[GHC] #8144: Interface hashes include time stamp of included .h file when CPP is used

[GHC]

#8144: Interface hashes include time stamp of included .h file when CPP is used
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        Reporter:  nh2                           |            Owner:
            Type:  bug                           |           Status:  new
        Priority:  normal                        |        Milestone:
       Component:  Compiler                      |          Version:  7.6.3
      Resolution:                                |         Keywords:
Operating System:  Unknown/Multiple              |     Architecture:
 Type of failure:  Compile-time performance bug  |  Unknown/Multiple
       Test Case:                                |       Difficulty:
        Blocking:                                |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:
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Comment (by simonpj):

 That certainly sounds wrong. Would anyone care to investigate?

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8144#comment:3>
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