One solution: 

{   # start a new scope to keep the effect of "no strict" small
    no strict 'refs';
    $return_value = &$generic_sub(@args);
}

[download]

Another involves eval: 

$return_value = eval("$generic_sub(\@args)");
die $@ if $@;

[download]

In reply to Re: subroutine refs by moritz
in thread subroutine refs by CColin

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