[GHC] #12076: "lazy" leads to undefined reference to `stg_ap_0_upd_info'

[GHC]

#12076: "lazy" leads to undefined reference to `stg_ap_0_upd_info'
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        Reporter:  ezyang            |                Owner:  ezyang
            Type:  bug               |               Status:  merge
        Priority:  high              |            Milestone:  8.0.2
       Component:  Compiler          |              Version:  8.0.1-rc2
  (CodeGen)                          |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2309
       Wiki Page:                    |
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Changes (by bgamari):

 * priority:  normal => high


Comment:

 This actually seems to affect a number of packages (e.g. `servant-
 server`), especially when built with `-O0`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12076#comment:8>
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