Serhiy Storchaka added the comment:
These were not idle questions. I wrote the patch, and I had to know what
behavior is correct.
Here's the patch. It fixes potential memory bug (unconsumed_tail sets to NULL
in case of out of memory), resets the unconsumed_tail to b'' after EOF, updates
unconsumed_tail and unused_data in flush().
I a little changed test for the previous case (here was O(N^2) for large data).
I checked it on non-fixed Python, bug was catched.
stage: committed/rejected -> patch review
status: closed -> open
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