#1154: GADT syntax for newtype causes tcConDecl exception
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Reporter: ccshan | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.6
Severity: normal | Keywords:
Difficulty: Unknown | Testcase:
Architecture: Unknown | Os: Linux
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{{{
$ cat Bug.hs
{-# OPTIONS -fglasgow-exts #-}
module Bug where
newtype Bug a where Bug :: a -> Bug a
$ ghc -c Bug.hs
ghc-6.6: panic! (the 'impossible' happened)
(GHC version 6.6 for i386-unknown-linux):
typecheck/TcTyClsDecls.lhs:(468,0)-(524,4): Non-exhaustive
patterns in function tcConDecl
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1154>
GHC <http://www.haskell.org/ghc/>
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