[GHC] #13332: Report unrecognized pragmas earlier

[GHC]

#13332: Report unrecognized pragmas earlier
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        Reporter:  crockeea          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Poor/confusing    |  Unknown/Multiple
  error message                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by richardfung):

 Looking into this a bit more, I think you're right in that the warning is
 generated. However, I am a little bit confused here because from what I've
 seen, the error is thrown in checkNoErrs.

 checkNoErrs calls failM so the warnings are indeed not shown.

 However, even when I print the messages from getErrsVar (via traceTc)
 there are no warnings. Is that because the warning is not a typecheck
 warning and thus not stored in the TcRnMonad?

 Also, it seems that there's not really a clear path forward on what to do
 with respect to this ticket. I've enjoyed looking into it as a means to
 learn more about the internals but I don't think I'm in a position to
 decide what the best thing to do here is.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13332#comment:6>
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