错了,nr7是指针。如果你是单个tag_t, 调用时------nr7[0]!!,并且需要初始化。下面UG讲的:
tag_t *nr7, /* <O>
List of copied object identifiers. This is
not used when ip4 = 1. When ip4 is 2, this must
be dimensioned by the caller as large enough to
contain the same number of objects that are in np2.
*/