Fix #19491, crash when using enable_error_code value of wrong type in pyproject.toml #19494
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sterliakov
reviewed
Jul 25, 2025
Co-authored-by: Stanislav Terliakov <50529348+sterliakov@users.noreply.github.com>
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The fact that we're now raising an error instead of allowing the value to go through and yet the test apparently still passes makes me wonder if the test is wrong. Or maybe I just got lucky and the implications of raising an error result in the same error message and thus pass the test the same way. |
sterliakov
suggested changes
Jul 30, 2025
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
This was referenced Jul 31, 2025
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Fixes #19491
If you give a string in toml, you get Invalid error code(s): whatever. However, if you give a value that doesn't mean a string in toml, you get a crash like TypeError: 'int' object is not iterable.
I suspect this would also apply to many other pyproject.toml values if you set them wrong, because we pass many of them immediately into try_split, which tries to iterate them.
I have added a (fairly minimal) test for this behavior.