[GHC] #8392: Suggest AllowAmbiguousTypes

[GHC]

#8392: Suggest AllowAmbiguousTypes
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        Reporter:  rwbarton                 |            Owner:  simonpj
            Type:  feature request          |           Status:  new
        Priority:  normal                   |        Milestone:
       Component:  Compiler (Type checker)  |          Version:  7.7
      Resolution:                           |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  None/Unknown             |  Unknown/Multiple
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:
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Comment (by Simon Peyton Jones <simonpj@?>):

 In [changeset:43856a003c9abb1bf8bf1822e6e7f5781b16ac4d/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="43856a003c9abb1bf8bf1822e6e7f5781b16ac4d"
 Improve -XAllowAmbiguousTypes (Trac #8392)

 * Add a suggestion to add AllowAmbiguousTypes when there is an
   ambiguity error

 * Move some of the logic to tcSimplifyAmbiguityCheck

 * Report inaccessible code regardless of the ambiguity check
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8392#comment:5>
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