[GHC] #4235: deriving Enum fails for data instances

[GHC]

#4235: deriving Enum fails for data instances
---------------------------------------------+------------------------------
  Reporter:  nestra                          |          Owner:                                         
      Type:  bug                             |         Status:  closed                                 
  Priority:  normal                          |      Milestone:  6.14.1                                 
 Component:  Compiler (Type checker)         |        Version:  6.12.3                                 
Resolution:  fixed                           |       Keywords:  instance deriving, type families, GADTs
  Testcase:  indexed-types/should_run/T4235  |      Blockedby:                                         
Difficulty:                                  |             Os:  Linux                                  
  Blocking:                                  |   Architecture:  x86_64 (amd64)                         
   Failure:  Compile-time performance bug    |  
---------------------------------------------+------------------------------
Changes (by simonpj):

  * status:  new => closed
  * testcase:  => indexed-types/should_run/T4235
  * resolution:  => fixed


Comment:

 Quite right.  I've fixed all of these bugs in the new typechecker branch,
 which will merge to HEAD in the next few weeks.  And added a regression
 test.  Will be in the next release.

 Thanks for good examples

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4235#comment:3>
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