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16ebf4f971
Coverity complained that pg_saslprep() could suffer integer overflow,
leading to under-allocation of the output buffer, if the input string
exceeds SIZE_MAX/4. This hazard seems largely hypothetical, but it's
easy enough to defend against, so let's do so.
This patch creates a third place in src/common/ where we are locally
defining MaxAllocSize so that we can test against that in the same way
in backend and frontend compiles. That seems like about two places
too many, so the next patch will move that into common/fe_memutils.h.
I'm hesitant to do that in back branches however.
Back-patch to v14. The code looks similar in older branches, but
before commit
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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: 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/.