pgsql: Fix some more bugs in contrib/xml2's xslt_process().

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От Tom Lane
Тема pgsql: Fix some more bugs in contrib/xml2's xslt_process().
Дата
Msg-id E1SbhPG-0005CD-QG@gemulon.postgresql.org
обсуждение исходный текст
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Fix some more bugs in contrib/xml2's xslt_process().

It failed to check for error return from xsltApplyStylesheet(), as reported
by Peter Gagarinov.  (So far as I can tell, libxslt provides no convenient
way to get a useful error message in failure cases.  There might be some
inconvenient way, but considering that this code is deprecated it's hard to
get enthusiastic about putting lots of work into it.  So I just made it say
"failed to apply stylesheet", in line with the existing error checks.)

While looking at the code I also noticed that the string returned by
xsltSaveResultToString was never freed, resulting in a session-lifespan
memory leak.

Back-patch to all supported versions.

Branch
------
REL8_4_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/63ac5b0b67a5ea23d24ee745397d39fcf1f77bcc

Modified Files
--------------
contrib/xml2/xslt_proc.c |   19 ++++++++++++++++++-
1 files changed, 18 insertions(+), 1 deletions(-)


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