[GHC] #11170: (read ".9") :: Double unable to parse

[GHC]

#11170: (read ".9") :: Double unable to parse
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        Reporter:  varosi            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Core Libraries    |              Version:  7.10.2
      Resolution:                    |             Keywords:  Read, report-
                                     |  impact
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by varosi):

 Is it possible for GHC 8.x (major version change) to brake this, so it
 could parse ".xx" floats are most languages do?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11170#comment:10>
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