Application Crash when i call my function

[Jaber]

Hello everyone , i'm trying to get value from xml file using qt , so there is the xml file :

<favorites>
  <server>
    <ip>127.0.0.1:7777</ip>
    <nickname></nickname>
    <password></password>
  </server>
  <server>
    <ip>127.1.1.1:7777</ip>
    <nickname>bdfjhd</nickname>
    <password></password>
  </server>
  <server>
    <ip>125.1.1.1:5445</ip>
    <nickname>fdkgfhfhf</nickname>
    <password></password>
  </server>
</favorites>

and this is my function :

QString FavFile::GetFavListServers()
{
    QFile file("favlist.xml");
    file.open(QIODevice::ReadOnly);
    QXmlStreamReader stream(&file);

    QString Ip;
    QString Name;
    QString Pass;

    try
    {
        while(stream.readNext() && !stream.isEndDocument())
        {
            if(stream.name() == "server")
            {
                qDebug() << "server found";

                while(stream.readNext() && !stream.isEndElement())
                {
                    if(stream.name() == "ip")
                    {
                        Ip = stream.readElementText();
                    }
                    if(stream.name() == "nickname")
                    {
                        Name = stream.readElementText();
                    }
                    if(stream.name() == "password")
                    {
                        Pass = stream.readElementText();
                    }
                }
                qDebug() << "IP: " + Ip;
            }
        }
    }
    catch(QException &ex)
    {
        qDebug() << "Bug In try";
    }

    file.close();
}

The function work but app didn't responds ... there is some log :

output :

server found
"IP: 127.0.0.1:7777"
server found
"IP: 127.1.1.1:7777"
server found
"IP: 125.1.1.1:5445"

Le programme s'est terminé subitement . ---> crash 

Debug :

Signal name : 
SIGSEGV
Signal meaning : 
Segmentation fault

i think my loop didnt stop but i dont know why , thanks for help :)

[SGaist]

Hi,

You should get a stack trace. That will help pinpoint the problem.

[mrjj]

hi
with such short input u can also just single step it using debugger and see what go wrong.

[jsulm]

@Jaber Isn't the crash somewhere else in your program, not in FavFile::GetFavListServers()?
You should really just debug as suggested by others.

One note: there is no need to concatenate string when using qDebug:

qDebug() << "IP:" <<  Ip;

[VRonin]

while(stream.readNext() && !stream.isEndElement())
                {
                    if(stream.name() == "ip")

Here you take for granted that stream.readNext() returned QXmlStreamReader::StartElement which is not the case as it can be on QXmlStreamReader::Characters