[GHC] #13713: fdefer-type-errors makes missing import errors disappear

[GHC]

#13713: fdefer-type-errors makes missing import errors disappear
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        Reporter:  nh2               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12529            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 Yes, it'd also be possible just to stop suppressing warnings when there
 are errors.  What do people think?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13713#comment:3>
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