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After reading the root cert list from the ssl_ca_file, immediately install it as client CA list of the new SSL context. That gives the SSL context ownership of the list, so that SSL_CTX_free will free it. This avoids a permanent memory leak if we fail further down in be_tls_init(), which could happen if bogus CRL data is offered. The leak could only amount to something if the CRL parameters get broken after server start (else we'd just quit) and then the server is SIGHUP'd many times without fixing the CRL data. That's rather unlikely perhaps, but it seems worth fixing, if only because the code is clearer this way. While we're here, add some comments about the memory management aspects of this logic. Noted by Jelte Fennema and independently by Andres Freund. Back-patch to v10; before commit de41869b6 it doesn't matter, since we'd not re-execute this code during SIGHUP. Discussion: https://postgr.es/m/16160-18367e56e9a28264@postgresql.org
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/.