#[unsafe(no_mangle)]pub const extern "C" fn nstd_shared_ptr_allocator<'a>(
shared_ptr: &NSTDSharedPtr<'a>,
) -> &'a NSTDAllocatorAvailable on crate feature
shared_ptr only.#[unsafe(no_mangle)]pub const extern "C" fn nstd_shared_ptr_allocator<'a>(
shared_ptr: &NSTDSharedPtr<'a>,
) -> &'a NSTDAllocatorshared_ptr only.