[tor-bugs] #9299 [Tor]: Dump stack traces on assertion, crash, or general trouble

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#9299: Dump stack traces on assertion, crash, or general trouble
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 Reporter:  nickm                |          Owner:                    
     Type:  enhancement          |         Status:  new               
 Priority:  normal               |      Milestone:  Tor: 0.2.5.x-final
Component:  Tor                  |        Version:                    
 Keywords:  tor-relay debugging  |         Parent:                    
   Points:                       |   Actualpoints:                    
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 It's so easy to dump stack traces these days!

 I have a "backtrace" branch right now that an dump stack traces on
 assertion failures.  It works on glibc/ELF, and on OSX.  We should expand
 it to work on Windows too, and BSD if we can.

 Other fixes to make before it's ready:
   * It should be able to log a stack trace too.
     * It should log the stack trace on an assertion.
   * There should be an option to tell it not to log to the stack_dumps
 file, perhaps.
   * Perhaps the logfile should be pid-controlled?
   * It should support Windows.
   * It should handle deadly signals (SEGV, etc) as well.
   * It should indicate to the user somehow (if it can) that stuff might be
 saved to the stack_dumps file.
   * It should have tests.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9299>
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