[tor-bugs] #8477 [Tor]: connection_ap_expire_beginning(): Bug: circuit->purpose == CIRCUIT_PURPOSE_C_GENERAL failed. The purpose on the circuit was UNKNOWN_20

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#8477: connection_ap_expire_beginning(): Bug: circuit->purpose ==
CIRCUIT_PURPOSE_C_GENERAL failed. The purpose on the circuit was UNKNOWN_20
-------------------------+--------------------------------------------------
 Reporter:  cypherpunks  |          Owner:  mikeperry         
     Type:  defect       |         Status:  assigned          
 Priority:  normal       |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor          |        Version:                    
 Keywords:  tor-client   |         Parent:                    
   Points:               |   Actualpoints:                    
-------------------------+--------------------------------------------------

Comment(by mikeperry):

 As I said in #8065, my read of the code lead me to believe this log
 message can happen for both CIRCUIT_PURPOSE_PATH_BIAS_TESTING and
 CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT. As those were both formerly
 PURPOSE_GENERAL circuits that could still have streams on them in various
 cases, I think we should just exempt them from the warn here.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8477#comment:3>
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