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Dridi Boukelmoune authored
The opposite of 'EXP_Ttl(req, oc) > req->t_req' should not have been 'EXP_Ttl(NULL, oc) < req->t_req'. If we somehow enter the lookup when the two operands are equal, the objcore suffers a phenomenon known as Schrödinger's expiry. The chances of running into this scenario range from epsilon to 100%. Because 't_req' is stable across restarts, a soft purge will reliably trigger this case. Test case by Alve Elde who first demonstrated the problem.
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