I'm seeing something very similiar, and it's very frustrating.
I've attached the relevant portion from the output of
valgrind --leak-check=full --trace-children=yes make test
with only 40reader_mem_error.t in t/
perl is 5.16.3, compiled from scratch just an hour ago, with only default settings, no threads etc. I changed the prefix, that's all
XML::LibXML version is 2.0014.
The server is running Red Hat Enterprise Linux Server release 5.9 (Tikanga).
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