Qt debugging error: "while parsing target library list: not well-formed (invalid token)"

I am debugging an application developed in Qt/C++ using QtCreator. My application reads from the serial port using QextSerialPort, where the serial port is connected to a Rhino Mark IV controller.

int  bytesRead;
char buffer[BUFFER_SIZE];
if (_serialPort->bytesAvailable() > 0
    && (bytesRead = _serialPort->read(buffer, BUFFER_SIZE)) > 0)
{
    _comBuffer.append(buffer, bytesRead);
    buffer[bytesRead+1] = 0; // for debugging purposes
    qDebug(buffer);          // for debugging purposes
}

I am having trouble with this, because I try to read some ASCII data, but what I get into the buffer are开发者_开发问答 some strange characters. For example, the ASCII code for number zero ('0') is replaced by another code that is shown by the debugger and printed by qDebug as '°'.

In addition, I get following message in the Application Output tab: while parsing target library list: not well-formed (invalid token).

I wonder why I do not get the appropriate ASCII code with QextSerialPort. Is it a problem of QextSerialPort or of the Rhino Mark IV controller? I am viewing the traffic through the serial port on two monitors, and the ASCII characters are displayed correctly on the monitors. Thus, I have concluded that it is not a problema of the controller or the communication channel.

What does the message while parsing target library list: not well-formed (invalid token) mean and why is it caused?

Did you configure the serial port correctly in your application (i.e. baudrate, stop bits, etc.)?

Also, you should not add 1 to bytesRead when zero terminating the buffer as that allows a single unwanted byte at the end of the string.

That error message is generated by gdb, not Qt. It may be related to using files/folders with non-latin1 encoded names.