Integers to Ints

[Steinitz, Dominic J]

Can someone explain the following behaviour? Or is it a bug in hugs?

X690v5> (fromIntegral(toInteger(minBound::Int))::Int)

Program error: {primIntegerToInt (-2147483648)}
(15 reductions, 70 cells)

X690v5> (fromIntegral(toInteger((minBound::Int)+1))::Int)
-2147483647
(21 reductions, 29 cells)

X690v5> minBound::Int
-2147483648
(9 reductions, 19 cells)

Dominic.

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