[GHC] #7300: Allow CAFs kept reachable by FFI to be forcibly made unreachable for GC

[GHC]

#7300: Allow CAFs kept reachable by FFI to be forcibly made unreachable for GC
---------------------------------+------------------------------------------
    Reporter:  absence           |       Owner:                         
        Type:  feature request   |      Status:  new                    
    Priority:  high              |   Milestone:  7.8.1                  
   Component:  Compiler (FFI)    |     Version:  7.4.1                  
    Keywords:  unsafe caf gc     |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:  Unknown           |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
---------------------------------+------------------------------------------

Comment(by simonmar):

 Replying to [comment:2 ezyang]:
 > Of course, revertCAFs only works when the linker sets up CAFs with
 newDynCAF...

 Spot on.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7300#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler