#62937·pandas

BUG: rolling().corr() crash with time period

Author: kostayScrCreated Oct 31, 2025Updated Sep 17, 2026
LabelsBugWindowSegfault

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

import numpy as np
import pandas as pd

dateRange = pd.date_range("2000-1-1", "2010-1-1", 200000)
dateRange2 = dateRange[::33]
src = pd.DataFrame( columns={"0": np.random.normal(size=6000)}, index=dateRange2 )
arg = pd.Series(np.random.normal(size=200000), index=dateRange)
print(src)
print(arg)

for i in range(100):
    src.iloc[:, 0].rolling("100D").corr(arg)
    #src.iloc[:, 0].rolling(10000).corr(arg) #no crash

Issue Description

Rolling corr with wrong dimensions causes a crash, not a python exception.

Expected Behavior

Python exception or some result.

Installed Versions

INSTALLED VERSIONS

commit : 9c8bc3e55188c8aff37207a74f1dd144980b8874 python : 3.13.3 python-bits : 64 OS : Windows OS-release : 10

pandas : 2.3.3 numpy : 2.3.4 pytz : 2025.2 dateutil : 2.9.0.post0 pip : 25.0.1 Cython : None sphinx : None IPython : None adbc-driver-postgresql: None adbc-driver-sqlite : None bs4 : None blosc : None bottleneck : None dataframe-api-compat : None fastparquet : None fsspec : None html5lib : None hypothesis : None gcsfs : None jinja2 : None lxml.etree : None matplotlib : None numba : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None psycopg2 : None pymysql : None pyarrow : None pyreadstat : None pytest : None python-calamine : None pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlsxwriter : None zstandard : None tzdata : 2025.2 qtpy : None pyqt5 : None