[GHC] #15508: concprog001 fails with various errors

[GHC]

#15508: concprog001 fails with various errors
-------------------------------------+-------------------------------------
        Reporter:  osa1              |                Owner:  osa1
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.5
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #15571            |  Differential Rev(s):  Phab:D5051
       Wiki Page:                    |  (reverted), Phab:D5165, Phab:D5178
-------------------------------------+-------------------------------------
Changes (by osa1):

 * differential:  Phab:D5051 (reverted), Phab:D5165 => Phab:D5051
     (reverted), Phab:D5165, Phab:D5178


Comment:

 Thanks Simon. Submitted a patch with some comments and an update to the
 sanity check.

 Current status:

 - debug runtime seems to work (the program takes too long to run and I
 killed it after 30 mins or so)
 - debug + threaded runtime seems to work (did 10 runs with `+RTS -DS -N2`)
 - debug + prof fails with
   {{{
   Mult: internal error: ASSERTION FAILED: file rts/sm/Sanity.c, line 210

     (GHC version 8.7.20180923 for x86_64_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
   }}}
   (the PAP invariant bug)
 - debug + prof + threaded fails with different errors like
   {{{
   Mult: internal error: invalid closure, info=0x53b130
     (GHC version 8.7.20180923 for x86_64_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
   }}}
   or
   {{{
   Mult: internal error: ASSERTION FAILED: file rts/sm/Evac.c, line 890
     (GHC version 8.7.20180923 for x86_64_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
   }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15508#comment:20>
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