[GHC] #4108: GHC.Integer.hashInteger is a misnomer and confuses people

[GHC]

#4108: GHC.Integer.hashInteger is a misnomer and confuses people
---------------------------------+------------------------------------------
    Reporter:  duncan            |       Owner:              
        Type:  bug               |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  6.12.2            |    Keywords:              
          Os:  Unknown/Multiple  |    Testcase:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
---------------------------------+------------------------------------------
 `GHC.Integer.hashInteger` from the integer-gmp package does not hash
 `Integer`s. It extracts the first `Int` from an `Integer` which might
 possibly be a useful utility in a hash function (it is used in
 `Data.Unique.hashUnique`).

 The fact this function has this name makes people tempted to use it. This
 is a bad thing. There is at least one package on hackage using this (name
 withheld to protect the guilty).

 The function should be renamed to reflect what it actually does. The fact
 that this might break programs using this function should be seen as a
 bonus.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4108>
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