ANNOUNCE: GHC 7.4.1 Release Candidate 2

[Rene de Visser]

What are the plans for http://hackage.haskell.org/trac/ghc/ticket/5623 which 
seems to be still open?

Quoting form the ticket ...
Just to spam a little more, it seems that the HEAD happily duplicates all 
computations on unboxed types. It even duplicates x+x in this example:

foo :: Float -> Float
foo x = let y = x+x in y+yI haven't tested but this looks bad for 
performance critical code.

Rene.