[GHC] #12802: prototype mismatch with EFF_ from unregisterisered GHC when building ieee754

[GHC]

#12802: prototype mismatch with EFF_ from unregisterisered GHC when building
ieee754
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        Reporter:  clint             |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by slyfox):

 I think it was broken not by GHC but by a new libc that started exposing
 primitives named the same way. To stop GHC emitting incompatible proto
 we can add next* functions to whitelist:

 {{{
 compiler/cmm/CLabel.hs-math_funs = mkUniqSet [
 compiler/cmm/CLabel.hs-        -- _ISOC99_SOURCE
 compiler/cmm/CLabel.hs-        (fsLit "acos"),         (fsLit "acosf"),
 (fsLit "acosh"),
 compiler/cmm/CLabel.hs-        (fsLit "acoshf"),       (fsLit "acoshl"),
 (fsLit "acosl"),
 }}}

 But I suspect it won't help you as ieee754 actually redefines at least
 'nextup'.
 As a workaround ieee754 might like to rename C symbols to at least not
 clast with
 libc symbols.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12802#comment:2>
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