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Michael Paquier 0b0041b942 xml2: Fix failure with xslt_process() under -fsanitize=undefined ... The logic of xslt_process() has never considered the fact that xsltSaveResultToString() would return NULL for an empty string (the upstream code has always done so, with a string length of 0). This would cause memcpy() to be called with a NULL pointer, something forbidden by POSIX. Like 46ab07ffda and similar fixes, this is backpatched down to all the supported branches, with a test case to cover this scenario. An empty string has been always returned in xml2 in this case, based on the history of the module, so this is an old issue. Reported-by: Alexander Lakhin <exclusion@gmail.com> Discussion: https://postgr.es/m/c516a0d9-4406-47e3-9087-5ca5176ebcf9@gmail.com Backpatch-through: 14		2 months ago
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expected	xml2: Fix failure with xslt_process() under -fsanitize=undefined	2 months ago
sql	xml2: Fix failure with xslt_process() under -fsanitize=undefined	2 months ago
.gitignore	Support "make check" in contrib	15 years ago
Makefile	Remove support for upgrading extensions from "unpackaged" state.	6 years ago
xml2--1.0--1.1.sql	Update xml2 extension for parallel query.	10 years ago
xml2--1.1.sql	Update xml2 extension for parallel query.	10 years ago
xml2.control	Remove support for upgrading extensions from "unpackaged" state.	6 years ago
xpath.c	Fix incompatibility with libxml2 >= 2.14	10 months ago
xslt_proc.c	xml2: Fix failure with xslt_process() under -fsanitize=undefined	2 months ago