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939d10cd87
The CHECK_IS_BINARY_UPGRADE macro is not sufficient security protection if we're going to dereference pass-by-reference arguments before it. But in any case we really need to explicitly check PG_ARGISNULL for all the arguments of a non-strict function, not only the ones we expect null values for. Oversight in commits 30982be4e5019684e1772dd9170aaa53f5a8e894 and f92fc4c95ddcc25978354a8248d3df22269201bc. Found by Andreas Seltenreich. (The other usages in pg_upgrade_support.c seem safe.)
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/.