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item, if the page containing the current item is split while the indexscan is stopped and holds no read-lock on the page. The current item might move right onto a page that the indexscan holds no pin on. In the prior code this would allow btbulkdelete to reach and possibly delete the item, causing 'my bits moved right off the end of the world!' when the indexscan finally resumes. Fix by chaining read-locks to the right during _bt_restscan and requiring btbulkdelete to LockBufferForCleanup on every page it scans, not only those with deletable items. Per my pghackers message of 25-May-02. (Too bad no one could think of a better way.)
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 several language bindings, including C, Perl, Python, and Tcl, as well as drivers for JDBC. As of v7.3, the ODBC and C++ interfaces have been moved over to the PostgreSQL Projects WebSite @ http://gborg.postgresql.org. 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 ftp://ftp.postgresql.org/pub/. For more information look at our web site located at http://www.postgresql.org/.