[GHC] #12901: Levity polymorphic expressions mustn't be floated out

[GHC]

#12901: Levity polymorphic expressions mustn't be floated out
-------------------------------------+-------------------------------------
        Reporter:  hsyl20            |                Owner:  hsyl20
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:  fixed             |             Keywords:
                                     |  LevityPolymorphism
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2769
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  patch => closed
 * resolution:   => fixed
 * milestone:   => 8.2.1


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12901#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler