Date: Thu, 6 Jul 2017 20:17:32 +0300 (MSK) From: Alexander Monakov <amonakov@...ras.ru> To: musl@...ts.openwall.com Subject: Re: Documentation of memcpy and undefined behavior in memset On Thu, 6 Jul 2017, Rich Felker wrote: > If p points to one past the end of an object that ends on a page > boundary, this transformation could introduce a crash. The object beginning at p (i.e. the array beginning just after the array which p was derived from) could be volatile, making that an invalid transformation. Nothing gives the compiler a guarantee that that area is non-volatile. Alexander
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