[GHC] #10626: Missed opportunity for SpecConstr

[GHC]

#10626: Missed opportunity for SpecConstr
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        Reporter:  simonpj           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dsc):

 Thank you very much! Avoiding the `snd` indeed fixes it in this case, and
 I'll also keep problem 1 in mind.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10626#comment:6>
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