[GHC] #15284: Can't parse ''(*) in GHC HEAD

GHC ghc-devs at haskell.org
Sun Jun 17 22:17:23 UTC 2018


#15284: Can't parse ''(*) in GHC HEAD
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  highest           |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.5
  (Parser)                           |
      Resolution:  invalid           |             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 goldfire):

 This is tough. I guess `''*` (with `-XStarIsType`) is a bit like `''(=>)`.
 There really is no `*` -- there is now only `Type`. `*` is merely a
 syntactic gubbin that means `Type`. At first, this was an implementation
 decision that we thought was internal, but it seems that this decision is
 leaking via TH. That said, I'm OK with this behavior, but I could
 convinced if others thought this was poor form.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15284#comment:7>
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