mirror of
https://github.com/postgres/postgres.git
synced 2025-05-31 03:21:24 +03:00
10ad15f48a
The 9.4 version of log_heap_update() stores the full length of the old_key_tuple in xlhdr.t_len, rather than the length less offsetof(HeapTupleHeaderData, t_bits) as is customary elsewhere. DecodeUpdate() was expecting the usual definition, which caused it to copy 23 bytes too much out of the WAL-file buffer. Most of the time that's harmless, although Valgrind on buildfarm member skink has been complaining about it, and there was one actual SIGSEGV on curculio that might have been caused by this. The reconstructed key tuple would also have an over-length t_len, though offhand I do not see how that could cause any visible problem. The problem seems to have disappeared in the 9.5 WAL format changes (commit 2c03216d8), so we only need to fix 9.4. Discussion: <11035.1469058247@sss.pgh.pa.us>
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/.