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>it was just the union of everything that came along

Garbage collection isn't in the language though some people wanted it. So it isn't a union of everything.

Actually it is, as API introduced in C++11, and yes Bjarne was one of those that opposed to it, if I remember correctly.

However, since no one has made any use of it, and existing C++ GC's follow other schemes (Unreal, C++/ClI,...), there is a ISO C++23 proposal to remove it from the standard.

It is not just Bjarne that opposed GC - no compiler implemented it (or not a major one anyway).

Not in the mark-and-sweep variant but certainly as ref-counting. And not only once!

It doesn't collect garbage with cycles, and proposals for that have been rejected in the past.

True, but technically it is still a GC algorithm.

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