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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: SPARK
Date: Thu, 20 May 2010 07:21:43 +0100
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"Yannick Duchêne (Hibou57)" <yannick_duchene@yahoo.fr> writes:

>> The GPL SPARK 8.1.1 binary release doesn't run well under Mac OS X Snow
>> Leopard (problems with exception handling in 64-bit executables).
> Where does the SPARK executable makes use of exceptions ? I have read
> something asserting the SPARK system is it-self checked to be runtime
> exceptions free. Perhaps this is in an external dependency part.

Yes; the traceback is

#0  0x00007fff82610886 in __kill ()
#1  0x00007fff826b0eae in abort ()
#2  0x00000001000837ce in uw_init_context_1 ()
#3  0x00000001000838e8 in _Unwind_Backtrace ()
#4  0x00000001000c8279 in __gnat_backtrace ()
#5  0x00000001000c42dd in system__traceback__call_chain ()
#6  0x0000000100088259 in ada__exceptions__call_chain ()
#7  0x0000000100087a61 in ada__exceptions__exception_propagation__propagate_exceptionXn ()
#8  0x0000000100088548 in __gnat_raise_nodefer_with_msg ()
#9  0x00000001000885aa in __gnat_raise_exception ()
#10 0x00000001000b5b87 in system__file_io__open ()
#11 0x000000010009744e in ada__text_io__open ()
#12 0x0000000100023f2f in spark_io__open ()
#13 0x000000010002b7be in sparkmake__openorcreatefile.1909 ()
#14 0x000000010002c083 in _ada_sparkmake ()

so I probaby had some missing file. If the SPARK system itself s
excetion-free, and the RTS makes no use of exceptions internally, maybe
this is worth pursuing .. adds to the difficulties, though.