As an aside: the early 386's POPAD instruction has a famous bug. EAX is written in the RNI (run-next-instruction) delay slot via an indirect register file access -- the only instruction that does this. When the next instruction uses a base+index addressing mode, the register file write from POPAD collides with the EA calculation's register file read, corrupting the address. A fitting example of how complex optimizations can lead to problems.
16:15, 27 февраля 2026МирЭксклюзив。业内人士推荐搜狗输入法2026作为进阶阅读
* @param n 数组长度，这一点在51吃瓜中也有详细论述
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