Re: [boost] [Bug Sprint] [variant] #2839 ambiguous swap call

Subject: Re: [boost] [Bug Sprint] [variant] #2839 ambiguous swap call
From: Daniel Hulme (st_at_[hidden])
Date: 2009-06-03 09:53:12

On Tue, Jun 02, 2009 at 01:45:36PM +0100, Daniel Hulme wrote:
> On Tue, Jun 02, 2009 at 11:10:46AM +0100, Joseph Gauterin wrote:
> > We solved a similar problem in Boost.Swap by providing a templated
> > swap with two template arguments [making it less specialized than
> > std::swap]. I've had a quick look at variant/detail/move.hpp and I
> > think it can be fixed in the same way.
> 
> That's great. I will cook a patch to that effect and attach it to the
> ticket.

Actually, on second thoughts, I don't think I want to do that. I'm
pretty sure the intent of the code is to replace the generic
swap-by-copy-assignment std::swap template, but *not* to replace a
specifically-written swap. Making it *less* specialized than std::swap
is effectively the same as removing detail::move_swap::swap(), I think.
Is there a hack to exclude the std::swap template from consideration for
this call?

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