Hello!
GHC nicely asked me to report the bug, so here it goes :)
Compiling this code in GHC 5.04.1 and 5.04.2
{-# OPTIONS -fglasgow-exts #-}
module Bug where
type T a = Int -> (# Int, Int #)
f :: T a -> T a
f t = \x -> case t x of r -> r
brings the following error message:
ghc-5.04.1: panic! (the `impossible' happened, GHC version 5.04.1):
codeGen/CgRetConv.lhs:83: Non-exhaustive patterns in function
dataReturnConvPrim
Please report it as a compiler bug to [EMAIL PROTECTED],
or http://sourceforge.net/projects/ghc/.
PS. Orignal code what a bit more complicated - this is the simplified
version.
Best regards,
Tom
--
.signature: Too many levels of symbolic links
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