[GHC] #14128: Possible bug in Renamer when dealing with orphans

[GHC]

#14128: Possible bug in Renamer when dealing with orphans
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        Reporter:  Shayan-Najd       |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.2
       Component:  Compiler (Type    |              Version:  8.2.1
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Replying to [comment:8 Shayan-Najd]:
 > Thank you for looking into this.
 > I am still puzzled on why it builds with `make` (with `devel2`) but
 fails with `validate`.
 > Is it because `ASSERT`s are all ignored using `make`?
 >
 The `devel2` build flavour builds only the stage 2 compile with assertions
 enable (specifically by defining the `DEBUG` macro).  `validate`, on the
 other hand, enables assertions when building stage 1. Here, however, we
 are seeing the assertions fail in a run of the stage1 compiler.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14128#comment:9>
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