QCompleter not working in Qt 5.0.0

I have to set the auto completion for the QLineEdit, so i tried using QCompleter. The code shown below works fine in Qt 4.8.4.

But when i try the same code in Qt 5.0.0 (32 bit), it just throws me an error.
QLineEdit:: cannot convert parameter 1 from QCompleter to QCompleterExample.

QStringList wordList;
wordList << "alpha" << "omega" << "omicron" << "zeta";

QLineEdit *lineEdit = new QLineEdit(this);

QCompleter *completer = new QCompleter(wordList, this);
completer->setCaseSensitivity(Qt::CaseInsensitive);
lineEdit->setCompleter(completer);

As per the docs 5.0 of QLineEdit::setCompleter() it takes QCompleter as an argument but when i looked in the source code its specified as

#ifndef QT_NO_COMPLETER
void setCompleter(QCompleterExample *completer);
QCompleterExample *completer() const;
#endif

Thanks & Regards