def METHOD_NAME(self, line):
    # addr2line ver. 2.23.2 (Ubuntu)
    m = re.match(r'^\?\?$', line)
    if m:
        line = self.next_line()
        if not re.match(r'^\?\?:0$', line):
            raise Exception('Unexpected response: ' + line)
        return True
    # addr2line ver. 2.23.52.0.1-9.fc19
    m = re.match(r'^\?\? \?\?:0$', line)
    if m:
        return True