On 2019-10-04 20:32, Geoff Bache wrote:
Hi all,
We are running Python embedded in our C++ product and are now experiencing
crashes (access violation reading 0xffffffffff on Windows) in the Python
garbage collector.
We got this on Python 3.6.4 originally, but I can reproduce it with both
Python 3.6.8 and Python 3.7.4.
The chances of producing a minimal example that reproduces it reliably are
currently small I would say. All attempts to simplify the set up seem to
cause the problem to go away.
Indeed I can only reproduce it by sending a fairly large amount of data 2
or 3 times to our server - sending either half of the data does not
reproduce it.
[snip]
In my experience, it's most likely caused by incorrect refcounting,
DECREFing too many times.
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