app crashes again

Hi again, I'm faced with the second application's crash.
Here is my code:

Code:

---

void DishManager::initPage1()
{
    ui.p1FamilyComboBox->addItems(dishes->getFamilies());
}

---

where p1FamilyComboBox is a instance of

Code:

---

QComboBox

---

, and dishes is an instance of the following class Record.

Code:

---

const QStringList& Record::getDishNamesByFamily(const QString &family) const
{
    QStringList names;
    for(int i = 0; i < dishes.size(); i++)
    {
        if(dishes[i].getFamily() == family)
        {
            names << dishes[i].getName();  //如果某菜谱属于此菜系，则加入其菜名
        }
    }
    return names;
}

---

I think maybe it's due to the

Code:

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const QStringList& Record::getDishNamesByFamily

---

Is there anything wrong with the returning value.
Thanks in advance!!

change

Code:

---

const QStringList& Record::getDishNamesByFamily()

---

to

Code:

---

QStringList Record::getDishNamesByFamily()

---

阅读有关悬挂指针（引用）

Oh, thank you!!
You know Chinese Simplified!!（简体中文）.
But I do not realize it would be something with the reference or pointer. C++ is really strange!

it is very simple...

the local var
QStringList names;
is destroyed when the function returns... so the pointer(reference) to it(the return type) is pointing to the
illegal memory hence the crash..


Btw .. i just used google translater to translate..:) i dont know chinese no matter how simplified it is...

Oh, I see.
Thanks very much!!!

The following codes have any problem??

Code:

---

const QString& getName() const {return name;}

---

it is a method of class Dish. name is a member variable of class Dish.
When I do the following, it crashes again:

Code:

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label.setText(dish.getName());

---

Is this the same problem as above?
Thanks!!

it should not crash now... can u write a minimal compilable example reproducing the problem?

thanks.
I have modify my codes.
I remember that it is said in the <Thinking in C++>, that reference is only to be used in function variables. Maybe I overuserd it.