[GHC] #13594: Typechecker behavior w.r.t. BangPatterns and nested foralls has changed in 8.2

[GHC]

#13594: Typechecker behavior w.r.t. BangPatterns and nested foralls has changed in
8.2
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.2.1-rc2
  checker)                           |             Keywords:  BangPatterns,
      Resolution:                    |  RankNTypes
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3525
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"3e79fe42b907653d97cd3a5496a8f133320354eb/ghc"
 3e79fe42/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="3e79fe42b907653d97cd3a5496a8f133320354eb"
 Fix up tests for #13594

 This adds the GHCi variant of the failing program in #13594. Also, I
 inadvertently changed the T13594 test previously introduced in a way that
 made
 it no longer faithfully test the ticket as written. Fix this.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13594#comment:13>
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