[GHC] #13839: GHC warnings do not respect the default module header

[GHC]

#13839: GHC warnings do not respect the default module header
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        Reporter:  Feuerbach         |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Feuerbach):

 You are right, I cannot reproduce this by compiling the program either.

 However, I can reproduce this by loading it into ghci, with both 8.0.1 and
 8.6.2.

 I'll update the description to reflect this.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13839#comment:2>
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