[SOLVED] Problem with QRegularExpression

[igorland]

Hello. I have a problem with regex. The following function crashes my program:

[code]
QString Metar::getTemperature()
{

QString temp;
QString metarReport = "CYOW 171900Z 33329G45MPS 15SM SCT050 24/M13 A3013 RMK CU3 SLP251 DENSITY ALT 1200FT";

// If Metar report has not been downloaded properly
if (metarReport == "N/A")
{
    temperature = "N/A";
}

else
{
    QRegularExpression rx("(^|\\s)M?\\d+/M?\\d+($|\\s)");
    QRegularExpressionMatch match = rx.match(metarReport);
    if (match.hasMatch())
    {
        temp = match.captured(1);
    }


    // The resulting string has space in the beginning. We remove the space.
    temp.replace(" ","");

    // If temperature is below zero we need to replace "M" with "-"
    temp.replace('M', '-' );

    // We want only the first part of the string. The second part is dew.
    QStringList tokens = temp.split("/");
    temperature = tokens[1];
}

return temperature;

}
[/code]

It should return 24.
I tried it with QRegEx -- same problem.

Thanks for your help!

[dbzhang800]

Hi,
Are you sure that the length of your tokens is greater than or equal to 2 ?

[igorland]

Hi,

I changed to

temp = match.captured(0);

I do not have this problem now. No crash.

Thanks!

Igor