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What's funny about "all the world's a VAX" is that the VAX could trap on integer overflow. I suspect that C compilers on VAX never set that mode though (it's a
by spc476 5y ago
What's funny about "all the world's a VAX" is that the VAX could trap on integer overflow. I suspect that C compilers on VAX never set that mode though (it's a flag in the status register).
- reincarnate0x14 5y agoIIRC the Alpha did that as well but due to instruction pipelining it was more complicated in practice. I want to say it was used on some SCADA software but that's an ancient memory -- and it wasn't even everywhere in that software as I remember an integer overflow error in an alarm processing program that we had to hot-patch one night with live data, that was exciting. Making myself nostalgic for the Alpha again ... I'll be over in the corner crying into my beer.
- renox 5y agoThe MIPS could do it too some instructions trap on integer overflow 'for green (no Icache cost) but AFAIK there were unused.. Convenience trump's security apparently..