memory corruption on PyPy

[Brecht Machiels]

Running citeproc-py on pypy (2.6.1 on OS X and 2.5.0 on Linux) with lxml 3.4.4 (also tried 3.5.0b1 and 3.0) crashes due to memory corruption:

pypy(57478,0x7fff7a64a000) malloc: *** error for object 0x10484d178: incorrect checksum for freed object - object was probably modified after being freed.

or sometimes

Segmentation fault: 11

This occurs during a call to lxml.etree.ElementBase.find().

I tried creating a minimal script to reproduce, but failed. Steps to reproduce:

pip install lxml
pip install citeproc-py==0.3.0
wget https://raw.githubusercontent.com/brechtm/citeproc-py/v0.3.0/examples/bibtex.py
wget https://raw.githubusercontent.com/brechtm/citeproc-py/v0.3.0/examples/xampl.bib
pypy bibtex.py

PyPy might be the originator of this bug, but I don't know how to determine this.

[scoder (scoder)]

Closing as outdated and not a bug in lxml. Probably fixed by a newer PyPy version.