[GHC] #15242: Typechecker sometimes doesn't preserve HsPar in original source.

[GHC]

#15242: Typechecker sometimes doesn't preserve HsPar in original source.
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        Reporter:  wz1000            |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.5
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:  T15242
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4822
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"cd95c2ffdc5143acd3ae341ff6a19fc603b98db3/ghc"
 cd95c2ff/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="cd95c2ffdc5143acd3ae341ff6a19fc603b98db3"
 Preserve parenthesis in function application in typechecker

 Preserve HsPars while typechecking

 Test Plan: T15242

 Reviewers: bgamari, alanz, simonpj

 Reviewed By: alanz, simonpj

 Subscribers: simonpj, AndreasK, rwbarton, thomie, carter

 GHC Trac Issues: #15242

 Differential Revision: https://phabricator.haskell.org/D4822
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15242#comment:4>
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