[GHC] #2995: ghc -Wall does not complain about unnecessary data constructor imports

[GHC]

#2995: ghc -Wall does not complain about unnecessary data constructor imports
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Reporter:  EyalLotem         |          Owner:                  
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  6.10.1            |       Severity:  minor           
Keywords:                    |       Testcase:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
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 If it is enough to import:

 import SomeModule(SomeType)

 Then ghc should complain (warn) when importing:

 import SomeModule(SomeType(..))

 or:

 import SomeModule(SomeType(SomeConstructor))

 But it doesn't output any complaint or warning.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2995>
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