[GHC] #10106: GHC doesn't warn on typos in language pragmas

[GHC]

#10106: GHC doesn't warn on typos in language pragmas
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        Reporter:  sdemos            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Incorrect         |  (amd64)
  warning at compile-time            |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by sdemos):

 I tested that out with my code, and it does indeed print out the `Warning:
 Unrecognized pragma` warning. However, I think it would be better for
 debugging this type of issue if it didn't suppress the warning, or gave a
 hint that the unrecognized pragma might be the issue.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10106#comment:3>
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