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After an internal failure in shortest() or longest() while pinning down the exact location of a match, find() forgot to free the DFA structure before returning. This is pretty unlikely to occur, since we just successfully ran the "search" variant of the DFA; but it could happen, and it would result in a session-lifespan memory leak since this code uses malloc() directly. Problem seems to have been aboriginal in Spencer's library, so back-patch all the way. In passing, correct a thinko in a comment I added awhile back about the meaning of the "ntree" field. I happened across these issues while comparing our code to Tcl's version of the library. |
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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. 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/.