[GHC] #9619: HPC Code Coverage complains when two exactly the same mix files are on the path

[GHC]

#9619: HPC Code Coverage complains when two exactly the same mix files are on the
path
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        Reporter:  Kasper            |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  lowest            |               Milestone:
       Component:  Code Coverage     |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Incorrect result  |  (amd64)
  at runtime                         |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by thomie):

 Ok, it's not `hpc sum` that fails, only `hpc markup`:
 {{{
 $ hpc markup dist/hpc/vanilla/tix/IntegrationTests/IntegrationTests.tix
 --hpcdir=dist/hpc/vanilla/mix/IntegrationTests/
 --hpcdir=dist/hpc/vanilla/mix/UnitTests/
 hpc: found 2 instances of ModuleATest in
 ["./.hpc","./dist/hpc/vanilla/mix/UnitTests/","./dist/hpc/vanilla/mix/IntegrationTests/"]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9619#comment:3>
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