[GHC] #15114: ghc 8.4.1 lifts errors out of if then else

[GHC]

#15114: ghc 8.4.1 lifts errors out of if then else
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        Reporter:  elaforge          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.4.1
      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 Simon Peyton Jones <simonpj@…>):

 In [changeset:"6742ce2d8e0919dd75b5ecb0e2b5f891c442bdd3/ghc" 6742ce2/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="6742ce2d8e0919dd75b5ecb0e2b5f891c442bdd3"
 Test Trac #15114
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15114#comment:8>
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