[GHC] #12839: mmap functions not properly guarded by RTS_LINKER_USE_MMAP in Linker.c

[GHC]

#12839: mmap functions not properly guarded by RTS_LINKER_USE_MMAP in Linker.c
-------------------------------------+-------------------------------------
           Reporter:  shlevy         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:  8.1
  System (Linker)                    |
           Keywords:                 |  Operating System:  Other
       Architecture:                 |   Type of failure:  Compile-time
  Unknown/Multiple                   |  crash or panic
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 A few uses of munmap etc. are inside of C conditional statements (e.g. `if
 (RTS_LINKER_USE_MMAP && oc->imageMapped)`) instead of CPP conditional
 statements, causing compilation failure on systems that don't use MMAP

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12839>
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