[GHC] #4828: ghci fails to load fat binary archives on OS X

[GHC]

#4828: ghci fails to load fat binary archives on OS X
---------------------------------+------------------------------------------
    Reporter:  gwright           |        Owner:  igloo     
        Type:  bug               |       Status:  patch     
    Priority:  normal            |    Milestone:  7.2.1     
   Component:  Runtime System    |      Version:  7.0.1     
    Keywords:                    |     Testcase:            
   Blockedby:                    |   Difficulty:            
          Os:  MacOS X           |     Blocking:            
Architecture:  Unknown/Multiple  |      Failure:  GHCi crash
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Comment(by igloo):

 Replying to [comment:8 gwright]:
 >
 > I checked the loadArchive routine and it does get the length of an
 archive from the archive header, so we should never run past the end.

 Where does it do that?

 As far as I can see the
 {{{
     while(1) {
         n = fread ( fileName, 1, 16, f );
 [...]
     }
 }}}
 loop will keep reading off the end of the arch's segment.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4828#comment:11>
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