[GHC] #11224: Program doesn't preserve semantics after pattern synonym inlining.

[GHC]

#11224: Program doesn't preserve semantics after pattern synonym inlining.
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        Reporter:  anton.dubovik     |                Owner:
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Windows           |         Architecture:  x86_64
 Type of failure:  Incorrect result  |  (amd64)
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11225            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Matthew Pickering <matthewtpickering@…>):

 In [changeset:"a701694b27143d094f9de0a78757bbdeaa07daa6/ghc"
 a701694b/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a701694b27143d094f9de0a78757bbdeaa07daa6"
 Add testcase for #11224

 Test Plan: Validate

 Reviewers: austin, mpickering

 Reviewed By: mpickering

 Subscribers: mpickering, thomie

 Differential Revision: https://phabricator.haskell.org/D1622

 GHC Trac Issues: #11224
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11224#comment:16>
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