[GHC] #14434: GHC 8.2.1 picks wrong instances with -O in a presence of an OVERLAPPABLE instance

[GHC]

#14434: GHC 8.2.1 picks wrong instances with -O in a presence of an OVERLAPPABLE
instance
-------------------------------------+-------------------------------------
        Reporter:  dredozubov        |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  fixed             |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  Incorrect result  |            Test Case:
  at runtime                         |  typecheck/should_compile/T14434
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  merge => closed
 * resolution:   => fixed
 * milestone:  8.2.3 => 8.4.1


Comment:

 There won't be a 8.2.3 at this point.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14434#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler