[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:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  new => patch
 * differential:   => Phab:D4075


Comment:

 I wonder if we are running out of memory; The builder has only 4GB of RAM
 and four vCPUs. I have seen GHC segfault due to OOM conditions in the
 past.

 I took a look at the allocator and noticed that we never actually check
 whether commit was successful. I've fixed this in Phab:D4075.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14329#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler