On 08/13/2014 08:51 PM, Dennis Handly wrote:
You just say that this use of va_arg produces a const Foo& and don't allow
Foo to be mentioned. I suppose you could allow a "const Foo" too.
It's actually just Foo&.
With your current idea, did you plan to invoke copy constructor or copy
assignment operator for:
Foo f = va_arg(ap, Foo);
I would assume you would have to do that, since the user can "rewind" and
use va_start ... va_end multiple times.
In that case they would get another (modifiable) lvalue for the same
object, which is also true of the bitwise-copy approach.
Jason
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