xml2: Fix crash with namespace nodes in xpath_nodeset() pgxmlNodeSetToText() passed nodeTab[i]->doc to xmlNodeDump() without checking the node type, which could cause a crash as a XML_NAMESPACE_DECL maps to a xmlNs struct. The passed-in code would then be dereferenced in xmlNodeDump().
This commit switches the code to render XML_NAMESPACE_DECL nodes with xmlXPathCastNodeToString(), like xpath_table(). Some tests are added, written by me. Author: Andrey Chernyy <[email protected]> Co-authored-by: Michael Paquier <[email protected]> Discussion: https://postgr.es/m/20260611031436.5afde3cb@andrnote Backpatch-through: 14 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/91b57eadeb0f1f971aebfc3f9c9045477b0e0438 Modified Files -------------- contrib/xml2/expected/xml2.out | 8 ++++++++ contrib/xml2/expected/xml2_1.out | 8 ++++++++ contrib/xml2/sql/xml2.sql | 3 +++ contrib/xml2/xpath.c | 15 +++++++++++---- 4 files changed, 30 insertions(+), 4 deletions(-)
