[GHC] #7433: Promoted types accepted without flag

GHC cvs-ghc at haskell.org
Tue Nov 20 10:07:58 CET 2012


#7433: Promoted types accepted without flag
-----------------------------+----------------------------------------------
Reporter:  dreixel           |          Owner:                  
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.6.1             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
-----------------------------+----------------------------------------------
 Sean Leather reports that
 {{{
 data N = Z
 type T = 'Z
 }}}
 is accepted without `-XDataKinds`.

 Interestingly, if we remove the quote on `'Z` we get the expected error:
 {{{
     Not in scope: type constructor or class `Z'
     A data constructor of that name is in scope; did you mean -XDataKinds?
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7433>
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