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It's hard to disable ASLR on current macOS releases, for testing with -DEXEC_BACKEND. You could already set the environment variable PG_SHMEM_ADDR to something not likely to collide with mappings created earlier in process startup. Let's also provide a default value that works on current releases and architectures, for developer convenience. As noted in the pre-existing comment, this is a horrible hack, but -DEXEC_BACKEND is only used by Unix-based PostgreSQL developers for testing some otherwise Windows-only code paths, so it seems excusable. Back-patch to all supported branches. Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/20210806032944.m4tz7j2w47mant26%40alap3.anarazel.de
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/.