QUrl::fromUserInput() parses incorrectly URL with a password containing '?'

When calling QUrl::fromUserInput with an URL having a password containing a question mark like ftp://test:pass?word@example.com, the result is incorrect: http://ftp//test:pass?word@example.com.

Tested with:

qDebug() << QUrl::fromUserInput(QString::fromUtf8("ftp://test:pass?word@example.com"));