I’m afraid that we are again encountering an absolute interpretation to text that does not make such an assertion. The quote you cited above does not support your idea that the CCC contains
all Church teachings. It simply says that it is* a
statement of the Church’s faith and teachings. “I believe in one God” is a *statement of the Church’s faith and Catholic doctrine; however, it is not
all the Church’s faith and doctrine though it very well may be the most general summary as the source of our faith.
The purpose of the CCC is a summation of normative teachings of the Church, but it was never intended to be somehow a compilation of all 2000 years of Church teaching.
I was going to cite examples in that post, but I had hoped I didn’t have to and that my last explanation would have been enough. There have been many general councils and there are very many canons from those councils. How many times does the CCC anathematize anyone for not holding to a particular dogma? Yet this is the teaching of the Church that unless a man believes x,y, and z, he is anathema (excommunicated, out of the Church and literally by definition of the word “accursed”). And then there are all the solemn papal declarations that have been made throughout history as well.
Here are a few quick examples of infallible (and therefore irreformable) teachings of the Church that I do not believe are present in the modern CCC:
Vatican I – Infallible declaration:
“3. If anyone says that it is possible that at some time, given the advancement of knowledge, a sense may be assigned to the dogmas propounded by the church which is different from that which the church has understood and understands: let him be anathema.”
piar.hu/councils/ecum20.htm
From the Council of Trent:
history.hanover.edu/texts/trent/trentall.html
CANON VI.–If any one saith, that the canon of the mass contains errors, and is therefore to be abrogated; let him be anathema.
CANON VII.–If any one saith, that the ceremonies, vestments, and outward signs, which the Catholic Church makes use of in the celebration of masses, are incentives to impiety, rather than offices of piety; let him be anathema.
CANON IX.–If any one saith, that the rite of the Roman Church, according to which a part of the canon and the words of consecration are pronounced in a low tone, is to be condemned; or, that the mass ought to be celebrated in the vulgar tongue only; or, that water ought not to be mixed with the wine that is to be offered in the chalice, for that it is contrary to the institution of Christ; let him be anathema.
[Concerning this one, the argument that will then be raised is whether Vatican II permitted the Mass solely in the vernacular. It did not make such a statement. It merely permitted that some prayers may be done in the vernacular (vulgar tongue), and it also demanded that the Latin language be preserved in the liturgy. But again, we are getting onto another topic of discussion here.]
I also recommend going through Pope Pius IX’s Syllabus of Errors, and I’m sure you will find errors that were condemned there that are not referenced in the CCC. You will also find errors condemned in there that the CCC
appears to contradict, but I don’t believe does as they must be interpreted in light of the Church’s tradition.
papalencyclicals.net/Pius09/p9syll.htm
If given more time, I could find lots of examples, and I’m sure others on here would be able to give examples as well, but I do not believe that this topic merits such further research on my part. If you would like to discuss this topic further or would like me to cite more examples, please start a new thread, as this topic is going astray from the OP.