#7313: Impossible happened : CLabel.toInfoLbl stg_newMVarzh
 Reporter:  erikd                |          Owner:                  
     Type:  bug                  |         Status:  new             
 Priority:  normal               |      Component:  Compiler        
  Version:  7.7                  |       Keywords:                  
       Os:  Unknown/Multiple     |   Architecture:  Unknown/Multiple
  Failure:  Building GHC failed  |       Testcase:                  
Blockedby:                       |       Blocking:                  
  Related:                       |  

Comment(by erikd):

 It seems the code that's needed looks something like:

 toEntryLbl (CmmLabel m str CmmCode)      = ?????

 Replacing ????? with the obvious `CmmLabel m str CmmCode` results in the
 following when the stage2 compiler is run"

 ghc-stage2: internal error: scavenge_stack: weird activation record found
 on stack: 65310
     (GHC version 7.7.20121022 for arm_unknown_linux)
     Please report this as a GHC bug:

Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7313#comment:3>
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