Segmentation fault qComboBox

[Cucus]

Hi

When I try to clean my combo box to add new values (may not be the same number of elements) I have a segmentation fault. It always happens on the second time where the comboBox is modified. Here's the code:

void MenuPrincipal::updateComboBox(std::vector<std::vector<float> > solutions)
{
    QString solution;
    QList<QString> finalText;
    solution = " ";
 
    ui->comboBox->clear();  //segmentation fault
 
//adding objects...
    for(int i=0;i<solutions.size();i++)
    {
        solution = "";
        solution.append("(");
        solution.append(QString::number(i+1));
        solution.append(")");
        solution.append(" -> ");
        for(int j=0;j<6;j++)
        {
            solution.append(QString::number((double)solutions[i][j],'f',2));
            if(j<solutions[i].size()-1)solution.append(" , ");
        }
        finalText.push_back(solution);
    }
 
    QStringList longerList = (finalText);
    this->ui->comboBox->addItems(longerList);
}

void MenuPrincipal::updateComboBox(std::vector<std::vector<float> > solutions)
{
    QString solution;
    QList<QString> finalText;
    solution = " ";
  
    ui->comboBox->clear();  //segmentation fault

//adding objects...
    for(int i=0;i<solutions.size();i++)
    {
        solution = "";
        solution.append("(");
        solution.append(QString::number(i+1));
        solution.append(")");
        solution.append(" -> ");
        for(int j=0;j<6;j++)
        {
            solution.append(QString::number((double)solutions[i][j],'f',2));
            if(j<solutions[i].size()-1)solution.append(" , ");
        }
        finalText.push_back(solution);
    }

    QStringList longerList = (finalText);
    this->ui->comboBox->addItems(longerList);
}

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