[GHC] #10224: Partial type signatures generate typed hole warnings

[GHC]

#10224: Partial type signatures generate typed hole warnings
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        Reporter:  quchen            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.10.2
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by mpickering):

 I think this is the expected behaviour. From the user guide:


 > By default, the type-checker will report an error message for each hole
 in a partial type signature, informing the programmer of the  inferred
 type. When the -XPartialTypeSignatures flag is enabled, the type-checker
 will accept the inferred type for each hole, generating warnings instead
 of errors. Additionally, these warnings can be silenced with the -fno-
 warn-partial-type-signatures flag.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10224#comment:1>
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