[GHC] #8412: TH allows negative type-level integers

[GHC]

#8412: TH allows negative type-level integers
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        Reporter:  monoidal          |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  GHC accepts       |       Difficulty:  Easy (less than 1
  invalid program                    |  hour)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:"7a76405a81a718f7b1c72d4b9f7d7883abc1b77b/testsuite"]:
 {{{
 #!CommitTicketReference repository="testsuite"
 revision="7a76405a81a718f7b1c72d4b9f7d7883abc1b77b"
 Test #8412
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8412#comment:4>
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