Fix a flaky test failure in getentropy.c#398
Merged
alexcrichton merged 1 commit intoMar 9, 2024
Merged
Conversation
This test looks to be asserting that `getrandom` never returns 256 consecutive zeros, but the way it's asserting that is summing up the bytes and asserting the sum is nonzero. Due to this being a signed addition, however, it's possible for the bytes to be nonzero and still trigger the assert. Locally running this test in a loop took 30 or so seconds before it triggered a failure. I've updated the test to instead hunt for any entry which is not equal to zero and then assert that something is not zero.
sbc100
approved these changes
Mar 9, 2024
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
This test looks to be asserting that
getrandomnever returns 256 consecutive zeros, but the way it's asserting that is summing up the bytes and asserting the sum is nonzero. Due to this being a signed addition, however, it's possible for the bytes to be nonzero and still trigger the assert. Locally running this test in a loop took 30 or so seconds before it triggered a failure.I've updated the test to instead hunt for any entry which is not equal to zero and then assert that something is not zero.