Re: std::packaged_task trunk problem

[Jonathan Wakely <jwakely dot gcc at gmail dot com>]

On 7 November 2011 09:26, Lars Gullik Bjønnes wrote:
>
> This is the wrapper I ended up with. I had to remove the throw, it
> triggered all the time.

What if you give PretendToBeCopyable a noexcept destructor?
That should ensure the container will move it rather than copy it,
whenever possible.

> template<typename Moveable>
> struct PretendToBeCopyable
> {
> ? ? ? ?explicit PretendToBeCopyable(Moveable&& m) : m(std::move(m)) {}
> ? ? ? ?PretendToBeCopyable(PretendToBeCopyable&&) = default;
> ? ? ? ?PretendToBeCopyable(PretendToBeCopyable& p)
> ? ? ? ? ? ? ? ?: m(std::move(p.m)) {}
> ? ? ? ?void operator()() { m(); }

          ~PretendToBeCopyable() noexcept = default;

> private:
> ? ? ? ?Moveable m;
> };
>
> }