[GHC] #4349: ASSERT failed! file compiler/types/FamInstEnv.lhs

[GHC]

#4349: ASSERT failed! file compiler/types/FamInstEnv.lhs
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    Reporter:  daniel.is.fischer  |        Owner:                     
        Type:  bug                |       Status:  new                
    Priority:  normal             |    Milestone:                     
   Component:  Compiler           |      Version:  7.1                
    Keywords:                     |     Testcase:                     
   Blockedby:                     |   Difficulty:                     
          Os:  Linux              |     Blocking:                     
Architecture:  x86                |      Failure:  Building GHC failed
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Comment(by daniel.is.fischer):

 Does validate include -DDEBUG? The failed build was using
 {{{
 SRC_HC_OPTS     = -H32m -O -fasm -Rghc-timing
 GhcStage1HcOpts = -O -fasm
 GhcStage2HcOpts = -O0 -DDEBUG -Wall
 GhcLibHcOpts    = -O -fasm -XGenerics
 GhcLibWays      = v
 SplitObjs       = NO
 HADDOCK_DOCS       = NO
 BUILD_DOCBOOK_HTML = NO
 BUILD_DOCBOOK_PS   = NO
 BUILD_DOCBOOK_PDF  = NO
 }}}
 in mk/build.mk, I did a "quickest" build in another (identical) source-
 tree, that went through fine.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4349#comment:3>
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