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Message-ID: <202310241652.0A3460C@keescook> Date: Tue, 24 Oct 2023 16:57:26 -0700 From: Kees Cook <keescook@...omium.org> To: Justin Stitt <justinstitt@...gle.com> Cc: Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, Alexander Gordeev <agordeev@...ux.ibm.com>, Christian Borntraeger <borntraeger@...ux.ibm.com>, Sven Schnelle <svens@...ux.ibm.com>, linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH] s390/sclp: replace deprecated strncpy with strtomem On Tue, Oct 24, 2023 at 04:46:04PM -0700, Kees Cook wrote: > > Instead use strtomem() as `e.id` is already marked as nonstring: > > | char id[4] __nonstring; > > I'm surprised the compiler didn't complain about this -- I thought that > was the point of the __nonstring attribute: to diagnose when used with a > string function. Hmpf. Wow. GCC only warns if you call strlen() on it, but literally nothing else... :( -- Kees Cook
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