DIP 1018--The Copy Constructor--Formal Review

[Olivier FAURE]

On Monday, 25 February 2019 at 22:45:38 UTC, Olivier FAURE wrote:
> For the same reason C++'s std::shared_pointer uses a non-const 
> copy constructor.

Wait, no, I just checked, std::shared_pointer's copy constructor 
is const, even though it changes shared data. Ugh, that's just 
wrong.

(I kind of agree with Walter's point; I totally assumed the 
constructor would be non-const, since it mutates data it receives)