[GHC] #11391: TypeError is fragile

[GHC]

#11391: TypeError is fragile
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  diatchki
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       Component:  Compiler (Type    |              Version:  8.0.1-rc1
  checker)                           |             Keywords:
      Resolution:                    |  CustomTypeErrors
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9637             |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"f0c4e460ee0dad372d5b896a03cdac9666026174/ghc" f0c4e46/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="f0c4e460ee0dad372d5b896a03cdac9666026174"
 Add tests for #11391
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11391#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler