[GHC] #14947: internal error: Invalid object *c in push()

[GHC]

#14947: internal error: Invalid object *c in push()
-------------------------------------+-------------------------------------
        Reporter:  varosi            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.2
       Component:  Profiling         |              Version:  8.4.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"d5f6d7a03d66a93ec05a90948126feffc9279dc6/ghc"
 d5f6d7a0/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d5f6d7a03d66a93ec05a90948126feffc9279dc6"
 rts/RetainerProfile: Handle BLOCKING_QUEUES

 push() considers BLOCKING_QUEUES to be an invalid closure type which
 should never be present on the stack. However, retainClosure made no
 accomodation for this and ended up pushing such a closure. This lead
 to #14947.

 Test Plan: Validate

 Reviewers: simonmar, erikd

 Reviewed By: simonmar

 Subscribers: thomie, carter, RyanGlScott

 GHC Trac Issues: #14947

 Differential Revision: https://phabricator.haskell.org/D4538
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14947#comment:10>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler