Add PyExc_OverflowError to the list of possible exceptions in fuzz_ast_literal_eval fuzzer

[StanFromIreland]

This fixes the "bug" found in https://oss-fuzz.com/testcase-detail/5450638250278912.

>>> import ast
... data = open('/tmp/testcase', 'rb').read()
... ast.literal_eval(data[:data.index(0)].decode())
... 
<python-input-2>:2: ResourceWarning: unclosed file <_io.BufferedReader name='/tmp/testcase'>
ResourceWarning: Enable tracemalloc to get the object allocation traceback
Traceback (most recent call last):
  File "<python-input-2>", line 3, in <module>
    ast.literal_eval(data[:data.index(0)].decode())
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/stan/dev/cpython/Lib/ast.py", line 64, in literal_eval
    return _convert_literal(node_or_string)
  File "/home/stan/dev/cpython/Lib/ast.py", line 108, in _convert_literal
    return left + right
           ~~~~~^~~~~~~
OverflowError: int too large to convert to float

With fuzzer

Currently:

$ ./python -c "
import _xxtestfuzz
data = open('/tmp/testcase', 'rb').read()
_xxtestfuzz.run(data)
"
<string>:3: ResourceWarning: unclosed file <_io.BufferedReader name='/tmp/testcase'>
ResourceWarning: Enable tracemalloc to get the object allocation traceback
Traceback (most recent call last):
  File "/home/stan/dev/cpython/Lib/ast.py", line 64, in literal_eval
    return _convert_literal(node_or_string)
  File "/home/stan/dev/cpython/Lib/ast.py", line 108, in _convert_literal
    return left + right
           ~~~~~^~~~~~~
OverflowError: int too large to convert to float
Aborted (core dumped)

With fix:

$ ./python -c "
import _xxtestfuzz
data = open('/tmp/testcase', 'rb').read()
_xxtestfuzz.run(data)
"
<string>:3: ResourceWarning: unclosed file <_io.BufferedReader name='/tmp/testcase'>
ResourceWarning: Enable tracemalloc to get the object allocation traceback

[ammaraskar]

Looks good to ignore this, we don't particularly care about overflow here.

[hugovk]

Let's backport this?

Failing CIFuzz doesn't block merge but is often distracting, for example #158015 on 3.13.

[miss-islington-app]

Thanks @StanFromIreland for the PR, and @encukou for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖 I'm not a witch! I'm not a witch!

[miss-islington-app]

Thanks @StanFromIreland for the PR, and @encukou for merging it 🌮🎉.. I'm working now to backport this PR to: 3.15.
🐍🍒⛏🤖

[miss-islington-app]

Thanks @StanFromIreland for the PR, and @encukou for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

[bedevere-app]

GH-158083 is a backport of this pull request to the 3.13 branch.

[bedevere-app]

GH-158084 is a backport of this pull request to the 3.14 branch.

[StanFromIreland]

Personally, I'd rather remove them from the CI on those branches entirely, but this is fine in the meantime.