[GHC] #14408: error in refineFromInScope

[GHC]

#14408: error in refineFromInScope
-------------------------------------+-------------------------------------
           Reporter:  duog           |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 There are several instances of the following line in the output in a
 validate build:
 {{{
 WARNING: file compiler/simplCore/SimplEnv.hs, line 678 $j_setr
 }}}
 For example:
 https://phabricator.haskell.org/harbormaster/build/36855/?l=0, the
 harbourmaster build of 609f2844b92d5aa474f34b989c6ec5ad9fdb2ce3.

 That line indicates that said warning "is an error!"

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14408>
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