Re: [boost] [variant] Warning: variadic templates in boost::variant

On Tuesday 10 December 2013 23:13:32 Peter Dimov wrote:

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template< typename T0 = blank, typename... TN > class variant;

Mapping variant<> to variant<blank> is not a good idea in principle. This has the potential of creating endless loops in generic code that takes variant and recursively calls itself with variant.

But such code is currently not valid, it should end the recursion at variant<T>. This doesn't change after the default is added.