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When getParamDescriptions was changed to handle out-of-memory better by cribbing error recovery logic from getRowDescriptions/getAnotherTuple, somebody omitted to copy the stanza about checking for excess data in the message. But you need to do that, since continue'ing out of the switch in pqParseInput3 means no such check gets applied there anymore. Noted while looking at Michael Paquier's patch that made yet another copy of this advance_and_error logic. (This whole business desperately needs refactoring, because I sure don't want to see a dozen copies of this code, but that's where we seem to be headed. What's more, the "suspend parsing on EOF return" convention is a holdover from protocol 2 and shouldn't exist at all in protocol 3, because we don't process partial messages anymore. But for now, just fix the obvious bug.) Also, fix some wrong/missing comments about what the API spec is for these three functions. This doesn't seem worthy of back-patching, even though it's a bug; the case shouldn't ever arise in the field.
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/.