[tor-bugs] #18895 [Core Tor/Tor]: --enable-expensive-hardening has hard-to-debug failures when run-time libraries aren't installed

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#18895: --enable-expensive-hardening has hard-to-debug failures when run-time
libraries aren't installed
------------------------------+--------------------------
     Reporter:  nickm         |      Owner:
         Type:  defect        |     Status:  new
     Priority:  High          |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  029-proposed
Actual Points:                |  Parent ID:
       Points:  small         |   Reviewer:
      Sponsor:  SponsorS-can  |
------------------------------+--------------------------
 If libabsan or libubsan or libclang_rt.asan or libclang_rt.ubsan is
 missing, and you try to build with --enable-expensive-hardening, then the
 autoconf scripts will generate an orconfig.h file that doesn't allow Tor
 to compile.

 What we should probably do here is warn about the missing libraries when
 --enable-expensive-hardening is in use but the runtime libraries are not
 present.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18895>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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