fix: fuzz test timeout on pathological inputs#2981
Merged
Conversation
FuzzParseTypeAnnotation occasionally times out in CI because the fuzzer finds pathologically long/nested type strings that make tree-sitter exceed the per-worker grace period. Cap inputs at 1 KB (type annotations) and 64 KB (full source) so slow inputs are skipped instead of causing the fuzz run to fail.
Contributor
|
LGTM |
markphelps
approved these changes
May 1, 2026
This file contains hidden or 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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
FuzzParseTypeAnnotation occasionally times out in CI -- the fuzzer finds a deeply nested or long type string that makes tree-sitter chew for longer than the per-worker grace period, and the whole run fails with "context deadline exceeded."
Cap inputs at 1 KB for type annotations and 64 KB for full source. Pathological inputs get skipped instead of hanging the run. Real Python source and type annotations are well within these bounds.