[GHC] #11550: ghc-HEAD -DDEBUG is broken (possiby by D1880)

[GHC]

#11550: ghc-HEAD -DDEBUG is broken (possiby by D1880)
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        Reporter:  slyfox            |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1889
       Wiki Page:                    |
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Comment (by osa1):

 FYI I reverted the patch in the meantime.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11550#comment:4>
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