[GHC] #11155: Trivial thunk gives "undefined reference to stg_ap_0_upd_info"

[GHC]

#11155: Trivial thunk gives "undefined reference to stg_ap_0_upd_info"
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  simplCore/should_compile/T11155
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by bgamari):

 See Phab:D2230 for a quick patch to catch this sort of issue during C--
 pretty-printing.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11155#comment:15>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler