[GHC] #8748: ghc-7.8-rc1/HEAD: --enable-unregisterised fails to build and run with threaded RTS, profiling mode

[GHC]

#8748: ghc-7.8-rc1/HEAD: --enable-unregisterised fails to build and run with
threaded RTS, profiling mode
-------------------------------------+------------------------------------
        Reporter:  slyfox            |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  high              |        Milestone:  7.8.1
       Component:  Compiler          |          Version:  7.8.1-rc1
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  8301
-------------------------------------+------------------------------------

Comment (by Austin Seipp <austin@…>):

 In [changeset:"ebace6969f0ec85b1caa0fea265a5f9990a23b2e/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="ebace6969f0ec85b1caa0fea265a5f9990a23b2e"
 rts/Capability.c: fix crash in -threaded mode on UNREG build

 UNREG mode has quite nasty invariant to maintain:
     capabilities[0] == &MainCapability

 and it's a non-heap memory, while other
 capabilities are dynamically allocated.

 Issue #8748

 Signed-off-by: Sergei Trofimovich <slyfox at gentoo.org>
 Signed-off-by: Austin Seipp <austin at well-typed.com>
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8748#comment:14>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler