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

[GHC]

#3874: GHC.Exts.traceEvent segfaults
--------------------------------+-------------------------------------------
    Reporter:  cjs              |        Owner:  simonmar     
        Type:  bug              |       Status:  assigned     
    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
--------------------------------+-------------------------------------------

Comment(by simonmar):

 Fixed, thanks:

 {{{
 Fri Feb 26 09:32:15 GMT 2010  Simon Marlow <marlowsd at gmail.com>
   * Fix crash when using printf format specifiers in traceEvent (#3874)
 }}}

 I have a fix for the crash with `+RTS -ls -v` coming shortly.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3874#comment:6>
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