[GHC] #9579: Runtime suggests using +RTS when that's not possible

[GHC]

#9579: Runtime suggests using +RTS when that's not possible
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        Reporter:  gintas            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  low               |               Milestone:  7.12.1
       Component:  Runtime System    |                 Version:  7.9
      Resolution:                    |                Keywords:  newcomer
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by thomie):

 Couldn't you store `RtsOptsEnabledEnum` in the `RtsFlags` struct? See
 `includes/rts/Flags.h`, initialization in `rts/RtsFlags.c`. Then use it
 those 3 places.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9579#comment:8>
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