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Tom Lane 8b965c549d compute_bitmap_pages' loop_count parameter should be double not int. 
The value was double in the original implementation of this logic.
Commit da08a6598 pulled it out into a subroutine, but carelessly
declared the parameter as int when it should have been double.
On most platforms, the only ill effect would be to clamp the value
to be not more than INT_MAX, which would seldom be exceeded and
probably wouldn't change the estimates too much anyway.  Nonetheless,
it's wrong and can cause complaints from ubsan.

While here, improve the comments and parameter names.

This is an ABI change in a globally exposed subroutine, so
back-patching would create some risk of breaking extensions.
The value of the fix doesn't seem high enough to warrant taking
that risk, so fix in HEAD only.

Per report from Alexander Lakhin.

Discussion: https://postgr.es/m/f5e15fe1-202d-1936-f47c-f0c69a936b72@gmail.com
2023-12-18 12:46:10 -05:00
config Remove distprep 2023-11-06 15:18:04 +01:00
contrib Optimize nbtree backward scan boundary cases. 2023-12-08 11:05:17 -08:00
doc Provide vectored variants of smgrread() and smgrwrite(). 2023-12-18 15:01:50 +13:00
src compute_bitmap_pages' loop_count parameter should be double not int. 2023-12-18 12:46:10 -05:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml Use "template" data directory in tests 2023-08-24 14:38:02 -07:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add "Add trailing commas to enum definitions" to .git-blame-ignore-revs 2023-10-26 13:03:43 +02:00
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aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Optimize pg_readv/pg_pwritev single vector case. 2023-11-29 17:19:25 +13:00
configure.ac Optimize pg_readv/pg_pwritev single vector case. 2023-11-29 17:19:25 +13:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:37 -05:00
GNUmakefile.in Remove distprep 2023-11-06 15:18:04 +01:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Dynamically find correct installation docs in Makefile. 2022-01-19 14:48:25 +01:00
meson_options.txt meson: Change default of 'selinux' feature option to auto 2023-11-17 10:23:02 -08:00
meson.build Fix typo 2023-12-14 09:48:24 +01:00
README README: remove duplicate download link & mention related softw. 2023-11-08 16:36:18 -05:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

README 

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.

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, 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/.