[issue44895] refleak test failure in test_exceptions

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

> But this makes it not leak again, so now we know it's the traceback:

The traceback is a very heavy gc object because it contains the frames, and in the locals of the frame is the traceback itself via the exception. This is a well known heavy cycle, but the gc should take care of it if the cycle becomes isolated

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