447dbf7aa7
statext_dependencies_load and statext_ndistinct_load were not up to snuff, in addition to being randomly different from each other. In detail: * Deserialize the fetched bytea value before releasing the syscache entry, not after. This mistake causes visible regression test failures when running with -DCATCACHE_FORCE_RELEASE. Since it's not exposed by -DCLOBBER_CACHE_ALWAYS, I think there may be no production hazard here at present, but it's at least a latent bug. * Use DatumGetByteaPP not DatumGetByteaP to save a detoasting cycle for short stats values; the deserialize function has to be, and is, prepared for short-header values since its other caller uses PP. * Use a test-and-elog for null stats values in both functions, rather than a test-and-elog in one case and an Assert in the other. Perhaps Asserts would be sufficient in both cases, but I don't see a good argument for them being different. * Minor cosmetic changes to make these functions more visibly alike. Backpatch to v10 where this code came in. Amit Langote, minor additional hacking by me Discussion: https://postgr.es/m/1349aabb-3a1f-6675-9fc0-65e2ce7491dd@lab.ntt.co.jp |
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README
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/.