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BytesIO.write() at a position near sys.maxsize raised SystemError
("Negative size passed to PyBytes_FromStringAndSize") because the
overallocated buffer size could exceed PY_SSIZE_T_MAX. Check the
computed allocation, not only the requested size.
BytesIO.truncate() converted its argument with PyLong_AsLong(), which
rejects sizes above 2**31 - 1 on Windows where C long is 32-bit. Use
PyNumber_AsSsize_t() like the Py_ssize_t Argument Clinic converter it
used before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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BytesIO.write() at a position near sys.maxsize raised SystemError ("Negative size passed to PyBytes_FromStringAndSize") because the overallocated buffer size could exceed PY_SSIZE_T_MAX. Check the computed allocation, not only the requested size.
BytesIO.truncate() converted its argument with PyLong_AsLong(), which rejects sizes above 2**31 - 1 on Windows where C long is 32-bit. Use PyNumber_AsSsize_t() like the Py_ssize_t Argument Clinic converter it used before.