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Commit716ea626aattempted to fix the problem of building 1-D zero-size arrays once and for all. But it turns out that contrib/intarray has some code that doesn't use construct_array() but just builds arrays by hand, so it didn't get the memo. This appears to affect all of subarray(), intset_subtract(), inner_int_union(), inner_int_inter(), and intarray_concat_arrays(). Back-patch into v11. In the past we've not back-patched this type of change, but since v11 is still in beta it seems all right to include this fix in it. Besides it's more consistent to make the fix in v11 where716ea626aappeared. Report and patch by Alexey Kryuchkov, some cosmetic adjustments by me Report: https://postgr.es/m/153053285112.13258.434620894305716755@wrigleys.postgresql.org Discussion: https://postgr.es/m/CAN85JcYphDLYt4CpMDLZjjNVqGDrFJ5eS3YF=wLAhFoDQuBsyg@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/.