Passing an empty list to read_csv causes segmentation fault

[santhisenan]

To reproduce the issue

Create a virtual environment with python 3.8.9 (same behaviour in 3.9.1 also). Install pandas using pip install pandas. Run pd.read_csv([]) after importing pandas.

>>> python
Python 3.8.9 (default, Aug 21 2021, 15:53:23) 
[Clang 13.0.0 (clang-1300.0.29.3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas as pd
>>> pd.read_csv([])
fish: Job 1, 'python' terminated by signal SIGSEGV (Address boundary error)

Expected behaviour

Throw and error and exit gracefully. Currently, the python process is crashing.

Versions

OS: MacOS Big Sur 11.6
Python version 3.9.1

Output of pip freeze:

numpy==1.22.2
pandas==1.4.0
python-dateutil==2.8.2
pytz==2021.3
six==1.16.0

Running pd.show_versions() throws the following error, probably related to #44980

>>> import pandas as pd
>>> pd.show_versions()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/pandas/util/_print_versions.py", line 109, in show_versions
    deps = _get_dependency_info()
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/pandas/util/_print_versions.py", line 88, in _get_dependency_info
    mod = import_optional_dependency(modname, errors="ignore")
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/pandas/compat/_optional.py", line 126, in import_optional_dependency
    module = importlib.import_module(name)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 790, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/setuptools/__init__.py", line 8, in <module>
    import _distutils_hack.override  # noqa: F401
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/_distutils_hack/override.py", line 1, in <module>
    __import__('_distutils_hack').do_override()
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/_distutils_hack/__init__.py", line 71, in do_override
    ensure_local_distutils()
  File "/Users/santhisenan/.local/share/virtualenvs/pd_versions-uc_eBlwP/lib/python3.9/site-packages/_distutils_hack/__init__.py", line 59, in ensure_local_distutils
    assert '_distutils' in core.__file__, core.__file__
AssertionError: /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/core.py

[profMsaif]

the problem is in this files
c_parser_wrappe.py
which use parsers.pyi
[76]: self._reader = parsers.TextReader(src, **kwds)
src must be an io.TextOWWrapper
and it will crash if you passed any other object such as dict set or even a str
how ever this shouln't happen as it should throw a ValueError

the issue is in readers.py

[1213] --> if not isinstance(f, list):
# code for handling the file
# validating the typee ..ect

suggesions-->
remove this line and unindent the body of if statment
f value file_or_path shouldn't be a list object

[simonjayhawkins]

NOTE: before #45389 the ValueError was raised in _get_filepath_or_buffer

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
/tmp/ipykernel_27570/1861184160.py in <module>
----> 1 pd.read_csv([])

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/util/_decorators.py in wrapper(*args, **kwargs)
    309                     stacklevel=stacklevel,
    310                 )
--> 311             return func(*args, **kwargs)
    312 
    313         return wrapper

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/parsers/readers.py in read_csv(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, skipfooter, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, cache_dates, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, doublequote, escapechar, comment, encoding, encoding_errors, dialect, error_bad_lines, warn_bad_lines, on_bad_lines, delim_whitespace, low_memory, memory_map, float_precision, storage_options)
    584     kwds.update(kwds_defaults)
    585 
--> 586     return _read(filepath_or_buffer, kwds)
    587 
    588 

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/parsers/readers.py in _read(filepath_or_buffer, kwds)
    480 
    481     # Create the parser.
--> 482     parser = TextFileReader(filepath_or_buffer, **kwds)
    483 
    484     if chunksize or iterator:

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/parsers/readers.py in __init__(self, f, engine, **kwds)
    809             self.options["has_index_names"] = kwds["has_index_names"]
    810 
--> 811         self._engine = self._make_engine(self.engine)
    812 
    813     def close(self):

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/parsers/readers.py in _make_engine(self, engine)
   1038             )
   1039         # error: Too many arguments for "ParserBase"
-> 1040         return mapping[engine](self.f, **self.options)  # type: ignore[call-arg]
   1041 
   1042     def _failover_to_python(self):

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/parsers/c_parser_wrapper.py in __init__(self, src, **kwds)
     49 
     50         # open handles
---> 51         self._open_handles(src, kwds)
     52         assert self.handles is not None
     53 

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/parsers/base_parser.py in _open_handles(self, src, kwds)
    220         Let the readers open IOHandles after they are done with their potential raises.
    221         """
--> 222         self.handles = get_handle(
    223             src,
    224             "r",

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/common.py in get_handle(path_or_buf, mode, encoding, compression, memory_map, is_text, errors, storage_options)
    607 
    608     # open URLs
--> 609     ioargs = _get_filepath_or_buffer(
    610         path_or_buf,
    611         encoding=encoding,

~/miniconda3/envs/pandas-1.3.5/lib/python3.10/site-packages/pandas/io/common.py in _get_filepath_or_buffer(filepath_or_buffer, encoding, compression, mode, storage_options)
    394     if not is_file_like(filepath_or_buffer):
    395         msg = f"Invalid file path or buffer object type: {type(filepath_or_buffer)}"
--> 396         raise ValueError(msg)
    397 
    398     return IOArgs(

ValueError: Invalid file path or buffer object type: <class 'list'>