[GHC] #14329: GHC 8.2.1 segfaults while bootstrapping master

[GHC]

#14329: GHC 8.2.1 segfaults while bootstrapping master
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  highest           |            Milestone:  8.2.2
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4075
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"a69fa5441c944d7f74c76bdae9f3dd198007ee42/ghc"
 a69fa544/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a69fa5441c944d7f74c76bdae9f3dd198007ee42"
 rts/posix: Ensure that memory commit succeeds

 Previously we wouldn't check that mmap would succeed. I suspect this may
 have been the cause of #14329.

 Test Plan: Validate under low-memory condition

 Reviewers: simonmar, austin, erikd

 Reviewed By: simonmar

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #14329

 Differential Revision: https://phabricator.haskell.org/D4075
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14329#comment:2>
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