[GHC] #6023: cpp symbol __GLASGOW_HASKELL__ doesn't reflect version number

GHC cvs-ghc at haskell.org
Thu Apr 19 17:47:41 CEST 2012


#6023: cpp symbol __GLASGOW_HASKELL__ doesn't reflect version number
------------------------------+---------------------------------------------
 Reporter:  josef             |          Owner:                  
     Type:  bug               |         Status:  new             
 Priority:  normal            |      Component:  Compiler        
  Version:  7.4.1             |       Keywords:                  
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown      |       Testcase:                  
Blockedby:                    |       Blocking:                  
  Related:                    |  
------------------------------+---------------------------------------------
 I've just installed ghc 7.4.1 and it seems to get the value of the
 __GLASGOW_HASKELL__ variable wrong:

 Load the program below in ghci and run main. I get "704" as output.

 {{{
 {-# OPTIONS_GHC -cpp #-}
 module Main where

 #if __GLASGOW_HASKELL__ == 704
 main = putStrLn "704"
 #else
 main = putStrLn "something else"
 #endif
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6023>
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