[solved] SIGSEGV segmentation fault

asma11

login.cpp:
@#include "login.h"
#include "ui_login.h"

login::login(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::login)
{
ui->setupUi(this);
QPixmap pic("C:/Users/asma/Desktop/mychat/client/login.png");
ui->label_4->setPixmap(pic);

if(!connOpen())
    ui->label_3->setText("failed to open database");
else
    ui->label_3->setText("Connected");

}

login::~login()
{
delete ui;
}

void login::on_pushButton_clicked()
{
QString username, password;
username = ui->lineEdit_username->text();
password = ui->lineEdit_password->text();

if(!connOpen())
{
    qDebug()<<"failed to open database";
    return;
}
connOpen();
QSqlQuery qry;
//qry.prepare("select * from users where pseudo = '"+username+"' and mot_de_passe = '"+password+"'");
qry.prepare("select * from users where pseudo = :username and mot_de_passe = :password");
            qry.bindValue(":username",username);
            qry.bindValue(":password",password);
if (qry.exec&#40;&#41;)
{
    int count=0;
    while(qry.next())
    {
        count++;
    }
    if(count==1)
    {
        ui->label_3->setText("username and password are correct");
        connClose();
        this->hide();
        client c;
        c.setModal(true);
        c.exec&#40;&#41;;
    }
    if(count<1)
    {
        ui->label_3->setText("username and password incorrect , veuillez s'inscrir");
        connClose();
        this->hide();
        inscription Inscription;
        Inscription.setModal(true);
        Inscription.exec&#40;&#41;;
    }

}
else qDebug()<< qry.lastError();

}

void login::on_pushButton_2_clicked()
{
this->hide();
inscription Inscription;
Inscription.setModal(true);
Inscription.exec();
}
@

KushalAusula

Hi,
As far as I know this error could be caused due to accessing a NULL POINTER of invalid memory.

KushalAusula

Hi,
As far as I know this error could be caused due to accessing a NULL POINTER or invalid memory.

Ildar

What are type of listeMessages object? And are you initialize listeMessages?

asma11

Hi , listeMessages is a QTextBrowser

asma11

i have changed s.th and now the debugger shows me that the ploblem is on line 33 :
socket->connectToHost(serveurIP->text(), serveurPort->value());

SGaist

Hi,

From the code you posted, neither serveurIP nor serveurPort are initialized

asma11

serveurIP is a QLineEdit ,serveurPort is a QDableSpinBox : both are inisialised in client.ui

SGaist

Then, the calls should be

@socket->connectToHost(ui->serveurIP->text(), ui->serveurPort->value());@

asma11

it's ok i have solved this problem but now another error appaired it's related with socket i will create another discussion . Thanx everybody for help :)

SGaist

So what was the problem ?

Since you solved it, please update the thread title prepending [solved] so other forum users may know a solution has been found :)

asma11

Hi ,the problem was on: "socket->connectToHost(ui->serveurIP->text(), ui->serveurPort->value()); " on this line I forget to put ui-> as you told me @SGaist , thanx for help.

SGaist

What is strange is that this would compile, so I guess you have member variables with these names in your class ? If so remove you should remove them