[GHC] #3874: GHC.Exts.traceEvent segfaults

[GHC]

#3874: GHC.Exts.traceEvent segfaults
--------------------------------+-------------------------------------------
    Reporter:  cjs              |        Owner:  igloo        
        Type:  merge            |       Status:  new          
    Priority:  high             |    Milestone:  6.12.2       
   Component:  Runtime System   |      Version:  6.12.1       
    Keywords:  event, eventlog  |   Difficulty:               
          Os:  Linux            |     Testcase:               
Architecture:  x86_64 (amd64)   |      Failure:  Runtime crash
--------------------------------+-------------------------------------------
Changes (by simonmar):

  * owner:  simonmar => igloo
  * status:  assigned => new
  * type:  bug => merge


Comment:

 Fix for the crash:

 {{{
 Fri Feb 26 11:06:08 GMT 2010  Simon Marlow <marlowsd at gmail.com>
   * Tweak the tracing flags slightly, and clean up error handling and
 diagnostics
 }}}

 I think we could merge this into 6.12.2, since the changes to flags are
 minor and don't affect the common uses (i.e. `+RTS -ls` still works the
 same as before).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3874#comment:7>
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