[GHC] #5438: Wrong result for element check

[GHC]

#5438: Wrong result for element check
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  Reporter:  daniel.is.fischer            |          Owner:  benl            
      Type:  bug                          |         Status:  closed          
  Priority:  high                         |      Milestone:  7.4.1           
 Component:  Data Parallel Haskell        |        Version:  7.0.4           
Resolution:  invalid                      |       Keywords:                  
  Testcase:                               |      Blockedby:                  
Difficulty:                               |             Os:  Unknown/Multiple
  Blocking:                               |   Architecture:  Unknown/Multiple
   Failure:  Incorrect result at runtime  |  
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Changes (by chak):

  * status:  new => closed
  * resolution:  => invalid


Comment:

 Data Parallel Haskell code must be compiled with '-fvectorise'.  If you do
 that for this example, the vectoriser will complain that it cannot
 vectorise `String`.  As explained on
 http://haskell.org/haskellwiki/GHC/Data_Parallel_Haskell only types from
 the mock Prelude `Data.Array.Parallel.Prelude.*` are being support at the
 moment.

 (Besides, DPH isn't in a usable state in 7.0.x.  You need to use 7.2.x,
 which has limited support for DPH.)

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5438#comment:4>
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