Using boost::fast_pool_allocator in place of std::allocator

Question

I'm trying to use boost::fast_pool_allocator in place of the standard allocator and it won't work (ironically with another boost library) because fast_pool_allocator has more than one template parameter even though it claims to be compatible with std::allocator and everything except the first has a default value.

I am trying to pass it as a class template that expects a single template parameter. The specific error:

error: type/value mismatch at argument 3 in template parameter list for "template<class Point, template<class, class> class Container, template<class> class Allocator> class boost::geometry::model::multi_point" error: expected a template of type "template<class> class Allocator", got "template<class T, class UserAllocator, class Mutex, unsigned int NextSize, unsigned int MaxSize> class boost::fast_pool_allocator"

Is there a way to make this actually work?

Sounds like Boost.Geometry is broken. I'd file a bug.

R. Martinho Fernandes
– R. Martinho Fernandes

2014-02-25 12:49:30 +00:00
Commented Feb 25, 2014 at 12:49 — R. Martinho Fernandes
– R. Martinho Fernandes, Commented Feb 25, 2014 at 12:49

Inbae Jeong · Accepted Answer · 2014-02-25 06:39:29Z

Use the following template instead of boost::fast_pool_allocator

template <class T> using fast_pool_allocator_t = boost::fast_pool_allocator<T>;

This will also work if you are not using C++11.

template <class T> struct fast_pool_allocator_t : boost::fast_pool_allocator<T> { };

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