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Michael Paquier 8285b484a4 Fix potential NULL pointer dereference in getIdentitySequence() 
The function invokes SearchSysCacheAttNum() and SearchSysCacheAttName().
They may respectively return 0 for the attribute number or NULL for
the attribute name if the attribute does not exist, without any kind of
error handling.  The common practice is to check that the data retrieved
from the syscache is valid.  There is no risk of NULL pointer
dereferences currently, but let's stick to the practice of making sure
that this data is always valid, to catch future inconsistency mistakes.
The code is switched to use get_attnum() and get_attname(), and adds
some error handling.

Oversight in 509199587d.

Reported-by: Ranier Vilela
Author: Ashutosh Bapat
Discussion: https://postgr.es/m/CAEudQAqh_RZqoFcYKso5d9VhF-Vd64_ZodfQ_2zSusszkEmyRg@mail.gmail.com
2024-05-26 20:58:27 +09:00
config jit: Remove {llvm-config,clang}-N configure probes. 2024-05-16 13:58:25 +12:00
contrib amcheck: Fixes for right page check during unique constraint check 2024-05-26 07:14:12 +03:00
doc doc PG 17 relnotes: improve btree "set/array" matching item 2024-05-25 23:56:06 -04:00
src Fix potential NULL pointer dereference in getIdentitySequence() 2024-05-26 20:58:27 +09:00
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README.md

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/.