[tor-bugs] #22926 [Core Tor/Tor]: The Tor compression code can call functions that are NULL

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#22926: The Tor compression code can call functions that are NULL
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 Reporter:  teor          |          Owner:  ahf
     Type:  defect        |         Status:  assigned
 Priority:  Medium        |      Milestone:  Tor: 0.3.1.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.1.1-alpha
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:  1
 Reviewer:                |        Sponsor:
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Comment (by ahf):

 This is going to be an issue for all external dependencies that we use via
 pkg-config I think. The old `TOR_SEARCH_LIBRARY()` macro is probably
 unaffected since it tries to build a small test file.

 I will try to do the same as we do in `TOR_SEARCH_LIBRARY()` when the
 library is found to ensure that we can link against the .so and that the
 headers are present.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22926#comment:3>
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