Some test and general fixes#588
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The arena was reused when it shouldn't after a Release() call.
In the future, it would be ideal if wrongful Release() calls could be flagged (either through an error or panic).
This moves the check for released messages earlier in the Release() call for transport messages. This prevents triggering the race detector, due to the check happening before an attempt is made at accessing the message (which involves indirection through a segment that may have been released already). While the prior code would not have actually caused a fault in current code (because the conditional checks both for the released flag and whether the message is nil), checking by the release flag first is more correct and may prevent future bugs.
Previously this was not enforced by the Encode function. While this limit is unlikely to be hit in practice, it's important to assert it due to the type allowing it and a count of segments greater than 2^32 causing an invalid marshaling.
lthibault
approved these changes
Aug 20, 2024
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Cherry-picked from #586.
That PR has uncovered more races, so I'm trying again with a different approach to eliminate them.
The commits that were unrelated to the actual refactor are in this PR to ease the future efforts.