[GHC] #9573: Add warning for invalid digits in integer literals

[GHC]

#9573: Add warning for invalid digits in integer literals
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        Reporter:  vlopez            |                Owner:  vlopez
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.9
  (Parser)                           |             Keywords:  report-
      Resolution:                    |  impact, parsing, integer, octal,
                                     |  binary, hexadecimal,
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by thomie):

 * keywords:  parsing, integer, octal, binary, hexadecimal, => report-
     impact, parsing, integer, octal, binary, hexadecimal,


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9573#comment:8>
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