Validate a copy and compute the number of bytes it needs. If the copy is invalid, attempts to
"conservatively guess" (overestimate) the number of bytes that could be needed for a copy, even
if the copy parameters turn out to be invalid. This hopes to avoid "buffer too small" validation
errors when attempting to test other validation errors.
Validate a copy and compute the number of bytes it needs. If the copy is invalid, attempts to "conservatively guess" (overestimate) the number of bytes that could be needed for a copy, even if the copy parameters turn out to be invalid. This hopes to avoid "buffer too small" validation errors when attempting to test other validation errors.