QTemporaryFile forgets the fileName() on close()

[Bernhard Rosenkränzer]

I'm not 100% sure that this is a bug, but it should either be fixed or the 
documentation should be updated to mention this behavior:

QTemporaryFile forgets the fileName() after it is close()d.

Simple test case (problem occurred here with Qt 4.4.1-20080402 on Linux):

#include <QTemporaryFile>
#include <QTextStream>
#include <iostream>

using std::cerr;
using std::endl;

int main(int argc, char **argv) {
        QTemporaryFile f("/tmp/testXXXXXX");
        f.setAutoRemove(false);
        f.open();
        cerr << "File name is " << f.fileName().toLatin1().data() << endl;
        f.close();
        cerr << "File name after close() is " << f.fileName().toLatin1
().data() << endl;
}

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