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Description
Crash report
What happened?
The interpreter will abort ifrunpy._run_module_code is called with invalid values:
importrunpyrunpy._run_module_code("A", {0:""},"")
Another way to trigger:
classParent:def__dir__(self):return [0]classWithNonStringAttrs(Parent):blech=NoneWithNonStringAttrs().bluch
Abort message:
python: Objects/unicodeobject.c:10799: _PyUnicode_Equal: Assertion `PyUnicode_Check(str2)' failed.Aborted (core dumped)The suggestions machinery is the source of the issue, withcalculate_suggestions calling_PyUnicode_Equal(name, item) for an item that might not be unicode.
Only aborts in 3.12. In 3.13 and main it results in an error in the traceback machinery:
Exception ignored in the internal traceback machinery:Traceback (most recent call last): File "/home/danzin/projects/upstream_cpython/Lib/traceback.py", line 139, in _print_exception_bltin return print_exception(exc, limit=BUILTIN_EXCEPTION_LIMIT, file=file, colorize=colorize) File "/home/danzin/projects/upstream_cpython/Lib/traceback.py", line 129, in print_exception te = TracebackException(type(value), value, tb, limit=limit, compact=True) File "/home/danzin/projects/upstream_cpython/Lib/traceback.py", line 1090, in __init__ suggestion = _compute_suggestion_error(exc_value, exc_traceback, wrong_name) File "/home/danzin/projects/upstream_cpython/Lib/traceback.py", line 1531, in _compute_suggestion_error return _suggestions._generate_suggestions(d, wrong_name)TypeError: all elements in 'candidates' must be strings[...]Will submit a PR shortly.
CPython versions tested on:
3.12
Operating systems tested on:
Linux
Output from running 'python -VV' on the command line:
Python 3.12.8+ (heads/3.12:580d7810946, Feb 2 2025, 01:56:47) [GCC 13.3.0]