Enumeration-empty warning not firing for `[Integer]`

GHCi, version 7.10.2: http://www.haskell.org/ghc/  :? for help
λ:2> [10..4] :: [Integer]
[]
it :: [Integer]


λ:3> [10..4] :: [Int]
<interactive>:3:1: Warning: Enumeration is empty
[]
it :: [Int]


λ:4> [10..4] :: [Word]
<interactive>:4:1: Warning: Enumeration is empty
[]
it :: [Word]

(Trivial to fix, patch following shortly)

Trac metadata

Trac field	Value
Version	7.10.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	low
Resolution	Unresolved
Component	Compiler
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