[GHC] #10245: panic in new integer switch logic with "out-of-range" literals

[GHC]

#10245: panic in new integer switch logic with "out-of-range" literals
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        Reporter:  rwbarton          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  7.11
  (CodeGen)                          |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Incorrect result  |  (amd64)
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by AndreasK):

 * cc: AndreasK (added)
 * status:  closed => new
 * resolution:  fixed =>
 * failure:  Compile-time crash => Incorrect result at runtime


Comment:

 In MatchLit
 [https://ghc.haskell.org/trac/ghc/browser/ghc/compiler/deSugar/MatchLit.hs#L76
 dsLit] doesn't use the `mkMachInt` functions resulting in potentially
 faulty code.

 `y = I# 0x8000000000000000# :: Int` compiles without warning with -Wall
 for example.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10245#comment:15>
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