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By default, allocate this via malloc, as we've been doing since commit62c8421e8. Commitaeb07c55fadopted upstream tzdb's default of allocating it on the stack, but that still doesn't seem like a good idea for the reasons given in62c8421e8(and now memorialized in a comment, in hopes that we don't make the same mistake again). However, under USE_VALGRIND, put it on the stack as upstream does. This accidentally prevents a crash when Python 3.14 is used under Valgrind. The reasons for that are obscure, and it's most likely not our bug, and even if we figured it out it'd be nice to have a fix for buildfarm member skink now rather than after persuading the guilty party to fix it. In the normal non-USE_VALGRIND case, this has no effect on the logic in released branches, and it reverts master to match them. Reported-by: Alexander Lakhin <exclusion@gmail.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/f071e691-5930-4738-9dbd-43ed2da367fe@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. 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/.