[tor-bugs] #17151 [Tor]: FreeBSD: fix test_bt failures

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#17151: FreeBSD: fix test_bt failures
------------------------+--------------------------------
     Reporter:  saper   |      Owner:
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:  Tor: 0.2.???
    Component:  Tor     |    Version:  Tor: 0.2.7.2-alpha
   Resolution:          |   Keywords:  build
Actual Points:          |  Parent ID:
       Points:          |
------------------------+--------------------------------

Comment (by saper):

 assert backtrace seems correct:

 {{{
  ./src/test/test-bt-cl assert
 Sep 25 00:02:12.516 [err] void tor_assertion_failed_(const char *,
 unsigned int, const char *, const char *): Bug: src/test/test_bt_cl.c:42:
 crash: Assertion 1 == 0 failed; aborting. (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug: Assertion 1 == 0 failed in crash at
 src/test/test_bt_cl.c:42. Stack trace: (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c5e8 <log_backtrace+0x48> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x1039a07 <tor_assertion_failed_+0x97>
 at /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c2fd <crash+0x6d> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c32f <oh_what+0x1f> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c37f <a_tangled_web+0x1f> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c3cf <we_weave+0x1f> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c512 <main+0x112> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 Sep 25 00:02:12.517 [err] Bug:     0x102c1a1 <_start+0x1a1> at
 /home/saper/sw/tor/src/test/test-bt-cl (on Tor 0.2.7.3-rc
 06cc9a9a2db2c32f)
 }}}

 But "crash" backtrace is truncated

 {{{
 ============================================================ T= 1443139367
 Tor  died: Caught signal 11
 0x102c9dd <clean_up_backtrace_handler+0x8d> at /home/saper/sw/tor/src/test
 /test-bt-cl
 0x8016a8997 <pthread_sigmask+0x497> at /lib/libthr.so.3
 0x102c2b0 <crash+0x20> at /home/saper/sw/tor/src/test/test-bt-cl

 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17151#comment:2>
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