[GHC] #7603: Bad magic in static (FFI) object (7.6.1 for x86_64-apple-darwin)

[GHC]

#7603: Bad magic in static (FFI) object (7.6.1 for x86_64-apple-darwin)
-------------------------------+--------------------------------------------
    Reporter:  morabbin        |        Owner:                    
        Type:  bug             |       Status:  closed            
    Priority:  normal          |    Component:  Compiler          
     Version:  7.6.1           |   Resolution:  invalid           
    Keywords:                  |           Os:  MacOS X           
Architecture:  x86_64 (amd64)  |      Failure:  Compile-time crash
   Blockedby:                  |     Blocking:                    
     Related:                  |  
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Comment(by thoughtpolice):

 It's certainly possible we could give a more sane error message (for
 example, it should be easy to see when you have ```0xfeedface``` but
 wanted ```0xfeedfacf``` on OS X, that you accidentally have a 32bit object
 instead of a 64bit one.)

 But not panicing when we see this occur is not possible. GHC must do
 dynamic linking and invoke that code at runtime when you use template
 haskell - if the object file is invalid, and the object file must be
 linked to resolve some symbols how else can we proceed but to abort?

 If you would like GHC to give a more sane error message in cases like
 this, feel free to submit a patch. The relevant code here is in
 ```loadObj``` inside the file ```rts/Linker.c``` in the source tree - it
 should be easy to add better errors for some cases like this, and it would
 certainly help elucidate the problem.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7603#comment:4>
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