1571bc0f06
The recursion in contain_nonstrict_functions_walker() was done wrong, causing the strictness check to be bypassed for a parse node that is the immediate input of an ArrayCoerceExpr node. This could allow, for example, incorrect decisions about whether a strict SQL function can be inlined. I didn't add a regression test, because (a) the bug is so narrow and (b) I couldn't think of a test case that wasn't dependent on a large number of other behaviors, to the point where it would likely soon rot to the point of not testing what it was intended to. I broke this in commit c12d570fa, so back-patch to v11. Discussion: https://postgr.es/m/27571.1550617881@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/.