Re: [PATCH] C undefined behavior fix

From: David Woodhouse (dwmw2@infradead.org)
Date: Wed Jan 02 2002 - 19:35:30 EST


(cc list trimmed)

alan@lxorguk.ukuu.org.uk said:
> If you want a strcpy that isnt strcpy then change its name or use a
> different language 8)

The former is not necessarily sufficient in this case. You've still done the
broken pointer arithmetic, so even if the function isn't called strcpy() the
compiler is _still_ entitled to replace it with a call to memcpy() or even
machine_restart() before sleeping with your mother and starting WW III.

Granted, it probably _won't_ do any of those today, but you should know
better than to rely on that.

What part of 'undefined behaviour' is so difficult for people to understand?

--
dwmw2

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Jan 07 2002 - 21:00:19 EST