that is the example that is usually brought up
but I think that Augustine would have thought Calvin a great heretic. and Calvin would have through Augustine a great heretic
Augustine taught the Lord's Supper is a Sacrifice, Free will, No Double Predestination, salvation through the Sacraments, Apostolic Successsion of the Catholic Bishops, etc
Doubtless Augustine was affected by his historical position in time as was Calvin.
Calvin didn't consider Augustine a great heretic, though. Calvin thought of the ECFs in terms of their growth in understanding all the things that had been given to them. Calvin actually quoted Augustine's position on free will favorably in Eternal Predestination and the Institutes.
The identification of Augustine's view of reprobation as not being predestination -- that may be a bit of a stretch. Augustine like many Calvinists (including me) saw that the predetermination of the reprobate was so fundamentally different a process than the predestination of the elect, that he didn't think "predestination" was actually a very reasonable name for it.
But none of that changes the content of what Augustine saw to be the predetermination of the reprobate. "
A rose by any other name would smell as sweet."
Finally, a number of people have noticed that Calvin's view of the Lord's Supper is positioned between Luther & Zwingli, and actually very near the position of a 9th century theologian, Ratramnus.
Rosenthal makes something of a high-level pass at this, though perplexedly he actually asserts Calvin wouldn't say things he actually did say. Calvin's
Short Treatise on the Lord's Supper can be something of a surprise to modernists.
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Calvin would never describe the sacrament as "spiritual flesh" or "spiritual blood."' -- Rosenthal
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Our Lord, therefore, instituted the Supper, first, in order to sign and seal in our consciences the promises contained in his gospel concerning our being made partakers of his body and blood, and to give us certainty and assurance that therein lies our true spiritual nourishment" Little Treatise, sec. 6
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he himself, with his own lips, declares that his flesh is meat indeed, and his blood drink indeed. (John vi. 55.) If these words are not to go for nothing, it follows that in order to have our life in Christ our souls must feed on his body and blood as their proper food. This, then, is expressly attested in the Supper, when of the bread it is said to us that we are to take it and eat it, and that it is his body, and of the cup that we are to drink it, and that it is his blood. This is expressly spoken of the body and blood, in order that we may learn to seek there the substance of our spiritual life." Little Treatise on the Lord's Supper, sec. 13
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We must then truly receive in the Supper the body and blood of Jesus Christ, since the Lord there represents to us the communion of both." Little Treatise, sec. 16
So while there's certainly a difference between Ratramnus and Calvin, it's far more subtle and less distinctive than it seems people give it credit.