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Tom Lane cacd42d62c Rewrite libxml error handling to be more robust. ... libxml reports some errors (like invalid xmlns attributes) via the error handler hook, but still returns a success indicator to the library caller. This causes us to miss some errors that are important to report. Since the "generic" error handler hook doesn't know whether the message it's getting is for an error, warning, or notice, stop using that and instead start using the "structured" error handler hook, which gets enough information to be useful. While at it, arrange to save and restore the error handler hook setting in each libxml-using function, rather than assuming we can set and forget the hook. This should improve the odds of working nicely with third-party libraries that also use libxml. In passing, volatile-ize some local variables that get modified within PG_TRY blocks. I noticed this while testing with an older gcc version than I'd previously tried to compile xml.c with. Florian Pflug and Tom Lane, with extensive review/testing by Noah Misch		15 years ago
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expected	Convert contrib modules to use the extension facility.	15 years ago
sql	Convert contrib modules to use the extension facility.	15 years ago
.gitignore	Support "make check" in contrib	15 years ago
Makefile	Convert contrib modules to use the extension facility.	15 years ago
xml2--1.0.sql	Avoid use of CREATE OR REPLACE FUNCTION in extension installation files.	15 years ago
xml2--unpackaged--1.0.sql	Fix upgrade of contrib/xml2 from 9.0.	15 years ago
xml2.control	Fix upgrade of contrib/xml2 from 9.0.	15 years ago
xpath.c	Rewrite libxml error handling to be more robust.	15 years ago
xslt_proc.c	Rewrite libxml error handling to be more robust.	15 years ago