[tor-bugs] #19406 [Core Tor/Tor]: OpenSSL 1.1.0pre5 breaks with maint-0.2.8

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#19406: OpenSSL 1.1.0pre5 breaks with maint-0.2.8
-------------------------------------------------+-------------------------
 Reporter:  nickm                                |          Owner:  yawning
     Type:  defect                               |         Status:
 Priority:  High                                 |  assigned
Component:  Core Tor/Tor                         |      Milestone:  Tor:
 Severity:  Normal                               |  0.2.8.x-final
 Keywords:  TorCoreTeam201606 must-fix-          |        Version:
  before-028-rc                                  |     Resolution:
Parent ID:                                       |  Actual Points:
 Reviewer:                                       |         Points:  1
                                                 |        Sponsor:
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Comment (by yawning):

 https://git.schwanenlied.me/yawning/tor/src/bug19406 (against maint-028)

 This will never build cleanly against 1.1.0pre5 wiht -Werror (master is
 also broken):
 {{{
 In file included from
 /opt/openssl-1.1.0-pre5/include/openssl/x509.h:363:0,
                  from /opt/openssl-1.1.0-pre5/include/openssl/pem.h:65,
                  from ../src/tools/tor-gencert.c:17:
 /opt/openssl-1.1.0-pre5/include/openssl/x509_vfy.h:379:6: warning:
 redundant redeclaration of ‘X509_STORE_CTX_set_verify_cb’ [-Wredundant-
 decls]
  void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
 /opt/openssl-1.1.0-pre5/include/openssl/x509_vfy.h:312:6: note: previous
 declaration of ‘X509_STORE_CTX_set_verify_cb’ was here
 }}}

 The thread API has changed again since 1.1.0pre5 was released too.  Since
 it's in cleanup code, I'm opting to go with master (aka 1.1.0pre6-dev)
 behavior.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19406#comment:3>
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