#7959: Panic on deriving nullary typeclass
-------------------------------+--------------------------------------------
Reporter: monoidal | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.7 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Compile-time crash | Blockedby:
Blocking: | Related:
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{{{
{-# LANGUAGE NullaryTypeClasses #-}
class C
}}}
Both `data A deriving C` and `deriving instance C` cause panic. Patch
attached.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7959>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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