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We were merely Assert'ing that the Var matched the RTE it's supposedly from. But if the user passes incorrect information to pg_get_expr(), the RTE might in fact not match; this led either to Assert failures or core dumps, as reported by Chris Hanks in bug #14220. To fix, just convert the Asserts to test-and-elog. Adjust an existing test-and-elog elsewhere in the same function to be consistent in wording. (If we really felt these were user-facing errors, we might promote them to ereport's; but I can't convince myself that they're worth translating.) Back-patch to 9.3; the problematic code doesn't exist before that, and a quick check says that 9.2 doesn't crash on such cases. Michael Paquier and Thomas Munro Report: <20160629224349.1407.32667@wrigleys.postgresql.org> |
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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/.