no.  for us, there is no exception, but for God, there is no restriction.

Pope Pius IX said,
Specifically, that they "are able to attain eternal life by the efficacious virtue of divine light and grace."

Asking for the third time.....

The words of God, Who is Truth Himself, said: "Amen, amen I say to thee, unless a man be born again of water and the Holy Ghost, he cannot enter into the kingdom of God."

So the only question anyone needs to answer, is: Can a man enter the Kingdom of God without being born again of water and the Holy Ghost?

Yes or no.

Nowhere does the Pope teach Pelagianism ... as you try to slander him as doing.

What the Pope is saying that by the virtue (aka power) of divine LIGHT and GRACE, such as these who place no obstacle to their salvation, can be saved.

"7. Here, too, our beloved sons and venerable brothers, it is again necessary to mention and censure a very grave error entrapping some Catholics who believe that it is possible to arrive at eternal salvation although living in error and alienated from the true faith and Catholic unity. Such belief is certainly opposed to Catholic teaching. There are, of course, those who are struggling with invincible ignorance about our most holy religion. Sincerely observing the natural law and its precepts inscribed by God on all hearts and ready to obey God, they live honest lives and are able to attain eternal life by the efficacious virtue of divine light and grace. Because God knows, searches and clearly understands the minds, hearts, thoughts, and nature of all, his supreme kindness and clemency do not permit anyone at all who is not guilty of deliberate sin to suffer eternal punishments."

"through" their invincible ignorance, not by it or with it, "in spite of it"

Saint Thomas Aquinas, Summa Theologica, on The Sacraments, Question 68 - Of Those Who Receive Baptism, Second Article - Whether a Man Can Be Saved without Baptism?

"I answer that, The sacrament of Baptism may be wanting to someone in two ways. First, both in reality and in desire; as is the case with those who neither are baptized, nor wish to be baptized: which clearly indicates contempt of the sacraments, in regard to those who have the use of free-will.  Consequently those to whom Baptism is wanting thus, cannot obtain salvation: since neither sacramentally nor mentally are they incorporated in Christ, through Whom alone can salvation be obtained.
Secondly, the sacrament of Baptism may be wanting to anyone in reality but not in desire:  for instance, when a man wishes to be baptized, but by some ill-chance he is forestalled by death before receiving Baptism.  And such a man can obtain salvation without being actually baptized, on account of his desire for Baptism, which desire is the outcome of faith that worketh by charity, whereby God, Whose power is not tied to visible sacraments, sanctifies man inwardly.  Hence Ambrose says of Valentinian, who died while yet a catechumen: I lost him whom I was to regenerate: but he did not lose the grace he prayed for."