[Qt-interest] [Newbie question] Why string.toAscii().data() doesn't work?

[Jesús Spí­nola]

I'll like to know why this code doesn't work:

QString testingString = "testing";
char *data = testingString .toAscii().data();
qDebug() << "data = " << data;
std::cout<<"data = " << data << std::endl;

It prints garbage on data. But if I do this way:

QString testingString = "testing";
QByteArray temp = testingString.toAscii();
char *data = temp.data();
qDebug() << "data = " << data;
std::cout<<"data = " << data << std::endl;

It prints "testing" correctly.

My explanation is that on the first version the pointer returned by data()
points to a temporally object "alive" only on the same line, so, when we
reach the next lines the memory of this pointer is invalid.

Is this correct? It doesn't feel natural to me coming from a C# world :P


-- 
Jesús Spínola
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