[GHC] #13188: COMPLETE pragma causes compilation to hang forever under certain scenarios

[GHC]

#13188: COMPLETE pragma causes compilation to hang forever under certain scenarios
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  mpickering
            Type:  bug               |               Status:  patch
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3058
       Wiki Page:                    |
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Changes (by mpickering):

 * status:  new => patch
 * differential:   => Phab:D3058


Comment:

 See Phab:D3058

 If you ever run into problems with interface files the best way to debug
 them is to use one-shot mode (`-c`) rather than make mode. This ensures
 that you are actually loading the interface files each time rather than
 caching the information between modules.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13188#comment:2>
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