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This is usually harmless, but if you were very unlucky it could provoke a segfault due to the "to" string being right up against the end of memory. Found via valgrind testing (so we might've found it earlier, except that our regression tests lacked any exercise of translate()'s deletion feature). Fix by switching the order of the test-for-end-of-string and advance-pointer steps. While here, compute "to_ptr + tolen" just once. (Smarter compilers might figure that out for themselves, but let's just make sure.) Report and fix by Daniil Anisimov, in bug #17816. Discussion: https://postgr.es/m/17816-70f3d2764e88a108@postgresql.org |
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README.git |
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/.