9863c90759
If the variable's value is null, exec_stmt_return() missed filling in estate->rettype. This is a pretty old bug, but we'd managed not to notice because that value isn't consulted for a null result ... unless we have to cast it to a domain. That case led to a failure with "cache lookup failed for type 0". The correct way to assign the data type is known by exec_eval_datum. While we could copy-and-paste that logic, it seems like a better idea to just invoke exec_eval_datum, as the ROW case already does. Reported-by: Pavel Stehule <pavel.stehule@gmail.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/CAFj8pRBT_ahexDf-zT-cyH8bMR_qcySKM8D5nv5MvTWPiatYGA@mail.gmail.com Backpatch-through: 14
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/.