babelfish-for-postgresql / babelfish_extensions / 23318037237

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Fix crash in tsql_row_to_xml_path function  (#4665)

Fixed a crash in tsql_row_to_xml_path function that occurred when processing FOR XML PATH queries with all-null column values. The crash was caused by unsafe string buffer manipulation when converting null elements to self-closing XML tags without proper bounds checking.

This fix reorganizes the null-handling logic to prevent buffer underflow.

Task: BABEL-5364

Authored-by: Rohit Bhagat rohitbgt@amazon.com

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