[LTP] [PATCH] setregid01: Fix security warning for string formatting

[Enji Cooper]

> On Feb 25, 2019, at 09:12, Daniel Díaz <daniel.diaz@linaro.org> wrote:
> 
> GCC 8.2.0 complains with the following:
>  setregid01.c: In function 'run':
>  setregid01.c:47:3: error: format not a string literal and no format arguments [-Werror=format-security]
>     tst_res(TFAIL | TTERRNO, tc->msg);
>     ^~~~~~~
> because there is no string formatting in the message. This can
> be seen with CFLAGS set to:
>  -Wformat -Wformat-security -Werror=format-security
> as Yocto Project's Poky does, e.g.:
>  http://errors.yoctoproject.org/Errors/Details/230043/
> 
> Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
> ---
> testcases/kernel/syscalls/setregid/setregid01.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/testcases/kernel/syscalls/setregid/setregid01.c b/testcases/kernel/syscalls/setregid/setregid01.c
> index f2e41e134..8c9e11918 100644
> --- a/testcases/kernel/syscalls/setregid/setregid01.c
> +++ b/testcases/kernel/syscalls/setregid/setregid01.c
> @@ -44,9 +44,9 @@ static void run(unsigned int n)
>    TEST(SETREGID(*tc->arg1, *tc->arg2));
> 
>    if (TST_RET == -1)
> -        tst_res(TFAIL | TTERRNO, tc->msg);
> +        tst_res(TFAIL | TTERRNO, "%s", tc->msg);
>    else
> -        tst_res(TPASS, tc->msg);
> +        tst_res(TPASS, "%s", tc->msg);
> }
> 
> static void setup(void)
> -- 
> 2.17.1

LGTM!