Panic during error message

Marcin 'Qrczak' Kowalczyk qrczak@knm.org.pl
20 Aug 2001 14:22:34 GMT 

Prelude> let x = 64 in x:x

Ambiguous type variable(s) `a' in the constraint `Show a'
arising from*** Exception: Oops!  Entered absent arg w_scKa TcMonad.InstOrigin{-ryl-}

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