[GHC] #3027: Specialisation rules fail because dictionary projections do not match

[GHC]

#3027: Specialisation rules fail because dictionary projections do not match
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    Reporter:  malcolm.wallace at cs.york.ac.uk  |        Owner:                  
        Type:  bug                            |       Status:  closed          
    Priority:  normal                         |    Milestone:                  
   Component:  Compiler                       |      Version:  6.8.2           
    Severity:  normal                         |   Resolution:  fixed           
    Keywords:                                 |   Difficulty:  Unknown         
    Testcase:                                 |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple               |  
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Comment (by malcolm.wallace at cs.york.ac.uk):

 The currently-attached archive is a cut-down version of the real code,
 intended only to show the bug in the core output.  The full code that can
 be used to illustrate the performance differences requires several extra
 packages (OpenGL, smallcheck, polyparse), plus some large datasets.  Sorry
 I have not recently had the time to collect all these materials together
 so that you can reproduce it.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3027#comment:6>
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