[GHC] #11409: Cannot instantiate literals using TypeApplications

[GHC]

#11409: Cannot instantiate literals using TypeApplications
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        Reporter:  Feuerbach         |                Owner:  goldfire
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1-rc1
      Resolution:                    |             Keywords:
                                     |  TypeApplications
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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Changes (by simonpj):

 * owner:   => goldfire
 * keywords:   => TypeApplications


Comment:

 It'd also be possible to define
 {{{
 integerLit :: Integer -> forall a. Num a => a
 integerLit n = fromInteger n
 }}}
 arrange that `3` elaborates to `integerLit 3` :: forall a. Num a => a`,
 and now that will work as expected.

 This is so simple to do that it might be worth doing, just to avoid
 documenting the infelicity.   After all, Haskell advertises that `3 ::
 forall a. Num a => a`, so it's annoying if it doesn't behave like that.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11409#comment:3>
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