[tor-bugs] #18373 [Tor]: Trunnel can generate memcpy(p,NULL,0)

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#18373: Trunnel can generate memcpy(p,NULL,0)
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     Reporter:  nickm   |      Owner:
         Type:  defect  |     Status:  new
     Priority:  Medium  |  Milestone:  Tor: 0.2.8.x-final
    Component:  Tor     |    Version:
     Severity:  Minor   |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |    Sponsor:
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 Passing a null pointer to memcpy is undefined behavior, even when the
 length is zero.  Trunnel could try to do this when serializing an empty
 dynamic-length array.  Still, undefined behavior is bad.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18373>
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