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While working on reproducible builds for openSUSE (sponsored by the NLnet NGI0 fund), I found that
our python-pandas 2.2.2 and 2.2.3 (also seen in pandas-2.0.2, possibly also earlier versions) vary
in the generated pandas/_libs/tslibs/timedeltas.pyx.c file.
The reproducer only produces 30 times the same hash with the setarch -R to disable ASLR.
Without it, you get a random chance for two different results.
The probability also seems to depend on the length of the path string.
Pandas version checks
I have checked that this issue has not already been reported.
I have confirmed this bug exists on the latest version of pandas.
I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
Issue Description
While working on reproducible builds for openSUSE (sponsored by the NLnet NGI0 fund), I found that
our python-pandas 2.2.2 and 2.2.3 (also seen in pandas-2.0.2, possibly also earlier versions) vary
in the generated
pandas/_libs/tslibs/timedeltas.pyx.c
file.The reproducer only produces 30 times the same hash with the
setarch -R
to disable ASLR.Without it, you get a random chance for two different results.
The probability also seems to depend on the length of the path string.
Using
diff -u9 pyx.c.[7a]*
the diff of those files is
Expected Behavior
Build results should be deterministic.
Installed Versions
openSUSE Tumbleweed 20241018
Cython-3.0.11
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