[GHC] #9078: Segfault with makeStableName

[GHC]

#9078: Segfault with makeStableName
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        Reporter:  robertce          |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  highest           |        Milestone:  7.8.3
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by ezyang):

 @chak Stable names are GC'd as normal (as opposed to stable *pointers*),
 so they'll get freed upon GCs. This behavior is new from fixing #7674, I
 assume that is how the bug got introduced too.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9078#comment:10>
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