[GHC] #9938: cryptarithm2 fails with undefined reference to `transzuH9c1w14lEUN3zzdWCTsn8jG_ControlziMonadziTransziStateziLazzy_zdwzdcp0Alternative_info'

[GHC]

#9938: cryptarithm2 fails with undefined reference to
`transzuH9c1w14lEUN3zzdWCTsn8jG_ControlziMonadziTransziStateziLazzy_zdwzdcp0Alternative_info'
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        Reporter:  nomeata           |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by nomeata):

 > I don't understand how changing the order of the cases in solve could
 affect anything, and I also can't reproduce it here.

 Right, I can’t either.

 But when I pass `-O2`, I can! I added the other variant as a separate test
 case. Maybe the successful compilation of that is the bug? I hope that
 successful linking should not depend on the particular optimizations that
 went through.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9938#comment:4>
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