[GHC] #13107: Negative literal equal to minBound gives a spurious warning

[GHC]

#13107: Negative literal equal to minBound gives a spurious warning
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        Reporter:  erikd             |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  invalid           |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  error/warning at compile-time      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by rwbarton):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 I don't see the problem here, although the warning requires careful
 reading.

 `-128` is the application of unary minus to the literal `128`. The literal
 `128` that you wrote does indeed lie outside of the `Int8` range as the
 warning states. And the warning even suggested turning on
 `NegativeLiterals`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13107#comment:2>
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