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c4939f1215
This ancient bit of code was summarily trapping any ereport longjmp whatsoever and assuming that it must represent an invalid-XML report. It's not really appropriate to handle OOM-like situations that way: maybe the input is valid or maybe not, but we couldn't find out. And it'd be a seriously bad idea to ignore, say, a query cancel error that way. (Perhaps that can't happen because there is no CHECK_FOR_INTERRUPTS anywhere within xml_parse, but even if that's true today it's obviously a very fragile assumption.) But in the wake of the previous commit, we can drop the PG_TRY here altogether, and use the soft error mechanism to catch only the kinds of errors that are legitimate to treat as invalid-XML. (This is our first use of the soft error mechanism for something not directly related to a datatype input function. It won't be the last.) xml_is_document can be converted in the same way. That one is not actively broken, because it was checking specifically for ERRCODE_INVALID_XML_DOCUMENT rather than trapping everything; but the code is still shorter and probably faster this way. Discussion: https://postgr.es/m/3564577.1671142683@sss.pgh.pa.us |
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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/.