std::pmr::polymorphic_allocator<T>::allocate_bytes

Allocates nbytes bytes of storage at specified alignment alignment using the underlying memory resource. Equivalent to return resource()->allocate(nbytes, alignment);.

# Declarations

void* allocate_bytes( std::size_t nbytes,
std::size_t alignment = alignof(std::max_align_t) );

(since C++20)

# Parameters

• nbytes: the number of bytes to allocate
• alignment: the alignment to use

# Return value

A pointer to the allocated storage.

# Notes

This function was introduced for use with the fully-specialized allocator std::pmr::polymorphic_allocator<>, but it may be useful in any specialization.

The return type is void* (rather than, e.g., std::byte) to support conversion to an arbitrary pointer type U by static_cast<U*>.

# See also

• allocate_object
• new_object
• allocate
• allocate
• allocate