[GHC] #6040: Adding a type signature changes heap allocation into stack allocation without changing the actual type

[GHC]

#6040: Adding a type signature changes heap allocation into stack allocation
without changing the actual type
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    Reporter:  tibbe             |       Owner:  simonpj         
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:  7.8.1           
   Component:  Compiler          |     Version:  7.4.1           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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Changes (by tibbe):

 * cc: fox@… (added)


Comment:

 I can't reproduce this with a smaller example so I'm deferring this to
 Milan Straka, who first discovered the issue.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6040#comment:3>
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