fb60118bf2
The "pltargs" variable wasn't marked volatile, which makes it unsafe to change its value within the PG_TRY block. It looks like the worst outcome would be to fail to release a refcount on Py_None during an (improbable) error exit, which would likely go unnoticed in the field. Still, it's a bug. A one-liner fix could be to mark pltargs volatile, but on the whole it seems cleaner to arrange things so that we don't change its value within PG_TRY. Per report from Xing Guo. This has been there for quite awhile, so back-patch to all supported branches. Discussion: https://postgr.es/m/CACpMh+DLrk=fDv07MNpBT4J413fDAm+gmMXgi8cjPONE+jvzuw@mail.gmail.com
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/.