Add check on cache length when purging entries#68
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athum wants to merge 1 commit intoabbot:masterfrom
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Jun 19, 2020
| limit := count | ||
| if len(cache) < count { | ||
| limit = len(cache) - 1 | ||
| } |
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If I understand the issue correctly, when Purge is called with count >= len(cache), this triggers a panic because of the range. I think an easier fix would be to just empty the entire cache in this case, right after grabbing a lock, because this is what I think this code effectively does. Or am I missing something?
Also, can you please add a test for this edge case?
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@abbot sorry for the delayed response - you are correct! I think the current count parameter is to only clear the cache up to a certain point - is this something that can be removed in favor of clearing the entire cache?
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Moved to #70. |
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When the authenticator's cache is purged, there was a consistent
slice bounds out of range [:200] with capacity 181panic occurring. Checking that thecountvariable here does not exceed the actual length of the cache should avoid this panic when the cache is purged.