[GHC] #7684: cgrun071 segfaults

[GHC]

#7684: cgrun071 segfaults
----------------------------------+----------------------------------
        Reporter:  tibbe          |            Owner:  leroux
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:  7.8.1
       Component:  Compiler       |          Version:  7.7
      Resolution:                 |         Keywords:
Operating System:  MacOS X        |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:  cgrun071       |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------

Comment (by carter):

 ok, so I think we've narrowed it down to "the code generator version is
 correct, our fallback isnt"?

 so @leroux's patch on the native code generator isn't relevant... its that
 the fall back is wrong?

 is the test using the fallback version (written in C?) or the slowpopcount
 one in the test itself?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7684#comment:22>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler