[GHC] #4215: canonicalizePath behaves strangely with paths that do not exist

[GHC]

#4215: canonicalizePath behaves strangely with paths that do not exist
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        Reporter:  creswick          |                   Owner:  ekmett
            Type:  bug               |                  Status:  upstream
        Priority:  low               |               Milestone:  7.12.1
       Component:  Core Libraries    |                 Version:  6.12.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by ekmett):

 * cc: core-libraries-committee@… (added)
 * status:  new => upstream


Comment:

 Submitted upstream: https://github.com/haskell/directory/issues/23

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4215#comment:15>
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