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I'd always assumed that backend/optimizer/geqo/'s remarkably poor showing on code coverage metrics was because we weren't exercising it much in the regression tests. But it turns out that a good chunk of the problem is that there's a bunch of code that is physically unreachable (because the calls to it are #ifdef'd out in geqo_main.c) but is being built anyway. Making the called code have #if guards similar to the calling code saves a couple of kilobytes of executable size and should make the coverage numbers more reflective of reality. It's arguable that we should just delete all the unused recombination mechanisms altogether, but I didn't feel a need to go that far today. |
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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: 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/.