[GHC] #9416: newArray# incorrectly inlines big arrays (overflow1.hs SIGSEGVS on ./validate --slow)

[GHC]

#9416: newArray# incorrectly inlines big arrays (overflow1.hs SIGSEGVS on
./validate --slow)
-------------------------------------+-------------------------------------
              Reporter:  slyfox      |            Owner:  tibbe
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Easy (less than 1
       Type of failure:              |  hour)
  None/Unknown                       |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------

Comment (by tibbe):

 If we disable `shouldInlinePrimOp` altogether we get this Cmm:

 {{{
 R1 = (-40);
 Sp = Sp - 8;
 call stg_newByteArray#(R1) returns to c3Nu, args: 8, res: 8, upd: 8;
 }}}

 Presumably `stg_newByteArrayzh` interprets its argument as an unsigned
 quantity and thus the test passes without `shouldInlinePrimOp`.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9416#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler