#5483: Eta-reduced term has wrongly inferred monomorphic type
------------------------+---------------------------------------------------
Reporter: darchon | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler (Type checker)
Version: 7.2.1 | Keywords:
Testcase: | Blockedby:
Os: MacOS X | Blocking:
Architecture: x86 | Failure: None/Unknown
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Hi,
When creating a file with the following two definitions:
{{{
rowtotals xs = map sum xs
rowtotals' = map sum
}}}
And loading this file in GHCi. Asking for the type of the two definitions
gives:
{{{
*Main> :t rowtotals
rowtotals :: Num b => [[b]] -> [b]
*Main> :t rowtotals'
rowtotals' :: [[Integer]] -> [Integer]
}}}
Is this the expected behaviour? I would expect both to have the same
polymorphic type.
Cheers, Christiaan
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5483>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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