[GHC] #7478: setSessionDynFlags does not always work

[GHC]

#7478: setSessionDynFlags does not always work
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        Reporter:  edsko             |                Owner:  bherzog
            Type:  bug               |               Status:  closed
        Priority:  high              |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.7
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:  ghc-api/T7478
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1017
       Wiki Page:                    |
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Comment (by goldfire):

 As a data point, I just ran into this because T7478 unexpectedly passes on
 my Mac. So perhaps the test should be updated... but I have no idea about
 this end of the operation.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7478#comment:24>
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