[GHC] #14135: PatternSynonyms regression in GHC HEAD (expectJust mkOneConFull)

[GHC]

#14135: PatternSynonyms regression in GHC HEAD (expectJust mkOneConFull)
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        Reporter:  RyanGlScott       |                Owner:  dfeuer
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3981
       Wiki Page:                    |
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Comment (by duog):

 Hope this isn't all obvious:

 Of the four flavours [quick, prof, devel2-stage1, devel2-stage2], only
 devel2-stage2 is compiled with -DDEBUG and hence has the failing assertion
 enabled. I would expect that commenting out the assertion would have
 devl2-stage2 succeed as well (or fail on another assertion!). Either the
 assertion is wrong, or it's problem is later corrected (since core lint
 passes).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14135#comment:18>
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