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The atomics code asserts proper alignment in various places. That's mainly because the alignment of 64bit integers is not sufficient for atomic operations on all platforms. Some ABIs only have four byte alignment, but don't have atomic behavior when crossing page boundaries. The flags code isn't affected by that however, as the type alignment always is sufficient for atomic operations. Nevertheless the code asserted alignment requirements. Before 8c3debbb it was only broken on hppa, after it probably affect further platforms. Thus remove the assertions for pg_atomic_flag operators. Per buildfarm animal pademelon. Discussion: https://postgr.es/m/7223.1523124425@sss.pgh.pa.us Backpatch: 9.5-
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/.