[GHC] #11990: Custom Type Error not getting triggered in the nested Type function call

[GHC]

#11990: Custom Type Error not getting triggered in the nested Type function call
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        Reporter:  magesh.b          |                Owner:
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:  8.0.2
       Component:  Compiler          |              Version:  8.0.1-rc3
      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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Changes (by magesh.b):

 * Attachment "MutiCE.hs" added.

 MultipleCustomErrors

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11990>
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