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Date: Tue, 19 Oct 2010 19:40:31 -0400
From: mark <mark@none.com>
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Subject: not catching exceptions
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Date: 2010-10-19T19:40:31-04:00
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Hi:

I'm targeting some Ada95 at three different systems.  One is a host 
system running Linux, Intel based.  Exceptions are caught just fine. 
Another is a bare board with a PowerPC running Linux.  Exceptions are 
also trapped fine.  The third is a system running Linux but instead of 
using glibc it uses uclibc.  Exceptions are not caught.  All I get is an 
abort message (abort).  The configure information for this one is below-

   $ ./powerpc-mpc8248-linux-uclibc-gcc -v
   Using built-in specs.
   Target: powerpc-mpc8248-linux-uclibc
   Configured with: ../../configure --prefix=/opt/atc/cpp_userchain
   /ppc8248-linux-toolchain --target=powerpc-mpc8248-linux-uclibc
   --with-cpu=603 --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu
   --with-sysroot=/opt/atc/cpp_userchain/ppc8248-linux-toolchain/sysroot
   --enable-shared --enable-threads=gnat --disable-tls
   --disable__cxa_atexit --enable-languages=c,ada
    Thread model: gnat
    gcc version 4.1.2

I've tried this with both --enable-threads (POSIX model) and 
enable-threads=gnat.  I've tried with --enable__cxa_atexit and 
--disable__cxa_atexit.  I can't seem to catch exceptions.

A simple test program where I just raise and catch an exception gives 
the same result...abort.  Outside of not being able to catch exceptions, 
everything else works great (tasking, protected types, etc).

Any thoughts on why exceptions are not being trapped on the  would be 
appreciated.

Thanks.