[tor-bugs] #19931 [Core Tor/Tor]: curve25519-donna runtime math errors on armhf

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#19931: curve25519-donna runtime math errors on armhf
-------------------------------------------------+-------------------------
 Reporter:  chadmiller                           |          Owner:
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.2.???
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.2.8.6
 Severity:  Normal                               |     Resolution:
 Keywords:  regression, integer-overflow,        |  Actual Points:
  029-proposed                                   |
Parent ID:                                       |         Points:  0.5
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by cypherpunks):

 Replying to [comment:4 teor]:
 > This looks like a gcc bug where it doesn't implement -fwrapv correctly
 on your platform. (Or, at least, it implements it in a way that still
 results in warnings.)

 That seems unlikely. fwrapv and ftrapv can override each other, it's much
 more likely that the compiler options are not right.

 @chadmiller:
 If you run your build with "make V=1", you get to see the actual compiler
 options.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19931#comment:5>
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