[GHC] #8987: TH: panic in reportWarning when the message throws an exception

[GHC]

#8987: TH: panic in reportWarning when the message throws an exception
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        Reporter:  Yuras               |            Owner:
            Type:  bug                 |           Status:  patch
        Priority:  normal              |        Milestone:
       Component:  Compiler            |          Version:  7.8.1
      Resolution:                      |         Keywords:
Operating System:  Unknown/Multiple    |     Architecture:
 Type of failure:  Compile-time crash  |  Unknown/Multiple
       Test Case:                      |       Difficulty:  Unknown
        Blocking:                      |       Blocked By:
                                       |  Related Tickets:
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Comment (by simonpj):

 Looks great.  But where is `Note [Exceptions in TH]`?  If you could just
 add that, it'd be great.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8987#comment:6>
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