linux-kernel - Re: [PATCH v2 2/2] bits: Add tests of GENMASK

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMuHMdVm_ptUipb==jt1aL4RLcRU=OHawV1j4xfB1_z7S-FPxQ@mail.gmail.com>
Date:   Mon, 8 Jun 2020 09:33:05 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Rikard Falkeborn <rikard.falkeborn@...il.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Arnd Bergmann <arnd@...db.de>, emil.l.velikov@...il.com,
        Kees Cook <keescook@...omium.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kbuild test robot <lkp@...el.com>, syednwaris@...il.com,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Subject: Re: [PATCH v2 2/2] bits: Add tests of GENMASK

Hi Richard,

Thanks for your patch!

On Sun, Jun 7, 2020 at 10:35 PM Rikard Falkeborn
<rikard.falkeborn@...il.com> wrote:
> Add tests of GENMASK and GENMASK_ULL.
>
> A few test cases that should fail compilation are provided under ifdef.

It doesn't hurt to mention the name of the #ifdef here.

> Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>

> --- /dev/null
> +++ b/lib/test_bits.c
> @@ -0,0 +1,73 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Test cases for functions and macrso in bits.h
> + */
> +
> +#include <kunit/test.h>
> +#include <linux/bits.h>
> +
> +
> +void genmask_test(struct kunit *test)
> +{
> +       KUNIT_EXPECT_EQ(test, 1ul, GENMASK(0, 0));
> +       KUNIT_EXPECT_EQ(test, 3ul, GENMASK(1, 0));
> +       KUNIT_EXPECT_EQ(test, 6ul, GENMASK(2, 1));
> +       KUNIT_EXPECT_EQ(test, 0xFFFFFFFFul, GENMASK(31, 0));
> +
> +#ifdef TEST_BITS_COMPILE

"#ifdef TEST_GENMASK_FAILURES"?

> +       /* these should fail compilation */
> +       GENMASK(0, 1);
> +       GENMASK(0, 10);
> +       GENMASK(9, 10);
> +#endif

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds