Re: [GHC] #8817: segmentation fault in 7.8 RC1

27 Feb 2014

      #8817: segmentation fault in 7.8 RC1
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        Reporter:  hamishmack        |            Owner:  simonmar
            Type:  bug               |           Status:  new
        Priority:  highest           |        Milestone:  7.8.1
       Component:  Runtime System    |          Version:  7.8.1-rc1
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Simon Marlow ):

 In [changeset:"b1ddec1e6d4695d71d38b59db26829d71ad784e1/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="b1ddec1e6d4695d71d38b59db26829d71ad784e1"
 Fix a bug in codegen for non-updatable selector thunks (#8817)

 To evaluate most non-updatable thunks, we can jump directly to the
 entry code if we know what it is.  But not for a selector thunk: these
 might be updated by the garbage collector, so we have to enter the
 closure with an indirect jump through its info pointer.
 }}}

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8817#comment:7
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