#6005: Template Haskell disallows use of promoted data constructor in same
splice
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Reporter: goldfire | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Template Haskell | Version: 7.5
Resolution: | Keywords: DataKinds PolyKinds
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: GHC rejects valid program | Difficulty: Unknown
Testcase: th/T6005 | Blockedby:
Blocking: | Related:
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Changes (by goldfire):
* status: closed => new
* resolution: fixed =>
Comment:
Thanks for applying this fix. Unfortunately, the following case still
fails:
{{{
$( [d|
data Nat = Zero | Succ Nat deriving Show
data Proxy a = Proxy
foo :: Proxy Zero
foo = Proxy
|])
}}}
The only difference between this case and the original is the {{{deriving
Show}}}.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6005#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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