[GHC] #7454: Missing warning about redundant import of classes/types whose members are used

[GHC]

#7454: Missing warning about redundant import of classes/types whose members are
used
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Reporter:  EyalLotem         |          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:                  
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 If one module exports a class C(..) with a method m,
 and another module imports it via: import Module(C, m)
 And then proceeds to use only "m", one would expect to get a warning about
 the redundant import of "C", but that does not occur.

 Similarly, the same thing happens if one imports a data-type "D", and a
 record field "f", and uses only "f". No redundant import warning is issued
 on D.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7454>
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