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Both dict_int and dict_xsyn were blithely assuming that whatever memory palloc gives back will be pre-zeroed. This would typically work for just about long enough to run their regression tests, and no longer :-(. The pre-9.0 code in dict_xsyn was even lamer than that, as it would happily give back a pointer to the result of palloc(0), encouraging its caller to access off the end of memory. Again, this would just barely fail to fail as long as memory contained nothing but zeroes. Per a report from Rodrigo Hjort that code based on these examples didn't work reliably. |
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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: http://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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.