According to perlvar, $^S has three states: true, false or undefined. True inside eval, false elsewhere, or undefined if parsing is not finished. This has the effect of $^S always being undef when die occurs in a BEGIN block (or use.) I'm stuck at this point, so I need to find a way around it.

How do I know if my DIE handler is being called within an eval when parsing is not yet complete?

example:
BEGIN {
    $SIG{__DIE__} = sub {
        die @_ if $^S; # dont mess with eval.

        # ...my custom handler code...
        exit(0);
    }
    
    eval {
        die 'another day';
    };
    
    if ($@) {
        # execution never happens
    };
}

eval {
    die 'to day good';
};

if ($@) {
    # this works
};

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In reply to BEGIN, eval {} and $^S by eclark

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