I don't know for sure if the behaviour with a segfault will change this, but I don't know why it would:
The standard way to handle unsafe code in perl is using an eval block, and then checking the error variable, like: 

eval { system('somebinary'); };
print STDERR "Arrgh!: $@\n" if ($@);

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In reply to Re: capture error executing a binary by Xaositect
in thread capture error executing a binary by tariqahsan

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