In the shared_future class definition in 30.6.5 the move constructor
that constructs a shared_future from an unique_future receives the
parameter by value. In paragraph 3, the same constructor receives it as
const value.

I think that is a mistake and the constructor should take a r-value
reference:

shared_future(unique_future<R>&& rhs);

--
Thomas J. Gritzan

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