[GHC] #8189: Default to infinite stack size?

[GHC]

#8189: Default to infinite stack size?
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        Reporter:  nh2               |                   Owner:  bgamari
            Type:  bug               |                  Status:  closed
        Priority:  highest           |               Milestone:  7.8.1
       Component:  Runtime System    |                 Version:  7.6.3
      Resolution:  fixed             |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime crash     |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by ekmett):

 If having an unbounded stack size was the default behavior the last reason
 that `mapM` has to live would go away.

 This would let us dramatically simplify `Traversable`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8189#comment:34>
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