[GHC] #12169: libraries/base/dist-install/build/HSbase-4.9.0.0.o: unknown symbol `stat'

[GHC]

#12169: libraries/base/dist-install/build/HSbase-4.9.0.0.o: unknown symbol `stat'
-------------------------------------+-------------------------------------
           Reporter:  thomie         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:  8.0.1
  System (Linker)                    |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 When I make the following change:
 {{{
 --- a/mk/flavours/validate.mk
 +++ b/mk/flavours/validate.mk
 @@ -2,7 +2,7 @@ SRC_HC_OPTS        = -O0 -H64m
  SRC_HC_OPTS_STAGE1 = -fllvm-fill-undef-with-garbage   # See Trac 11487
  GhcStage1HcOpts    = -O -DDEBUG
  GhcStage2HcOpts    = -O -dcore-lint
 -GhcLibHcOpts       = -O -dcore-lint
 +GhcLibHcOpts       = -O0 -dcore-lint
  BUILD_PROF_LIBS    = NO
  SplitObjs          = NO
  HADDOCK_DOCS       = YES
 }}}

 And push to Travis (`DYNAMIC_GHC_PROGRAMS = NO`, `GhcLibWays = v`), a
 [https://api.travis-ci.org/jobs/136229053/log.txt?deansi=true gazillion
 tests fail] with:

 {{{
 libraries/base/dist-install/build/HSbase-4.9.0.0.o: unknown symbol `stat'
 }}}

 Originally reported in https://github.com/snowleopard/hadrian/issues/259.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12169>
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