[tor-bugs] #16366 [Tor]: tor hangs for 30 seconds when parsing torrc ending in backslash-newline

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#16366: tor hangs for 30 seconds when parsing torrc ending in backslash-newline
--------------------+------------------------------
 Reporter:  teor    |          Owner:
     Type:  defect  |         Status:  new
 Priority:  minor   |      Milestone:  Tor: 0.2.???
Component:  Tor     |        Version:  Tor: 0.2.6.8
 Keywords:  lorax   |  Actual Points:
Parent ID:          |         Points:
--------------------+------------------------------
 When parsing torrc files that end in backslash then newline, tor hangs for
 approximately 30 seconds.

 Examples:
 {{{
 ORPort \

 }}}
 {{{
 HTTPProxy \

 }}}

 I have confirmed this issue in tor 0.2.6.8 and tor 0.2.7.1-alpha.

 Note:
 * the eventual result is still a failed parse, which is correct
 * the issue is of delay/annoyance value at best
 * triggering the issue requires access to torrc

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16366>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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