memcpy(o->verify_pattern, top->patterns, o->verify_pattern_bytes);
memcpy(o->buffer_pattern, &top->patterns[o->verify_pattern_bytes],
o->buffer_pattern_bytes);
memcpy(o->verify_pattern, top->patterns, o->verify_pattern_bytes);
memcpy(o->buffer_pattern, &top->patterns[o->verify_pattern_bytes],
o->buffer_pattern_bytes);