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These uint16 fields could be overflowed by excessively long input, producing strange results. Complain for invalid input. Likewise check for out-of-range values of the repeat counts in lquery. (We don't try too hard on that one, notably not bothering to detect if atoi's result has overflowed.) Also detect length overflow in ltree_concat. In passing, be more consistent about whether "syntax error" messages include the type name. Also, clarify the documentation about what the size limit is. This has been broken for a long time, so back-patch to all supported branches. Nikita Glukhov, reviewed by Benjie Gillam and Tomas Vondra Discussion: https://postgr.es/m/CAP_rww=waX2Oo6q+MbMSiZ9ktdj6eaJj0cQzNu=Ry2cCDij5fw@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/.