[GHC] #7854: Constrained method type accepted in Haskell 98 mode

[GHC]

#7854: Constrained method type accepted in Haskell 98 mode
-------------------------------------+-------------------------------------
              Reporter:  refold      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.6.3
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by monoidal):

 * status:  closed => new
 * resolution:  wontfix =>


Comment:

 Sorry for reopening, but I think the situation can be improved, currently
 `-XConstrainedClassMethods` seems to do nothing and the documentation is
 misleading. I would support deprecating and eventually removing this
 pragma, and adding a notice to "Known bugs and infelicities" section.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7854#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler