[MacPorts] #24670: ghc 6.10.4_2 System.Random busted for floats/doubles on Snow Leopard

[MacPorts]

#24670: ghc 6.10.4_2 System.Random busted for floats/doubles on Snow Leopard
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 Reporter:  waterson@…          |       Owner:  macports-tickets@…                   
     Type:  defect              |      Status:  new                                  
 Priority:  Normal              |   Milestone:                                       
Component:  ports               |     Version:  1.8.2                                
 Keywords:  ghc random          |        Port:  ghc                                  
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 The System.Random functions (randomIO, randomRIO), when used with Double
 of Float, seem to consistently return Infinity.  The expectation being
 that these would, of course, return random floating point numbers.

 For example,

 {{{
 ~$ ghci
 GHCi, version 6.10.4: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
 Loading package integer ... linking ... done.
 Loading package base ... linking ... done.
 Prelude> :m +System.Random
 Prelude System.Random> randomIO :: IO Double
 Loading package old-locale-1.0.0.1 ... linking ... done.
 Loading package old-time-1.0.0.2 ... linking ... done.
 Loading package random-1.0.0.1 ... linking ... done.
 Infinity
 Prelude System.Random> randomIO :: IO Float
 Infinity
 Prelude System.Random> randomRIO (0.0 :: Double, 1.0)
 Infinity
 Prelude System.Random> :q
 Leaving GHCi.
 ~$
 }}}

 Integers do not seem to be affected.

-- 
Ticket URL: <http://trac.macports.org/ticket/24670>
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