[tor-bugs] #8042 [Tor]: Reloaded md never be purged for platforms with unsigned time_t

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#8042: Reloaded md never be purged for platforms with unsigned time_t
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 Reporter:  cypherpunks  |          Owner:                    
     Type:  defect       |         Status:  new               
 Priority:  normal       |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor          |        Version:                    
 Keywords:  easy         |         Parent:                    
   Points:               |   Actualpoints:                    
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Comment(by rransom):

 POSIX (as of the 2003 edition) does not require that `time_t` be signed,
 but does use `(time_t)-1` as a return value indicating an error.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8042#comment:2>
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