[GHC] #11978: running a profiled build of shake test suite with rts args +RTS -hb -N10 triggers SIGSEGV

[GHC]

#11978: running a profiled build of shake test suite with rts args  +RTS -hb -N10
triggers SIGSEGV
---------------------------------+----------------------------------------
        Reporter:  carter        |                Owner:
            Type:  bug           |               Status:  new
        Priority:  highest       |            Milestone:
       Component:  Compiler      |              Version:  8.0.1
      Resolution:                |             Keywords:
Operating System:  MacOS X       |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:  #4820         |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+----------------------------------------

Comment (by Erik de Castro Lopo <erikd@…>):

 In [changeset:"bcfee2181e7b7edfea3473ec408a3a2a1815ecff/ghc"
 bcfee218/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="bcfee2181e7b7edfea3473ec408a3a2a1815ecff"
 rts/LdvProfile.c: Fix NULL dereference on shutdown

 Test Plan: validate

 Reviewers: carter, austin, simonmar, bgamari

 Reviewed By: simonmar, bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2154

 GHC Trac Issues: #11978
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11978#comment:12>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler