| line | !l | l&&!r | l&&r | condition | 
 
| 71 | 2 | 1 | 1 | defined $self->[$i] and $self->[$i] == $f | 
 
| 104 | 0 | 0 | 0 | defined $fe and $fe == $f | 
 
| 133 | 1 | 1 | 17 | defined $r && CORE::select($r, undef, undef, $timeout) > 0 | 
 
| 144 | 0 | 0 | 1 | defined $w && CORE::select(undef, $w, undef, $timeout) > 0 | 
 
| 155 | 2 | 0 | 0 | defined $e && CORE::select(undef, undef, $e, $timeout) > 0 | 
 
| 210 | 2 | 0 | 0 | defined $_[0] and not ref $_[0] | 
 
| 231 | 7 | 0 | 0 | defined $rb and defined $r->[$i] | 
 
|  | 7 | 0 | 0 | defined $rb and defined $r->[$i] and vec $rb, $j, 1 | 
 
| 233 | 0 | 5 | 2 | defined $wb and defined $w->[$i] | 
 
|  | 5 | 0 | 2 | defined $wb and defined $w->[$i] and vec $wb, $j, 1 | 
 
| 235 | 2 | 4 | 1 | defined $eb and defined $e->[$i] | 
 
|  | 6 | 1 | 0 | defined $eb and defined $e->[$i] and vec $eb, $j, 1 |