[tor-bugs] #20560 [Core Tor/Tor]: Some unit tests fail when logging messages on Windows / MinGW64

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#20560: Some unit tests fail when logging messages on Windows / MinGW64
------------------------------+--------------------------
     Reporter:  teor          |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.2.???
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  029-proposed
Actual Points:                |  Parent ID:
       Points:  1             |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------
 A Windows / MinGW64 user sees the following errors in the unit tests:
 {{{
 circuit_timeout: [forking] Nov 03 15:52:03.329 [err] tor_asprintf(): Bug:
 Internal error in asprintf (on Tor 0.2.9.4-alpha-dev 8f465808a06c739d)
 Nov 03 15:52:03.329 [err] tor_assertion_failed_(): Bug: compat.c:515:
 tor_asprintf: Assertion 0 failed; aborting. (on Tor 0.2.9.4-alpha-dev
 8f465808a06c739d)
 Nov 03 15:52:03.329 [err] Bug: Assertion 0 failed in tor_asprintf at
 compat.c:515. (Stack trace not available) (on Tor 0.2.9.4-alpha-dev
 8f465808a06c739d)
 OK
 rend_fns: [forking] OK
 geoip: Nov 03 15:52:11.920 [err] tor_asprintf(): Bug: Internal error in
 asprintf (on Tor 0.2.9.4-alpha-dev 8f465808a06c739d)
 Nov 03 15:52:11.920 [err] tor_assertion_failed_(): Bug: compat.c:515:
 tor_asprintf: Assertion 0 failed; aborting. (on Tor 0.2.9.4-alpha-dev
 8f465808a06c739d)
 Nov 03 15:52:11.920 [err] Bug: Assertion 0 failed in tor_asprintf at
 compat.c:515. (Stack trace not available) (on Tor 0.2.9.4-alpha-dev
 8f465808a06c739d)
 This application has requested the Runtime to terminate it in an unusual
 way.
 Please contact the application's support team for more information.
 make: *** [test] Error 3
 }}}


 https://trac.torproject.org/projects/tor/attachment/ticket/20530/test-
 output-fmp.txt

 Split off from #20530.
 This is probably happening due to #19999.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20560>
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