[GHC] #10092: lex doesn't handle binary literals

[GHC]

#10092: lex doesn't handle binary literals
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        Reporter:  RyanGlScott       |                   Owner:  ekmett
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Core Libraries    |                 Version:  7.10.1-rc2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |  BinaryLiterals report-impact
 Type of failure:  Incorrect result  |            Architecture:
  at runtime                         |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:  #9224             |                Blocking:
                                     |  Differential Revisions:
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Comment (by ekmett):

 Given that `read` and `show` should have portable behavior across
 implementations, it seems to me that we should _not_ support binary
 literals in `read`/`lex`.

 Otherwise we invite the endless waves of portability problems that ensue
 from the "be liberal in what you accept, strict in what you output" dogma.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10092#comment:2>
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