#1220: Newtype deriving should only work if superclasses are newtype-derived
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Reporter: simonpj | Owner:
Type: bug | Status: closed
Priority: normal | Milestone: 6.8 branch
Component: Compiler (Type checker) | Version: 6.6
Severity: normal | Resolution: invalid
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
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Changes (by simonpj):
* status: new => closed
* resolution: => invalid
Comment:
No rejoinders, so closing this as 'invalid'. But I'll add a pointer to
this exchange to the source code, with `Note [Newtype deriving
superclasses]` in `TcDeriv`.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1220#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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