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Unbounded C recursion in _elementtree.Element.__deepcopy__ causes causes stack overflow #148801
Description
Crash report
What happened?
Many thanks to Gil Portnoy (@dhkts1) for finding this.
import xml.etree.ElementTree as ET
import sys
import copy
root = ET.Element("r")
cur = root
for i in range(500_000):
c = ET.Element("n")
cur.append(c)
cur = c
copy.deepcopy(root) # SIGSEGVCPython versions tested on:
CPython main branch
Operating systems tested on:
No response
Output from running 'python -VV' on the command line:
No response
Activity
gh-148801: Fix unbound C recursion in `Element.__deepcopy__()` (#148802)
[3.14] gh-148801: Fix unbound C recursion in `Element.__deepcopy__()` (…
pythongh-148801: Fix unbound C recursion in `Element.__deepcopy__()` (p…
[3.13] gh-148801: Fix unbound C recursion in `Element.__deepcopy__()` (…