[GHC] #10279: panic on haskell-src-exts

[GHC]

#10279: panic on haskell-src-exts
-------------------------------------+-------------------------------------
        Reporter:  throwaway123      |                Owner:  ezyang
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Template Haskell  |              Version:  7.10.1
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1342
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by osa1):

 @goldfire, This may be relevant:

 {{{#!haskell
 -- | A string which uniquely identifies a package.  For wired-in packages,
 -- it is just the package name, but for user compiled packages, it is a
 hash.
 -- ToDo: when the key is a hash, we can do more clever things than store
 -- the hex representation and hash-cons those strings.
 newtype UnitId = PId FastString deriving( Eq, Typeable )
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10279#comment:30>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler