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If PrepareTempTablespaces() has never been called in the current transaction, OpenTemporaryFile() will fall back to using the default tablespace, which is a bug if the user wanted temp files placed elsewhere. gistInitBuildBuffers() appears to have this disease already, and it seems like an easy trap for future coders to fall into. We discussed other ways to close this gap, but none of them are prettier or more reliable than just having BufFileCreateTemp do it. In particular, having fd.c do this creates layering issues that we could do without. Per suggestion from Melanie Plageman. Arguably this is a bug fix, but nobody seems very excited about back-patching, so change in HEAD only. Discussion: https://postgr.es/m/CAAKRu_YwzjuGAmmaw4-8XO=OVFGR1QhY_Pq-t3wjb9ribBJb_Q@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/.