[GHC] #15053: Compiler panic on invalid syntax (unterminated pragma)

[GHC]

#15053: Compiler panic on invalid syntax (unterminated pragma)
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        Reporter:  AndreasK          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.2.2
  (Parser)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4883
       Wiki Page:                    |
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Comment (by osa1):

 This is easy to fix, we just need to decide on an error message. If
 current message is fine that we could just throw an exception instead of
 panicking.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15053#comment:2>
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