[GHC] #9825: ghc "panic! (the 'impossible' happened)" building vimus on NixOS

GHC ghc-devs at haskell.org
Wed Sep 9 16:21:27 UTC 2015


#9825: ghc "panic! (the 'impossible' happened)" building vimus on NixOS
-------------------------------------+-------------------------------------
        Reporter:  jzellner          |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Runtime System    |                 Version:  7.8.3
  (Linker)                           |
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86
 Type of failure:  Compile-time      |               Test Case:
  crash                              |
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by rwbarton):

 I didn't investigate the specifics of the case in this ticket but your
 theory sounds 100% plausible. See #10761 for another example of the same
 phenomenon.

 x86_64 Linux has lazy symbol resolution by default too. I guess x86 Linux
 must differ in some detail, either in GHC or in the way dynamic linking
 works.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9825#comment:5>
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