| line | !l | l&&!r | l&&r | condition | 
 
| 121 | 1 | 0 | 0 | exists $self->{'config'} and defined $self->{'config'} | 
 
| 126 | 1 | 0 | 0 | exists $self->{'cc'} and defined $self->{'cc'} | 
 
| 130 | 0 | 0 | 1 | exists $self->{'config'}{'cc'} && defined $self->{'config'}{'cc'} | 
 
| 134 | 1 | 0 | 0 | exists $self->{'os'} and defined $self->{'os'} | 
 
| 138 | 0 | 0 | 1 | exists $self->{'config'}{'osname'} && defined $self->{'config'}{'osname'} | 
 
| 258 | 1 | 0 | 0 | $self->_os eq 'netbsd' and not $self->{'guess'}{'extra_lflags'} =~ /-lgcc_s/ | 
 
| 295 | 0 | 0 | 0 | $self->_os =~ /MSWin32/ && File::Basename::basename($cc) =~ /^cl/i |