| line | true | false | branch | 
 
| 47 | 0 | 0 | unless IO::File::open($tty, $dev, $mode) | 
 
| 57 | 0 | 0 | unless POSIX::isatty($fh) | 
 
| 59 | 0 | 0 | unless POSIX::isatty($self) | 
 
| 62 | 0 | 0 | if ioctl $fh, &IO::Tty::Constant::TIOCGWINSZ, $winsize and ioctl $self, &IO::Tty::Constant::TIOCSWINSZ, $winsize | 
 
| 65 | 0 | 0 | if $^W | 
 
| 76 | 0 | 1 | unless ioctl $self, &IO::Tty::Constant::TIOCGWINSZ(), $winsize | 
 
| 85 | 0 | 0 | unless ioctl $self, &IO::Tty::Constant::TIOCSWINSZ(), $winsize | 
 
| 92 | 0 | 3 | unless POSIX::isatty($self) | 
 
| 95 | 0 | 3 | unless ($termios) | 
 
| 99 | 0 | 3 | unless ($termios->getattr($ttyno)) | 
 
| 108 | 0 | 3 | unless ($termios->setattr($ttyno, &POSIX::TCSANOW)) |