[GHC] #10375: arm: ghci hits an illegal instruction

[GHC]

#10375: arm: ghci hits an illegal instruction
-------------------------------------+---------------------------------
        Reporter:  erikd             |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.10.2
       Component:  GHCi              |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:  arm
 Type of failure:  GHCi crash        |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+---------------------------------

Comment (by erikd):

 A bit of `printf` debugging shows that the segault is happening in the
 `schedule` function of `rts/Schedule.c`, specifically on the call to
 `StgRun` around line number 460:

 {{{
     case ThreadRunGHC:
     {
         StgRegTable *r;
         r = StgRun((StgFunPtr) stg_returnToStackTop, &cap->r);
         cap = regTableToCapability(r);
         ret = r->rRet;
         break;
     }
 }}}

 and on Arm, I have confirmed that `StgRun` is the assembler version.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10375#comment:9>
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