Horton

Re: BUG #18274: Error 'invalid XML content'

Tom Lane <tgl@sss.pgh.pa.us>

View thread View on postgr.es
From: Tom Lane <tgl@sss.pgh.pa.us>
To: d.koval@postgrespro.ru
Cc: pgsql-bugs@lists.postgresql.org
Date: 2024-01-07T18:18:49Z
Lists: pgsql-bugs 
PG Bug reporting form <noreply@postgresql.org> writes:
> The problem is in the libxml2 library (in xmlParseBalancedChunkMemory
> function), which is used in PostgreSQL and does not support the
> XML_PARSE_HUGE flag.
> There have been attempts to correct this problem [1].
> Apparently they were unsuccessful because libxml2 technical support refused
> to fix the xmlParseBalancedChunkMemory function.

> I'd like to know what the community's opinion is regarding this error:
> 1) the error is correct and does not need to be corrected;
> 2) corrections should be made in the libxml2 library;
> 3) corrections should be made in PostgreSQL (maybe need to stop using the
> xmlParseBalancedChunkMemory function or make other corrections);
> 4) ...?

libxml2 seems to be a little moribund, so I'm not sure that waiting
for #2 to happen will yield results.  On the other hand, XML is
pretty much a development backwater in Postgres too, so if you are
hoping for somebody else to do #3 you are unlikely to get anywhere.
If you want to work on #3 yourself, have at it.

			regards, tom lane

Commits

  1. xml2: Replace deprecated routines with recommended ones

  2. Revert "Add support for parsing of large XML data (>= 10MB)"

  3. Add support for parsing of large XML data (>= 10MB)