gh-129573: Fix possible abort from non-string suggestions in calculate_suggestions/_Py_CalculateSuggestions
#130997
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
picnixz
added
needs backport to 3.12
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR adds a simple check that suggestion candidates are strings in
calculate_suggestions(3.12)/_Py_CalculateSuggestions(main), avoiding an abort in debug builds from code like below:The abort only happens in 3.12, because the code in main checks for non-string candidates in
_suggestions__generate_suggestions_impl. However, since the affected code is still present in main, this PR is against that branch.In main, the code above exits the new REPL, which will be reported as a new issue with associated PR.
Found using fusil by @vstinner.
_PyUnicode_Equalfromcalculate_suggestionswith non-string candidate #129573