[GHC] #3543: -fext-core doesn't force recompilation when .hcr file doesn't exist

[GHC]

#3543: -fext-core doesn't force recompilation when .hcr file doesn't exist
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    Reporter:  tim               |        Owner:                  
        Type:  bug               |       Status:  new             
    Priority:  normal            |    Milestone:  6.12.2          
   Component:  Driver            |      Version:  6.10.4          
    Severity:  minor             |   Resolution:                  
    Keywords:                    |   Difficulty:  Unknown         
    Testcase:                    |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |  
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Changes (by igloo):

  * difficulty:  => Unknown
  * milestone:  => 6.12.2

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3543#comment:1>
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