6303a57309
opr_sanity's binary_coercible() function has always been meant to match the parser's notion of binary coercibility, but it also has always been a rather poor approximation of the parser's real rules (as embodied in IsBinaryCoercible()). That hasn't bit us so far, but it's predictable that it will eventually. It also now emerges that implementing this check in plpgsql performs absolutely horribly in clobber-cache-always testing. (Perhaps we could do something about that, but I suspect it just means that plpgsql is exploiting catalog caching to the hilt.) Hence, let's replace binary_coercible() with a C shim that directly invokes IsBinaryCoercible(), eliminating both the semantic hazard and the performance issue. Most of regress.c's C functions are declared in create_function_1, but we can't simply move that to before opr_sanity/type_sanity since those tests would complain about the resulting shell types. I chose to split it into create_function_0 and create_function_1. Since create_function_0 now runs as part of a parallel group while create_function_1 doesn't, reduce the latter to create just those functions that opr_sanity and type_sanity would whine about. To make room for create_function_0 in the second parallel group of tests, move tstypes to the third parallel group. In passing, clean up some ordering deviations between parallel_schedule and serial_schedule. Discussion: https://postgr.es/m/292305.1620503097@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/.