std::generator<Ref,V,Allocator>::promise_type::operator new

void* operator new( std::size_t size )
    requires std::same_as<Allocator, void> ||
             std::default_initializable<Allocator>;

template< class Alloc, class... Args >
    requires std::same_as<Allocator, void> ||
             std::convertible_to<const Alloc&, Allocator>
void* operator new( std::size_t size, std::allocator_arg_t,
                    const Alloc& alloc, const Args&... );

template< class This, class Alloc, class... Args >
    requires std::same_as<Allocator, void> ||
             std::convertible_to<const Alloc&, Allocator>
void* operator new( std::size_t size, const This&, std::allocator_arg_t,
                    const Alloc& alloc, const Args&... );

Allocates size bytes of uninitialized storage using default or user-provided allocator.

Let A be

• Allocator, if it is not void,
• Alloc for (2,3), or
• std::allocator<void> otherwise.

Let B be std::allocator_traits<A>::template rebind_alloc<U> where U is an unspecified type whose size and alignment are both __STDCPP_DEFAULT_NEW_ALIGNMENT__.

Initializes an allocator b of type B with:

Uses b to allocate storage for the smallest array of U sufficient to provide storage for a coroutine state of size size, and unspecified additional state necessary to ensure that operator delete can later deallocate this memory block with an allocator equal to b.

Note: std::allocator_traits<B>::pointer must be of a pointer type, otherwise the behavior is undefined.

Parameters

Return value

A pointer to the allocated storage.

Exceptions