Re: [PATCH v2] lib/string.c: implement stpcpy

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Subject: Re: [PATCH v2] lib/string.c: implement stpcpy
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Mon, 17 Aug 2020 12:16:37 -0700
Cc: Arvind Sankar <nivedita@xxxxxxxxxxxx>, Sedat Dilek <sedat.dilek@xxxxxxxxx>, Fangrui Song <maskray@xxxxxxxxxx>, Nick Desaulniers <ndesaulniers@xxxxxxxxxx>, Joe Perches <joe@xxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Dávid Bolvanský <david.bolvansky@xxxxxxxxx>, Eli Friedman <efriedma@xxxxxxxxxxx>, "# 3.4.x" <stable@xxxxxxxxxxxxxxx>, Vishal Verma <vishal.l.verma@xxxxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>, "Joel Fernandes (Google)" <joel@xxxxxxxxxxxxxxxxx>, Daniel Axtens <dja@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Yury Norov <yury.norov@xxxxxxxxx>, Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, clang-built-linux <clang-built-linux@xxxxxxxxxxxxxxxx>, Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
In-reply-to: <CABCJKucsXufD6rmv7qQZ=9kLC7XrngCJkKA_WzGOAn-KfcObeA@mail.gmail.com>

On Mon, Aug 17, 2020 at 10:14:43AM -0700, Sami Tolvanen wrote:
> I just confirmed that adding -fno-builtin-stpcpy to KBUILD_CFLAGS does
> work with LTO as well.

Oh, I read this out of order; sorry! Yes, if -fno-builtin-stpcpy works,
let's use that instead. Doesn't that solve it too?

-- 
Kees Cook

References:
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Kees Cook
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Nick Desaulniers
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Joe Perches
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Nick Desaulniers
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Joe Perches
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Nick Desaulniers
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Fangrui Song
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Sedat Dilek
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Arvind Sankar
- Re: [PATCH v2] lib/string.c: implement stpcpy
  - From: Sami Tolvanen

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