.c mostly considered the number of blocks it might be dealing with as being int64. This is unnecessary, because NBuffers is declared as int, and there's been no suggestion that we might widen it in the foreseeable future. Moreover, using int64 is problematic because the code expected INT64_FORMAT to work with fscanf(), something we don't guarantee, and which indeed fails on some older buildfarm members. On top of that, the module randomly used uint32 rather than int64 variables to hold block counters in several places, so it would fail anyway if we ever did have NBuffers wider than that; and it also supposed that pg_qsort could sort an int64 number of elements, which is wrong on 32-bit machines (though no doubt a 32-bit machine couldn't actually have that many buffers). Hence, change all these variables to plain int. In passing, avoid shadowing one variable named i with another, and avoid casting away const in apw_compare_blockinfo. Discussion: https://postgr.es/m/7773.1525288909@sss.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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.