Bug report

Bug description:

I'm working on the Python Profiler at Datadog and while looking at how Tachyon is implemented, I noticed that I believe this error path is missing a call to PyErr_Format. This probably rarely happens (it would require the process to read corrupt memory) but I still think it's worth fixing.

I have a branch that adds the call if you're OK with adding it.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS