[tor-bugs] #19220 [Core Tor/Tor]: Do not override Makefile user variables

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#19220: Do not override Makefile user variables
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 Reporter:  cypherpunks   |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Low           |      Milestone:
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  gcc-warnings  |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Changes (by nickm):

 * keywords:   => gcc-warnings


Comment:

 Sounds like a good idea to me, but we watch out: there's actually a couple
 of cases where that approach won't work.  In any case where the warning
 triggers on the default autoconf test program, we'll get a false negative
 given the way that our CHECK_CFLAGS macro works now.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19220#comment:1>
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