#5366: UNPACK is paranoid about a phantom type argument
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Reporter: ekmett | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.6.1
Component: Compiler | Version: 7.0.3
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: GHC rejects valid program
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Changes (by igloo):
* milestone: => 7.6.1
Comment:
The root of the problem is that `chooseBoxingStrategy` in
`typecheck/TcTyClsDecls.lhs` thinks that `Foo` is a recursive type.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5366#comment:1>
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