[GHC] #16114: strange "instance .. => .. => .. where ..."

[GHC]

#16114: strange "instance .. => .. => .. where ..."
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        Reporter:  j.waldmann        |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
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 RyanGlScott):

 * cc: simonpj (added)


Comment:

 Good catch. This seems to have been caused by commit
 1c062b794bf71a329f65813ce7b72fe2bd3935f0 (`Simplify rnLHsInstType`), which
 removed this "`Malformed instance`" error message.

 Thoughts, simonpj?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16114#comment:1>
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