Wireshark-bugs: [Wireshark-bugs] [Bug 9761] Null pointer dereference in Cairo if 50, 000 charact

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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sat, 18 Jun 2016 20:15:18 +0000

Comment # 9 on bug 9761 from 
(In reply to Guy Harris from comment #1)
> Hopefully Qt doesn't have that particular bug.

I don't think this particular code path exists in the Qt UI but there might be
other places where we pass unsanitized strings to QMessageBox. Either way, I
just tried adding

    QMessageBox mb;
    QString ls;
    ls.fill('a', 50000);
    mb.setText(ls);
    mb.setInformativeText(ls);
    mb.exec();

to the MainWelcome constructor and got a message box about half the screen
width. The 'a's were simply truncated.

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