void* __CRTDECL operator new(size_t const size)
{
    for (;;)
    {
        if (void* const block = malloc(size))
        {
            return block;
        }

        if (_callnewh(size) == 0)
        {
            if (size == SIZE_MAX)
            {
                __scrt_throw_std_bad_array_new_length();
            }
            else
            {
                __scrt_throw_std_bad_alloc();
            }
        }

        // The new handler was successful; try to allocate again...
    }
}

I know that this endless loop is to wait for the memory to be allocated successfully and then return the pointer. However, my operating system knowledge is very weak (non-major), so I would like to ask everyone about the endless loop here. How is the second if of analyzed (such as the processing of the handle here, etc.).

Thanks