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Add the target context's name to the errdetail field of "out of memory" errors in mcxt.c. Per discussion, this seems likely to be useful to help narrow down the cause of a reported failure, and it costs little. Also, now that context names are required to be compile-time constants in all cases, there's little reason to be concerned about security issues from exposing these names to users. (Because of such concerns, we are *not* including the context "ident" field.) In passing, add unlikely() markers to the allocation-failed tests, just to be sure the compiler is on the right page about that. Also, in palloc and friends, copy CurrentMemoryContext into a local variable, as that's almost surely cheaper to reference than a global. Discussion: https://postgr.es/m/1099.1522285628@sss.pgh.pa.us
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/.